THE UNIVERSITY OF MICHIGAN Final Report Analysis of Micrometeorological and Related Data obtained at the U.S. Army SIPRE Keweenaw Field Station Houghton, Michigan Part I Thermal Radiation Data Snow Seasons 1954-55 and 1955-56 Donald J. Portman Associate Research Meteorologist Edward Ryznar Graduate Research Assistant UMRI Project 02688 Under Contract With: U.S. Army Snow, Ice and Permafrost Research Establishment Corps of Engineers 1215 Washington Avenue Wi3mette, Illinois Administered by: THE UNIVERSITY OF MICHIGAN RESEARCH INSTITUTE ANN ANN ABOR January 1960

PREFACE The data given in this report were processed and tabulated as part of the requirement in Contract Number DA-11-190-ENG-30 with the U.S. Army Snow, Ice and Permafrost Research Establishment, Corps of Engineers. Work on the contract included, in addition, (1) an analysis of micrometeorological and related data on heat transfer processes of a snow cover, and (2) participation in the data collection program for the snow seasons 1957-58 and 1958-59. The results of the analysis and an account of the field participation are reported in Part II of the Final Report. The overall effort on the contract was directed toward evaluating heat transfer between a snow cover and its environment in order to predict physical snow cover characteristics from meteorological information. ii

TABLE OF CONTENTS Page DESCRIPTION OF DATA 1-2 SREERENCES 3 THEMEAL RADIATION DATA, 1955 4-23 January 4-9 February 9-16 March 16-23 HERMAL RADIATION DATA, 1956 24-37 January 24-29 February 29-36 March 36-37 iii

DESCRIPTION OF DATA 1. Location and. Periods of Measurement Measurements of radiative fluxes over snow were made at the U.S. Army Keweenaw Field Station, Houghton, Michigan, 47011'N, 88033'W. The station is 1090 feet above sea level and about 500 feet above the level of Lake Superior, which is six miles to the northwest. The terrain within a 100 yard radius of the measurement site was level and obstructionless. For the two snow seasons under investigation, continuous measurements of radiative fluxes were obtained from 12 January 1955 through 14 April 1955 and from 10 January 1956 through 4 March 1956. 2. Instrumentation Incident and reflected solar radiation fluxes were measured with Eppley pyrheliometers mounted about 3 meters above the ground. The thermopile outputs of both pyrheliometers were continuously recorded by potentiometers calibrated to record units of solar radiation directly in terms of langleys per minute (gram cal cm-2 min-1). Reference is made to articles by Hand (1) and Fuquay and Buettner (2) for detailed descriptions and performance characteristics of Eppley pyrheliometers. Total hemispherical radiation, consisting of short wave direct and. diffuse solar and long-wave atmospheric radiation incident upon a plane surface, was measured with an aspirated Gier and Dunkle total hemispherical radiometer. Net radiation exchange, consisting of the difference between total hemispherical radiation and reflected solar, reflected atmospheric, and long wave terrestrial radiation emitted by the snow, was measured with a Gier and Dunkle aspirated net-exchange radiometer. Both radiometers were mounted about 3 meters above the ground surface and their thermopile outputs were continuously recorded by recording potentiometers. Reference is made to papers by Gier and Dunkle (3) and by Dunkle and others (4) for a description of the construction and operation of the radiometers. 3. Data Processing The collected data were abstracted from the recorder strip charts partly by personnel from the Snow, Ice and Permafrost Research Establishment and partly by personnel from the University of Michigan meteorological laboratories. The completed abstracted data received from SIPRE were inspected and all detectable errors were corrected. A common visual-manual method of abstracting the data was used. It consisted of evaluating fifteen minute, half hourly, or hourly averages of each radiative flux. Instrument calibration factors and corrections were applied to all abstracted values of total and net radiation. Data processing was completed by computing hourly totals of each radiative flux in terms of the number of langleys received for the indicated hour ending, and finally by computing daily totals of each radiative flux. 4. Explanation of Tables Each page includes four 24-hour days of tabulated data of incoming solar, 1

reflected solar, total hemispherical and net exchange radiation. Totals are given for each hour ending at the time indicated (langleys/hr) and for each 24-hour day ending at midnight (langleys/day) to the nearest tenth of a langley. The tables cover the period from 12 January 1955 through 31 March 1955 and from 10 January 1956 through 4 March 1956. 2

REFERENCES 1. Hand, Irving F,, Pyrheliometers and Pyrheliometric Measurements, U. S. Weather Bureau, Washington, D. C., 55pp, November, 1946. 2. Fuquay, Don and Konrad Buettner, "Laboratory Investigation of Some Characteristics of the Eppley Pyrheliometer," Trans. Amer. Geophys. Union, Vol. 38, 38-43, 1947. 3. Gier, J. T. and R. V. Dunkle, "Total Hemispherical Radiometers", AIEE Transactions, Vol. 70, 1951. 4. University of California, Department of Engineering, Division of Engineering Research, Non-Selective Radiometers for Hemispherical Irradiation and Net Radiation Interchange Measurements, Report No. 9, Report Code NR-015-202, 27pp, October, 1949. 3

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar January 11, 1955 January 12, 1955 01 MSG. MSG. 0.0 0.0 23.9 -1.1 0.0 0.0 02 " t 1 23.8 0.0 03 t " t "19.8 0.0 04 " " 19.9 -1.1 " " 05 " "t 21. 0 0.0 " 06 "t " " 21.1 0.0 " t 07 t t "t " 20.8 -1.1 08. " t 22.3 -1.1 " " 09 22.3 -1.1 10 4.4 3.3 25.4 0.0 3.6 2.3 11 I " 9.3 9.0 31.9 0.0 9.0 7.9 12 26.4 23.9 37.4 1.1 12.8 12.6 13 t 29.1 26.7 41.6 1.1 17.6 16.7 14 29.9 27.8 40.2 0.0 17.3 17.3 15 19.5 20.1 40.2 " 17.1 15.9 16" tt it 8.1 8.6 33.7 " 16 2 9-9 17 I 3.8 4.8 28.3 " 9.0 3.6 18 22.2 -2.1 0.0 0.0 24.3 -2.1 0.0 0.0 19 22.9 -1.1 " 22.9 -2.1 " t 20 22.7 0.0 " " 21.3 -3.2 21 20.1 -1.1 II " 23.9 -2.1 tt t 22 20.1 -1.1 " tt 22.7 -2.1 t 23 21.3 -2.1 23.7 0.0 " 24 21.4 -1.1 t t 23.6 0.0 t" TOTAL 150.7 -86 130.5 1242 6360 14.9 102.6 86.2 January 13, 1955 January 14, 1955 01 24.7 0.0 0.0 0.0 23.2 -1.1 0.0 0.0 02 24.6 0.0 t " t 23.1 -1.1 i 03 23.1 -1.1 23.2 -1.1 04 22.8 -1.1 24.5 0.0 05 24.0 0.0 t 24.4 06 23-9 0.0 "23.4 07 22.6 -1.1 23.4 t " 08 22.6 -1.1 " 22.6 09 22.6 -1.1 tt 19.8 -2.1 I t 10 27.9 0.0 4.8 3.0 20.0 -3.2 3.2 2.1 11 33.2 1.1 109 9.2 32.2 -4.3 17.4 16.9 12 40.7 1.1 19.5 17.7 45.4 -2.1 28.9 28.2 13 42.5 1.1 22.4 20.4 36.8 -3.2 22.8 22.5 14 45.2 2.1 23.6 21.6 36.7 -1.1 16.2 14.7 15 37.3 -3.2 21.3 204 28.0 -2.1 10.2 9.6 16 33.2 -2.1 17.9 19.5 30.5 -1.1 9.0 8.3 17 22.5 -2.1 11.3 5.1 25.4 0.0 3.0 3.2 18 20.0 -1.1 0.0 0.0 22.9 -1.1 0.0 0.0 19 24.1.0 t 24 -.1 20 22.8 -1.1 " 24.3 0.0 21 22.9 -1.1 " 24.3 -1.1 " 22 23.1 -1.1 " It 24.3 -1.1 23 23.1 -1.1 " " 24.3 -1.1 t 24 23.1 -1.1 t t 25.6.0 " TOTAL 652.5 -14i 1131.7 116.9 632.4 -28.0 110.7 105 5 4

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar January 15. 1955$ January 16 1955 01 23.8 0.0 MSG. 0.0 22.1 -1.1 0.0 0.0 02 25.4 -2.1 " 22.1 -1.1 " 03 24.9 -2.1 " 21.9 -1.1 04 24.5 -2.1 22.1 -1.1 05 23.7 -2.1 t 22.1 -1.1 t 06 23.6 -2.1 " 22.1 -1.1 It 07 24.-6 -2.1 " 21.9 -1.1 08 23.2 -2.2 " 22.1 -1.1 " 09 23.1 2-2.1 22.1 -1.1 " I 10 24.6 -2.1 " 1.5 26.3 0.0 6.3 3.2 11 28.6 2.1 59 33.1 0.0 12.6 9.9 12 28.4 2.2 " 8.7 39.8 1.1 19.4 16.2 13 29.8 2.2 " 8.3 39.9 1.1 20.4 18.0 14 32.1 2.2 " 10.5 39-9 1.1 19.9 15.5 15 30.7 2.2 " 7.1 39.9 1.1 17.7 14.1 16 27.9 1.1 " 33 34.4 1.1 12.3 10.7 17 25.0 -1.1 ".9 27.5 0.0 5.9 4.2 18 23.7 -1.1 it 0.0 26.2 -1.1 0.0.6 19 22.3 -1.1 " I 22.4 -1.1 " 0.0 20 22.4 -1.1 " tl 22.3 -1.1 " 21 22.1 -1.1 It 22.4 -1.1 22 22.1 -1.1 " t 22.3 -1.1 23 22.1 -1.1 f it 22,4 -1.1 I 24 22.1 0.0 " ~` E22.2 -1.1 t TOTAL 600.7-14.767 T639.5 -12.1 924 Januar 17, 1955 January 18, 1955 01 22.3 -1.1 0.0 0.0 22.5 -1.1 0.0 0.0 02 22.2 -1.1 r t 22.7 -1.1 H 03 22.1 -1.1 f It 22.8 -1.1 " t 04 22.1 -1L.1 " 22.6 -1.1 " 05 21.9 -1.1 " 22.6 -1.1 06 21.9 -1.1 " " 21.3 -1.1 07 21.9 -1o.1 " 22.7 -1.1 " 08 21.9 -1.1 " 21.3 -1.1 09 21.8 -1.1 " 22.9 -1.1 10 27.2 -1.1 4.5 3.0 27.0 -1.1 5.3 2.9 11 34.1 1.1 11.1 9.3 33.9 0.0 12.6 11.4 12 37.9 0.0 16.8 12.8 44.3 -1.1 26.4 25.2 13 40.8 1.1 20.6 19.7 46.4 1.1 30.3 27.9 14 44.5 1.1 24.6 21.5 48.1 0.0 31.5 29.7 15 37.9 1.1 23.3 17.9 40.4 0.0 22.5 21.6 16 32.7 -1.1 20.1 11.7 29.8 0.0 11.1 9.5 17 25.9 -3.2 13.9 6.9 26.9 -2.2 6.2 5.4 18 19.4 -3.2 8.7.8 23.0 -1.1 0.0 0.0 19 18.2 -3.2 0.0 0.0 20.9 -4.3 1 t. 20 21.5 -2.2 " H 17.8 -3.2 21 21.6 -1.1 " 1 17.7 -3.2 1 H 22 21.4 -2.2 " 21.2 -1.1 23 227 -1.1 ".0t 230 -1.1 24 22.6 -1.1 21.6-. 1 " TOTAL 626 5-25.0 l143.. 6 3.6 643.4 3 1- 45. 133.6

THERMAL RADIATION DATA, KEWENEAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Heis. Exch. Solar Solar Hemis. Exch. Solar Solar.._.......Januar 19, 1955 January 20, 15955 01 22.5 -1.1 0.0 0.0 13.2 -3.3 0.0 0.0 02 20.0 -2.2 "I t 15.3 -33 03 22.1 -3.2 " I 13.5 -3.3 04 21.9 -1.1 t t 17.4 -2.2 " 05 18.2 -3.2 "t t 15.1 -3.3 06 20.9 -1.1 I tt 13.7 -1.1 It 07 21.3 -11 I 121 -5.5 08 22.9 0.0 "t t 13.5 -6.5 t 09 21.5 0.0 " -15.1 -5.4 t4 10 27.8 0.0 11.7 7.14 23.4 -2.2 7.4 7.4 11 38.1 1.1 25.4 19.5 30.1 0.0 8.9 7.2 12 37.9 0.0 19.8 18.9 35.6 1.1 14.7 14.6 13 46.1 -3.2 279 27.6 43.1 1.1 19.5 17.7 14 40.1 -4.3 26.1 25.5 43.1 2.1 19.5 19.1 15 45.8 -1.1 31.8 309 55.6 2.1 345 28.7 16 39.2 -4.3 26.6 25.5 38.6 -3.2 31.5 25.2 17 25.6 -7.5 11.9 13.1 24.2 -6.4 15.0 13.2 18 17.3 -2.2 0.0 0.0 15.2 -6.4 1.9 1.4 19 16.2 -3.3 " t 19.4 -3.2 0.0 0.0 20 13.8 -3.3 " t 21.9 -2.1 21 13.1 -3.3 1 t 20.5 -2.1 t 22 14.2 -3.3 I16.4 -4.3 23 13.3 -3.3 i" 19.2 -3.2 " It 24 13.4 -4.4" 19.2_ -2.1 1It TOTAL 593.2 -55 4 181.2 168.4 5544 -62.7 152.9 134.5 January 21, 1955 January 22, -1955 01 23.3 -2.1 0.0 0.0 18.3 -3.2 0.0 0.0 02 22.3 -1.1 tt 19.4 -2.1 II It 03 21.0 -1.1 t It 19.2 -3.2 It 04 22.3 -1.1 It 19.6 -2.1 t-1 t 05 23.5 0.0 1t It 21.1 -1.1 t 06 23.6 t t" t it 20.8 -2.1 t t 07 23.6 tt It 21.6 -1.1 08 23.5 1" 25.6 0.0 09 23.6 T tt T 22.3 -1.1 t I 10 26.3 2.1.6 23.8 -2.1 3.8 2.6 11 30.1 " 4.4 3.2 30.2 -1.1 10.9 11.1 12 32.9 1.1 9.5 8.1 34.9 -2.1 16.1 15.2 13 41.8 1.1 18.8 16.7 41.8 0.0 22.2 21.0 14 43.0 1.1 21.6 19.2 40.6 " 13.4 12.8 15 38.9 -1.1 17.9 16.4 37.8 13.7 13.1 16 35.5 0.0 11.4 9.8 32.5 2 9.0 8.3 17 23.6 0.0 5.1 4.9 28.4 " 3.8 3.2 18 22.1 -1.1.8 1.1 24.6 t.9.3 19 23.4 -1.1 0.0 0.0 25.8 0.0 0.0 20 22.3 -1.1 " t 24- -.4 t 21 21.0 -1.1 24.1 " " 22 17.7 -2.1 " 24.1 t It 23 20.0 -1.1 t " t 24.1 24 20.99 -1.1 t tl 23.9 t13 " "t TOTAL 622-11.9 91.6 6289 -21.3 9 87.

THERMAL RADIATION DATA, KEWEENAW FIEID STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar January 23, 1955 Janury 24, 1955 01 23-9 0.0 0.0 0.0 19.9 -2.2 0.0 0.0 02 23.9 0.0 20.7 -1.1 03 23.6 0.0 "19.2 -2.2 04 23.4 -1.1 " 20.5 -1.1 tt 05 23.1 -1.1 " t 18.8 -3.3 1 06 23.1 -1.1 " 17.1 -33 t 07 23.1 -1.1 l" 14.4 -4.4 1 " 08 21.7 -1.1 t 14t.5 -3.3 f " 09 21.4 -3.2 "1 17.8 -2.2 " 10 26.9 a -4.3 7.1 5.1 25 7 -1.1 7.5 6.0 11 33.6 -1.1 18.2 16.1 38.4 1.1 16.5 15.6 12 44.2 -1.1 27.3 15.9 37.5 0.0 18.2 6.8 13 51.7 -1.1 34.9 31.9 45.7 1.1 27.8 25.8 14 48.9 -1.1 33.9 31.7 52.9 0.0 35.9 32.6 15 43.9 -1.1 28.5 26.1 8.1 1.1 25.7 23.6 16 35.2 0.0 16.1 12.8 33.5 -4.3 17.7 16.5 7 28.2 -1.1 9.8 98 30.7 -1.1 8.4 7.9 18 21.2 -3.2 1.4 1.8 19.8 -3.2 1.9 1.9 19 21.4 -2.2 0.0 0.0 22.8 -1.1 0.0 0.0 20 21.5 -2.2 T T 18. -2.2 I 21 20.0 -1.1 11 f 17.3 -4.3 " 22 19.9 -1.1 t "21.5 -1.1 TI t 23 19.9 -1.1 t t 21.7 -1.1 ft 24 19.7 -2.2 " ti 21.5 -1.1 TOTAL 63TI -32.7 177.2 151.2 618.9 -40.4 159.6 146.7 January 25, 1955 January 26, 1955 02 22.8 0.0 tl tl 20.4 0.0 " t 03 22.8 -1.1 It tI 20.3 -2.2 04 22.5 0.0 " T 20.2 -1.1 t 05 21.2 -1.1. t1 21.4 -1.1 1i 06 22.6 -1.1 "! 21.9 0.0 t 07 22.7 0.0 T 20.5 -1.1 tl iT 08 22.5 -1.1 " II 20.2 -3.3 i T 09 22.5 -1.1 t t19.9 -1.1 o.. t 10 27.9 -1.1 4.9 2.9 23.9 0.0 6.9 5.1 11 32.8 0.0 15.0 12.5 30.5 2.2 17.3 15.9 12 45.8 1.1 24.8 23.1 37.1 2.2 22.5 21.2 13 44.4 1.1 26.1 24.3 37.8 1.1 20.9 19.9 14 46.6 2.2 28.4 27.2 36.5 1.1 18.0 17.6 15 41.6 -1.1 23.1 22.4 36.4 0.0 19.7 19.2 16 35.1 0.0 18.9 17.7 30.9 1.1 12.2 11.6 17 28.2 -2.2 10.8 10.9 24.3 0.0 4.8 4.9 18 20.5 -1.1 1.7 1.9 19-9 0.0 1.1 1.1 19 22.1 -1.1 0.0 0.0 20.2 0.0 0.0 0.0 20 22.1 -1.1 20.1 -1.1 21 19.1 -2.2 11 Ht 20.1 0.0 I 8 22 21.6 -1.1 " TI I 20.1 0.0 " ~I 23 20.4 -1.1 t 19.9 -1.1 TOTAL 650.2 6 153.7 142.9583.2 -6.6 123. 116.5 TOTAL~~~~~~~~~~~~~ "0,

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar January 27, 1955 January 28, 1955 01 199 -1.1 0.0 0.0 20.1 0.0 0.0 0.0 02 19.9 0.0 t "20.1 03 18.7 -2.2 " 20.2 t 04 18.5 -1.1 t2 0 20.9 i " t 05 19.9 -1.1 "t t 20.7 -1.1 " f 06 19.9 -1.1 " 20.5 -1.1 t 07 18.6 -1.1 t t 20.4 -1.1 08 18.7 -2.2 " 20.5 -1.1 " 09 20.3 - 1.1 20.7 -2.2 " 10 25.2 -1.1 7.2 4.5 25.4 -3.3 8.1 7.1 11 37.4 -1.1 18.9 16.7 34.4 -33 216 20.3 12 48.3 -1.1 32. 7 30.6 47. 3 -4.3 37. 8 34.2 13 49.6 1.1 31.5 29.7 56.2 -3.3 43.2 41.9 14 54.9 2.2 37.2 35.3 53.2 0.0 42.0 38.1 15 56.2 1.1 34.7 32.7 44.6 1.1 26.1 24.0 16 37.9 1.1 21.0 18.5 35.5 -1.1 20.1 19.5 17 29.3 -22 15.2 12.627.5 -11 8.9 8.4 18 16.1 -2.2 2.3 1.4 22.3 0.0 1.7 1.8 19 17.3 -3.3 0.0 0.0 21.4 -1.1 0.0 0.0 20 14.5 -4.4 " tH 21.4 -1.1 t 21 14.8 -3.3 " 21.4 -1.1 22 16.1 -3.3 t 21.0 -1.1 23 20.1 -1.1 r T 20.9 -1.1 t ft 24 12.9 0.0 7 t t- 21.0 -1.1 tt ft TOTAL 632 -28 200.7 1820 657.6 -28.5 209.5 195.3 -_January 29, 1955 January 30, 1955 01 20.7 -l.1 0.0 0.0 16.5 -3.3 0.0 0.0 02 20.3 -1.1 t 20.3 -1.1 t t 03 18.9 -2.2 " t 18.8 -2.2 04 17.6 -2.2 t 1. 18.9 -2.2 t 05 18.9 -2.2 " t1 20.3 -1.1 06 18.8 -3.3 " 0 t 18.7 -2.2 t 07 15.7 -4.4 " 17.6 -2.2 t t 08 13.1 -4.4 t t 17.7 -3.3 f t 09 157 -3.3 3.6 2.1 21.8 0.0 9.2 10 23.2 -5.5 15.0 11.3 27.3 -1.1 9.0 7.7 11 33.9 -5.5 28.7 25.2 39.1 -2.2 26.1 23.7 12 40.9 -4.3 38.4 34.5 43.1 -1.1 31.2 30.2 13 52.2 -4.4 41.3 38.9 48.4 1.1 35.1 33.5 14 51.2 -2,2 43.5 40.9 52.4 2.2 33.3 31.9 15 48.4 -2.2 41.7 39.3 43.0 1.1 29.3 27.9 16 42.4 -4.4 28.5 27.8 30.0 -2.0 21.3 20.1 17 27.1 -2.2 10.1 10.9 20.0 -3.0 11.6 11.7 18 19.0 -3.3 1.7 2.3 17.0 -3.0 1.4 1.7 19 20.5 -1.1 0.0 0.0 22.0 -2.0 0.0 0.0 20 21.0 0.0 ft t 22. 0 -10 e 21 20.7 -1.1 t "t 20.0 -1. " 22 19.2 -2.2 " t 19o0 -2.0 23 17.9 -.3 " 19.0 -2.0 24 16.3 -4.4 tt tl19.0 j -2,0 o 8. TOTAL 6136 -70.3 252,5 233.2 -35 199.2 8

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar January 31, 1955 February 1, 1955, 01 20.2 -1.1 0.0 0.0 23.4 0.0 0.0 0.0 02 20.2 1.1 " " 23.6 1.1 " t 03 20.2 1.1 " t" 7 1.1 04 20.2 1.1 " 24.3 0.0 " 05 20.2 0.0 0 " 24.3 "I 06 20.2 1.1 " 23.7 " 07 20-.2 0.0 t " 23.3 " 08 20.2 -1.1 " 23.1 1.1 09 20.2 1.1 " II 22.8 1.1 1.7.3 10 27.4 1.1 6.0 4.5 34.6 1.1 13.5 12.2 11 35.2 1.1 9.3 8.6 43.7 2.2 23.1 21.0 12 35.4 1.1 12.3 11.3 47.7 2.1 27.7 25.9 13 40.1 2.1 18.5 15.9 50.8 2.1 31.1 28.4 14 44.8 2.2 21.3 21.5 51.1 5.3 29.3 27.2 15 43.5 1.1 25.1 24.3 51.1 3.2 26.1 24.2 16 39.6 0.0 22.7 20.9 35.7 1.1 12.6 12.0 17 30.3 -1.1 9.9 10.4 30.3 1.1 7.2 6.9 18 21.1 -1.1 2.1 2.7 24.7 0.0 1.7 1.9 19 19.5 -1.1 0.0 0.0 20.7 -2.2 0.0 0.0 20 17.5 -2.2 t" " 20.8 -1.1 "t 21 14.8 -2.2 " I" 21.9 -1.1 " 22 15.9 -3.3 " 199 -3.2 23 19.9 -1.1 " " 15.7 -6.5 24 23.2 1.1 " T 15.7 -5.4 TOTAL 6100 1.0 127.2 120.1 69 31 174.0 16 February 2, 1955 February 3, 1955 01 15.5 -5.4 0.0 0.0 15.2 -5.4 0.0 0.0 02 15.4 -5.4 " 16.7 -33 03 16.9 -5.4 " I" 21.9 -1.1 04 19.5 -3.2 t t 21.9 -1.1 05 20.9 -1.1 it Tt 21.9 -1.1 " 06 20.7 -2.2 " t 21.7 -1.1 07 20.7 -1.1 21.6 0.0 08 20.7 -1.1 21.7 -"1 09 219021.9 0.0 6 -1.1 10 28.7 0.0 7.9 6.2 28.5 -2.2 13.8 13.0 11 32.4 -1.1 17.5 16.5 38.1 -4.3 28.2 27.4 12 43.5 1.1 28.3 27.2 44.8 -2.2 33.1 32.1 13 57.9 2.1 44.3 40.8 50.2 0.0 36.0 33.4 14 52.1 1.1 37.1 34.4 61.1 1.1 43.1 39.2 15 48.3 -1.1 28.3 28.1 49.3 2.1 33.6 30.8 16 36.8 -2.2 21.3 19.9 35.9 -1.1 19.2 17.7 17 28.5 -3.2 10.9 10.9 32.2 -2.1 13.8 13.2 18 20.7 -4.3 2.5 2.9 17.2 -5.4 4.3 4.8 19 20.9 -2.2 0.0 0.0 16.0 -5.4 0.0 0.0 20 22.2 1 19.3 -4.3 21 22.4 -1.1 t 20.6 -22 I 22 22.1 -1.1 " 14.9 -4.3 23 20 *.9 -1.1 T14.2 -6.5 IT 24 24.1 1.1 12.9 -5.4 " " TOTAL 653.7 -40 198 186.9 6394 -57.5 225.1 211.6

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar February 4, 1955 February 5, 1955 01 12.9 -4.3 0.0 0.0 24.3 0.0 0.0 0.0 02 13.1 -5.4 " 24.5 03 13.3 -3.2 " 24.3 t 04 11.1 -3.3 " 20.8 -3.2 05 11.2 -3.3 21.5 -1.1 06 11.7 -3.3 t 23.5 -1.1 07 12.6 -3.3 " 23.4 -1.1 " 08 11.6 -4.4 " 24.8 0.0 09 11.9 -5.5 " t 24.5 -1.1 10 26.3 -5.4 13.2 13.5 25.9 0.0 2.5 1.4 11 34.6 -4.3 23.6 24.2 34.1 1.1 9.0 7.0 12 41.6 -3.2 27.9 28.1 39.2 1.1 14.7 12.9 13 51.2 -5.3 28.2 27.6 41.9 1.1 19.9 17.7 14 50.2 2.1 30.9 29.1 40.4 1.1 18.0 16.5 15 46.1 1.1 24.8 23.7 33.8 -1.1 10.7 9.8 16 39.6 -1.1 18.8 17.7 32.9 -1.1 10.9 9.2 17 28.2 -1.1 9.6 9.2 27.9 -1.1 5.9 5.6 18 24.2 -1.1 2.1 2.4 24.5 0.0 1.5 1.6 19 21.7 -1.1 0.0 0.0 24.5 -1.1 0.0 0.0 20 21.7 -1.1 H" 20.7 -4.3 " 21 21.6 -1.1 " I 24.3 -1.1 22 22.7 0.0 " " 24.1 -1.1 " " 23 23.9 0.0 " 22.9 -1.1 t 24 24.1 0.0 " 22.9 0.0 "t TOTAL 587.1 -57.6 179.1 175.5 651.6 -15.2 93.1 7 February 6, 1955 February 7, 1955 01 21.6 -2.1 0.0 0.0 23.3 -1.1 0.0 0.0 02 23.9 -1.1 " 23.1 0.0 t 03 23.9 -1.1 " 23.1 I 04 23.9 -1.1 t 22.9 It " 05 23.8 -1.1 t " 22.9 t I 06 23.6 -1.1 tI 22.7 I It It 07 23.6 -1.1 " 23.1 I 08 20.9 -2,1 " It 23.4 i 09 22.2 -2.1 1.9 1.4 24.9 1.4.6 10 28.9 -2.1 9.6 9.2 32.9 1.1 15.8 10.1 11 32.8 1.1 13.2 11.6364 -1.1 26.7 21.0 12 40.6 2.1 19.8 17.6 43.6 2.1 29.9 27.6 13 45.8 3.2 27.6 24.5 45.8 2.1 29.1 26.3 14 54.8 2.1 34.7 30.3 43.3 1.1 24.5 22.4 15 45.8 2.1 32.3 28.9 56.3 6.4 36.6 32.9 16 38.0 1.1 16.9 15.0 30.2 1.1 14.4 13.5 17 31.5 1.1 10.2 9.2 36.6 -1.1 20.7 20.1 18 25.1 0.0 1.8 2.4 20.8 -2.1 4.4 4.8 19 22.1 -1.1 0.0 0.0 17.2 -3.2 0.0 0.0 20 23.4 -11 "16.6 -3.3 21 23.3 -1.1 " t 18.5 -3.2 t 22 23.3 -1.1o " I 17.3 -4.3 23 23.4 -1.1 6. 1907 1 t 24 23.4 -1.1 " 17.5 -1.1 t TOTAL 68 -8T8 68.0 150.1 7 -7.7 203,5 179 3 10

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar February 8, 1955 February 9, 1955 01 17.6 -2.2 0.0 0.0 24. 0.0 0.0 0.0 02 19-9 -2.2 25.0 03 16.9 -3.3 " 25.0 " t 04 19.9 -2.2 24.8 05 21.1 -1.1 " t 24.9 t o6 22.1 0.0 " 25.0 " " t 07 21.1 -1.1 It " 25.0 " " 08 21.3 -1.1 " t 25.0 09 23.9 0.0.9.3 26.3 "t 5.3 10 29.5 0.0 9.0 7.2 27.4 " 3.2 1.5 11 36.8 0.0 18.6 16.8 32.6 1.1 9.2 6.8 12 45.2 -1.1 30.3 27.0 43.1 2.1 21.3 18.0 13 43.6 1.1 28.4 25.7 41.o 4.3 19.5 18.3 14 46.4 2.1 26.4 23.6 49.6 3.2 25.7 22.2 15 46.4 0.0 30.5 27.5 42.9 3.2 22.7 20.1 16 38.5 -1.1 24.6 21.9 37-9 1.1 17.6 15.5 17 31.0 -1.1 9.5 9.0 33.9 0.0 11.6 10.1 18 25.7 -1.1 4.2 4.7 24.8 -2.1 3.2 2.9 19 25.0 -1.1 0.0.5 21.3 -2.1.2 0.0 20 24.9 0.0 "I 0.0 22.5 -2.1 0.0 " 21 24.9 t tI 23.8 -1.1 22 24.9 tt " I It 21.9 -1.1 23 24.7 " " I It 23.1 -1.1 " " 24 24.7 " t " 22.9 -1.1 " " TOTAL 676. -15.5 182.4 164.2 694.5 ~43 134. 7 115.7 Februay 10, 1955 February 11, 1955 01 22.8 -1.1 0.0 0.0 19.9 -1.1 0.0 0.0 02 22.4 -1.1 t t " 19.8 -1.1 II 03 22.2 -1.1 It 19.9 -1.1 I If 04 21.9 -1. I 19.9 -1.1 I 05 21.9 -1.1 I i 19.6 -1.1 1 06 21.8 -1.1 t " 19.8 -1.1 07 21.4 -1.1 I t 19.7 -1.1 t I 08 21.0 -1.1 it 19.8 -1.1 t 1" 09 24.9 -1.1 2.4.6 20.9 -1.1 2.1.5 10 32.5 0.0 12.3 10.9 27.7 -1.1 11.9 9.3 11 44.5 0.0 24.8 23.4 42.5 0.0 2.0 1.6 12 50.9 1.1 33.5 31.9 46.4 1.1 30.8 28.7 13 53.0 2.2 34.4 32.7 52.9 2.2 34.8 33.2 14 51.9 1.1 31.4 29.9 53.1 2.2 34.9 32.9 15 48.1 1.1 31.1 28.9 47.7 1.1 31.5 29.6 16 40.0 1.1 22.1 20.9 43.9 0.0 26.1 24.6 17 33.6 -1.1 11.4 11.9 30.9 1.1 12.8 12.5 18 24.5 0.0 3.0 3.8 24.5 0.0 3.9 3.9 19 20.6 -1.1.2.2 22.1 -1.1.2.2 20 20.7 -1.1 0.0 0.0 19.6 -1.1 0.0 0.0 21 21e.9 -1.1 t l 20.9 -1. 1 " 22 20.6 -1.1 21.0 -1.1 " " 23 20.4 -1.1 " 21.1 0.0 24 20.2 -1.1 tt II 21.1 0.0 * TOTAL 7037 -110 206.6 195167-17 -7.7 213.0 197.0 11

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar........ February 12, 1955 __.. February 13, 1955. 01 21.1 -1.1 0.0 0.0 21.1 -1.1 0.0 0.0 02 21.0 -1.1 tl I 20.9 -1.1 03 20*.9 -1.1 " e1t 8.3 -3.3 04 20.9 0.0 " 18.3 -2.2 05 20.6 " tt "15.2 -5.5 06 20.5 " " 17.3 -2.2 07 20.3 " t 19.3 -1.1 08 20.2 " t 19.4 0.0. 09 21.7 -1.1 2.1 1.1 22.3 -1.1 1.9 1.1 10 29.7 -1.1 11.3 10.2 31.8 1.1 10.7 8.7 11 41.5 -1.1 25.4 23.7 40.1 2.2 19.7 17.4 12 44.7 -1.1 33.2 31.9 43.4 2.2 22.8 20.4 13 60,4 1.1 45.5 42.6 46.5 2.2 26.3 23.7 14 64.5 1.1 47.9 45.0 48.5 2.2 27.5 25.4 15 45.7 1.1 28.1 26.6 46.2 2.2 25.9 23.9 16 45.5 1.1 26.7 24.3 39.8 1.1 19.8 17.9 17 29.9 -2.2 13.1 12.0 32.2 1.1 11.6 10.7 18 23.3 -3.3 4.1 4.5 24.4 0.0 2.9 2.9 19 18.0 -3.3.2.2 21.9 -1.1.2 0.0 20 19.8 -2.2 0.0 0.0 21.7 -1.1 0.0 21 21.4 -1.1 " 22.5 -1.1 22 20.3 -1.1 " t 21.6 -1.1 " 23 19.6 0.0 " 21.5 -1.1 24 20.9 0.0 " 17.3 -2.2 TOTAL 692.4.5 2376 222.1 61.5 -11.0 163 152.1 February 14, 1955 February 15, 1955 01 17.1 -3.2 0.0 0.0 15.1 -2.2 0.0 0.0 02 18.2 -2.2 15.3 -2.2 03 16.6 -4.3 " t 18.6 -1.1 t 04 16.2 -3.3 " 21.9 1.1 05 17.1 -1.1 " 22.7 1.1 " 06 20.7 -11 " 24.1 1.1 07 22.2 -1.1 " "t 23.1 1.1 08 22.4 0.0 " 24.4 0.0 09 22.4 " 1.1.3 24.3 0.0 1.2.6 10 36.3 15.2 13.4 32.2 -1.1 18.0 15.0 11 41.5 " 20.1 17.4 42.6 2.1 20.7 19.7 12 48.1 -1.1 34.7 32.3 47.9 2.1 23.1 21.6 13 63.4 3.2 45.9 41.6 53.2 2.1 28.2 26.4 14 45.5 1.1 34.9 31.5 51.7 2.1 27.9 25.8 15 47.6 1.1 25.9 23.4 41.4 2.1 19.4 17.6 16 45.4 2.1 24.8 22.2 42.6 2.1 18.6 16.4 17 38.6 -3.2 24.6 23.1 35.9 1.1 13.5 11.9 18 23.9 -5.4 7.4 7.8 28.1 0.0 4.2 3.6 19 18.6 -3.2.3.3 24.3 -1.1.2 0.0 20 16e.7 -3.3 3 0. 0.0 24.2 -1.1 0.0 21 16.7 -3.3 "239 -1.1 22 15.5 -3.3 t23.9 -1.1 23 15.0 -2.2 " t 24.5 -1.1 t "2 14o7 -3.3 t 24.2 l-o TOTAL 674137 1234.9 213.3 710.1 1752 0 - 158.6 12

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar February 16, 1955 February 17, 1955 01 22.9 -2.1 0.0 0.0 14.5 -3.3 0.0 0.0 02 22.9 -2.1 " I 4.1 -3.3 03 24.1 -1.1 " 13.4 -3.3 04 23.9 -1.1 " "13.5 -3.3 05 23.8 -1.1 " " 14.4 -3.3 I 06 23.6 -1.1 " 12.8 -3.3 " 07 23.3 -1.1 " 12.7 -3.3 "3 08 23.2 -1.1 " f 13.9 -3.3 " 09 26.9 0.0 1.9 1.1 16.9 -3.2 9.9 9.5 10 37.8 0.0 14.9 12.5 31.9 -3.2 25.2 25. 5 11 43.7 -1.1 25.7 24.6 49.5 -1.1 37.2 36.0 12 66.2 2.1 48.6 45.3 62.6 2.1 46.4 43.1 13 65.7 2.1 47.4 43.2 70.7 3.2 57.5 43.5 14 56.4 1.1 43.8 30.9 73.8 4.2 54.0 46.2 15 58.2 -1.1 42.5 41.4 67.2 3.2 45.5 40.4 16 47.6 -3.2 36.9 34.7 53.1 1.1 32.1 28.7 17 35.5 -5.4 21.2 20.6 33.7 -1.1 13.4 12.8 18 19.4 -6.5 8.1 9.8 25.9 -1.1 6.8 7.1 19 14.8 -4.4.2.8 16.1 -5.3.5.8 20 17.5 -3.2 0.0 0.0 16.2 -5.3 0.0 0.0 21 22.9 -1.4 " 16.1 -6.4 It 22 21.6 -1.4 II 17.1 -5.3 I t.1 23 14.9 -2.2 " 15.5 -5.3 24 12.9 -33 " 18.2 -53 IT I TOTAL 749.7 -38.7 291.2 264.9 38-55.2 328.5 298. February 18 1955 Februar 19, 1955 01 18.2 -4.3 0.0 0,0 24.7 1.1 0.0 0.0 02 19.6 -2.1 " " 23.4 -1.1 t tI 03 18.2 -1.1 t I 24.6 -1.1 04 17.9 -1.1 " 24.5 -1.1 t 05 20.7 -1.1 II It 25.7 -1.1 06 20.7 -1.1 It ti 25.5 1.1 I 1t 07 18.1 -4.3 I t 25.6 1.1 It 08 19.4 -2.1. It It 24.3 1.1 II" " 09 25.0 0.0 3.5 2.4 26.6 1.1 1.5 5 10 36.6 1.1 13.8 13.1 303 1. 3.8 2.4 11 39.2 1.1 18.9 15.9 34.2 2.1 8.1 6.5 12 51.3 2.1 28.5 24.5 40.8 3.2 13.8 11.7 13 53.0 3.2 31.9 27.9 44.5 4.2 19.1 17.3 14 60.9 4.2 39.8 34.7 48.5 4.2 22.9 20.9 15 53.4 1.1 30.0 26.9 40.7 3.2 14.9 14.1 16 48.3 2.1 21.3 18.9 38.2 2.1 10.9 10.2 17 34.3 -1.1 14.4 13.4 31.9 2.1 7.2 6.9 18 23.9 -3.2 4.1 4.7 30.7 1.1 3.5 3.8 19 25.1 0.0.2.2 26.9 1.1.3.3 20 20.9 -3.2 0.0 0.0 25.9 1.o 0.0 00 21 21.8 -2.1 " I 25.9 1.1 22 23.3 -1.1 I I 24.9 1.1 2 T 23 24.7 1.1 " " 24.9 1.1 24 23.4 1.1 " I Itl 24.9.1 " " TOTAL 717.-9 -1. 20-64 182.67 1-8 31.0 106.0 9-lFi6 13

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending. Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar February 20, 1955 Feb ruary 21, 1955 01 26.3 1.1 0.0 0.0 16.9 -5.4 0.0 0.0 02 26.3 1.1 " " 16.3 -6.5 03 28.8 5.3 " 20.2 -1.1 04 30.0 6.3 " 19 9 -1.1 05 28.9 5.3 " 19.9 -1.1 06 27.6 5 3 " 20.9 -1.1 07 26.3 2.1 " 19.4 -2.2 08 23.8 1.1 " 17.8 -2.2 09 25.1 1.1 " 17.5 -4.3 6.2 3.9 10 29.5 4.2 3.3 2.4 27.3 -3.2 15.0 12.2 11 31.1 6.3 6.9 5.4 49.5 2.2 36.5 27.8 12 41.6 5.2 20.7 13.5 67.7 7.5 48.2 36.2 13 46.5 6.3 20.7 14.3 72.0 9.6 53.9 40.1 14 48.5 7.3 21.6 15.2 71.9 10.7 52.1 38.3 15 55.8 9.3 42.0 28.5 66.9 8.6 48.9 36.5 16 56.7 8.3 32.6 24.5 51.5 5.4 35.9 27.3 17 43.4 3.1 21.0 16.7 39-7 -1.1 23.3 18.3 18 27.7 -5.2 6.6 6.6 25 2 0.0 6.0 5.1 19 17.8 -7.4 0.0 0.0 21.5 -3.2 1.1.5 20 14.4 -8.5 " 19.9 -2.2 0.0 0.0 21 17.4 -74 " " 21.2 -1.1 22 22.3 -2.1 " 20.8.0. 23 21.5 -1.1 21.9 -1.1 24 16.8 -4.3 " " 20.8 -1.1 TOTAL 734.1 42.7 175.4 1271 766 0 327.1 24.2 February 22, 1955 February 23, 1955 01 19.5 1.1 0.0 0.0 18.0 -1.1 0.0 0.0 02 19.6 0.0 " 2.9 -1.1 03 16.9 -1.1 f" 21.9 0.0 " 04 17.8 -1.1 " "t 19.6 -1.1 " 05 16.2 -2.2 I" 19.7 -1.1 " i 06 16.4 -2.2 19.9 -1.1 07 18.8 -2.2 " It 19.9 -1.1 " 08 16.0 -2.2 22.4 -1.1 " 09 23.9 -1.1 6.2 4.1 26.6 0.0 4.1 3.0 10 36.1 -1.1 22.1 19.8 37.3 0.0 15.0 13.4 11 51.1 4.3 31.1 28.9 50.5 1.1 34.9 30.5 12 47.8 3.2 25.4 23.3 50.4 3.2 29.9 27.3 13 65.0 4 3 44.6 40.8 51.5 3.2 33.8 30.3 14 64.5 4.3 46.8 42.5 60.6 3.2 41.9 37.8 5 73.0 4.3 6.3 534 57.8 2.1 40.2 35.9 16 53.1 -1.1 40.2 36.8 60.2 1.1 46.5 41.9 17 32.7 -1.1 5.8 14.4 39.4 -32 28.1 26.3 18 25.8 -3.3 10.7 95 234 -6.5 11.3 11.3 19 16.3 -3.3 2.4 1.7 160.9 -4.3 1-9 1.1 20 18.8 -1.1 0.0 0.0 15.7 -4.3 0.0 0.0 21 12.9 -4. 3 " 15.6 -4.3 22 14.5 -2.2 " 18.4 -5. 4 H 23 -1. 19. 1 -t 98.4 -4.3. t 24 16.6 -2.2 " t 8.40 -4.3 " 0. TOTAL 712.7 3056275.2 7247t04 2S 7Ti 287.6 8. 14

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Slar Solar Solar February 24, 1955 Februar 25, 1955 01 20.0 -2.2 0.0 0.0 1..4 -2.2 0.0 0.0 02 23.0 0.0 " " 17.9 00. 03 22.9 -1.1 " 17 1 0.0. 04 22.7 -1.1 " 18.3 -1.1 " 05 22.1 -1 " 19.9 00 " " 06 21.4 -1.1 19.9 07 21.0 -1.1 " " 20.4 " " 08 20.6 -1.1 " 19.3 09 24.6 0.0 4.7 2.6 22.6 1.1 4.5 2.1 10 33.5 1.1 11.7 9.8 34.9 2.6 14.1 10.5 11 40.7 1.1 22.2 18.8 37.9 3.2 16.5 14.1 12 58.7 3.3 37.9 32.9 39.5 3.2 16.5 13.5 13 67.8 5.4 51 3 44.3 40.1 3.2 17.1 14.7 14 63.6 5.5 49.8 43.4 37.9 1.1 14.7 12.9 15 65.2 4.3 48.0 40.8 34 4 2.1 11.7 10.5 16 47.2 0.0 31.2 27.9 38.5 3.2 14.1 11.7 17 38.2 1.1 25.1 21.3 38.8 3.2 14.1 11.7 18 235 "4.4 10.8 10.1 28 6 1.1 6.3 2.1 19 13.9 -5.5 1.2 1.2 24.5 0.0 1.5.9 20 16.4 -4.4 0.0 0.0 24.9 " 0.0 0.0 21 13.7 -4.4 " t 24.9 t 22 11.4 -5.6 t " "25.1 23 11.2 -4.5 r" t 25.1 " 24 12.5 -3.4 " t 25.1 " " TOTAL 715.8 -19.2 293.9 253.1 650.0 20.7 131.1 104.7 February 26, 1955 February 27, 1955 01 252 0.0 0.0 0.0 17.4 -3.3 MSG. 0.0 02 25.1 i" I 18.1 - 4.3 I" f 03 25.8 t "16.3 -5.4 04 25.33 " f 16.3 -5.4 05 24.8 "t 16.2 -3.3 06 24.8 " t " 17.2 -3.3 " 07 24.6 " t I 21.3 -2.2 "t 08 24.3 ft 21.5 -1.1 t 09 27.8 1.1 10.8 1.4 24.4 1.1 " 2.7 10 3249 -1.1 20.6 11.1 35-3 1.1 " 12.0 11 46.6 1.1 28.9 19.5 46 1 6.5 22.4 12 69.5 5.3 53.4 43.9 51.9 5.4 " 26.3 13 68.7 9.6 52.1 42.5 54.2 6.4 " 30.2 14 69.2 4.3 53.3 43.8 63.4 75 " 35.4 15 69.4 4.3 53.7 44.3 42.6 3.2 " 18.8 16 58.7 3.2 42.5 35.7 43.7 3.2 " 17.1 17 38.1 1.1 20.9 17.9 35.6 2.2 " 11.1 18 26.2 -1 1 7.9 7.1 28.8 1.1 " 5.3 19 22.1 -1.1 1.2.9 23.6 0.0 ".6 20 20.8 -.1 O 0.0 0.0 23.5 " t 0.0 21 18.9 -33 t23.4 I 22 16.9 -44 TI T 23.7 1.1 T" " 23 17.3 3 T3 23.7 0.0 24 17.44 3.3 23.7 0.0 "I "I TOTAL 820.4 11.3 34- 2681 711.9 10.5 181.9 15

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. EndLng Hemis. Exch Solar, Solar Hemis. Exch. Solar Solar February 28, 1955 March 1, 1955 01 23.8 0.0 0.0 0.0 24.9 -1.1 0.0 ~.0 02 24.0 " I " "24.8 0.0 " " 03 24.0 " 23.8 -1.1 I 04 24.1 " 24.9 -1.1 05 22.7 -1.1 " 24.5 -1.1 06 22.8 -1.1 23.0 -2.1 " 07 22.8 -1.1 " 23~9 -.1 08 24.2 0.0 4.2 1.7 23.6 -1.1 " 09 25.9 1.1 12.6 9.5 26.1 0.0 1.6.3 10 36.7 2.1 21.8 18.8 36.6 1.1 13.4 10.2 11 46.2 3.2 25.9 22.8 41.6 2.1 20.9 18.2 12 48.8 4.2 37.9 33.2 48.1 3.2 27.0 23.6 13 62.4 4.2 44.4 39.2 59,7 6.4 39.8 34.1 14 58.2 4.2 30.6 32.1 70.4 6.4 53.7 48.2 15 55.2 3.2 27.6 24.0 58.9 2.1 43.7 36.5 16 52.9 3.2 14.7 12.8 59.0 1.1 44.9 38.4 17 38.8 2.1 5.3 4.5 42.3 0.0 27.9 24.6 18 27.2 1.1 1.4.5 27.8 -1.1 9.2 8.1 19 23.6 -1.1 0.0 0.0 24.2 -1.1 1.7.8 20 23.6 0.0 " 23.0 -1.1 0.0 0.0 21 23.6 " " 23.3 -1.1 22 23.8 " 24.5 0.0 " " 23 23.8 " 25.9 1.1 " 24 23.9 -2.1 25.9 0.0 TOTAL 783.0 22.1 26Ti 199.1 810.7 10.4 2838 243.0 March 2, 1955 March 3, 1955 01 25.1 1.i 0.0 0.0 22.8 0.0 0.0 0.0 02 24.9 0.0 " " 22.8 " " 03 24.2 " " " 22.9 " " " 04 23.9 " 23.3 -1.1 05 25.1 " H 23.4 0.0 06 23.5 " "23.6 0.0 07 23.3 " " 23.4 1.1 " 08 24.1 " "23-3 1.1 " 09 29.5 -1.1 8.6 7.1 27.7 1.1 4.4 3.6 10 40.8 0.0 25.1 23.9 31.6 2.1 8.1 6.9 11 50.1 2.1 27.5 25.9 40.7 5.3 17.9 15.9 12 62.9 4.3 39.8 36.9 43.3 5.3 20.1 18.6 13 63.1 4.3 46.4 42.6 46.8 6.4 24.0 22.5 14 64.5 4.3 46.7 42.2 48.3 7.5 25.2 22.7 15 62.9 2.1 45.5 41.4 46.9 6.4 25.2 22.8 16 46.4 2.1 26.9 24.6 43.2 7.5 24.0 21.3 17 37.0 1.1 18.9 17.4 36.7 4.3 15.0 13.1 18 29.2 -1.1 7.5 7.2 28.9 2.1 5.7 5.3 19 22.4 -1.1.8 1.4 25.2 0.0.8.9 20 21.3 -2.2 0.0 0.0 22.6 0.0 0.0 0.0 22 21.2 -1.1 H t23.8 " t 23 22.5 0.0 " 23.9 " 24 22.5 0.0 " 23.9 TOTAL 811.4 13.7 293.7 270.6 722.8 170.4 1536 16

THEEMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Excho Solar Solar Hemis. Exch S r S ola r Solar March 4,.19'55 March 5,.1955 01 23.9 0.0 0.0 O00 20.4 -2.2 0.0 0.0 02 25.3 " tI t 15.8 -4.3 03 23.9 "t at f 157 -4.3 04 23.9 i" 20 9 0.0 t 05 23.9 "1 23.3 1 " 06 239 " 23.6 0.0 07 23.9 1.1 I 23.4 0 " 08 25.4 2.1 232 " 6.2 09 28.0 1.1 2.6.6 27.4 4.5 2.9 10 33.1 1.1 8.7 6.3 35.1 2.1 10.9 9.3 11 41.1 3.2 20.7 17.6 41.9 3.2 17.4 15.5 12 56.7 3.2 32.6 29.1 52.4 4.3 26.3 24.5 13 58.8 5.3 43.9 38.4 53.7 4.3 27.2 25.5 14 70.4 7.4 56.1 47.9 56.5 4.2 31.4 29.6 15 59.5 4.2 42.6 37.1 48.4 3.2 27.0 25.7 16 52.6 2.1 27.6 24.3 44.8 6.5 25.9 24.0 17 38.5 1.1 24.5 21.6 36.6 2.2 15.9 16.2 18 26.4 -2.1 g9 8.7 27.2 -1.1 6.0 5.4 19 23.8 -1.1 1.5 1.7 21.9 -1.1.6.9 20 22.5 -3.2 0.0 0.0 21.9 -1.1 0.0 0.0 21 23.4 -11 "21.8 -1.1 22 23.4 -1.121.6 -1.1 H 23 23.4 0.0. t i 21.4 -1.1 24 s23.6 0.0 H.t 21.4 0.0 t TOTAL 799.3 23.3 269.8 233.3 720.3 13.7 193.7 179.7 March 6, 1955 March 7,1955 01 21.0 0.0 0.0 0.0 20.1 - ol 0,0 0.0 02 2.8 0.0 l 2 19.8 -1.1 o 03 20.5 -1.1 " 19.9 0.0 t 04 20.4 -1.1 T t19. o 8 -.1 05 20.4 -1 It 19.8 -1.1 t o6 20.3 -1.1 TI 19.6 -1.1 I 07 18.7 -2.2 19.9 -1.1 i t 08 21.5 -22.6.2 21.1 -1.1 2 1.4 09 29.3 -2.2 8.3 7.2 27.8 0.0 8.4 t 10 38.6 1.1 18.5 17.1 41.1 1.1 22.3 20.8 11 53.6 2.2 41.7 38.3 57.1 2.2 41.1 38.6 12 55.9 4.4 42.3 38.3 68.9 3.3 58.5 53.8 13 53.9 5.4 37.7 34.1 65.5 3.3 54.9 48.6 14 71.8 7.6 57.9 50.7 69o. 2.2 56.9 51.6 15 63.7 5.5 49.2 43.2 71.7 3.3 52.8 50.1 16 57.8 4.3 36.3 32.3 64.9 2.2 47.9 42.6 17 38.7 1.1 23.9 21.6 47 9 -2.2 34.1 31.9 18 26.9 -2.2 6.5 6.2 28.1 -55 16.3 16.8 19 21.7 -1.1 1.2 15 12.2 -7.7 0.0 3.6 20 2.8 -1.13 00 0.0 13.6 -6.6 0 0.0 21 20.3 -1.1 " " 2.2 6 22 21.6 0.0 " "3 6 6 23 20.1 12.5 -6.6 24 20.1 -1. 13.6 5.5 1? 3. TOTAL 79T9. 31.324.1 290.7 779.8 3 7i 395.6 358.4 17

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net. Total efl TotalNet Total Refl. Hr. Ending ~ Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar eMarch 8 1955 EMarrch 9 1955 01 13.6 -5.5 0.0 0o0 22.6 -3.1 0.0 0.0 02 17.7 -3.3 3 24.0 -2.1 " 03 18.0 -2.2 " 27.7 -8.4 " 04 16.7 -3.3 23.8 -4.2 f 05 i6.6 -3.3 " 23.8 -3.1 06 1.9 -1.1 "235 -4.2 07 22 o8 0.0 " 19.2 -5.3 08 22.8 1.1 21.3 -7.4 09 28.0 1.1 5.9 4.8 28.4 -8.4 14.9 13.6 10 41.2 33 18. 3 17.1 44.8 -3.1 31.3 26.8 11 46.8 3.2 24.7 22.9 61.3 3.1 46.7 38.1 12 51.5 4.3 31.9 28.9 74.4 7.3 57.7 45.8 13 57.4 3.2 37.8 34.2 81.8 11.5 64.8 49.2 14 57.1 2.1 36.1 32.7 72.4 7.3 54.1 40.9 15 46.3 2.1 23.7 22.0 72.4 7.3 54.5 40.8 16 47.8 1.1 23.4 22.0 63.6 5.2 49.9 36.8 17 35.2 0.0 11.9 11.7 47.3 -10.5 35.1 28.0 18 30.1 -1.1 6.1 5.8 30.5 -6.3 18.3 16.0 19 24.9 -1.1 0.0 1.0 18.6 -7.4 0.0 3.4 20 23.9 -1.1 " 0.0 17.9 -8.5 " 0.0 21 23.8 -1.1 " " 16.8 -8.5 22 24.1 -2.1 " 20.6 -5.3 23 24.1 -2.1 " 18. 802 -6.3 24 24.2 -2.1 f 20.6 -4.2 TOTAL 734.5 -7o9 219.8 203o.1 75.5 -64.6 427 3 339.4 March 10, 1955 March 11, 1955 01 24.4 -2.1 0.0 0.0 24.6 0.0 0.0 0.0 02 24.9 -1.1 t 24.4 03 23.6 -3.2 "23.1 f 04 19.2 -6.4 " t 24.4 " 05 19.3 -53 " 23.7 06 22.3 -4.2 " t 23.5 t 07 20.1 -6.3 23.6 t H t 08 25.7 -3,2 " 24. 1.1 " 09 30.9 -1.1 10.2 8.2 32.9 2.2 7.8 5.6 10 41.4 2.1 15.3 9.8 42.2 4.3 20.4 16.4 11 42.5 3.1 16.8 13.5 55.6 5.3 35,5 29.1 12 42.7 4.1 179 14.6 68.8 6.4 53.7 44.2 13 49.3 7.2 23.7 18.6 80.4 9.6 64.3 50.7 14 47.2 5.2 19.9 16.2 80.9 9.5 64.5 51.0 15 47.6 5.2 23.4 17.7 75.7 7.4 56.3 45.3 16 46.8 6.2 22.7 17.2 58.9 3.2 44.4 36.2 17 44.5 4.1 20.7 15.6 46.8 0.0 31.1 26.7 18 31.5 1.0 5.5 4.8 29.5 -2.2 13.7 11.6 19 28.7 0.0 0.0 0.0 19.2 -32 0.0 2.4 20 26.4 / -1.1 23.7 -22 " 0.0 21 27.5 -1.1 2 2. 221 -2.2 22 26.6 -1.1 22,3 -1.1 23 25.6 0.0 238 0.0 24 25.2 0,0 " " 24, 0.0 _o TOTAL 7 2.0s176.1136.2982 38.1 391.7 319.2 18

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar March 12, 1955 March 13, 1955 01 24.1 0.0 MSG. 00. 22.7 -lo. MlSG. 0.0 02 24.3 " t19.5 -3.2 t 03 25.7 t 16.9 -5. 4 t 05 25.6 " 16.6 -5.4 06 26.2 " " 232 -1.1 07 26.2 " 21.9 -11 08 26.6 " 23.2 0.0 09 33.4 1.1 " 44 329 -2.2 14.2 10 336 1.1 " 7.8 44.5 -2.2 " 31.4 11 43.2 2.1 14.6 58.4 2.1 " 396 12 45.7 6.3 " 21.0 74.8 4.3 " 51.6 13 54.4 4.2 " 25.9 71.3 4.3 " 47.6 14 56.7 7.4 " 30.4 62.2 3.2 4.4 15 48.6 3.2 " 22.9 56.9 3.2 " 33.2 16 48.6 3.2 " 24.0 50.4 4.3 " 23.8 17 39.9 1.1 15.8 38.8 2.1 " 17.1 18 30.9 0.0 " 6.3 31.3 2.1 " 6.3 19 26.0 " " 1.4 25.2 0.0 T" 0.0 20 24.5 "I I 0.024.3 t I 21 25.2 t 5.224.5 -11 " t 22 2.4.7 " IU I 24.6 1 i 23 23.0 1. It It 24.7 -1.1 I 24 24.2 I T " 24.8 -2.1 t TOTAL 787-.1 29.7 174.58318 305.2 _jjMarch 14, 1955 March 15, 1955 01 23.6 800 0.0 0T0 25.4 0.0 0.0 0.0 02 24, 1 " t " 24.1 1.1 03 25.5 "i I f 26.5 2.1 It 04 26.8 "t t t" 24.0 -1.1 " 305 26.8 I " "T 18.2 -6.4 f? 06 26.8 1.1 I" It 20.4 -6.4 07 26.8 1.1 " " 21.3 -3.2 08 26.7 1.1 2.3.5 23.6 -4.3 3.6 3.0 09 28.1 1.1 9.9 7.1 28.4 -4.3 6.8 6.5 10 41.3 2.1 17.3 14.4 36.2 -4.3 15.5 15.0 11 45.6 1.1 20.4 17.6 59.7 -5.3 55.9 40.5 12 52.3 3.1 25.8 22.7 75.2 1.1 69.3 54.3 13 50.8 4.2 26.6 23.4 82.9 4.2 70.9 57.6 14 40.5 2.1 15.0 13.4 82.9 5.3 72.2 59.4 15 36.6 2.1 13.5 12.0 79.4 5.3 66.0 54.5 16 35.8 -2.1 9.8 9.0 67,6 2.1 56.7 47.1 17 35.7 3.2 13.4 11.6 497 -2.1 41.7 36.6 18 33.1 3.2 5.4 4.9 32.9 -6.4 25.9 24.8 19 28.0 1.1 2.3 2.1 19.8 -6.4 6.6 7.5 20 28.1 0.0 00. 0.0O 4.6 -6.4 0.0.6 21 26.8 1.1 " " 18.7 -5.4 " 0.0 22 22 e7.0 " " 18.7 -5.4 " T 23 238 -1.1 " 21.3 -3.2 24 25.4 -1.1 " " 226 -2.1 TOTAL 761.7 2374 1l6l7 138.7 894 -5115 491.1 407T 19

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending___ Hemis. Exch. Solar Solar Hemis.o Exch. Solar Solar March 6, 1955 March 17, 1955 1 21.2 -3.2 00 ooo0.0 14.1 5.5 0o.0 0.0 02 22.5 -3.2 14.9 -4.4 " " 03 23.1 -2.1 " "14.9 -3.3 O4 23.8 -1.1 " 14.9 -3.3 05 23.1 0.0 " 14.4 -2.2 " 06 22.9 0.0 " 15.6 -2.2 07 22.8 1.1 " "14.2 -3.3 08 23.7 1.1 1.2.7 19.6 -2.2 6.5 4.9 09 28.8 1.1 10.8 7.3 29.7 -2.2 21.2 18.6 10 43.2 1.1 30.0 25.4 46.3 -2.2 32.9 27.2 11 57.5 3.2 45.0 38,3 55.7 -3.2 39.0 32.9 12 61.8 3.2 49.0 43.5 56.9 4.3 39.9 34.1 13 68.9 6.5 51.6 45.7 62.3 5.4 45.3 39.6 14 64.6 6.5 48.0 43.4 65.3 5.4 47.7 42.3 15 63.0 6.5 48.0 42.8 62.9 4.3 45.6 40.7 16 51.4 4.3 37.2 32.0 57.6 5.4 39.0 34.5 17 39.8 1.1 26.4 21.2 39.4 3.2 19.7 17.7 18 27.9 -1.1 10.8 7.0 31.3 1.1 10.1 9.2 19 21.5 0.0 3.6 1.8 24.6 1.1 3.2 2.7 20 20.3 -2.2 0.0 0.0 22.1 1.1 0.0.2 21 17.9 -4.3 " 22.1 1.1 " 0.0 22 16.1 -5.5 " 23.5 1.1 i " 23 14.6 -6.5 " 235 1.1 24 14.4 -5.5 "21.9 1.1 H TOTAL 798 1.0 361.6 309.1 767.7 1.7 350.1 304.6 March 8,1955. March 19, 1955 01 21.9 -1.1 0.0 0.0 23.7 0.0 0.0 0.0 02 20.8 -1. " 22.4 -1.1 03 20. 7 -1.1 " "22.4 0.0 " 04 21.8 0.0 " t 22.4 05 18.7 -2.2 " 22.5 06 15.5 -44 " 22.6 -1.1 07 15.4 — 4.4 " V24.0 0.0 " " 08 18.6 -4.4 6.9 6.0 26.8 1.1 3.6 2.3 09 32.4 -5.4 22.5 22.8 32.4 3.2 11.3 9.8 10 49.5 -2.2 40.5 38.4 42.9 4.3 20.9 18.2 11 66.3 2,2 55.5 51.0 54.9 5.3 33.5 29.6 12 78.1 4.3 67.5 59.4 69.5 7.4 46.9 41.4 13 83.3 4.3 73.5 62.4 76.3 8.4 53.1 47.3 14 84.6 4.3 74.1 63.6 66.3 6.3 44.1 39.9 15 78.3 4.3 68.7 60.o 67.6 6.3 48.0 46.7 16 65.4 1.1 58.5 52.2 61.9 3.1 42.5 38.1 17 49.8 -4.3 44.1i 40.8 42.3 1.1 18.5 17.1 18 32.5 -5.4 27.3 26.4 34.3 -1.1 13.2 12.5 19 21.7 -3.3 9.3 8.4 24.9 -2.1 2.4 2.6 20 17.2 -3.3 6.6 26.5 0.0 0.0 0.0 21 19.9 1.1 0.0 0.0 26.5 " " 22 21,8 -1.1 " "26.5 " 23 23.3 0,0 25.7 24 23.7 o,_o____25.1 " TOTAL 901.2~^H ~3549.0 492.0 59UT T4IT4l 338.0 305.5 20

THERMAL RADIATION DATA, IEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl Total Net Total Refl. TH. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar March 20, 1955 _March 21, 1955 01 24.9 o0.0 0.0 0.0 24.8 o o0 0.0 0.0 02 22.1 -2.1 " 24.9 03 23.3 -1.1 " t 25.0 " 04 22.5 -1.1 " 25.2 " " 05 15.6 -5.4 " 25.4 06 15.9 -4.4 " 25.6 07 17.2 3.3 " 25.9 " 08 23.1 -4.3 6.6 6.9 25.9 " 1.1.2 09 36.6 -3.2 23.9 22.8 29.8 1.1 4.5 3.5 10 54.9 0.0 42.5 38.1 33.7 0.0 10.5 9.2 11 70.5 2.1 57.6 49.8 34.0 0.0 10.2 9.5 12 80.7 4.2 68.1 58.1 47.5 1.1 24.6 22.2 13 85.9 5.3 72.3 60.8 54.6 2.1 31.4 29.4 14 77.1 3.2 63.6 54.8 50.9 2.1 27.8 25.8 15 75.8 4.2 58.7 50.9 53.4 2.1 30.3 27.9 16 63.5 3.2 46.5 41.1 50.5 2.1 27.3 25.2 17 47.9 -1.1 33.2 29.4 44.7 2.1 21.5 19.4 18 29.7 -2.1 14.4 13.6 34.1 1.1 11.3 10.1 19 21.7 -3.2 3.2 3.8 27.7 0.0 3.5 2.9 20 19.0 -3,2 0.0.2 25 0.0.2 21 20.0 -3.2 " 0.0 251 0.0 22 1999 -3.2 " 24.9 t 23 22.8 -1.1 t 25.0 t 24 24.4 0.0 " 24.8 It TOTAL 915.0 -19 490.6 430.3 788.5 13.8 24.0 185.5 MI arch 22, 955 March 23, 1955 01 24.6 0.0 0.0 OO 18-7 -5.4 0.0 ~ ~ 02 24.4 t 17.3 -6.4 03 24.2 "t t 15.9 -7.5 t T 04 24.3 t,i tI 15.6 -7".5 05 24,4' 15.5 -7.5 t T. 06 24.3 "t t i 15.3 -7.5 07 24.1 I ti tI 16.4 -6.5 t 08 25.5 1.4.6 20.9 -7.5 6.8 7.5 09 29.5 5.9 4.5 36.8 -5.3 25.5 23.7 10 34.6 1.1 12.3 10.9 55.0 -1.1 43.5 38.1 11 44.9 3.2 23.1 21.9 70.6 3.2 59.1 50.1 12 45.2 3.2 23.1 22.1 82.0 5.3 69.9 57.3 13 54.4 5.4 32.6 30.9 88.4 7.4 74.1 61.5 14 52.9 4.3 34.7 33.3 88.4 7.4 73.5 62.1 15 49.4 3.2 29.7 28.2 20o 4.2 53.6 47.4 16 41.4 2.1 22.9 20.9 65.9 2.1 50.4 43.4 17 35.1 1.1 11.9 11.4 45.6 0.0 27.3 24.3 18 31.4 1.1 8.9 8.4 36.1 -1.1 17.3 15.8 19 26.5 0.0 3.8 36 28.4 0.0 3.0 3.5 20 24.3 -1 1.3.8 24.5 0.0.2 21 22.9 -2.1 0.0 0.0 24.4 t" H o.o 22 18.9 -5.4 " 24.5 7 - t 71 23 17.5 -6.4 T" t. 24.1 6 H S 24 318.8 -5.4 8. 36 24.1 -. " t1 TOTAL 7435 43 210.6 19759264 -33.7 50 3T 434.9 21

THERMAL RADIATION DATA, iKWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Reflo Total Net Total Refl. Hr. Ending Hemis. Exch Solar Solar Hemis. Exch. Solar Solar March 24, 1955 March-25, 1955 o1 23.9 0.0 0.0 0.0 15.5.6.5 0o.0 0.0 02 23.9 15.1 -6.5 03 23.7 I" " 14.9 -6.5 " I 04 23.1 -1.1 " " 14.8 -6.5 "1 05 22.8 -1.1 18.6 -3.3 06 22.5 -1.1 " " 19.9 -2.2 07 22*.6 -1.1 1 18.4 -3 " 3 08 25.4 -2.2 4.1 2.6 22.4 -3.3 5.3 3.6 09 34.3 -1.1 16.7 13.9 35.6 1.1 15.8 13.5 10 45.8 2.2 27.9 24.6 50.3 2.2 33-3 29.1 11 52.1 4.3 32.3 28.5 60.2 3.3 45.0 39.8 12 62.2 6.5 41.9 37.4 73.4 5.4 57.6 49.7 13 63.8 6.5 43.8 38.6 82.8 7.5 63.3 55.1 14 74.7 8.5 55.8 47.9 94.4 9.7 77.4 65.6 15 80.9 10.7 64.8 54.6 87.6 8.6 71.3 58.9 16 70.6 5.4 55.9 47.9 71.0 5.4 52.2 45.2 17 54.0 -1.1 42.3 39.2 57.8 1.1 40.4 35.6 18 35.9 -3.2 25.8 26.1 36.9 -3.3 22.9 20.7 19 18.9 -6.5 7.8 10.1 20.0 -5.4 6.9 6.8 20 15.0 -7.5.2.6 14.3 -6.6.5.3 21 14.9 -7.6 0.0 0.0 13.9 -5.5 0.0 0.0 22 16.0 -6.5 " 13.9 5.5 " 23 15.9 -6.5 " t 14.o -5.5 24 15.7 -6.5 I 14.1 -5.5 " TOTAL 858. -9.0 4193 372.0 879.8 -31.1 491.9 423.9 March 26, 1955:March 27, 1955 O1 13.9 -5.5 0.0 0.0 16.4 -5.4 0.0 0.0 02 15.1 -4.4 " 18.0 -4.3 03 13.6 -4.4 "I 18.9 -3.3 04 17.8 -2.2 " 20.2 -2.2 05 21.8 0.0 T tt 20.1 -2.2 06 17.5 -1.1 " t 20.0 -2.2 07 13.9 -4.4 " T 21.3 -1.1 I 08 22.5 -2.2 7.1 5.6 25.2 -3.3 9.6 9.0 09 35.3 1.1 16.5 14.9 38.7 -3.3 28.8 27.0 10 45.7 6.4 25.2 23.4 58.3 0.0 46.8 41.4 11 56.4 7.4 34.1 31.7 75.3 5.4 63.0 53.4 12 68.8 7.4 47.9 43.8 85.8 8.6 73.2 61.2 13 73.9 6.4 52.7 47.4 90.9 9.6 78,0 64.8 14 73.2 6.4 51.0 45.9 91.1 9.6 76.8 64.2 15 68.7 6.4 47.6 42.9 83.5 5.4 69.6 59.4 16 62,1 5.3 40.8 36.3 72.1 4.3 58.8 50.4 17 46.7 3.2 25.1 22.8 55.3 -1.1 43.2 38.4 18 38.5 2.2 15.6 14.1 36.9 -5.4 25.2 24.6 19 26.4 0.0 4.1 4.4 21.1 -6.5 8.4 9.0 20 16.9 -5.4.2 o5 15.4 -6.5 0.0 0.0 21 14.4 -7.6.0 O. 0 MSGe MSG. " " 22 14.4 -76 T" " " 23 14.2 -7.6 " 24 14.2 -7.6 " T TOTAL 805.9 7 37 3333.7 845 -3.9 5814 502.8 22

THEMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Excho Solar Solar Hemis. Exch. Solar- Solar March 28, 1955 March 29, 1955 01 MSG. MSG. 0.0 0.0 18.1 -3.2 0.0 0.0 02 t t 18.1 -3.2 " t 03 I "t " 19.2 -2.1 " 04 t t t "19.4 -3.2 " f 05 ft " " 190 -3.2 t T o6 It I 19.0 -3.2 It 07 " " ~.3.2 17.8 -4.3 08 " 8.4 7.9 24.3 -4.3 9.3 6.6 09 39.7 -4.3 31.8 29.4 37.7 -3.2 26.1 22.8 10 54.9 -1.1 45.6 39.0 57.5 0.0 42.9 36.6 11 79.4 3.2 60.6 50.4 73.7 4.2 57.3 48.6 12 87.5 6.3 71.4 58.8 85. 4 7.3 68.1 55.8 13 92.8 8.4 77.4 61.8 92.1 10.3 74.7 58.2 14 90.3 6.3 77.4 62.4 91.2 11.3 74.1 57.0 15 81.5 4.2 71.4 58.2 86.3 10.3 68.1 52.2 16 73.8 2.1 60.6 49.8 75.3 8.3 58.5 45.6 17 56.3 -2.1 47.4 39.0 59.9 2.1 45.3 35.4 18 33.2 -6.3 29.4 24.6 43.5 -3.1 28.5 23.4 19 23.8 -7.4 11.4 9.0 26.7 -5.3 11.1 9.6 20 18.2 -4.3 0.0 0.0 19.9 -5.3 0.0 0.0 21 17.2 -4.3 " I 20.5 -5.3 T 22 16.6 -3.2 21.3 -4.2 23 18.4 -3.2 t 20.5 -4.2 tl 24 18.1 -2.2 20.7 -3.2 " TOTAL 801.7 -79 593.1 490.5 9871 67 564. 451.8 iMarch 30, 1955 March 31, 1955 01 20.7 -3.2 0.0 0.0 22.5 -5.2 0.0 0.0 02 20.1 -3.2 " t 23.2 -4.2 e t 03 19.6 -3.2 " 23.1 -4.2 04 20.0 -2.1 " t 23.2 -4.2 05 20.1 -2.1 ol " t 23.5 -4.2 " I 06 20.9 -2.1 " t 24.2 -3.1 IT 07 20.5 -2.1 " 23.0 -4.1 6 08 26.3 -1.1 10.2 8.4 26.1 -3.1 8.4 5.4 09 39.6 0.0 27.0 22.2 39.4 0.0 24.6 17.4 10 57.3 5.2 43.8 35.4 56.2 61 41.4 28,8 11 74.3 10.4 58.2 44.4 72.6 12.2 56.4 37.2 12 84.2 15.4 67.8 49.8 81.4 18.2 64.8 42.0 13 92.1 19.4 72.0 50.4 88.9 20.2 70.2 43.8 14 90.5 19.5 71.4 49.8 91.4 22.2 69.6 43.2 15 85.7 17.4 66.o 45.6 86.2 21.3 63.6 40.2 16 74.7 13.3 55.8 39.0 76.2 17.3 52.8 34.2 17 60o. 7.2 41.4 29.4 62.1 11.2 37.8 25.8 18 43.9 1.0 24.6 17.4 44.0 4.1 21.6 16.2 19 31.3 -2.1 7.8 6.6 29.7 -2.1 6.6 5.4 20 24.8 -4.1 0.0 0.0 23,2 -3.1.2.3 21 23.6 -5.2 "25.1 -3.1 0.0 0.0 22 23.6 -5.2 " " 24.3 -3.1 " " 23 23,1 -5.2 " 24.3 -3.1 1" 24 22.9 -5.2 " 21.7 -4.1 TOTAL 1019.9;6 3T~ 398-'T 1035.5 81.9 518. 339.9 23

THERAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar January 11, 1956 January 12, 1956 01 25.6 MSG. MS. S MSG. 16.1 -3.2 O.0 0.0 02 26.2 0.0 0.0 0.0 15.9 -32 03 26.2 " " 16.0 -3.2 04 26.2 t 18.2 -2.7 05 25.6 " i 17. 3 -1.1 06 25.5 t 17.6 -2.7 07 25.4 "17.8 -2.7 08 25.4 "19.4 -0.5 09 25.7.2.2 22.9 -1.6.5.3 10 30.5 -0.6 2.7 2.3 26.3 -1.1 8.7 8.4 11 33.8 0.0 8.7 6.6 36.0 -1.1 19.8 18.2 12 39-7 " 13.8 11.7 49.1 3.2 22.1 20.6 13 41.7 " 18.6 13.2 537 3.7 30.2 27.8 14 38.6 -3.2 13.2 11.4 51.4 1.6 25.9 23.9 15 37.9 -2.1 12.3 10.8 46.1 -0.5 28.8 25.9 16 34.8 -2.1 9.0 7.8 36.9 -3.7 23.3 19.1 17 29.7 -0.6 3.9 4.2 26.5 -5,3 11.7 10.1 18 25.9 -0.6.2.2 19.1 -5.9.8.5 19 24.3 0.0 0.0 0.0 19.2 -3.2 0.0 0.0 20 24.3 -0.6 " " 20.5 -2.1 t 21 19.1 -4.3 " t 21.9 -1.1 22 18.0 -4.3 " 22.7 -1.1 " 23 18.7 -3.2 "T 1 23.6 -1.1 24 18.3 -3.8 " " 22.8 -1.1 " " TOTAL 7. -254 82.6 68.4 637.0 -39.7 171.8 15-4.8 Janary 13, 1956 January 14, 1956 1 ~21.6 -2.7 0.0 0.0 14.9 -8.6 0.0 0. 02 21.2 -2.1 " 16.3 -6.4 03 21.9 -1.1 "T 15.3 -5.4 04 22.6 -1.1 t" t 16.2 -5.4 05 21.8 -2.1 It " t 16.9 -5.4 Ti t 06 22.4 -1.6 17.7 -1.6 07 23.7 -1.1 T t 19.3 -3.2 T t 08 20.7 -2.1 T" "T 18.5 -3.2 t" t" 09 18.4 -4.3.3 tI 21.5 -1.3.6.3 10 23.4 -1.1 3.8 3.0 26.8 -1.6 6.0 6.3 11 27.8 -0.5 8.7 8.7 30.7.5 10.7 9.2 12 33.7 -0.5 26.3 25.7 32.9.5 12.9 10.8 13 42.4 -1.1 333 29.9 36.0 1.6 13.9 11.7 14 48.5 11 37.5 28.8 41.4 3.2 17.4 14.6 15 47.7 -.6 32.1 23.7 375 2.1 12.3 10.2 16 42.8 -3.7 19.1 15.5 33.9.5 7.9 6.9 17 32.9 -5.3 8.7 7.4 28.8 -1.1 5.1 4.2 18 23.5 -6.9.6 3 24.1 -1.6.2.2 19 17.3 -5.9 0.0 0.0 23.3 -2.6 0.0 0.0 20 16.o8 -5 3 "I 22.6 -3.2 I tt 21 17.0 -5.4 T" 2. 23.2 -2.1 T T 22 17.2 3 7 23.2 -2.6 1.6 23 16.3 -5.4 " " 23.4 -2.6 0T 0T 24 15.5 -5.4 " "23.3 -2.1 " TOTAL 1 7. -71.1 1 0 143.587 7 -51. 6 8.0 74I4 24

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST a Ne Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar.Januay 15, 1956 January 16, 1956 01 23.3 -1.6 0o0 0.0 16.7 -7.4 0.0 o 0.0 02 23.6 -2.1 " 17.9 -6.9 " 03 22.4 -3.2 16.7 -5.8 04 20.1 -4.8 21.8 -2.6 05 22.6 -2.1 I" 22.4 -2.6 06 22.3 -2.1 " 22.6 -1.1 " 07 19.8 -4.8 " 23.8 -1.1 08 19.5 -5.3 "22.1 -1.1 09 20.2 -5.3 3 " 23.2 -1.1 ".2 10 23.1 -2.1 5.7 3.5 25.7 -1.1 2.4 1.9 11 38.6 1.1 16.5 13.2 29.9 -0.5 6.6 5 9 12 41.1.5 17.7 13.7 33.7 0.0 9.8 8.3 13 48.3 2.1 25.5 21.3 36.2 1.1 13.4 a1.4 14 44.6 1.1 21.0 17.7 36.5 1.1 14.3 12.0 15 39.5 0.0 18.9 14.9 36.7 1.1 13.9 11.9 16 29.9 -2.1 9.8 6.9 32.3 -1.6 12.5 10.5 17 25.8 -3.7 3.3 2.1 24.3 -3.2 10.8 11.1 18 21.9 -5.3.5 0.0 22.7 -2.1 1.1 1.1 19 20.9 -5.3 0.0 " 23.6 -1.1 0.0 0.0 20 20.8 -5.3 "'22.9 -1.6 " 21 20.6 -4.8 " 24.4 -0.5 22 18.7 -5.8 " 22.6 -1.1 23 19.2 -5.3 " t22.6 -1.6 24 17.9 -5.8 " 22.6 -1.6 TOTAL 624.7-72.0-'119.2 93.3603.9 -42.4 84.8 74.3 TOTAL 8NFY7 -72,0 119.2 93.3 33 January 17, 1956 Januanry 18, 1956 01 22.9 -1.1 0.0 0.0 22.1 -2,2 0.0 0.0 02 22.8 -2.1 t t" 21.2 -1.6 03 22.8 -2.1 " I 21.3 -1.1 " 04 22.8 -2.1 20.8 -2.2 " 05 22.5 -2.1 19.3 -2.2 t 06 22.4 -2.1 21.3 -2.2 " " 07 22. 5 -2.1 "22.1 -2.1 I 08 22.5 -2.1 " 22.4 -2.1 09 22.3 -2.1.2.3 23.7 -2.1.2.5 10 25.4 -1.1 2.7 2.9 25.8 -2.1 4.2 4.1 11 30.6 -0.5 7.8 7.2 32.5 -0,5 10.8 10.5 12 39.1 1.1 17.4 15.2 32.7 -2.7 20.4 21.5 13 38.3 1.1 19.2 15.9 39.8 -2.1 25.2 22.1 14 37.7.5 16.9 14.1 42.9.5 23.9 22.2 15 38.6 1.1 20.1 16.7 43.8.5 22.5 19.4 16 31.7 -1.1 9.8 8,3 32.6 -1.6 11.6 9.6 17 26.3 -2.1 5.3 3.9 24.0 -3.2 4.2 3.3 18 21.6 -2.1 5 3 22.0 -3.2.5 0.0 19 21.5 -2.1 0.0 0.0 21.9 -3.2 0.0 20 23.2 -2o. " 22.0 -3,2 " 21 22,9 -2.1 " 2.9 -2.1 22 21.5 -2.1 " 21.5 -2.1 23 21.7 -2.1 " 21.8 -3.2 " 24 20.8 -2.2 " 21.7 -2.1 " TOTAL'S6T h -33.7 99.9 14 -621.1 -4861- 123.5 113.2 25

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar January 19 1956 January 20, 1956 01 21.7 -2.1 0.0 0.0 23.2 -1.1 0.0 0.0 02 22.7 -1.1 " 23.2 -1.6 " 03 21.6 -1.1 " " 25.6 -2.1 " 04 21.8 -2.1 " " 22.3 -1.1 05 19.0 -3.7 19.2 -1.1 06 18.2 -4.3 "19 -15 1.1 07 19.6 -3.2 " 19.8 -0.5 "t 08 20.5 -3.2 209 -1.6 t 3 t 09 20.5 -3.7.3 20.0 -1.1 t" " 10 26.3 0.5 5.7 4,2 24.8 0.0 3.5 3,0 11 32.6 0.0 11.6 10.9 276 -2.2 7.8 7.8 12 39.2 0.0 18.0 17.3 31.2 0.0 12.6 12.3 13 45.2 -1.6 24.6 23.3 33.9 2.2 15.9 15.6 14 42.1 -1.1 28.1 25.5 35.2 3.2 19.5 18.5 15 42.1 -1.1 19.9 18.8 35.9 3.2 19.4 18.3 16 38.3 -1.6 11.1 10.2 33.0 *5 19.2 18.6 17 27.9 -2.6 4.8 4.7 20.8 -5.9 9.3 10.5 18 24.7 -3.2.6.2 11.9 -5.5 1.1 1.5 19 21.9 -3.2 0.0 0.0 11.9 -5.5 0,0 0.0 20 23.5 -2.1 " 148 -2.7 21 20.9 -1.6 14.9 -3.8 t t 22 23.3 -1.6 " 15.5 -2.2 t 23 23.3 -21 f 31 3-3.3 24 22.1 -1.1 " t 13.0 -4.4 t TOTAL 639.0o 9 127 115.1 531.2 -377 81.3 106.1 January 21, 1956 January 22, 1956 01 17.5 -3.3 0.0 0.0 11. -3.3 0.0 0.0 02 16.2 -0.5 14.5 -3.3 " " 03 13.3 -3.9 " 15.1 -2.7 04 10.9 -5.1 ft tt 16.5 -1.6 " 05 12.2 -3.9 T1 tt 16.8 -2.7 t t 06 11.5 -3.9 " 3f 14.8 -3.3 07 13.5 -3.3 - 3 17.5 -2.2 f 08 12.2 -4.4 " " 18.5 -1.6 09 14.8 -3.9 2.4 3.0 20.7 -0.5.5.5 10 18.1 -39 11.4 12.0 25.0 -0.5 5.1 4.5 11 27.8 -1.1 22.8 22.2 31.8 -0.5 12.8 12.0 12 39.7 -1.1 30.0 29.4 45.7 0.0 21.5 19.4 13 49.1 -1.1 36.6 34.2 38.5 -0.5 19.8 20.3 14 46.6 -1.1 39.6 32.4 42.2 -1.1 22.6 21.5 15 42.1 -2.2 30.6 27.6 43.3 -0.5 24.5 24.8 16 32.7 -2.2 16.8 16.2 38.1 0.0 19.9 19.7 17 24.7 -1.6 6.6 6.6 26.2 -2.2 8.6 10.2 18 17.2 -2.2 1.8 1.8 22.8 0.0.9 1.4 20 17.3 -2.7 i t - 23.7 t " "21 18.0 -1.4 " " 21.8 -1.1 22 12.9 -4.4 " 20.9 -11 23 10.7 -3.3 24.4 0 4.4t 24 2, -3.3 I I23t9. i.o TOTAL 507.1 6i.0 9.6198.4 13.2 -10.0 I2 26

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending eHemis. Exch. Solar Solar Hemis. Exch. Solar Solar January 23, 1956"January 2, 1956 01 23.9 0.0 0.0 0.0 21.9 0.0 0.0 MSG. 02 21.3 0.0 " 21.8 -1.1 T " 03 21.4 -1.6 " 21.7 -1.1 04 21.2 -1.1 "21.7 -1.1 t 05 19.9 0.0 e "22.5 -1.1 06 21.2 -1.1 21.6 -1.1 07 21.1 -1.1 it T 21.5 0.0 08 23.99 0.0 " " 24.2 "' t 09 23.9.8 " 24.2 ".3 10 25.9 " 4.1 3.9 28.9 " 4.1 11 31.8 t 10.5 9-6 39.5 T" 16.2 I 12 37.9 15.3 14.4 46.8 " 38.7 13 40.9 " 21.2 19.4 44.2 " 23.9 14 50.4 1.1 30.5 23.3 51.1 ~5 31.8 t 15 46.3 0.0 25.5 24.2 51.0.5 31.4 t 16 43.2 -1.6 21.9 21.2 46.2 0.0 28.4 17 25.3 -2.2 8.3 9.5 24.9 -3.2 8.1 " 18 19.7 -1.6 1.2 9 15.8 -3.2 2.1 19 17.9 -2.2 0.0 0.0 12.8 -2.2 0.0 t 20 15.8 -3.2 t 13.2 -2.7 II 21 17.9 -1.6 T t 11.0 -2.2 22 19.2 -0.5 "13.5 -2.7 " 23 19.2 -2.2 " i 13.1 -1.7 I 24 21.6 0.0 " "i 13.4 -1.7 "I TOTAL 630 -1.9 139.3 126.4 626.5 4.1 185.0 January 25, 1956 January 26, 1956 01 16.3 -1.6 0.0 MSG.o 13.9 -3.3 0.0 MSG. 02 15.7 -1.6 " T 14.5 -2.2 I 03 18.4 0.0 I 16.1 -0.6 04 15.9 -22 " 16.3 -1.6 i it 05 18.8 0.0 " 14.4 -2.2 06 19.1 -0.5 I" T14.2 -2.2 " T 07 19.3 -1.1 " 12.6 -2.8 "t 08 21.3 0.0 It, 14.1 -2.2 T T 09 24.8 ".5 " 18.2 -1.1 2.3:t 10 26.6 I 5.3 " 23.3 -1.1 9.5 11 33.6 IT 14.7 "t 37.2 -1.1 24.6 T 12 40.9 " I 22..1 i 48.9 0.0 34.9 i" 13 44.1 " 26.6 48.3 -1.1 37.9 14 47.2 " 37.1 " 50.4 -1.1 41.9 15 36.8 -1.1 18.8 " 44.2 -1.6 314 16 36.0 -1.6 18.0o 35.3 -3.2 24.6 17 26.3 -2.7 7.5 " 21.5 -27 7.2 18 17.9 -3.7 1.2 " 18.4 -1.6.8 19 17.4 -2.7 0.0 " 18.8 -1.1 o0 20 15.2 -2.2. " "I 18.6 -0.4 21 13.9 -3.2 " I 19.7 0.0 22 14.3 33 T t 19.5 I 23 13.6 -33 " 20.7 t 24 13.8 -3.3 "199 T TOTAL 567.2 -3741 151.8 579.0 -33.2 215.1 27

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending.. Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar Januar 27, 1956 January 28, 1956 01 1.9 1.1 0.0 o SG. 20 -1.1. 0.0 02 21.1 0.0 21.5 -1.1 "' t 03 21.3 1.1 t 1 21.3 -11 " t 04 22.2 00 t t 21.3 -1.1 " f 05 22.0 0.0 " 21.6 -1.1 t 06 21.0 1.1 21.8 1.1 07 20.0 -3.2 " t 21.8 -0.5 08 19.0 -3.2 " 21.8 -1.1 09 20.0 -4.3 1.7 " 20.1.5 1.1 t 10 24.2 -1.1 13.5 " 28.7.6 2.1.9 11 34.5 -0.5 25.1 27.5 0.0 4.9 4.1 12 43.9 -0.5 29.1 28.9 -0.5 6.6 5.6 13 50.9 0.0 38.9 32.2 ~5 10.7 9.5 14 49.4 0.0 40.2 37.5 1.1 12.9 13.1 15 46.4 -1.1 34.5 " 35.8 1.1 12.3 8.4 16 37.9 -2.7 24.2 29.6 0.0 6.8 7.5 17 24.7 -4.3 11.1 25.9 -1.1 2.9 3.6 18 16.5 -6.4 1.2 23.5 0.0.6.9 19 14,6 -7.5 0.0 "22.8 " 0.0 0.0 20 12.9 -6.5 "t t 24.2 " "t t 21 13.4 -7.5 24.6 22 15.3 -5.9 t 23.5 23 17.7 -3.2 t t 24.2 24 20.0 -1.6 " 23.6 -11 " TOTAL 607.8 -58.4 219.5 604.5 -7.1 60.9 53.6 January 29, 1956 January 30, 1956 01 25.5 MSG. 0.0 0.0 22.9 0.0 0.0 0.0 02 22.8 -0.5 " 23.1 -0.5 03 22.5 -0.5 " t 22.8 0.0 f 04 22.5 -0.5 t 21.5 -1.1 " " 05 22.3 -0.5 t 22.7 -1.1 06 21.9 -0.5 f t 22.7 0.0 ft 07 22.9 -0.5 " t 22.5 08 22.7 0.0 ft t" 22.4 09 27.6 -0.5.3 *5 2330 5.3 10 27.4 0.0 5.3 5.1 25.8 " 5.4 4.8 11 29.8 1.1 9.8 9.2 29.9 -1.1 13.5 12.0 12 38.3 2.1 20.6 18.6 42.3 -3.2 25.5 23.3 13 42.9 1.6 23.9 22.1 49.8 -2.1 395 36.5 14 44.4 2.7 27.9 26.1 47.9 -1.1 38.6 37.9 15 41.2 1.6 15.8 15.3 45.6 -1.1 32.7 30.0 16 29.3 5 8.7 8.636.2 -0.5 21.6 20.9 17 25.1.5 4.5 3.6 26.3 0.0 7.8 5.9 18 23.0 -0.5.6 1.1 19.6 -3.2 2.1 1.9 19 21.7 -0.5 0.0 0.0 20.9 -0 5 0.0 0.0 20 21.8 -0.5 t 22.6 0.0 t 21 21.9 -0.5 " 22.8 22 22.5 0 t 22.1 t 23 22.0 " t22~.40. 24 23.1 t f t.1 22.3 " TOTAL 6459..1 4 9 7 4 110.2 660. -15.5 87.2 1733.5 28

TERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar January 31, 1956 February 1, 1956 01 2.9 -1.6 0.0 0.o0 20.1 -0.5 0.0 0.0 02 22.1 0.0 " 21.4 0.0 03 22.1 " 21.8 " " t 04 22.1 i t 21.7.7 05 21.9 " t o 21.5 -0.5 06 21.3 -0.5 " 22.2 0.0 07 21.6 0.0 t Ht 19.5 -1.6 " T 08 23.4 -1.1 " " 19.0 -0.5 09 22.8 -0.5.9 1.1 22.9 -0.5.9 1.5 10 26.2 -0.5 7.4 7.4 27.5 -0.5 7.7 8.4 11 34.1 2.7 88 5150 33.5 -0.5 17.4 17.4 12 49.8 1.6 33.0 30.2 41.2.5 22.8 21.4 13 52.3 3.7 37.1 35.4 45.1 1.6 25.4 24.0 14 45.6 6.9 29.7 28.9 45.1 0.0 25.4 24.5 15 42.3 4.8 28.2 26.7 41.5 0.0 25.2 21.9 16 42.9 1.1 18.5 16.9 35.3 -0.5 20.7 14.1 17 30.7 1.1 9.8 10.1 27.4 -2.7 11.7 11.4 18 23.2 0.0 1.9 2.4 21.1 -1.1 2.4 2.4 19 22.4 " 0.0 0.0 20.2 -1.1 0.0 0.0 20 22.4 T 20.9 0.0 o 21 22.6 " 21.3 0.0 22 22.1 " t.8 -22 "1 t 214 21e.9 t fl t? 21.9 -1.1 "t t TOTAL 679. 17.7 185.3 174.1633.1 1 156 7.0 February 2, Febra 1956 01 21.3 -1.6 0.0 0.0 14.3 -2.3 0.0 0.0 02 21.5 -1.6 " 14. 3 -2.3 t tH 03 20.8 -2.2 "t T 13.5 -2.3 t T 04 21.9 o0.0 " t11.0 -1.7 T tt 05 23.1. H, 11.3 -2.7 06 22.3 H" IT 12.5 -4.9 tH 07 22.1 I t T12.4 -3.8 t ft" 08 21.8 -1.1 t 12.5 -5.5 i f 09 22.2 -1.6 1.5 1.7 15.2 -8.2 4.7 4.1 10 28.8 0.0 10.1 9.8 22.7 -9.8 20.1 19.7 11 33.9 0.0 15.8 14.4 34.8 -4.9 31.7 30.9 12 36.7.5 18.8 17.3 46.8 -3.2 42.2 38.6 13 36.3.5 17.7 16.5 56.5 -3.2 53.7 42,8 14 36.8 1.1 20.6 19.1 54.9 -16 40.7 37.1 15 32.9 1.6 13.2 14.3 50.8 -0.5 32.3 28.9 16 33.7 1.6 14.9 13.8 45.5 -1.6 27.8 26.9 17 22.4 -4.3 9.8 10.5 26.8 -3.7 14.7 18.0 18 18.7 -5.4 21.4 4.7 20.8 -5.3 3.5 7.2 19 19.1 -2.7 0.0 0.0 17.1 -53 0.0 0.0 20 16.9 -2.2 " 19.3 -3.2 21 15.8 -3.3 " 22.1 -1.1 " 22 13o7 3 3 22.1 -1.6 2, " 23 12.0 -2.8 " t22.3 -2.7 " 24 13.8 -2,2 _" "217 -2.1 " " TOTAL 5685T -29.0 TT1241.8 221601.2-35 271-4 254.2 29

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar February 4, 1956 February 5, 1956 01 16.7 -5.8 0.0 0.0 23.4 -1.1 0.0 0.0 02 19.9 -2.2 " t1 22.7 -2.1 03 18.5 -3.8 T 23.2 -2.1 04 18.7 -2.7 ". 23.1 -2.1 " " 05 19.1 -2.2 " 21.7 -2.1 " o6 18.4 -1.1 t 22.4 -2.1 t 07 173 -2.7 " 22.9 -1.6 08 18.4 -1.6 22.3 -1.1 09 18.4 -4.3.9 1.1 24.2 -1.1 1.1 1.1 10 23.6 -3.3 7.9 59 26.9 -1.1 4.8 4.8 11 30.8 -1.1 17.4 16.1 28.9 0.0 6.2 5.9 12 37.5.5 23.6 21.3 33.6 " 11.7 10 9 13 43.3 0.0 30.0 26.9 37.1 " 15.5 12.9 14 40.7 1.1 25.4 22.9 37.6 " 16.1 14.3 15 33.9.5 13.2 12.8 31.4 -1.1 10.5 9.8 16 30.4 1.1 10.2 9.3 29.8 -1.1 7.8 8.3 17 28.9 0.0 56 4.9 26.4 -1.1 57 51 18 24.3 0.0.8.9 22.3 -1.1 1.1.9 19 23.9 -1.1 0.0 0.0 20.6 -2.1 0.0 0.0 20 23.8 -1.1 " 20.9 2.1 t 21 23.9 -1.1 " 21.0 -2.1 22 24.1 -1.1 t " 21.1 -3.2 t 23 23.9 -1.1 "t 20.0 -3.2 24 23.6 -1.1 t I 20.1 -3.2 I" t TOTAL 602.0 34.2 135.0 122.1 603.6 -36.8 80.5 74*.0 February 6, 156 February 7, 1956 01 20.0 -3.2 0.0 0.0 14.1 -3.3 0.0 0.0 02 19.8 -2.1 " 17.3 -2.2 03 21.8 -2.1 " H 18.3 -3.2 " 04 22.4 -1.6 t 18.2 -2.7 05 21.3 -3.2 " " 24.4 0.0 06 22.5 -1.1 " H 25e.1 H t 07 22.6 -1.6 tH t 25.2 tH H 08 24.9 0.0 " 1t 25.4 "i 09 27.5 0.0.6.6 25.7 " 1.1 1. 10 29.9 1.1 4.9 4.9 29.7 1.1 6.2 6.2 11 33.1 1. 1 10.4 9.6 39.9 -0.5 201 20.1 12 35.8 2.1 15.2 11.1 50.1 -1.1 36.5 36.5 13 39.4 1.1 19.8 18.8 54.3 0.0 37.7 37.7 14 41.2 2.6 20.7 18.8 55.5 0.0 46.2 39.0 15 41.9 2.1 20.9 19.2 49.9 -0.5 37.5 34.5 16 36.7 2.1 15.8 14.7 37.0 -0.5 22.1 20.7 17 30.3 -1.1 11.3 9.2 22.1 0.0 15.3 14.7 18 23.1 -4.2 5.3 6.5 24.6 -4.8 5.3 5.3 19 19.5 -37 0.0.2 18.3 -5.8.2.2 20 18.4 -3.2 " 0.0 21.1 -2.1 0.0 0.0 21 17.9 -2.1 " 23.8 0.8t0 22 17.4 -24 "24.1 -0.5 " 23 16.5 -2.7 24.8 0.0 t 24 716.2 -3.3 24.3 0.0 " TOTAL 620.1 -54 124.9 36693.2 -26.1 2282 210 30

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Refl. Solar Solar Hemis. Exch. Solar Solar February 8, 1956 February 9 1956 01 24.5 0.0 0.0 o 615.3 -3.8 0.0 0.0 02 24.6 -1.1 I" 15.1 -2.7 03 24.6 0.0 " 15.9 -5.4 04 23.9 -0.5 15 1 -5.9 05 20.6 -4.2 " 1t 14.6 -3.8 06 19.5 -2.7 " 13.5 -4.9 07 23.6 -1.1 14.4 -5.4 08 24.9 -0.5 " t21.7 -1.6 " 09 26.9 0.0 1.1 1.1 24.8 -11 2.3 2.3 10 30.4.5 7.8 6.9 29.3 -0.5 8.1 7.2 11 33.2 1.1 12.3 10.1 36.6 1.1 14.1 12.6 12 36.9 2.1 14.1 12.9 41.1 2.1 20.7 18.2 13 44.8 2.6 21.5 19.9 44.7 2.6 22.7 20.9 14 47.8 2.6 27.6 26.3 48.3 2.6 27.2 23.7 15 42.9 1.6 24.2 22.1 46.9 3.7 22.8 21.9 16 40.2 2.1 24.5 22.7 44.8 1.6 22.5 20.9 17 33.6 -3.7 19.2 18.8 32.2 0.0 10.2 9.2 18 20.8 -6.9 5.1 6.8 24.3 -1.1 2.3 2.6 19 16.9 -5.9.2 *5 24.6 -1.6 0.0 0.0 20 16.5 -48 0.0 0.0 22.6 -2.1 " 21 15.9 -3.2 T" t 21.3 -3.7 t 22 15.3 -3.8 t" 21.8 -3.2 f 23 14.4 -3.8 "24.2 -3.2 24 14.7 -4.3 " 25.6 -3.2 t" "t TOTAL 6374 -33.9 157.6 148.1 638.7 -39.5 152.9 139.5 February 10, 1956 February 11, 1956 01 26.3 0.0 0.0 0.0 25.9 0.0 0.0 0.0 02 23.7 -1.1 V" It 25.9 II 9 It 03 23.1 -1.3 T" It 24.3 VV t 04 25.8 -0.5 it 24.0 t 05 25.1 0.0 II " 24.2 V" "t t 06 26.3 i" it Vr 24.3 07 25.0 "t II It 24.7 " V t 08 26.7 I" IV tt 23.7 t t 09 26.7 " 1.7 2.1 25.2.8.5 10 27.1 1.1 6.8 6.3 27.3 V 3.6 4.2 11 30.8 0.0 8.3 8.3 31.2 1.1 8.6 8.4 12 34.7 3.7 15.4 15.2 32.7 1.6 12.6 12.0 13 41.3 3.7 19.9 17.7 39.3 2.1 16.5 16.2 14 40.5 3.2 19.1 17.4 37.4 1.6 16.1 15.0 15 39.1 3.2 17.3 16.4 32.1 2.1 12.6 12.0 16 33.3 1.6 11.4 10.9 31.2 1.1 10.1 9.6 17 30.6 0.0 7.1 7.1 27.5 0.0 4.7 4.8 18 26.7 2.4 2.7 27.7 1.4 1.8 19 25.0 " 0.0.2 26.3 " 0.0 0.0 20 24.8 " VI 0.0 26.3 It. 21 24.5 " It lt 23.9 t 22 24.4 " Vt H 23 *.9 H 23 24.7 lt 1 -26.4 " f 24 25.9 26.5 - " TOTAL 682. 1013.6109.4 10*4.3T9 96 8770Q 84 ~5 31

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar February 12,.1956Februa.y 13, 195 01 252.0 0.0.0 0.0 241 -1.1 0.0 0.0 02 25.5 " 19.5 -2.7 03 25.6 t t 21.7 -3.8 O4 25.9 " 18.1 3 -4.3 05 25.7 1 17.6 -5.4 06 25.7 "l 6.4 -4.3 07 25.7 " f" t 17.1 -3.8 08 25.9 " 15.0 -3.3 09 25.8 ".2.5 20.4 -3.8 7.4 7.1 10 27.5 " 1.7 1.8 30.1 -2.7 22.5 21.9 11 32.5 -1.6 7.9 7.5 33.7 -0.5 23.1 22.5 12 42.7 3.2 22.5 20.4 43.6 1.6 25.1 24.5 13 44.6 2.6 26 248 42.4 1.6 24.0 23.1 14 44.7 3.7 22.7 21.5 39.0 1.1 15.3 15.6 15 53.7 36 354 32.1 32.6 1.1 9.8 10.1 16 39.9 2.1 18.8 17.7 32.6.5 8.9 9.2 17 34.6.5 14.9 13.9 28.1 2.1 3.9 4.1 18 27.4 0.0 3.9 4.1 24.9 2.1 1.8 2.1 19 19.6 -3.2.2.8 23.6 2.1 0.0 0.0 20 21.3 -1.6 0.0 0.0 23.6 1.6 21 23.8 0.0 " 23.5 1.6 It t1 22 20.8 -2.7 23.6 1.6 t 23 22.5 -1.1 t 18.2 -4.8 24 24.8 0.0 " t 15.5 -5.4 I f OTAL 711.2 5.5 1543 145.1 604.9 -289 11.8 140.2 Februar 14, 1956 February 15, 1956 01 21.6 -2.1 0.0 0.0 23.4 0.0 0.0 0.0 02 23.6 0.0 t " 23.3 03 22.2 -4.8 " t 23.0 04 17.6 -5.9 f 23.0 05 19.3 -4.3 t" 22.9 f tt t 06 20.1 MSG. ft ft 22.9 t ft ft 07 21.1 MSG. t 23.0 t t 08 19.6 -2.2 t 23.1 " tf 09 23.8 -1.6 30 2.7 24.5 " 2.6 2.1 10 29.6 -1.1 12.0 10.2 29.9 " 11.6 10.9 11 43.7 1.6 27.3 242 378 23.6 216 12 52.5 3.3 38.6 34.9 43.5 1.1 30.8 28.5 13 56.1 5.4 43.1 38.7 57.0 0.0 42.3 39.3 14 56.9 6.5 41.9 38.9 57.9 1.6 45.2 44.1 15 42.1 3.8 26.7 242 49.5 27 36.9 35.7 16 38.7 2.7 20.7 18.8 40.9 0.0 29.1 31.8 17 31.6 5.4 11.4 11.3 31.0 " 13.2 12.6 18 26.2 0.0 3.0 3.5 24.4 4.1 4.4 19 23.3 " 0.0.5 23.3 0.0.2 20 23'.3 "' ~0.0 23.4 ". 0.0 21 23.6 " t 21.4 -0.5 22 23.4 t " 17.5 -3 " " 23 23.1 " a5.2 -3.3 I 24 23.5 f" 1 4. 2 -2.7 " " TOTAL T 7067227.7 207.9696. -4T4 2Q39 231.2 32

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar February 16 56February 17, 19656 01 17.9 -1.6 0.0 0.0 22.1 0.0 0.0 0,0 02 18.3 -1.1 " 24.8 t 03 19.5 -0.5 " 24.8 " 04 18.9 -1.1 "25.0 t 05 17.8 -0.5 " 25.2 " 06 18.5 -1.1 24.6 07 20.2 -0.5 23.3 " 08 22.7 0.0 22.6 09 26.0.5 2.6 2.6 25.5 -0.5 1.4 1.5 10 32.8 1.6 11.1 10.7 32.5 -1.1 9-3 7.9 11 39.9 3.7 20.6 18.9 40.6 2.7 18.8 16.5 12 47.6 3.2 29.9 28.2 53.6 2.7 31.7 28.1 13 47.5 4.3 31.8 29.3 55.8 1.6 44.3 38.3 14 48.5 2.7 30.3 29.4 46.1 3.1 27.8 25.4 15 43.9.6 24.8 22.7 43.2 2.2 20.9 19.2 16 38.1 0.0 19.9 18.0 35.2 1.6 16.7 15.6 17 30.3 -1.6 10.4 9.5 28.7.5 8.7 9.3 18 24.4 -0.5 3.5 3.6 24.9 0.0 2.4 3.0 19 22.5 -1.1 0.0 0.0 22.4 -1.6.2.8 20 22.5 -1.1 22.7 -2.2 0.0 0.0 21 22.0 -1.1 " " 23.1 0.0 " 22 21.5 -1.1 I 1 "22.7 -0.5 23 20.9 -1.1ll 23.1 0.0 f" 24 21.7 -1.1 " 2 23.5 0.0 " "t TOTAL 6639 1.5 184.9 172.9 716. 8 182.2 165.6 February18, 1956 February 19, 1956 01 23.6 0.0 0.0 0.0 21.0 -1.1 0.0 0.0 02 23.6 -21 " 21.8 -1.6 03 22.9 -2.7 " 22.7 -0.5 " 04 22.1 -3.8 "t 21.7 -0.5 " 05 20.7 -5.4 " 20.8 -1.1 06 21.7 -3.2 "t 21.9 -2.2 t 07 21.5 -2.2 " " 20.6 -1.1 t 08 22.4 -1.1 " 21.1 -0.5 09 24.6 0.0 1.9 2.3 23.7 -1.1 1.7 1.8 10 35.5 4.3 14.7 12.2 29.2 1.1 9-5 8.9 11 46.4 8.5 28.2 25.7 36.2 2.2 22.8 21.9 12 54.7 8.5 41.7 37.4 41.9 1.6 35.1 31.1 13 59.8 5.9 51.6 46.8 49.7 3.2 36.9 34.4 14 59.0 3.7 53.4 45.9 56.9 2.7 39.8 36.8 15 55.8 1.1 43.9 38.7 57.3 4.3 40.7 39.2 16 49.1 -2.1 39. 2 37 9 38.3 1.1 22.5 22.3 17 36.2 -4.8 23.9 25.7 30.5 1.1 10.9 11.3 18 21.8 -5.4 7.1 9.5 24.7 -0.5 4.2 3.3 19 15.6 -5.9.3 1.2 22.4 0.0.2.6 20 14.4 -4.3 0.0 0.0 21.1 -1.1 0.0 0o0 21 16 -37.2 20.9 -1.6 " 22 18.9 -2 22.2 -1.6 " 23 22.5 0,0 11 20.2 -2.2 " 24 21.7 -1.6 20.3 -1.1 TOTAL 731.2 -185 305.9 2-3 687T -0.5 22 2110.6 33

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar Februar 20, 1956 Februar 21, 1956 01 20.9 -1.6 0.0 0.0 20.3 -2.2 0.0 0.0 02 20.8 -2.2 " 19.8 -2.2 03 19.7 -1.619.9 -2.2 04 20.4 -1.6 ff tt 20.4 -2.2 f 05 20.3 -2.2 " " 20.5 -2.2 06 19.5 -3.2 " t 20.5 -2.2 07 20.1 -2.7 " 20.4 -2.2 08 18.8 -3.8 " t 20.3 -2.2 09 22.4 -3.2 5.7 5.7 22.9 -1.6 4.1 4.1 10 35.9 1.1 16.7 15.6 31.3 -0.5 16.1 16.5 11 397 1.1 29.4 28.8 38.7.5 23.2 21.0 12 59.1 5.9 4.1.7 39.6 43.9 1.6 31.9 29.1 13 54.4 4.8 37.8 36.0 63.1 3.7 54.5 53.7 14 58.2 3.7 40o8 39.5 66.2 3.2 55.8 53.6 15 52.2 2.7 38.6 37.9 58.3 0.0 48.8 43.4 16 45.7.5 27.0 27.3 53.9 -0.5 41.3 34.5 17 34.4 00 13.8 12.836.6 -3.2 25.5 23.7 18 24.6 -1.1 4.1 3.6 18.8 -7.6 9.3 9.8 19 21.3 -2.2.2 *5 14.2 -7.6.5 1.1 20 21.5 -2.2 0.0 0.0 13.7 -7.6 0.0 0.0 21 21.5 -2.2 t 14.2 -7.6 t 22 21.4 -2.2 " 15.4 -8.1 23 21.3 -2.2 ".14.5 -7.6 t t 24 20.9 -2.2 t t 16.9 -5.4 5.t TOTAL 715.0 -166 255.8 473 4 7 -5.9 311.0 290.5 February 22, 1956 February 23, 1956 o1 20.5 -2.2 0,0 0.0 O1.8 -O5. 0.0 0.0 02 20.8 -1.4 t t 14.2 -5.5 03 22.4 -2.2 " t 15.1 -55 t t 04 21.1 -2.2 " 15.3 -5.5 05 20.5 -2.8 " 14.3 -5.5 06 20.1 -2.2 " t12.5 -5.0 " "07 19.8 -2.2 " t 12.9 -3.4 08 20.0 -2.2 " 14.7 -34.5 1.1 09 19.4 -1.1 3.5 3.2 18.7 -3.3 6.8 8.6 10 29.4 0.0 13.9 13.1 25.9 -5.5 20.7 25.9 11 38.1 1.6 28.8 25.9 45.9 -3.2 37.8 37.8 12 58.0 1.1 47.4 42.6 6.9 -1.6 49.2 4 3.5 13 68.0 0.0 57.3 51.6 61.9 0.0 53.9 45.6 14 67.8 1.1 57.0 50.1 60.7 t 51.8 44.4 15 58.3 0.0 50.5 45.8 54.9 40.9 35.3 16 48.2 -1.6 405 37.5 49.4 1.1 36. 32.1 17 352 -4.3 26.6 25.4 36.2 0.0 20.4 16.8 18 20.6 -8.1 10.2 9.0 24.5 -4.3 75 6.9 19 14.3 -7.6.5 0.0 21.2 -4.8 3.5 20 12.8 -60 0.0 23.7 -1.6 0.0 0.0 21 14.1 -5.5 " ft 19.4 -2.7 22 14.9 -6.5 " 19.2 -2.1 23 13.8 -5.4 " "19.7 -0.5 " 24 13.7 -5.5 " 23.1 -0.5 l TOTAL Yl 304.268. -6. 36258 298.5 34

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar February 24, 1956 February 25, 1956 01 25.9 0.0 0.0 0.0 22.4 -2.7 0.0 0.0 02 23.9 " t t 18.2 -3.2 03 23.9 l 15.7 -5.9 " 04 24.3 " 15.6 -54 05 22.4 -0.5 " 19.6 -2.1 t 06 20.9 -4.3 " 21.3 -1.1 " 07 23.0 0.0 " I 210 0.0 08 23.0 -2.1 tt "20.7 09 25.1 -1.6 1.2 1.8 23.9 " 3.8 2.9 10 27.2 -0.5 4.1 4.4 30.9 1.6 11.9 11.1 11 30.6 -0.5 7.5 7.5 36.9 2.7 21.2 19.4 12 33.4 -1.6 12.2 11.6 46.0 2.7 30.5 27.6 13 35.4 -0.5 11.3 11.1 47.9 5.4 30.5 28.2 14 35.4 0.0 13.2 13.1 47.3 4.3 27 3 25.2 15 33.9 -4.2 11.9 10.7 41.0 2.7 24.5 22.5 16 31.7 -3.2 8.6 7.9 37.2 2.2 19.1 17.7 17 30.9 0.0 5.1 4.9 34.2 1.1 14.3 12.9 18 28.8 2.7 3.0 26.7 0.0 6.8 7.4 19 27.6 ".2.5 20.1 -2.2.5.9 20 26.7 0.0 0,0 17.4 -4.3 0.0 0.0 21 26.7 T" I T" 16.8 -4.3 22 26.7 "T 15.4 -4.3 23 25.5 "it t t 15.5 -5.4 t "1T 24 23.6 -1.6 " rf 14.5 -43 tf" " TOTAL 565 -20.6 78. 7.5 626.2 -22.5 190.4 175.8 February 26, 1956 February 27, 1956 01 15.2 54 0.0 0.0 13.6 -5 0.0 0.0 02 17.1 -4.9 i tf 18.8 -5.4 II" " 03 20.4 -1.6 T It 620.7 -3.3 t 04 22.7 0.0 t 20.8 -1.1 05 22.6 t t 20.6 0.0 I 06 22. *7 t t1 tI 20.7 ti " 07 22.5 1- tt It 20.5 " tI IT 08 22.5 T".2.2 20.9 i.3.3 09 26.2 -0.5 4.9 5.4 27.9 -2.2 7.8 7.8 10 33.0.5 16.1 15.9 34.3 -2.2 24.5 22.8 11 46.3.5 35.1 35.7 47.5 -2.1 35.3 34.4 12 55.9 3.8 40.2 39.2 53.9 5.4 42.9 42.8 13 55.4 3.2 38.4 36.6 63.5 4.3 52.5 50.1 14 68.6 7.0 55.2 52.8 65.3 3.7 52.8 50.3 15 48.5 3.2 30.8 29.6 54.5 0.0 45.2 40.4 16 41.0 2.7 22.4 21.5 51.8 -3.7 42.2 37.9 17 34.3 3.2 14.4 13.9 38.2 -5.3 27.9 30.2 18 27.4 -1.1 8.1 8.6 20.1 -7.0 9.8 12.2 19 18.2 -4.9.5 1.1 14.9 -6.5 1.1 2.4 20 17 9 -3.8 0,0 0.0 13.8 -7.1 0. 0.0 21 16.3 -4.3 1. " t 140 66 t 22 16.2 33 31 15.2.55 23 17e.5 -3.8 " 1 13.9 -5.5 24 15.8 -4.3 t 13.5 -3.8 " " TOTAL 704.2 -13.8 0.5 698. -9 3423 331.6 35

THERMAL RADIATION DATA, KEWEENAW FIELD STATION (Langleys) Time, EST Total Net Total Refl. Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar February 28, 1956 February 29, 1956 01 13.6 -3.3 0.0 0.0 19.7 -3.2 0.0 0.0 02 13.1 -4.9 20.9 -1.1 03 14.1 -3.8 " 22.1 -1.1 04 13.8 -3.3 21.4 -2.2 05 13.4 -3.3 "21.4 -2.2 06 12.9 -3.3 " t 18.1 -4.3 07 13.0 -3.3 " 15.8 -4.9 08 14.4 -3.3 1.1.8 14.8 -3.3 1.2.8 09 20.8 -4.4 15.6 14.3 20.2 -6. 153 13.4 10 33.0 -594. 31.4 27.3 32.4 0-49 30.3 27.2 11 47.3 -33 45.6 38.4 45.6.5 36.2 34.2 12 59.9 -0.5 56.3 47.1 62.2 ~5 48.6 45.3 13 67.9 0.0 6o.o 47.6 64.5 0.0 58.2 52.1 14 64.1 -0.5 55.5 45.2 66.9 0.0 59.1 52.4 15 61.o 0.0 48.0 45.8 62.4 -1.0 54.2 48.5 16 51.0 -2.7 44.4 40.8 52.5 -2.6 43.7 40.7 17 38.0 -5.9 29.9 29.6 46.2 -4.1 29.1 29.6 18 25.3 -8.1 13.2 15.3 27.2 -5.2 12.5 15.6 19 14.3 -7.6 1.3 1.9 17.5 -5.3.8 2.3 20 13.1 -6.6 0.0 0.0 16.0 -5.9 0.0 0.0 21 12.8 -6.6 " 15.6 -5.4 22 13.7 -7.6 " t 18.1 -4.3 " 23 13.7 -7.6 16.8 -4.3 24 -192.2 -2.7 " 18.8 43 I TOTAL 663.4 -98 402.3 354.1 737.1 -746 389.2 362.1 March 1, 956 March 2, 1956 01 22.8 -2.7 00o 0.0 20.5 -4.8 0.0 0.0 02 20.4 -3.2 " 25.8 -1.6 " 03 20.1 -3.7 " 25.1 0.0 04 17.8 -5.4 " 21.3 -4.2 05 18.7 -4.8 t21.5 -3.7 06 18.9 -5.3 " 20.8 -3.7 07 17.9 -5.3 18.2 -4.3 08 18.5 -5.3.6 1.9 19.4 -2.7.5.5 09 25.4 -5.3 8.4 9.8 26.1 0.0 7.4 5.3 10 40.1 -4.3 25.1 24.2 32.7 1.1 12.0 10.7 11 52.1 -2.6 39.8 36.2 39.3 1.1 16.5 15.2 12 60.0 0.0 48.2 42.8 47.2 1.6 22.5 20.4 13 66.1 1.5 51.0 44.1 54.8 2.1 34.9 27.8 14 57.5 0.0 40.9 34.7 56.7 2.6 39.3 31.8 15 49.8 -0.5 38.6 31.8 5 34 6.8 36.9 28.8 16 50.1 -0.5 35.4 29.1 40.5 2.6 22.5 20.6 17 437 -3.1 28.9 26.4 37.5 1.6 10.7 11.9 18 28.1 -6.3 11.3 14.9 30.5.5 6.9 6.9 19 21.1 -6.9 1.3 1.9 25.2 -2.1 1.5 2.6 20 19.9 -6.4 0.0 0.0 17o6 -4.8 0o0 0.0 21 19.4 -59 15.7 -4.9 22 18.5 -3o7 " Z15.9 -5.9 " 23 17.7 -4.3 18.5 -43 24 18.5 -5.4 r" 23.3 0.0 I" TOTAL 743.1 -89 329.5 297.8 707.5 -27.0 211. 182.5 36

THERMAL RADIATION DATA, KEWEIEAW FIELD STATION (Langleys) Time, EST Total Net Total Reflo Total Net Total Refl. Hr. Ending Hemis. Exch. Solar Solar Hemis. Exch. Solar Solar March 3, 1956 March 4, 1956 01 23.5 -0.5.0 0.0 14.7 -5.5 0.0 0. 02 19.7 -2.7 " 15. -9 -3 9 03 22,3 0.0 19.3 -1.6 04 25.4 T" t 17.9 -2.7 " t 05 25.5 t" T f 19.9 -1.1 06 25.5 T" t t 168 -3.3 I T 07 25.5 " T I 20.4 0.0 i 08 25.6.2.3 20.9 -1.1.5 102 09 27.0.5 4.2 4 1 24.6 0.0 3.5 4.2 10 31.5 1.6 10.7 10.4 28.1 0.0 5.9 6.0 11 40.7 3.7 21.6 19.9 35.2 1.6 13.9 13.8 12 50.4 3.7 37.5 33.8 39.9 2.7 18.8 18.6 13 49.2 4.2 35.7 31.4 43.4 1.6 20.9 20.4 14 50.2 2.1 30.0 25.8 42.7 1.6 19.2 18.6 15 49.0 2.6 28.4 25.4 44.8 1,6 24.2 22.8 16 51.2 3.2 33.3 31.2 44.3 1.1 22.9 20.4 17 41.8 2.6 25.9 24.2 36.4 0.0 10.2 10.2 18 266.3 -6.4 10.1 9.2 31.8 0.0 11.7 7.8 19 19.6 -7.4 2.3 2.7 24.7 -1.1.9 1.8 20 15.3 -8.0 0.0 0.0 18.8 -4.3 0.0 0.0 21 19.9 -3.8 " I 17.9 -3,2 22 16.8 -5.4 T tI 17.1 -3.2 23 16.2 -4.9 TI T 117.3 -4.3 I 24 l6.2 -5.4 i" 20.3 2 1.. 1 tTOTAL 714.3-20.3 239.9 2184 633.1 -2.2 152.6 145.8 37