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- Creator:
- Wozniak, Matthew C., Steiner, Allison L., and Solmon, Fabien
- Description:
- Pollen grains emitted from vegetation can rupture, releasing subpollen particles (SPPs) as fine atmospheric particulates. Previous laboratory research demonstrates potential for SPPs as efficient cloud condensation nuclei (CCN). We develop the first model of atmospheric pollen grain rupture, and implement the mechanism in regional climate model simulations over spring pollen season in the United States with a CCN-dependent moisture scheme. The source of SPPs (surface or in-atmosphere) depends on region and sometimes season, due to the distribution of relative humidity and rain. Simulated concentrations of SPPs are approximately 1-10 or 1-1,000 cm-3, depending on the number of SPPs produced per pollen grain (nspg). Lower nspg (103) produces a negligible effect on precipitation, but high nspg (106) in clean continental CCN background concentrations (100 CCN cm-3) shows SPPs suppress average seasonal precipitation by 32% and shift rates from heavy to light while increasing dry days. This effect is likely smaller for polluted air. pollen_rupture_precipitation_BASE_ensemble_daily.nc - data for BASE ensemble average pollen_rupture_precipitation_SPPHIGH_ensemble_daily.nc - data for SPPHIGH ensemble average pollen_rupture_precipitation_SPPLIT_ensemble_daily.nc - data for SPPLIT ensemble average
- Discipline:
- Science
-
- Creator:
- Ward, Jamie L ., Flanner, Mark G., Bergin, Mike, Dibb, Jack E., Polashenski, Chris M., Soja, Amber J., and Thomas, Jennie L.
- Description:
- Biomass burning produces smoke aerosols that are emitted into the atmosphere. Some smoke constituents, notably black carbon (BC), are highly effective light-absorbing aerosols (LAA). Emitted LAA can be transported to high albedo regions like the Greenland Ice Sheet (GrIS) and affect local snowmelt. In the summer, the effects of LAA in Greenland are uncertain. To explore how LAA affect GrIS snowmelt and surface energy flux in the summer, we conduct idealized global climate model simulations with perturbed aerosol amounts and properties in the GrIS snow and overlying atmosphere. The in-snow and atmospheric aerosol burdens we select range from background values measured on the GrIS to unrealistically high values. This helps us explore the linearity of snowmelt response and to achieve high signal-to-noise ratios. With LAA operating only in the atmosphere, we find no significant change in snowmelt due to the competing effects of surface dimming and tropospheric warming. Regardless of atmospheric LAA presence, in-snow BC-equivalent mixing ratios greater than ~60 ng/g produce statistically significant snowmelt increases over much of the GrIS. We find that net surface energy flux changes correspond well to snowmelt changes for all cases. The dominant component of surface energy flux change is solar energy flux, but sensible and longwave energy fluxes respond to temperature changes. Atmospheric LAA dampen the magnitude of solar radiation absorbed by in-snow LAA when both varieties are simulated. In general, the significant melt and surface energy flux changes we simulate occur with LAA quantities that have never been recorded in Greenland.
- Keyword:
- climate, Greenland Ice Sheet, black carbon, biomass burning, snowmelt, and surface energy balance
- Citation to related publication:
- Ward, J.L., et al. (2018). Modeled Response of Greenland Snowmelt to the Presence of Biomass Burning-Based Absorbing Aerosols in the Atmosphere and Snow. Journal of Geophysical Research: Atmospheres. 123, 6122– 6141. https://doi.org/10.1029/2017JD027878
- Discipline:
- Science
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- Creator:
- Welling, Daniel and Walsh, Brian
- Description:
- The goal of this simulation was to examine the spread of magnetic reconnection across the dayside magnetopause upon the arrival of a tangential discontinuity of the interplanetary magnetic field from a purely northward to southward configuration. Simple solar wind conditions were used to give us input into the system. A very high resolution grid setup was used in BATS-R-US.
- Keyword:
- space science, magnetosphere, magnetohydrodynamics, magnetopause, and magnetic reconnection
- Citation to related publication:
- Walsh, B. M., Welling, D. T.,Zou, Y., & Nishimura, Y. (2018). A maximum spreading speed for magnetopause reconnection. Geophysical Research Letters, 45, 5268–5273. https://doi.org/10.1029/2018GL078230
- Discipline:
- Science
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- Creator:
- Heath, Jeffrey
- Description:
- Bankan Tey is a Dogon language spoken in the village complex Walo (also spelled Oualo) near Douentza in central Mali. It is closely related to Ben Tey within Dogon. As of May 2018, Bankan Tey remains on my “to do” list in terms of grammatical description and texts. These recordings were made in Walo in 2011 and have not yet been transcribed although there is a fair chance I will be able to work on them in the next few years. If nothing materializes before 2022, I authorize other linguists to transcribe, translate, and/or analyse the texts. 2011 side A 2011 side B
- Keyword:
- Bankan Tey , Dogon, Recording, Audio, and Walo
- Citation to related publication:
- Moran, Steven & Forkel, Robert & Heath, Jeffrey (eds.) 2016. Dogon and Bangime Linguistics. Jena: Max Planck Institute for the Science of Human History. http://dogonlanguages.org
- Discipline:
- Humanities
-
- Creator:
- Heath, Jeffrey
- Description:
- Dogul Dom is a Dogon language spoken over a broad area on the Dogon (Bandiagara) plateau, mainly north(-west) of Bandiagara. A grammar was published electronically at Language Description Heritage Library in 2016. https://ldh.clld.org/sources/item_2326691 It is backed up at Deep Blue documents. http://hdl.handle.net/2027.42/123061 Dogul Dom texts were recorded digitally at Nantanga village in 2015. Portions were transcribed and presented in the grammar as Text T01 and Text T02 Dogul Dom Nantanga 2015-01 (about 9:30 minutes), Text T01 in grammar Dogul Dom Nantanga 2015-02 (about 4:30 minutes), Text T02 in grammar
- Keyword:
- Dogul Dom, Dogon, Audio, and Recording
- Citation to related publication:
- Moran, Steven & Forkel, Robert & Heath, Jeffrey (eds.) 2016. Dogon and Bangime Linguistics. Jena: Max Planck Institute for the Science of Human History. http://dogonlanguages.org and Heath, Jeffrey. 2016. A grammar of Dogul Dom (Dogon language family, Mali). Ann Arbor: Univ. of Michigan. Available at https://doi.org/10.17617/2.2326691 and https://ldh.clld.org/sources/item_2326691
- Discipline:
- Humanities
-
- Creator:
- Heath, Jeffrey
- Description:
- Donno So is a Dogon language spoken over a wide area on the Dogon (Bandiagara) plateau, mainly between Bandiagara and the eastern edge of the plateau. It is also called Kamma So. A grammar was published electronically at Language Description Heritage Library in 2016: and https://ldh.clld.org/sources/item_2491630 This is backed up at Deep Blue documents. http://hdl.handle.net/2027.42/123062 Thirteen texts were recorded digitally in Wendekele village south of Bandiagara in approximately 2015. Because of equipment problems the texts are rather faint and difficult to transcribe. Five texts were transcribed and translated, and presented at the end of the grammar volume. The correspondences are these: Published volume: text 1, Recording: DS 02, title: hare and other animals (tale); text 2, DS 09, report on trip to Burkina; text 3, DS 10, blacksmith; text 4, DS 03, squirrel and hare (tale); text 5, DS 11, Fulbe herders. Recordings DS 01(tale of stepmother), 04 (farming), 05 (construction),06 (animals), 07 (hunting), 08 (herding), 12 (marriage), and 13 (korobasinging) are not transcribed as of May 2018. I grant permission to other linguists to transcribe, translate, and/or analyse them.
- Keyword:
- Donno So, Dogon, Audio, and Recording
- Citation to related publication:
- Moran, Steven & Forkel, Robert & Heath, Jeffrey (eds.) 2016. Dogon and Bangime Linguistics. Jena: Max Planck Institute for the Science of Human History. http://dogonlanguages.org and Heath, Jeffrey. 2016. A grammar of Donno So or Kamma So. Ann Arbor: Univ. of Michigan. Available at https://doi.org/10.17617/2.2491630 and https://ldh.clld.org/sources/item_2491630
- Discipline:
- Humanities
-
- Creator:
- Heath, Jeffrey
- Description:
- Jalkunan is a small-population Mande language spoken in Blédougou village cluster in the Banfora plateau in SW Burkina Faso.A grammar was published electronically at Language Description Heritage Library in 2017. http://ldh.clld.org/2017/01/01/escidoc2346932/ This is backed up at Deep Blue documents. http://hdl.handle.net/2027.42/139025 http://dogonlanguages.org/other#mande Seven texts were recorded digitally in 2016 and are archived here. Three of them (texts 1, 2, and 4) were transcribed and translated at the end of the published grammar. The remaining tapes are not transcribed as of May 2018. I give permission to other linguists to transcribe, translate, and/or analyse the remaining texts.
- Keyword:
- Jalkunan, Mande, Audio, and Recording
- Citation to related publication:
- Moran, Steven & Forkel, Robert & Heath, Jeffrey (eds.) 2016. Dogon and Bangime Linguistics. Jena: Max Planck Institute for the Science of Human History. http://dogonlanguages.org
- Discipline:
- Humanities
-
- Creator:
- Heath, Jeffrey
- Description:
- Najamba is spoken chiefly in villages on the edges of low cliffs flanking a long valley near Douentza in central Mali. It belongs to a cluster of languages/dialects including Kindige, spoken mostly along the main Douentza-Sevare highway, and the varieties around Borko on the (very) high plateau on the northwestern edge of the Dogon (Bandiagara) plateau. These varieties are often collectively called Bondu So, but this is an exonym. A grammar of Najamba was published electronically by Language Description Heritage Library in 2017 http://ldh.clld.org/2017/02/01/escidoc2397771/ It is backed up at Deep Blue documents. http://hdl.handle.net/2027.42/139022 One cassette was recorded (on one side only) in Kubewel village in 2004. Two cassettes were recorded in Adia village in 2005 in a single long session. These have been digitized. The inventory is: Kubewel: 2004-01 side A; Adia 2005-01 side A; 2005-01 side B; 2005-02 side A; 2005-02 side B. The 2004 tape had poor sound quality and was not transcribed. A substantial part of 2005-01 side A and 2005-02 side A was transcribed and translated in unpublished keyboarded documents in 2009 (see below). The material from 2005-01 side A was further edited and appeared as a single long text at the end of the published grammar. The unpublished documents included in this work are: transcriptions: Dogon Najamba 2005_01_A Adia text transcribed 2009; Dogon Najamba 2005_02_A Adia text transcribed 2009. translations: Dogon Najamba 2005_01_A Adia text translated 2009; Dogon Najamba 2005_02_A Adia text translated 2009
- Keyword:
- Najamba, Dogon, Douenzta, Mali, Audio, and Recording
- Citation to related publication:
- Moran, Steven & Forkel, Robert & Heath, Jeffrey (eds.) 2016. Dogon and Bangime Linguistics. Jena: Max Planck Institute for the Science of Human History. http://dogonlanguages.org
- Discipline:
- Humanities
-
- Creator:
- Heath, Jeffrey
- Description:
- Tiranige is a Dogon language spoken in villages on the high plateau near the western edge of the Dogon (Bandiagara) plateau, and in villages at the base of the cliffs and slopes leading down from the plateau to the sandy plains. As of May 2018 I am still working on a drafted Tiranige grammar which I hope to complete in 2019. The grammar draft currently ends with six short texts transcribed from dictation. The only audio recording is therefore labeled Text 07. The speakers are Amadou Toloba and Boubacar Toloba. Most but not all of it (17.5 minutes out of about 22) has been partially transcribed. The plan is to complete the grammar and to transcribe and translate at least Text 07.
- Keyword:
- Tiranige, Dogon, Mali, Audio, and Recording
- Citation to related publication:
- Moran, Steven & Forkel, Robert & Heath, Jeffrey (eds.) 2016. Dogon and Bangime Linguistics. Jena: Max Planck Institute for the Science of Human History. http://dogonlanguages.org
- Discipline:
- Humanities
-
- Creator:
- Heath, Jeffrey
- Description:
- Yorno So is the variety of the Toro So subgroup of the Dogon language family. It is spoken in the Yendouma village cluster along the base of cliffs on the eastern side of the Dogon (Bandiagara) plateau in east-central Mali. It is not yet completely clear whether it is best described as a dialect of Toro So (which also includes Sangha So, Ibi So, and other varieties), or as a separate language. As of May 2018 my opinion is that it is a dialect. A grammar of Yorno So was published electronically at Language Description Heritage Library in 2017. http://ldh.clld.org/2017/09/01/escidoc2326768-2/ This is backed up at Deep Blue documents. http://hdl.handle.net/2027.42/139021. An excerpt of this document that includes a transcription and an English translation of audio files texts 1-6 is included in this dataset. Texts 07, 08, and 09 have not yet been transcribed. I give permission to other linguists to transcribe, translate, and/or analyze those texts.
- Keyword:
- Toro So, Yorno So, Dogon, Audio, and Recording
- Citation to related publication:
- Moran, Steven & Forkel, Robert & Heath, Jeffrey (eds.) 2016. Dogon and Bangime Linguistics. Jena: Max Planck Institute for the Science of Human History. http://dogonlanguages.org
- Discipline:
- Humanities