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Counter-Electrojet Occurrence as Observed From C/NOFS Satellite and Ground-Based Magnetometer Data Over the African and American Sectors

dc.contributor.authorHabarulema, John Bosco
dc.contributor.authorLefebvre, Gabrielle
dc.contributor.authorMoldwin, Mark B.
dc.contributor.authorKatamzi‐joseph, Zama T
dc.contributor.authorYizengaw, Endawoke
dc.date.accessioned2019-09-30T15:30:09Z
dc.date.availableWITHHELD_11_MONTHS
dc.date.available2019-09-30T15:30:09Z
dc.date.issued2019-07
dc.identifier.citationHabarulema, John Bosco; Lefebvre, Gabrielle; Moldwin, Mark B.; Katamzi‐joseph, Zama T ; Yizengaw, Endawoke (2019). "Counter-Electrojet Occurrence as Observed From C/NOFS Satellite and Ground-Based Magnetometer Data Over the African and American Sectors." Space Weather 17(7): 1090-1104.
dc.identifier.issn1542-7390
dc.identifier.issn1542-7390
dc.identifier.urihttps://hdl.handle.net/2027.42/151259
dc.description.abstractAn analysis of the counter-electrojet occurrence (CEJ) during 2008-2014 is presented for the African and American sectors based on local daytime (0700-1700 LT) observations from the Communications and Navigation Outage Forecasting System (C/NOFS) vertical ion plasma drift (equivalent to vertical Eà B at an altitude of about 400 km) and ground-based magnetometers. Using quiet time (Kp- 3) data, differences and/or similarities between the two data sets with reference to local time and seasonal dependence are established. For the first time, it is shown that C/NOFS satellite data are consistent with magnetometer observations in identifying CEJ occurrences during all seasons. However, C/NOFS satellite data show higher CEJ occurrence rate for almost all seasons. With respect to local time, C/NOFS satellite observes more CEJ events than magnetometer observations by average of about 20% and 40% over the American and African sectors, respectively, despite both data sets showing similar trends in CEJ identification. Therefore, when a space weather event occurs, it is important to first establish the original variability nature and/or magnitude of the eastward electric field in equatorial regions before attributing the resulting changes to solar wind-magnetosphere and ionosphere coupling processes since CEJ events can be present even during quiet conditions.Key PointsA statistical trend of CEJ events using C/NOFS satellite vertical ion plasma drift and magnetometer observations has been establishedBoth C/NOFS satellite and magnetometer data show higher CEJ occurrence rate over the African sector than the American sectorC/NOFS satellite data exhibit more CEJ events than magnetometer data by average of 20% (40%) over the American (African) sector
dc.publisherJohn Wiley
dc.titleCounter-Electrojet Occurrence as Observed From C/NOFS Satellite and Ground-Based Magnetometer Data Over the African and American Sectors
dc.typeArticle
dc.rights.robotsIndexNoFollow
dc.subject.hlbsecondlevelElectrical Engineering
dc.subject.hlbtoplevelEngineering
dc.description.peerreviewedPeer Reviewed
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/151259/1/swe20897.pdf
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/151259/2/swe20897_am.pdf
dc.identifier.doi10.1029/2019SW002236
dc.identifier.sourceSpace Weather
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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