Thermospheric heating and cooling times during geomagnetic storms, including extreme events

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dc.contributor.authorZesta, Eftyhia
dc.contributor.authorOliveira, Denny M.
dc.date.accessioned2020-01-28T16:35:54Z
dc.date.available2020-01-28T16:35:54Z
dc.date.issued2019-11-29
dc.description.abstractWe present the first quantitative calculations of thermospheric heating and cooling times for geomagnetic storms of different intensity, including extreme events. We utilize the neutral mass density database of the CHAllenging Mini‐satellite Payload and Gravity Recovery And Climate Experiment missions to produce thermospheric global system response to geomagnetic storms caused by coronal mass ejections via superposed epoch analysis during May 2001 to December 2015. Storm events are grouped in five different categories based on the minimum value of the SYM‐H index. We calculate the time from storm onset for the thermosphere to reach maximum intensification (heating time) and the time from onset for the thermosphere to recover (cooling time). We find that heating and cooling times decrease as storm intensity increases and the effect is more pronounced for the cooling times. For extreme storms, the thermospheric heating time is 9.5 hr, while the cooling time is 22 hr.en_US
dc.description.sponsorshipThe authors were supported for this work by NASA Grant NNH13ZDA001N‐HSR and by the NASA Heliophysics Internal Scientist Funding Model (HISFM18‐0009, HISFM18‐HIF). We thank the GSFC/SPDF OMNI team for solar wind and IMF data availability. We thank Ian Richardson and Hillary Cane for their CME list compilationen_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL085120en_US
dc.format.extent8 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2ohnn-sqiy
dc.identifier.citationZesta, E., & Oliveira, D. M. (2019). Thermospheric heating and cooling times during geomagnetic storms, including extreme events. Geophysical Research Letters, 46, 12,739–12,746.; https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL085120en_US
dc.identifier.urihttps://doi.org/10.1029/2019GL085120
dc.identifier.urihttp://hdl.handle.net/11603/17123
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Goddard Planetary Heliophysics Institute (GPHI)
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rights©2019. American Geophysical Union. All Rights Reserved.
dc.rightsAccess to this item will begin on 2020-05-11
dc.subjectextreme geomagnetic stormsen_US
dc.subjectthermosphere heatingen_US
dc.subjectthermosphere coolingen_US
dc.subjectsuperposed epoch densityen_US
dc.titleThermospheric heating and cooling times during geomagnetic storms, including extreme eventsen_US
dc.typeTexten_US

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