SA31C-2352
Estimation of IT energy budget during the St. Patrick’s Day storm 2015: observations, modeling and challenges.
Wednesday, 16 December 2015
Poster Hall (Moscone South)
Olga P Verkhoglyadova1, Xing Meng2, Anthony J Mannucci2, Martin G Mlynczak3, Linda A Hunt4 and Bruce Tsurutani1, (1)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (2)Jet Propulsion Laboratory, Pasadena, CA, United States, (3)NASA Langley Research Ctr, Hampton, VA, United States, (4)SSAI, Hampton, VA, United States
Abstract:
We present estimates for the energy budget of the 2015 St. Patrick’s Day storm. Empirical models and coupling functions are used as proxies for energy input due to solar wind-magnetosphere coupling. Fluxes of thermospheric nitric oxide and carbon dioxide cooling emissions are estimated in several latitude ranges. Solar wind data and the Weimer 2005 model for high-latitude electrodynamics are used to drive GITM modeling for the storm. Model estimations for energy partitioning, Joule heating, NO cooling are compared with observations and empirical proxies. We outline challenges in the estimation of the IT energy budget (Joule heating, Poynting flux, particle precipitation) during geomagnetic storms.
