SA44A-06
Variation of Equatorial F-region Vertical Neutral Wind and Neutral Temperature during Geomagnetic Storms: Brazil FPI Observations
Thursday, 17 December 2015: 17:09
2016 (Moscone West)
Jose Luis De La Garza1, Cheng Sheng2, Yue Deng1, Jonathan J Makela3, Daniel James Fisher4, John W Meriwether5 and Rafael Mesquita5, (1)University of Texas at Arlington, Arlington, TX, United States, (2)University of Texas at Arlington, Phyics, Arlington, TX, United States, (3)University of Illinois, Urbana, IL, United States, (4)University of Illinois at Urbana Champaign, Urbana, IL, United States, (5)Clemson University, Clemson, SC, United States
Abstract:
An accurate description of vertical neutral winds in the thermosphere is essential to understand how the upper atmosphere responds to the geomagnetic storms. However, vertical wind measurements are difficult to obtain and there are still limited data. Recent observation deployments now permit substantial progress on this issue. In this paper, neutral vertical wind data from Brazil FPI observations at around 240 km altitude during 2009 to 2015 are used for the study of the equatorial vertical wind and neutral temperature variation during geomagnetic activity times. First, the observations during several particular storm periods will be analyzed. Secondly, Epoch analysis will be used to bin all the observed events together to investigate the climatological features of vertical wind and temperature during storms. The results will give us an unprecedented view of the nighttime vertical wind and neutral temperature variations at low latitudes, which is critical to specify the dynamics of the upper atmosphere.
