HR: 1340h
AN: SA33B-1333    [Abstracts]
TI: Relation between the variations of the solar wind and the noon-time equatorial ionospheric electric fields
AU: * Manoj, C
EM: manoj.c.nair@noaa.gov
AF: CIRES, University of Colorado, David Skaggs Research Center NOAA/NGDC E/GC2 325 Broadway, Boulder, CO 80305, United States
AU: * Manoj, C
EM: manoj.c.nair@noaa.gov
AF: National Geophysical Data center, NOAA, David Skaggs Research Center NOAA/NGDC E/GC2 325 Broadway, Boulder, CO 80305, United States
AU: * Manoj, C
EM: manoj.c.nair@noaa.gov
AF: National Geophysical Research Institute, Uppal Road, Hyderabad, 500007, India
AU: Maus, S
EM: stefan.maus@noaa.gov
AF: CIRES, University of Colorado, David Skaggs Research Center NOAA/NGDC E/GC2 325 Broadway, Boulder, CO 80305, United States
AU: Maus, S
EM: stefan.maus@noaa.gov
AF: National Geophysical Data center, NOAA, David Skaggs Research Center NOAA/NGDC E/GC2 325 Broadway, Boulder, CO 80305, United States
AU: Alken, P
EM: patrick.alken@noaa.gov
AF: CIRES, University of Colorado, David Skaggs Research Center NOAA/NGDC E/GC2 325 Broadway, Boulder, CO 80305, United States
AU: Alken, P
EM: patrick.alken@noaa.gov
AF: National Geophysical Data center, NOAA, David Skaggs Research Center NOAA/NGDC E/GC2 325 Broadway, Boulder, CO 80305, United States
AU: Gentile, L
EM: Louise.Gentile.ctr@hanscom.af.mil
AF: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, MA 01731, United States
AU: Burke, W
EM: william.burke2@hanscom.af.mil
AF: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, MA 01731, United States
AB: We compare the solar wind measurements from ACE satellite with the vertical plasma drift (observed by JULIA radar) and the EEJ magnetic signals (observed at HUA observatory) from the South American equatorial sector. The aim is to understand the effect of solar wind on the variations of the electric field in the noon time equatorial ionosphere. We restrict our study to local noon time conditions, geomagnetically active days and while interplanetary Bz is negative. The estimates of electric field intensities (E_VS) at equatorial plain of the magnetosphere were made from ACE data using a combination of Volland-Stern and Siscoe-Hill models (Burke et al, 2007). The JULIA and magnetometer data were high-pass filtered to remove the regular daily variations. The relation between the data set will be presented as a coherence spectrum. In addition, the use of the ACE measurements to improve the climatological models of EEJ during geomagnetically active days will be explored.
DE: 2134 Interplanetary magnetic fields
DE: 2411 Electric fields (2712)
DE: 2415 Equatorial ionosphere
SC: SPA-Aeronomy [SA]
MN: 2007 Fall Meeting