Ionospheric Density Enhancements at Low and Middle Latitudes during Superstorms Observed from Multiple Satellites

Monday, 15 December 2014: 3:10 PM
Jiuhou Lei1, Wenbin Wang2, Alan Geoffrey Burns2 and Xinan Yue3, (1)University of Science and Technology of China, Hefei, China, (2)NCAR, Boulder, CO, United States, (3)UCAR, Boulder, CO, United States
The total electron content (TEC) data measured by the Jason, CHAMP, GRACE and SAC-C satellites, the in-situ electron densities from CHAMP and GRACE, and the vertical E×B drifts from the ROCSAT satellite are utilized to examine the ionospheric response to superstorms. The combination of observations from multiple satellites provides a unique global view of positive ionospheric storm effect at low and middle latitudes, especially over Oceans and under sunlit conditions during the main phases of the storms. In this talk, we will focus on the morphology, evolution and driving mechanisms of the storm-time ionosphere and explore the relative contributions of the horizontal and vertical transport effects to the observed positive storm phase at different latitudes.