HR: 1340h
AN: SA13A-1079    [Abstracts]
TI: Characterizing the Relationship Between Ionospheric Effects and Forcing due to Hurricanes/Typhoons
AU: * Bishop, R L
EM: Rebecca.L.Bishop@aero.org
AF: The Aerospace Corporation, 2350 E. El Segundo Blvd., El Segundo, CA 90245, United States
AU: Straus, P R
EM: Paul.R.Straus@aero.org
AF: The Aerospace Corporation, 2350 E. El Segundo Blvd., El Segundo, CA 90245, United States
AB: Evidence of coupling between lower atmospheric regions and the ionosphere/thermosphere has steadily increased with the utilization of various instrument suites and sophisticated modeling efforts. In this presentation we utilize satellite-based GPS sensors to determine the extent of ionospheric disturbances in the vicinity of hurricanes/typhoons. Using GPS occultation data from the PicoSat and COSMIC satellites we investigate TEC levels and ionospheric scintillation near tropical storms. We characterize the relationship between any ionospheric effects and a storm's horizontal size, strength, and relative position. After examining over 150 tropical storms between 2001 and 2004, we find that scintillation occurs over 50% of the time within 1000 km of a storm center. The occurrence of scintillation seems to favor the area east and northeast of the storms" center.
DE: 2427 Ionosphere/atmosphere interactions (0335)
DE: 2435 Ionospheric disturbances
DE: 2439 Ionospheric irregularities
DE: 2443 Midlatitude ionosphere
SC: SPA-Aeronomy [SA]
MN: 2007 Fall Meeting