HR: 0800h
AN: SA51B-0259    [Abstracts]
TI: Geomagnetic Heating Modifications to Neutral Atmospheric Density Models
AU: * Gjertsen, M D
EM: C05Matthew.Gjertsen@usafa.af.mil
AF: United States Air Force Academy, 2354 Fairchild Drive, Suite 2A31, US Air Force Academy, CO 80840 United States
AU: McHarg, M G
EM: matthew.mcharg@usafa.af.mil
AF: United States Air Force Academy, 2354 Fairchild Drive, Suite 2A31, US Air Force Academy, CO 80840 United States
AU: Chun, F K
EM: francis.chun@usafa.af.mil
AF: United States Air Force Academy, 2354 Fairchild Drive, Suite 2A31, US Air Force Academy, CO 80840 United States
AU: Knipp, D J
EM: delores.knipp@usafa.af.mil
AF: United States Air Force Academy, 2354 Fairchild Drive, Suite 2A31, US Air Force Academy, CO 80840 United States
AU: Bowman, B R
EM: Bruce.Bowman@peterson.af.mil
AF: HQ AFSPC/XPY, Space Analysis Division, Academy Park Loop, Suite 212, Colorado Springs, CO 80910 United States
AB: We present modifications of the geomagnetic input to the Jacchia 1970 neutral atmospheric density model based on neutral density estimates for 18 satellites. Our research uses a Joule heating proxy for geomagnetic heating, instead of Ap which was the sole input used in the original Jacchia 1970 model. We compute the difference between the original Jacchia 1970 model, and our modified model, for 18 satellites in a variety of low earth orbits. The results of this research will allow better operational forecasting of atmospheric neutral drag. To this end we compare the "forecast" of atmospheric neutral density over a one year interval during 2001-2002, the peak of the most current solar cycle.
DE: 7837 Neutral particles
DE: 2427 Ionosphere/atmosphere interactions (0335)
DE: 2447 Modeling and forecasting
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting