HR: 0800h
AN: SA21C-0365    [Abstracts]
TI: Numerical Modeling of the Dynamics and Composition of a Nighttime Intermediate Layer
AU: * Roddy, P A
EM: roddy@utdallas.edu
AF: University of Texas at Dallas, William B. Hanson Center for Space Sciences, P.O. Box 830688, FO23, Richardson, TX 75080 United States
AU: Earle, G D
EM: earle@utdallas.edu
AF: University of Texas at Dallas, William B. Hanson Center for Space Sciences, P.O. Box 830688, FO23, Richardson, TX 75080 United States
AU: Bishop, R L
EM: Rebecca.L.Bishop@aero.org
AF: The Aerospace Corporation, 2350 El Segundo Blvd., El Segundo, CA 90245 United States
AU: Swenson, C M
EM: charles.swenson@usu.edu
AF: Utah State University, UMC 4120, Logan, UT 84322 United States
AU: Larsen, M F
EM: mlarsen@clemson.edu
AF: Clemson University, 203 Kinard Laboratory, Clemson, SC 29634 United States
AU: Carlson, C G
AF: Utah State University, UMC 4120, Logan, UT 84322 United States
AB: A NASA sounding rocket launched from Wallops Island, VA (37.84 N, 75.48 W) on 1 July 2003 at 2:50 EST made the first in-situ measurement of the relative concentrations of Fe+, Mg+, O2+, and NO+ while making simultaneous measurements electric fields within what we have identified as a nighttime intermediate layer below 140 km altitude. This payload was preceded by two TMA chemical tracer releases at 12:19 and 1:41 EST and followed by another at 3:07 EST. The measured wind, composition, and electric field profiles have been used as inputs into a time-dependent numerical model in order to asses their roles in the dynamics and evolution of the layer.
DE: 2411 Electric fields (2712)
DE: 2419 Ion chemistry and composition (0335)
DE: 2437 Ionospheric dynamics
DE: 2443 Midlatitude ionosphere
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting