Auroral Tomographic Imaging Using MSX from the Far UV to the Near IR

Details Auroral Tomographic Imaging Using MSX from the Far UV to the Near IR Auroral Tomographic Imaging Using MSX from the Far UV to the Near IR

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sa42a01m&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SA42A-01

Physics

0310 Airglow And Aurora, 0340 Middle Atmosphere--Composition And Chemistry, 0342 Middle Atmosphere--Energy Deposition, 0355 Thermosphere--Composition And Chemistry, 0358 Thermosphere--Energy Deposition

Scientific paper

The aurora above the Antarctic has been observed using the Ultraviolet and Visible Imagers and Spectrographic Imagers (UVISI) instrument complement aboard the Midcourse Space Experiment (MSX) satellite. The satellite made observations about a tangent point 90 km above the Earth's surface. The satellite was commanded to execute an observing geometry so that a single tangent point could be observed through a +/-70° zenith angle. At the end of this scan the satellite executed a limb scan from 90 km to 300 km tangent altitude. During this spacecraft maneuver the UVISI instrument complement made spectrographic imager observations from 110 nm to 900 nm at a 2 Hz temporal resolution. In addition, two narrow field-of-view imagers (1° x 1° ) simultaneously observed the same scene with narrow bandpass filters covering 230 - 260 nm and 350 - 440 nm wavebands. Two wide field-of-view imagers (13.05° x 10.28° ) also observed the same scene with narrow bandpass filters covering 145 - 180 nm and 529 - 631 nm wavebands. This imager data was also taken at a 2 Hz temporal resolution. The spectrographic imagers can resolve atmospheric spatial structures smaller than 2 km with an altitude resolution of less than 2 km and the narrow field-of-view imagers can resolve spatial structures as small as 90 meters. We will report on this first attempt to provide a self-consistent picture of the aurora across all of these wavebands using an auroral energy deposition model.

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