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Detailed Reference Information |
Duff, J.W., Dothe, H. and Sharma, R.D. (2005). A first-principles model of spectrally resolved 5.3 µm nitric oxide emission from aurorally dosed nighttime high-altitude terrestrial thermosphere. Geophysical Research Letters 32: doi: 10.1029/2005GL023124. issn: 0094-8276. |
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The spectrally resolved nighttime 5.3 ¿m emission from NO observed by the Cryogenic Infrared Radiance Instrumentation for Shuttle (CIRRIS-1A) experiment aboard space shuttle Discovery at 195 km tangent altitude during a strong auroral event is modeled using a first-principles kinetics model. An appropriate SHARC (Strategic High Altitude Radiance Code) Atmospheric Generator (SAG) is dosed with an IBC class III aurora. The spectrally resolved fundamental vibration-rotation band emissions from NO around 5.3 ¿m resulting from impacts of ambient NO with O as well as reactions of N atoms with O2 are calculated under steady state conditions. The calculated results, using a local translational temperature derived from the observed spectrum, are in excellent agreement with the CIRRIS-1A observations, validating our model. The importance of the accurate nascent vibrational and rotational distribution of chemically produced NO as well as the collisonally induced rotation-to-vibration relaxation of rotationally hot NO is pointed out. |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Middle atmosphere, energy deposition, Atmospheric Composition and Structure, Thermosphere, composition and chemistry, Atmospheric Composition and Structure, Thermosphere, energy deposition |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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