HR: 1340h
AN: SA23A-1126    [Abstracts]
TI: Contribution of the Overtone Vibration-Rotation Emissions From Chemiluminescent NO to Storm-time Thermospheric Energy Budget
AU: * Sharma, R D
EM: AFRL.VSB.PA@hanscom.af.mil
AF: Space Vehicles Directorate/AFRL, 29 Randolph Road, Hannscom AFB, MA 01731-3010,
AU: Duff, J W
EM: duff@spectral.com
AF: Spectral Sciences, Inc, 4 Fourth Avenue, Burlington, MA 01803,
AU: Dothe, H
EM: dothe@spectral.com
AF: Spectral Sciences, Inc, 4 Fourth Avenue, Burlington, MA 01803,
AB: Recent work [Mlynczak et al.; 2005, 2007] has pointed out that about 50% of the energy input into the atmosphere during a solar storm is radiated away as 5.3 μm fundamental vibration-rotation band (Δv=-1) emission from NO. The energy radiated away as 15 ƒÝm emission from CO₂, on the other hand, is only about 2.3% of the 5.3 μm NO emission. We calculate the contribution to the energy budget by the overtone emission from chemiluminescent NO. Based on the model of spectrally resolved 5.3 μm emission from NO observed by CIRRIS-1A from an aurorally dosed high-altitude atmosphere [Duff et al., 2005] we show that the energy radiated away by chemiluminescent NO in the first overtone (Δv=-2) near 2.7 μm is about 20% of the 5.3 μm emission, about an order of magnitude larger than that radiated away as 15 μm emission from CO₂. We plan to parameterize this contribution to the energy budget as function of input storm energy and altitude so that it can be included in the atmospheric models.
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0342 Middle atmosphere: energy deposition (3334)
DE: 0355 Thermosphere: composition and chemistry
DE: 0358 Thermosphere: energy deposition (3369)
SC: SPA-Aeronomy [SA]
MN: 2007 Fall Meeting