Remote Sensing of Neutral Temperatures in Earth’s Thermosphere Using the Lyman-Birge-Hopfield Bands of N2: Comparisons with Satellite Drag Data

Details Remote Sensing of Neutral Temperatures in Earth’s Thermosphere Using the Lyman-Birge-Hopfield Bands of N2: Comparisons with Satellite Drag Data Remote Sensing of Neutral Temperatures in Earth’s Thermosphere Using the Lyman-Birge-Hopfield Bands of N2: Comparisons with Satellite Drag Data

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa31b1430k&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA31B-1430

Physics

[0355] Atmospheric Composition And Structure / Thermosphere: Composition And Chemistry, [0358] Atmospheric Composition And Structure / Thermosphere: Energy Deposition

Scientific paper

Thermospheric temperatures from remote and in situ observations have provided valuable insights into the behavior of Earth’s space environment. Remote sensing techniques, however, have thus far been limited to providing exospheric temperatures from limb observations. And in situ observations, the primary source of exospheric temperature data, cannot provide the coverage desired for comparisons with global models. An alternative temperature sensing technique, which derives neutral temperatures from observations of molecular emissions, is attractive for its potential to provide global coverage of neutral temperatures. This method has previously been shown to produce temperatures consistent with atmospheric models. This presentation describes a more rigorous test of this technique - comparison with coincident satellite drag data, a proven source of thermospheric temperature information. Latitudinal profiles of the temperature are obtained by inversion of the (1-1) Lyman-Birge-Hopfield (LBH) band of N2 using high-resolution spectra obtained from the High resolution Ionospheric and Thermospheric Spectrograph (HITS) instrument aboard the Advanced Research and Global Observation Satellite (ARGOS). These remotely sensed temperatures are compared with temperatures derived from satellite drag data using the Mass Spectrometer and Incoherent Scatter (MSIS) 2000 model. Preliminary results show that the temperatures derived from the LBH spectra agree well with those derived from the satellite drag data. These results indicate that current instrumentation and fitting techniques are capable of remotely sensing thermospheric temperature.

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