Energy Balance in the Thermosphere from TIMED and SORCE data

Details Energy Balance in the Thermosphere from TIMED and SORCE data Energy Balance in the Thermosphere from TIMED and SORCE data

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsa33c..03m&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SA33C-03

Statistics

Computation

0355 Thermosphere: Composition And Chemistry, 0358 Thermosphere: Energy Deposition (3369), 1650 Solar Variability (7537)

Scientific paper

Using a combination of data from the TIMED and SORCE satellites we have examined the macroscopic radiative energy balance of the atmosphere above 100 km. Time series of absorbed solar radiation from 0 to 120 nm and 120 to 175 nm have been developed. In addition, we compute the rates at which infrared energy is radiated by the atmosphere at 5.3 microns (by nitric oxide), 15 microns (by carbon dioxide), and 63 microns (atomic oxygen) using both measured emission rates and model computations. The effects of the declining phase of the current solar cycle are evident in the time series of both the absorbed solar radiation and the infrared emission at all wavelengths. In addition, spectral analyses yields several interesting periodic effects present in the infrared time series. Most notable is the occurrence of a statistically significant 9-day periodicity in the infrared data that is absent in the solar ultraviolet data, but is present in the time series of the Ap and Kp indexes. These results imply a coupling of the geomagnetic environment to the infrared energy budget of the thermosphere. We will also examine the energy balance above 100 km with these data.

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