NDLI: Evidence for solar cycle influence on the infrared energy budget and radiative cooling of the thermosphere

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Evidence for solar cycle influence on the infrared energy budget and radiative cooling of the thermosphere

Content Provider	NASA Technical Reports Server (NTRS)
Author	Marshall Sr., B. Thomas Thompson, R. Earl Woods, Tom Martin-Torres, F. Javier Turpin, TImothy Mlynczak, Martin G. Kratz, D. P. Russell, James M. Gordley, Larry L. Williams, Joshua
Copyright Year	2007
Description	We present direct observational evidence for solar cycle influence on the infrared energy budget and radiative cooling of the thermosphere. By analyzing nearly five years of data from the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument, we show that the annual mean infrared power radiated by the nitric oxide (NO) molecule at 5.3 m has decreased by a factor of 2.9. This decrease is correlated (r = 0.96) with the decrease in the annual mean F10.7 solar index. Despite the sharp decrease in radiated power (which is equivalent to a decrease in the vertical integrated radiative cooling rate), the variability of the power as given in the standard deviation of the annual means remains approximately constant. A simple relationship is shown to exist between the infrared power radiated by NO and the F10.7 index, thus providing a fundamental relationship between solar activity and the thermospheric cooling rate for use in thermospheric models. The change in NO radiated power is also consistent with changes in absorbed ultraviolet radiation over the same time period.
File Size	354958
Page Count	17
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20090017773
Archival Resource Key	ark:/13960/t4pk5c425
Language	English
Publisher Date	2007-01-01
Access Restriction	Open
Subject Keyword	Geophysics Radiometers Thermosphere Cooling Atmospheric Models Data Processing Atmospheric Sounding Solar Cycles Energy Budgets Ultraviolet Radiation Atmospheric Temperature Solar Planetary Interactions Nitric Oxide Infrared Radiation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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