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Solar-Terrestrial Coupling Evidenced by Periodic Behavior in Geomagnetic Indexes and the Infrared Energy Budget of the ThermosphereWe examine time series of the daily global power (W) radiated by carbon dioxide (at 15 microns) and by nitric oxide (at 5.3 microns) from the Earth s thermosphere between 100 km and 200 km altitude. Also examined is a time series of the daily absorbed solar ultraviolet power in the same altitude region in the wavelength span 0 to 175 nm. The infrared data are derived from the SABER instrument and the solar data are derived from the SEE instrument, both on the NASA TIMED satellite. The time series cover nearly 5 years from 2002 through 2006. The infrared and solar time series exhibit a decrease in radiated and absorbed power consistent with the declining phase of the current 11-year solar cycle. The infrared time series also exhibits high frequency variations that are not evident in the solar power time series. Spectral analysis shows a statistically significant 9-day periodicity in the infrared data but not in the solar data. A very strong 9-day periodicity is also found to exist in the time series of daily A(sub p) and K(sub p) geomagnetic indexes. These 9-day periodicities are linked to the recurrence of coronal holes on the Sun. These results demonstrate a direct coupling between the upper atmosphere of the Sun and the infrared energy budget of the thermosphere.
Document ID
20080021262
Document Type
Preprint (Draft being sent to journal)
Authors
Mlynczak, Martin G. (NASA Langley Research Center Hampton, VA, United States)
Martin-Torres, F. Javier (Analytical Services and Materials, Inc. Hampton, VA, United States)
Mertens, Christopher J. (NASA Langley Research Center Hampton, VA, United States)
Marshall, B. Thomas (G and A Technical Software, Inc. Newport News, VA, United States)
Thompson, R. Earl (G and A Technical Software, Inc. Newport News, VA, United States)
Kozyra, Janet U. (Michigan Univ. Ann Arbor, MI, United States)
Remsberg, Ellis E. (NASA Langley Research Center Hampton, VA, United States)
Gordley, Larry L. (G and A Technical Software, Inc. Newport News, VA, United States)
Russell, James M. (Hampton Univ. VA, United States)
Woods, Thomas (Colorado Univ. Boulder, CO, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2008
Subject Category
Solar Physics
Funding Number(s)
WBS: WBS 370544.04.12
Distribution Limits
Public
Copyright
Public Use Permitted.

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