The global infrared energy budget of the thermosphere from 1947 to 2016 and implications for solar variability.

Autor: Mlynczak MG; NASA Langley Research Center, Hampton, Virginia, United States., Hunt LA; Science Systems and Applications Incorporated, Hampton, Virginia, United States., Russell JM 3rd; Center for Atmospheric Sciences, Hampton University, Hampton, Virginia, United States., Marshall BT; GATS, Inc., Newport News, Virginia, United States., Mertens CJ; NASA Langley Research Center, Hampton, Virginia, United States., Thompson RE; GATS, Inc., Newport News, Virginia, United States.
Jazyk: angličtina
Zdroj: Geophysical research letters [Geophys Res Lett] 2016 Dec 16; Vol. 43 (23), pp. 11934-11940.
DOI: 10.1002/2016GL070965
Abstrakt: We present an empirical model of the global infrared energy budget of the thermosphere over the past 70 years. The F 10.7 , Ap , and Dst indices are used in linear regression fits to the 14.5 year time series of radiative cooling by carbon dioxide and nitric oxide measured by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on the TIMED satellite. Databases of these indices are used to develop the radiative cooling time series from 1947. No consistent relation between the occurrence of peak sunspot number and peak infrared cooling is found over the past six solar cycles. The total infrared energy radiated by the thermosphere, integrated over a solar cycle, is nearly constant over five complete solar cycles studied. This is a direct consequence of the geoeffective solar energy also being nearly constant over the same intervals. These results provide a new metric for assessing the terrestrial context of the long-term record of solar-related indices.
Databáze: MEDLINE
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