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Rozanov et al. 2005
Rozanov, E., Callis, L., Schlesinger, M., Yang, F., Andronova, N. and Zubov, V. (2005). Atmospheric response to NOy source due to energetic electron precipitation. Geophysical Research Letters 32: doi: 10.1029/2005GL023041. issn: 0094-8276.

We have introduced additional NOy sources caused by energetic electron precipitation (EEP) during 1987 into a Chemistry-Climate model. Comparison of two model runs with and without EEP reveals increase of reactive nitrogen by about 2 ppbv in the middle stratosphere over the tropical and middle latitudes. In the upper stratosphere over the polar winter regions the simulated NOy enhancement reaches 10 ppbv. Decreases of the ozone mixing ratio in the stratosphere by up to 5% over midlatitudes and up to 30% over southern high-latitudes are calculated. A ~0.5 K cooling in the middle stratosphere over the tropics and up to 2 K over southern high-latitudes is calculated with detectable changes in the surface air temperatures. These results confirm that the magnitude of the atmospheric response to EEP events can potentially exceed the effects from solar UV fluxes. These mechanisms work in phase outside polar latitudes, but can compensate each other within polar latitudes.

BACKGROUND DATA FILES

Abstract

Keywords
Global Change, Global climate models (3337, 4928), Global Change, Solar variability, Atmospheric Processes, Climate change and variability (1616, 1635, 3309, 4215, 4513), Atmospheric Processes, Middle atmosphere dynamics (0341, 0342)
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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