16:00 - 17:10
Conference Room
Oral presentations
Global structure of temperature and wind response of the lower and middle atmosphere to solar UV variations: model simulations and data analysis
Alexei Krivolutsky, Alla Dement'eva, Lidiya Cherepanova
Central Aerological Observatory, Dolgoprudny, Russia
The response of global temperature and circulation of atmosphere between boundary and 100 km have been studied by simulation with new version of GCM - ARM (Atmospheric Research Model [1]), developed in the Laboratory for Atmospheric Chemistry and Dynamics of Central Aerological Observatory. Planetary wave structure with zonal wave numbers S=1,2,3 (from observations) and forcing by IGWs (Lindzen, 1981) was determinate at lower boundary of the model. Solar cycle signal in UV solar irradiance variations measured from space (SIM and other instruments) has been introduced in radiative module of the model. Such variations disturb radiative heating due to ozone and molecular oxygen absorptions. The results of simulations showed that global structure of temperature and wind response has wave-like features including tropospheric levels. These results are in rather good agreement with data analysis (NCEP Reanalysis data base was used). So that, presented results support the idea that this mechanism of solar-atmospheric connections is realized via UV variations, atmospheric ozone and in presence of large-scale planetary wave activity in the atmosphere. This work was supported by Russian Science Foundation for Basic Research (grant N 13-05-0105213). [1] A.A. Krivolutsky, L.A. Cherepanova, A.V. Dement’eva, A.I. Repnev, and A.V. Klyuchnikova. Global circulation of the Earth’s atmosphere between 0-135 km calculated with the ARM model. Consideration of the solar activity contribution. Geomagnetism and Aeronomy, vol. 55, N 6, 808-828, 2015.

Reference:
Tu-PM-2-I-01
Session:
Energetics, radiation, and dynamics in the MA
Presenter/s:
Alexei Krivolutsky
Topic:
5) Role of the middle atmosphere for climate
Presentation type:
Oral communication 25 min
Room:
Conference Room
Chair/s:
William Ward
Moderator/s:
Ulrich Achatz
Date:
Tuesday, 20 September 2016
Time:
16:00 - 16:25