PERTURBATIONS OF SOLAR FLUX IN THE ANTARCTIC ATMOSPHERE-SNOW SYSTEM DUE TO VOLCANIC ASH AEROSOL AND CLOUD
スポンサーリンク
概要
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To examine the effects of volcanic ash aerosol and cloud cover on the shortwave radiation budget in the Antarctic atmosphere-snow system, solar radiation net flux at the top of the atmosphere (TOA) and the snow surface (SWS) are calculated by using a radiative transfer model based on the doubling-adding method. The calculations show that due to introduction of volcanic ash aerosol into the stratosphere, the net flux at SWS decreases and the net flux at TOA increases compared with the non-aerosol scenario. As a result, the atmosphere-subsystem (ATM) between TOA and SWS is heated due to absorption of solar radiation by the aerosol. On the other hand, cloud cover reduces the net flux at TOA and SWS considerably, and heats ATM at the solar zenith angle (θ_0)<64°and cools it at θ_0>64°
著者
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FUKABORI Masashi
Meteorological Research Institute
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UCHIYAMA Akihiro
Meteorological Research Institute
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Uchiyama A
Meteorological Research Institute
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Uchiyama Akihiro
Meteorological Res. Inst. Tsukuba
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AOKI Teruo
Meteorological Research Institute
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AOKI Tadao
Meteorological Research Institute
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HORI Masahiro
National Space Development Agency of Japan
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Aoki Teruo
Meteorological Res. Inst. Tsukuba
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Fukabori M
Meteorological Res. Inst. Ibaraki Jpn
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