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Proceedings Paper

Effect of aerosols on cloud field with satellite-derived and GCM simulation
Author(s): Kentaroh Suzuki; Teruyuki Nakajima; Atusi Numaguti; Toshihiko Takemura; Kazuaki Kawamoto; Akiko Higurashi
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Paper Abstract

Numerical experiment was performed using a general circulation model (GCM) including aerosol indirect effect into water cloud and the simulated global distribution of cloud droplet radii was compared with the global distribution of cloud effective radii retrieved from Advanced Very High Resolution Radiometer (AVHRR). Comparisons of GCM calculation with AVHRR retrieval showed that our GCM generally can simulate the global characteristics of cloud droplet radii such as a land-sea contrast associated with difference of aerosol abundance and coastal region features due to aerosol injection from adjacent continental area. AVHRR retrieval and GCM simulation, however, are turned out to show disagreement over tropical region. AVHRR retrieval may tend to overestimate droplet radii due to the contamination of signal by drizzles and ice particles, whereas our GCM does not treat aerosol indirect effect in deep convective clouds predominant over tropics. Over equatorial central Pacific, where satellite retrieval may suffer from statistical biases, satellite retrieval and GCM simulation are also found to be different.

Paper Details

Date Published: 21 February 2001
PDF: 8 pages
Proc. SPIE 4150, Optical Remote Sensing of the Atmosphere and Clouds II, (21 February 2001); doi: 10.1117/12.416976
Show Author Affiliations
Kentaroh Suzuki, Univ. of Tokyo (Japan)
Teruyuki Nakajima, Univ. of Tokyo (Japan)
Atusi Numaguti, Hokkaido Univ. (Japan)
Toshihiko Takemura, Univ. of Tokyo (Japan)
Kazuaki Kawamoto, NASA Langley Research Ctr. (United States)
Akiko Higurashi, National Institute for Environmental Studies (Japan)

Published in SPIE Proceedings Vol. 4150:
Optical Remote Sensing of the Atmosphere and Clouds II
Yasuhiro Sasano; Jinxue Wang; Tadahiro Hayasaka, Editor(s)

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