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GCM Bias of the Western Pacific Summer Monsoon and Its Correction by Two-Way Nesting System

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Title: GCM Bias of the Western Pacific Summer Monsoon and Its Correction by Two-Way Nesting System
Authors: INATSU, Masaru Browse this author
SATAKE, Yuya Browse this author
KIMOTO, Masahide Browse this author
YASUTOMI, Natsuko Browse this author
Issue Date: 2012
Publisher: Meteorological Society of Japan
Journal Title: Journal of the Meteorological Society of Japan
Volume: 90B
Issue: 0
Start Page: 1
End Page: 10
Publisher DOI: 10.2151/jmsj.2012-B01
Abstract: Accurate simulation of summertime convection associated with the Asian monsoon trough over the subtropical western Pacific is important but di‰cult to achieve in many general circulation models (GCMs). This study reports a case in which bias could be reduced by introducing a higher-resolution regional atmospheric model (RAM), two-way nested in an atmospheric GCM over the western Pacific. Additional partial-coupling experiments revealed that GCM bias correction was insensitive to the coupling domain. The two-way nesting e¤ect was similar to one phase of a leading mode of natural variability in the system. This is indicative that the twoway nesting model provides more realistic tropical heating that e¤ectively excites a correct phase of the intrinsic dynamical mode to reduce GCM bias.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 日夏 幸雄

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