Climatology of a nonhydrostatic global model with explicit cloud processes

  • S. Iga
    Frontier Research Center for Global Change Japan Agency for Marine‐Earth Science and Technology Yokohama Japan
  • H. Tomita
    Frontier Research Center for Global Change Japan Agency for Marine‐Earth Science and Technology Yokohama Japan
  • Y. Tsushima
    Frontier Research Center for Global Change Japan Agency for Marine‐Earth Science and Technology Yokohama Japan
  • M. Satoh
    Frontier Research Center for Global Change Japan Agency for Marine‐Earth Science and Technology Yokohama Japan

書誌事項

公開日
2007-11
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2007gl031048
公開者
American Geophysical Union (AGU)

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説明

<jats:p>This is the first study to obtain a statistical climate state under a perpetual July condition using a nonhydrostatic global model with explicit cloud processes. Horizontal grid intervals of approximately 7 and 14 km over the globe marginally allowed for a general representation of meso‐scale circulations associated with deep clouds. The fine‐scale precipitation distribution was similar to satellite observations, particularly in regions of the Intertropical Convergence Zone. Realistic distributions of cloud cover in upper, middle, and lower levels were also obtained, although the geographic locations of lower clouds differed slightly from observations over the eastern Pacific. Sensitivity experiments revealed a decrease in outgoing longwave radiation (OLR) as ice fall speed increased or as mixing in the boundary layer was enhanced. As the horizontal resolution increased, the cloud fraction increased and both the OLR and the total water path decreased, implying that cloud overlap also decreased as the resolution increased.</jats:p>

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