OCEAN WAVE-DEPENDENT ROUGHNESS IMPACTS ON CLIMATE SYSTEM BY COUPLED ATMOSPHERIC GLOBAL CLIMATE-WAVE MODEL
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- SHIMURA Tomoya
- 京都大学 防災研究所
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- TAKEMI Tetsuya
- 京都大学 防災研究所
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- MORI Nobuhito
- 京都大学 防災研究所
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- MIZUTA Ryo
- 気象庁気象研究所 気候研究部
Bibliographic Information
- Other Title
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- 全球大気気候-波浪結合モデルによる海面粗度を通した波浪の気候への影響評価
- ゼン キュウ タイキ キコウ-ハロウ ケツゴウ モデル ニ ヨル カイメンソド オ トオシタ ハロウ ノ キコウ エ ノ エイキョウ ヒョウカ
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Abstract
Ocean surface waves take important roles at an interface between atmosphere and ocean. The wave-dependent surface roughness was implemented into the Atmospheric Global Climate Model using the spectral wave model, and climate simulations were conducted. Wave steepness- and wave age-dependent roughness were considered. The spatial distributions of roughness climatology correspond to the dominance of swells for the climate simulation with wave steepness-dependent roughness and the stationarity of wind direction for that with wave age-dependent one, respectively. The differences of roughness cause the differences in surface wind climatology by 1m/s compared with uncoupled simulations, large differences especially at the lower-latitude. Furthermore, we indicate that the influences can extend to upper-atmosphere such as the climatology of tropical cyclone track. Implementing ocean waves into a climate model can have a wide impacts on the climate simulations.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 72 (2), I_1507-I_1512, 2016
Japan Society of Civil Engineers
