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| 沿海水位和大尺度气候状态——降尺度技术在日本列岛的应用 |
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崔茂常,Hans von Storch,Eduardo Zorita
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中国科学院海洋研究所
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| 摘要: |
| 沿海水位和大尺度气候状态——降尺度技术在日本列岛的应用 |
| 关键词: 沿海水位、大尺度气候状态、降尺度技术 |
| DOI： |
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| 基金项目:中国科学院海洋研究所调查研究报告第2420号 |
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| COAST SEA LEVEL AND THE LARGE-SCALE CLIMATE STATE: A DOWNSCALING ERCISE FOR THE JAPANESE ISLANDS |
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Cui Maochang1, Hans von Storch2, Eduardo Zorita2
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1.Institute of Oceanology, Academia Sinica;2.Max Planck institute for Meteorology, Hamburg, Germany
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| Abstract: |
| A major problem envisaged in the course of man-made climate change is sealevel rise. The global aspect of the thermal expansion of seawater is reasonably well simulated by present day climate models; the coastal aspects of sea level rise, comprise the regional response to regional atmospheric forcing and to the large-scale oceanic circulation, is not adequately simulated by a global climate model because of insufficient spacial resolution. A method to infer the coastal aspects of sea level change uses a statistical"downscaling"strategy: a linear statistical modeles built upon a multy-year data set of local sea level data and of large-scale oceanic and/or atmopheric data such as sea-surface temperature or sea- level air-pressure.
We apply this idea to the sea level along the Japanese coast. The sea level is related to regional and North Pacific sea-surface temperature and sea-level air pressure. Two relevent processes are identified, One process is the local wind set-up of water due to regional low-frequency wind anomalies; the other is a planetary scale atmosphere-ocean interaction which takes place in the eastern North Pacific. |
| Key words: COAST SEA LEVEL,LARGE-SCALE CLIMATE STATE,DOWNSCALING ERCISE |
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