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關(guān)鍵詞: 極端降水, CO₂濃度加倍的影響, 氣候變化

Abstract: Outputs of control experiment and CO₂ increasing experiment from GFDL-CM2.1 coupled model were used to evaluate the effect of CO₂ doubling on the changes in extreme precipitation in China. The results show that CO₂ doubling would cause a prominent increase of annual extreme precipitation amount and precipitation intensity in eastern China, and a prominent increase of annual extreme precipitation frequency except in the south part of North China. Furthermore, CO₂ doubling would bring about severe influence on the distribution of extreme precipitation in spring and summer, leading to the increases of extreme precipitation amount and precipitation intensity, and extreme precipitation frequency in the most parts of eastern China. However, the annual precipitation in the south part of North China and in the mid-lower reaches of the Yangtze River both decreased, due to the decrease of wet days in spring and summer as well as the decreases of light rain and moderate rain.

Key words: extreme precipitation, effect of CO₂ doubling, climate change