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      氣候變化研究進展 ?? 2009, Vol. 05 ?? Issue (01): 44-49.

      ? 研究論文 ? 上一篇    下一篇

      硫酸鹽氣溶膠對全球水循環(huán)因子的影響

      吳蓬萍 劉煜   

      1. 中國氣象科學研究院 中國氣象科學研究院
      • 收稿日期:2008-04-17 修回日期:2008-05-21 出版日期:2009-01-22 發(fā)布日期:2009-01-22
      • 通訊作者: 吳蓬萍

      Sulfate Aerosol's Effects on Global Hydrological Cycle

      Wu Peng_Ping Yu Liu   

      1. Chinese Academy of Metorological Sciences
      • Received:2008-04-17 Revised:2008-05-21 Online:2009-01-22 Published:2009-01-22
      • Contact: Wu Peng_Ping

      摘要: 利用衛(wèi)星資料進一步檢驗了CAM3.0模式對云的模擬能力,該模式可以較好地再現(xiàn)全球云的分布和季節(jié)變化的主要特征。在硫循環(huán)過程與輻射和動力過程之間雙向耦合的情況下,探討了硫酸鹽氣溶膠直接氣候效應(yīng)對水循環(huán)過程的影響。模式較好地模擬了硫酸鹽氣溶膠的濃度和分布變化。硫酸鹽氣溶膠對水循環(huán)因子的影響在不同季節(jié)和區(qū)域是不同的,其中,北半球夏季的影響最大,這是因為北半球夏季硫酸鹽濃度最高。緯向平均的云量、降水和水汽的變化形勢大部分相似,存在比較密切的聯(lián)系。

      關(guān)鍵詞: 硫酸鹽氣溶膠, 水循環(huán), 云量, 降水

      Abstract: The Community Atmosphere Model Version 3 (CAM3.0)'s simulation ability was evaluated by comparing its simulation results with the related satellite observation data. It was found that the CAM3.0 is able to satisfactorily reproduce the main characters of cloud distribution and its seasonal variations. The direct climate effect of sulfate aerosols on hydrological cycle was investigated through coupling the sulfate cycle with radiation and dynamic processes. The changes in the mass concentration and distribution of sulfate aerosols were simulated well. Sulfate aerosol's effects on hydrological cycle are different in different seasons and regions: the effect in the Northern Hemisphere is greater than that in the Southern Hemisphere in summer because the sulfate mass concentration is greater in the Northern Hemisphere. The trends of changes in cloud fraction, precipitation, and special humidity are mostly similar, indicating that there are close relationships among them.

      Key words: sulfate aerosol, hydrological cycle, cloud fraction, precipitation, special humidity

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