| 中国沙尘气溶胶的间接辐射强迫与气候效应 |
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| 引用本文： | 沈凡卉,王体健,庄炳亮,李树. 中国沙尘气溶胶的间接辐射强迫与气候效应[J]. 中国环境科学, 2011, 31(7): 1057-1063 |
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| 作者姓名： | 沈凡卉 王体健 庄炳亮 李树 |
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| 作者单位： | 南京大学大气科学学院,江苏南京,210093 |
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| 基金项目： | 国家“973”项目(2011CB403406,2010CB428503); 国家科技部公益行业(气象)科研专项(GYHY200806001-1) |
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| 摘 要： | 利用在线耦合的区域气候化学模式系统(RegCCMS),对2003~2007年的3,4,5月中国沙尘气溶胶的空间分布,间接辐射强迫和间接气候效应进行模拟.结果表明:沙尘分布主要集中在中国西北的新疆、内蒙、甘肃等地区.5月份最高的中心值浓度达到3500μg/m3,3个月地面浓度依次增大.3,4,5月由沙尘气溶胶造成的第一间接辐射强迫平均值分别为-1.26,-2.0,-2.69W/m2.局部地区达到-7W/m2.考虑到沙尘气溶胶的第一间接气候效应后,使近地面气温下降,降水减少,3,4,5月地面气温变化的平均值为-0.05,-0.07,-0.08K. 3,4,5月降水变化平均值分别为-0.0037,-0.037,-0.1mm/d. 不同的月份和地区,温度和降水的变化存在明显的差异.
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| 关 键 词： | 沙尘气溶胶 辐射强迫 间接效应 区域气候 |
| 收稿时间： | 2010-12-29; |
The first indirect radiative forcing of dust aerosol and its effect on regional climate in China |
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| SHEN Fan-hui,WANG Ti-jian,ZHUANG Bing-liang,LI Shu. The first indirect radiative forcing of dust aerosol and its effect on regional climate in China[J]. China Environmental Science, 2011, 31(7): 1057-1063 |
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| Authors: | SHEN Fan-hui WANG Ti-jian ZHUANG Bing-liang LI Shu |
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| Affiliation: | SHEN Fan-hui,WANG Ti-jian,ZHUANG Bing-liang,LI Shu(School of Atmospheric Sciences,Nanjing University,Nanjing 210093,China) |
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| Abstract: | A regional climate chemistry model system(RegCCMS) was constructed by coupling the regional climate model(RegCM3) with a tropospheric atmosphere chemistry model(TACM).Then it was used to investigate the influence of the spatial distribution of dust aerosol over China in March,April and May during 2003 to 2007,its associated indirect radiative forcing and the climatic effect.The simulated results show that high concentration of dust aerosol was mainly found in Xinjiang,Inner Mongolia,and Gansu Provinces of n... |
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| Keywords: | dust aerosol radiative forcing indirect climate effect regional climate |
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