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大气科学  2002 

东亚地区对流层人为硫酸盐辐射强迫及其温度响应

DOI: 10.3878/j.issn.1006-9895.2002.06.04

Keywords: 东亚地区,区域气候模式,辐射强迫,温度响应

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Abstract:

利用区域气候模式对东亚地区人为硫酸盐的直接辐射强迫及其温度响应进行了数值研究.结果表明:(1)人为硫酸盐直接辐射强迫具有明显的季节变化和地理分布特征,辐射强迫的这种变化特征不仅强烈地依赖于硫酸盐柱含量的季节变化和地理分布,而且取决于云量季节变化和地理分布.(2)就年平均而言,由于硫酸盐辐射强迫的影响,模拟区域内大部分地区普遍降温.降温比较明显的区域位于110°E以东、40°N以南的中国大陆地区,超过-0.1℃.其中华北平原和长江中游的湖南、湖北形成两个降温大值中心,幅度超过-0.2℃.(3)地面温度响应呈现出明显的区域季节变化特征.冬春季节,温度响应与辐射强迫之间满足较好的对应关系;夏秋季节,二者呈现出复杂的非线性关系.

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