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首页> 外文期刊>Atmospheric and oceanic science letters >Indirect Radiative and Climatic Effects of Sulfate and Organic Carbon Aerosols over East Asia Investigated by RIEMS
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Indirect Radiative and Climatic Effects of Sulfate and Organic Carbon Aerosols over East Asia Investigated by RIEMS

机译：RIEMS研究了硫酸盐和有机碳气溶胶对东亚的间接辐射和气候影响

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The indirect radiative and climatic effects of sulfate and organic carbon aerosols over East Asia were investigated using a Regional Integrated Environment Model System (RIEMS) with an empirical aerosol-cloud parameterization. The first indirect radiative forcing was negative and ranged from ?9 ?0 W m~(–2) in the domain. The maximum cooling, up to ?9 W m~(–2), occurred in the Chongqing District in winter, whereas the cooling areas were larger during summer than in winter. Organic carbon (OC) aerosols were more abundant in winter than in ummer, whereas the sulfate concentration during summer was much higher than during winter. The concentrations of sulfate and OC were comparable in winter, and sulfate played a dominant role in determining indirect radiative forcing in summer, whereas in winter, both sulfate and OC were important. The regional mean indirect radiative forcings were ?0.73 W m~(–2) and ?0.41 W m~(–2) in summer and winter, respectively. The surface cooling caused by indirect effects was more obvious in winter than that in summer. The ground temperature decreased by ～1.2 K in most areas of eastern China in winter, whereas in summer, the temperature decreased (～?1.5 K) in some regions, such as the Yangtze River region, but increased (～0.9 K) in the areas between the Yellow and Yangtze Rivers. In winter, the precipitation decreased by 0–6 mm in most areas of eastern China, but in summer, alternating bands of increasing (up to 80 mm) and decreasing (～?80 mm) precipitation appeared in eastern China.
机译：使用具有经验气溶胶-云参数化的区域综合环境模型系统（RIEMS），研究了东亚地区硫酸盐和有机碳气溶胶的间接辐射和气候效应。第一个间接辐射强迫为负，在域中的范围为？9？0 W m〜（–2）。冬季，重庆地区的最大降温量高达？9 W m〜（–2），而夏季的降温面积大于冬季。冬季有机碳（OC）气溶胶比夏季多，而夏季的硫酸盐浓度比冬季高得多。在冬季，硫酸盐和OC的浓度相当，在夏季，硫酸盐在确定间接辐射强迫中起主要作用，而在冬季，硫酸盐和OC均很重要。夏季和冬季的区域平均间接辐射强迫分别为？0.73 W m〜（–2）和？0.41 W m〜（–2）。间接作用引起的表面降温在冬天比夏天更明显。冬季，华东大部分地区的地温在冬季下降了约1.2 K，而在夏季，长江等地区的温度下降了（？1.5 K），而在东部地区则上升了（〜0.9 K）。黄河与长江之间的地区。冬季，华东大部分地区的降水量减少了0-6毫米，而夏季，华东地区出现了增加（最多80毫米）和减少（〜80毫米）的交替带。

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