典型行业黑碳气溶胶排放对区域气候的影响模拟

Simulation of impact of black carbon aerosol on regional climate change in typical industries

黑碳气溶胶是大气气溶胶的重要组成成分,其对太阳短波辐射和红外辐射均有强烈的吸收作用,对区域气候有较大影响。利用区域气候模式RegCM3,加入自主编制的黑碳排放清单,模拟研究了2013年工业、交通、民用3个典型行业黑碳气溶胶地表吸收太阳辐射量的变化,分析不同行业黑碳气溶胶排放的气候效应。结果表明:黑碳气溶胶主要分布在华北、中原、长三角、珠三角和成渝地区,其中又以山东省和河北省的排放量最大,呈现明显的季节变化,即冬春季高于夏季;3个典型行业排放量排序表现为民用源>工业源>交通源;黑碳气溶胶使地表吸收太阳辐射量增大,引起的气候效应表现在使华北、中原、长三角等地区气温升高,川渝、珠三角地区气温降低;但引起的降水量变化不大,可能与该模式对降水量的模拟效果较差有关。

Black carbon aerosol is an important component of atmospheric aerosols, which has a strong absorption effect on the solar shortwave radiation and infrared radiation, and has a great impact on the regional climate. Using the Regional Climate Model Version 3 （RegCM3） and combined with self-established black carbon emissions inventory, the variation of solar radiative forcing by black carbon aerosols emitted from industry, transportation, and residential sectors in 2013 was simulated, and the climate effects of black carbon aerosol emissions from different sectors analyzed. It was shown that the black carbon aerosols were mainly distributed in the North China, Central Plains, Yangtze River Delta, Pearl River Delta and Chengdu-Chongqing region, showing obvious seasonal changes, with higher emissions in winter and spring than in summer. Among the regions, Shandong Province and Hebei Province had the biggest emissions. The emissions of the three typical sectors were in the order of residential sources 〉 industrial sources 〉 transportation source. The black carbon aerosol increased the surface absorption of solar radiation and caused climate effect of raising the temperature of the North China, Central Plains and Yangtze River Delta, and decreasing the temperature of Sichuan-Chongqing region and Pearl River Delta. However, the resulted change of rainfall was little, which may be related to poor simulation function of the model.