黑碳和有机碳气溶胶对大气温度影响的数值模拟

摘要/Abstract

摘要：

黑碳气溶胶和有机碳气溶胶是大气气溶胶的重要组成成分,对区域和全球气候有重大影响。利用区域气候模式RegCM3模拟了2000年7月中国黑碳气溶胶和有机碳气溶胶的辐射强迫,分析了这两种气溶胶对大气温度的影响。结果发现,黑碳气溶胶在模式顶层产生正的辐射强迫,而有机碳气溶胶在模式顶层产生的辐射强迫并非全为正值,在地表两种气溶胶都产生负的辐射强迫。黑碳气溶胶和有机碳气溶胶的辐射强迫引起的温度反馈表现在:7月这两种气溶胶的加入使得28°—30° N之间的地区的气温显著升高,35°—36.2° N区域气温降低。黑碳气溶胶的升温效应强于有机碳气溶胶。

关键词: 气溶胶, 辐射强迫, RegCM3模式

Abstract: The research of black carbon (BC) and organic carbon (OC) aerosols become a focus point because they are the main components of atmospheric aerosols, and they also play an important role in the change of regional and global climate. The Regional Climate Model(version 3) (RegCM3) is used to simulated the radiative forcing effect of BC and OC aerosols on air temperature change in China, then the influences of BC and OC aerosols on air temperature are analyzed. The simulation result shows that BC aerosol produces positive radiative forcing effects at the atmosphere top, but the radiative forcing effects at the atmosphere top produced by OC aerosol are not positive values utterly, while the forcing effects are negative at the land surface in the research region for both aerosols. BC and OC aerosols cause distinct increase in air temperature between 28°—30° N in China, and decrease in the area of 35°—36.2° N in China. The calefactive effect of BC is stronger than OC.

Key words: aerosol, radiative forcing, RegCM3 model

中图分类号:

P457.3

吕萍;董治宝;张克存. 黑碳和有机碳气溶胶对大气温度影响的数值模拟[J]. 中国沙漠, 2011, 31(2): 500-504.

LU Ping;DONG Zhi-bao;ZHANG Ke-cun. Numerical Simulation of Effect of Black Carbon and Organic Carbon Aerosols on Atmospheric Temperature in China[J]. JOURNAL OF DESERT RESEARCH, 2011, 31(2): 500-504.

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