利用MODIS气溶胶产品研究亚洲季风对气溶胶传输及其分布的影响

Research on the Asian Monsoon on the Aerosol Transmission and Distribution by Using MODIS Aerosol Product

利用NASA Terra和Aqua卫星MODIS气溶胶卫星产品,统计了亚洲地区气溶胶光学厚度的空间和季节变化特点,发现东亚与南亚两气溶胶光学厚度高值区年际变化类似,季节变化有所不同。同时结合季风区气候条件,分析亚洲季风对气溶胶分布传输的影响,认为南亚气溶胶光学厚度大值区主要是由于南亚季风和高原地形综合作用形成,东亚地区主要是以当地人类活动产生的气溶胶为主,夏季会受到南亚地区气溶胶输送的影响。光学厚度大值区会随着强季风移动。

Based on the NASA Terra and Aqua satellite MODIS aerosol satellite products,the characteristics of space and seasonal changes of aerosol optical in Asian region were statistically analyzed.The results showed that,two high value area of aerosol optical thickness of East Asia and South Asia had a similar interannual variability,seasonal variation was different.Combining with monsoon zone climatic conditions,the impact of the Asian aerosol on monsoon distribution and transmission was analyzed,this paper thought that the formation of optical thickness large value area of South Asian aerosol as was the combined action of the South Asian monsoon and the plateau terrain,the main aerosol in the local was produced by human activities,and in summer was the impacted of aerosol transmission of South Asia.The large value area of optical thickness would move with strong monsoon.