A Modeling Study with MATCH on the Aerosol Optical Depth Distribution over China in 2006
MATCH对中国地区2006年气溶胶光学厚度分布特征的模拟研究

The Model of Atmospheric Transport and Chemistry (MATCH) is used in this work to simulate the spatial distribution and seasonal variation of AOD(λ=550nm) over China in 2006,by taking NCEP/NCAR reanalysis data as its meteorological input.The AOD obtained by MATCH is then compared with the MODIS (MODerate resolution Imaging Spectro-radiometer) satellite data and the CSHNET (the Chinese Sun Hazemeter Network) observational data.The comparison of the results in this work with MOD08_M3 indicates that MATCH has the basic ability to simulate the AOD variability over China region.The correlation coefficient between the simulation and the observational data is 0.693 (with α<0.0001).The simulated results in this work show that the AOD over China varies greatly with different regions and seasons.The higher value of AOD occurred in North China,Central China and South China,whereas the lower values of AOD are mainly located in Northwest China,Northeast China and Tibetan Plateau.The AOD over China is mainly generated by sulfate aerosol,secondly by organic aerosol,and the least by black carbon and sea\|salt aerosol.