【摘 要】
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A new global aerosol assimilation system adopting a more complex icosahedral grid configurationis developed.Sensitivity tests for the assimilation system are performed utilizing satellite retrieved ae
【机 构】
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State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,I
【出 处】
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第五届全国大气边界层物理和大气化学学术研讨会
论文部分内容阅读
A new global aerosol assimilation system adopting a more complex icosahedral grid configurationis developed.Sensitivity tests for the assimilation system are performed utilizing satellite retrieved aerosol optical depth(AOD)from the Moderate Resolution Imaging Spectroradiometer(MODIS),and the results over Eastern Asia are analyzed here.The assimilated results are validated through independent AERONET/SKYNET observations.Our results reveal that the ensemble and local patch sizes have little influences on the assimilation performance,whereas the ensemble perturbation method has the largest effect.Assimilation leads to significantly positive effect on the simulated AOD field,improving agreement with all of the 12 AERONET sites over the Eastern Asia based on both the correlation coefficient and the root mean square difference(assimilation efficiency).Meanwhile,better agreement of the ?ngstr?m Exponent(AE)field is achieved for 8 of the 12 sites due to the assimilation of AODonly.
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