Regional Oceanic Impact on Circulation and Direct Radiative Effect of Aerosol over East Asia  

作　　者：XIONG Zhe HAN Zhi-Wei 

机构地区：[1]Key Laboratory of Regional Climate-Environment for East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences,Beijing 100029, China

出　　处：《Atmospheric and Oceanic Science Letters》2011年第6期324-329,共6页大气和海洋科学快报（英文版）

基　　金：supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No.KZCX2-YW-Q11-03);the National Basic Research Program of China(Grant Nos.2010CB950900 and 2009CB421100);the National Natural Science Foundation of China(Grant No. 91025003);the R&D Special Fund for Public Welfare Industry (Meteorology)(Grant No.GYHY200906020)

摘　　要：The Regional Integrated Environmental Model System （RIEMS 2.0） coupled with a chemistry-aerosol model and the Princeton Ocean Model （POM） is employed to simulate regional oceanic impact on atmospheric circulation and the direct radiative effect （DRE） of aerosol over East Asia. The aerosols considered in this study include both major anthropogenic aerosols （e.g., sulfate, black carbon, and organic carbon） and natural aerosols （e.g., soil dust and sea salt）. The RIEMS 2.0 is driven by NCEP/NCAR reanalysis II, and the simulated period is from 1 January to 31 December 2006. The results show the following： （1） The simulated annual mean sea-level pressure by RIEMS 2.0 with POM is lower than without POM over the mainland and higher without POM over the ocean. （2） In summer, the subtropical high simulated by RIEMS 2.0 with POM is stronger and extends further westward, and the continental low is stronger than without POM in summer. （3） The aerosol optical depth （AOD） simulated by RIEMS 2.0 with POM is larger in the middle and lower reaches of the Yangtze River than without POM. （4） The direct radiative effect with POM is stronger than that without POM in the middle and lower reaches of the Yangtze River and parts of southern China. Therefore, the authors should take account of the impact of the regional ocean model on studying the direct climate effect ＆aerosols in long term simulation.The Regional Integrated Environmental Model System(RIEMS 2.0) coupled with a chemistry-aerosol model and the Princeton Ocean Model(POM) is employed to simulate regional oceanic impact on atmospheric circulation and the direct radiative effect(DRE) of aerosol over East Asia.The aerosols considered in this study include both major anthropogenic aerosols(e.g.,sulfate,black carbon,and organic carbon) and natural aerosols(e.g.,soil dust and sea salt) .The RIEMS 2.0 is driven by NCEP/NCAR reanalysis II,and the simulated period is from 1 January to 31 December 2006.The results show the following:(1) The simulated annual mean sea-level pressure by RIEMS 2.0 with POM is lower than without POM over the mainland and higher without POM over the ocean.(2) In summer,the subtropical high simulated by RIEMS 2.0 with POM is stronger and extends further westward,and the continental low is stronger than without POM in summer.(3) The aerosol optical depth(AOD) simulated by RIEMS 2.0 with POM is larger in the middle and lower reaches of the Yangtze River than without POM.(4) The direct radiative effect with POM is stronger than that without POM in the middle and lower reaches of the Yangtze River and parts of southern China. Therefore,the authors should take account of the impact of the regional ocean model on studying the direct climate effect of aerosols in long term simulation.

关 键 词：aerosols direct radiative effect circulation regional ocean model the Regional Integrated Environ- mental Model System 2.0 

分 类 号：P426.42[天文地球—大气科学及气象学] X513[环境科学与工程—环境工程]