Spatial Patterns of Tropospheric Biennial Oscillation and Its Numerical Simulation
作者单位：Guangzhou Institute of Tropical and Marine Meteorology/Key Open Laboratory for Tropical Monsoon!Guangzhou China Frontier Research Center for Global ChangeJAMSTECYokohamaJapan
会议名称：《中国气象学会2007年年会》
会议日期：2007年
学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学]
关 键 词：Tropospheric biennial oscillation air-sea interaction spatial pattern
摘 要：In order to investigate the spatial patterns of Tropospheric Biennial Oscillation（TBO） in the global region,the Climate Prediction Center（CPC） Merged Analysis of Precipitation（CMAP） monthly averaged precipitation and the Climate Diagnostics Center（CDC） monthly outgoing long-wave radiation（OLR） and sea surface temperature（SST） are used by TBO *** results indicate active biennial variability in the tropical eastern-central Pacific *** is evident that observations reflect the biennial component of the ENSO rather than the TBO *** some studies had pointed out that the TBO is a broad-scale phenomenon differing from the ENSO,to investigate the pure TBO must exclude the ENSO *** SINTEX-F coupled general circulation model（CGCM） developed at Japan Frontier Research Center for Global Change can capture both the ENSO and the biennial *** air-sea interactions in the tropical eastern-central Pacific are decoupled to eliminate the effects of the ENSO in a experiment by the SINTEX-F and the results show that biennial variability still exists even without the *** seems to mean that the TBO and ENSO are independent from each ***,the model results indicate the two key regions in the southwest to Sumatra and tropical western pacific for the TBO cycle.