Responses of Planetary Waves to Global Warming: Implications from CMIP3 4×CO_2 Experiments  

作　　者：WEN Xin-Yu JIA Zhe TAN Ben-Kui 

机构地区：[1]Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University [2]Laboratory for Climate and Ocean-Atmosphere Studies, Peking University

出　　处：《Atmospheric and Oceanic Science Letters》2013年第2期109-116,共8页大气和海洋科学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 41130962 and 41005035);the National Basic Research Project Program of China (973 Program, Grant No.2010CB428606)

摘　　要：The planetary wave response to global warm ing with single forcing of greenhouse gases （GHGs） is investigated in this study by using a total of 11 model results that anticipated CMIP3 4XCO2 experiments. It is shown that the amplitudes of the planetary wave fluxes over Siberia, the Eastern North Pacific, and the North Atlantic decrease by approximately -10% to -30% in the warming context. In particular, the vertical wave flux over the Eastern North Pacific significantly decreases by -28.6%. The weakening of the planetary waves is partly associated with the decreased land-sea thermal contrast, which may be caused by the radiation effect of CO2 and the different surface heat capacities of land and sea. The present work provides a clear understanding of the re sponses of planetary waves to GHGs forcing.The planetary wave response to global warming with single forcing of greenhouse gases (GHGs) is investigated in this study by using a total of 11 model results that anticipated CMIP3 4×CO2 experiments. It is shown that the amplitudes of the planetary wave fluxes over Siberia, the Eastern North Pacific, and the North Atlantic decrease by approximately -10% to -30% in the warming context. In particular, the vertical wave flux over the Eastern North Pacific significantly decreases by -28.6%. The weakening of the planetary waves is partly associated with the decreased land-sea thermal contrast, which may be caused by the radiation effect of CO2 and the different surface heat capacities of land and sea. The present work provides a clear understanding of the responses of planetary waves to GHGs forcing.

关 键 词：planetary wave stationary-wave globalwarming 4~CO2 experiments 

分 类 号：P467[天文地球—大气科学及气象学]