A Simulation of the Separate Climate Effects of Middle-Atmospheric and Tropospheric CO2 Doubling
A Simulation of the Separate Climate Effects of Middle-Atmospheric and Tropospheric CO2 Doubling
复制标题
中层大气和对流层二氧化碳倍增的单独气候影响的模拟
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
H. Kelder
中科院分区：
文献类型：
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作者：
M. Sigmond;P. Siegmund;E. Manzini;H. Kelder
利用ECHAM大气中气候模式对大气中CO2倍增和对流层CO2倍增的气候效应进行了模拟和分析。为此，在中层大气、对流层和整个大气中，二氧化碳浓度分别增加了一倍，并将结果与对照运行进行了比较。在北半球冬季，均匀加倍的CO2气候表现为平流层剩余环流增加，北极平流层下层小幅变暖，北极中层纬向风减弱，北半球中纬度对流层西风带增加，北半球对流层西风带向极地移动。大多数地区均匀加倍的CO2响应近似等于对流层和中层CO2加倍的单独响应之和。平流层剩余环流的增加约有三分之二归因于对流层CO2加倍，三分之一归因于…
Abstract The separate climate effects of middle-atmospheric and tropospheric CO2 doubling have been simulated and analyzed with the ECHAM middle-atmosphere climate model. To this end, the CO2 concentration has been separately doubled in the middle-atmosphere, the troposphere, and the entire atmosphere, and the results have been compared to a control run. During NH winter, the simulated uniformly doubled CO2 climate shows an increase of the stratospheric residual circulation, a small warming in the Arctic lower stratosphere, a weakening of the zonal winds in the Arctic middle-atmosphere, an increase of the NH midlatitude tropospheric westerlies, and a poleward shift of the SH tropospheric westerlies. The uniformly doubled CO2 response in most regions is approximately equal to the sum of the separate responses to tropospheric and middle-atmospheric CO2 doubling. The increase of the stratospheric residual circulation can be attributed for about two-thirds to the tropospheric CO2 doubling and one-third to the...