摘要
The responses of the climate system to increase of atmospheric carbon dioxide(CO_2)are studied by using a new version of the Bureau of Meteorological Research Centre(BMRC)global coupled general circulation model(CGCM).Two simulations are run:one with atmospheric CO_2 concentration held constant at 330 ppm,the other with a tripling of atmospheric CO_2(990 ppm). Results from the 41-year control coupled integration are applied to analyze the mean state, seasonal cycle and interannual variability in the model.Comparisons between the greenhouse experiment and the control experiment then provide estimations of the influence of increased CO_2 on climate changes and climate variability.Especially discussed is the question on whether the climate changes concerned with CO_2 inerease will impact interannual variability in tropical Pacific, such as ENSO.
The responses of the climate system to increase of atmospheric carbon dioxide(CO_2)are studied by using a new version of the Bureau of Meteorological Research Centre(BMRC)global coupled general circulation model(CGCM).Two simulations are run:one with atmospheric CO_2 concentration held constant at 330 ppm,the other with a tripling of atmospheric CO_2(990 ppm). Results from the 41-year control coupled integration are applied to analyze the mean state, seasonal cycle and interannual variability in the model.Comparisons between the greenhouse experiment and the control experiment then provide estimations of the influence of increased CO_2 on climate changes and climate variability.Especially discussed is the question on whether the climate changes concerned with CO_2 inerease will impact interannual variability in tropical Pacific, such as ENSO.
