Effect of global warming on the length‐of‐day
Effect of global warming on the length‐of‐day
复制标题
全球变暖对白昼长度的影响
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
M. Crucifix
中科院分区：
文献类型：
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作者：
O. de Viron;V. Dehant;H. Goosse;M. Crucifix
地球大气中温室气体浓度的人为增加可能会导致大气和海洋中全球环流的重大变化。由于地球-大气-海洋系统的角动量守恒，可以预期日长（LOD）的变化。通过使用参与耦合模式相互比较项目（CMIP-2）的模式的输出，我们得出以下结论：（1）模式在全球范围内同意LOD增加1 μs/年，（2）这种影响主要与平均纬向风的增加有关，其中约三分之一由质量再分配的变化补偿。
The anthropogenic increase in greenhouse gas concentrations in the Earth atmosphere will probably induce important modifications of the global circulation in the atmosphere and ocean. Due to the angular momentum conservation of the Earth‐atmosphere‐ocean system, variation of the length‐of‐day (LOD) can be expected. By using the outputs of the models participating to the Coupled Model Intercomparison Project (CMIP‐2), we reach the following conclusions: (1) the models globally agree to an increase of the LOD of the order of 1 μs/year, (2) the effect is mostly associated with an increase of the mean zonal wind, of which about one third is compensated by a change in mass repartition.