Testing the Fixed Anvil Temperature Hypothesis in a Cloud-Resolving Model
Testing the Fixed Anvil Temperature Hypothesis in a Cloud-Resolving Model
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DOI：
10.1175/jcli4124.1
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发表时间：
2007-05
影响因子：
4.9
通讯作者：
Z. Kuang;D. Hartmann
中科院分区：
文献类型：
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作者：
Z. Kuang;D. Hartmann
利用热带辐射对流平衡的云分辨模拟表明，在海温变化2 K的情况下，砧温变化小于0.5 K，支持固定砧温（FAT）假说。结果表明，对于合理的臭氧分布曲线，控制排放水平的应是空气排放能力的降低，而不是臭氧升温，FAT假设应成立。由于系统中其他因素的变化，如CO2混合比加倍、平流层水汽浓度加倍、布鲁尔-多布森环流引起的动态冷却等，铁砧温度也保持不变。当采用不同的微物理方案时，结果具有鲁棒性。
Using cloud-resolving simulations of tropical radiative–convective equilibrium, it is shown that the anvil temperature changes by less than 0.5 K with a 2-K change in SST, lending support to the fixed anvil temperature (FAT) hypothesis. The results suggest that for plausible ozone profiles, a decrease in the air’s emission capability instead of ozone heating shall remain the control on the detrainment level, and the FAT hypothesis should hold. The anvil temperature also remains unchanged with other changes in the system such as the doubled CO2 mixing ratio, doubled stratospheric water vapor concentration, and dynamical cooling due to the Brewer–Dobson circulations. The results are robust when a different microphysics scheme is used.