Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094676 |
Climatology of cloud-top radiative cooling in marine shallow clouds | |
Youtong Zheng; Yannian Zhu; Daniel Rosenfeld; Zhanqing Li | |
2021-09-27 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | A one-year’s worth of near-global marine shallow single-layer cloud-top radiative cooling (CTRC) is derived from a radiative transfer model with inputs from the satellite cloud retrievals and reanalysis sounding. The mean cloud-top radiative flux divergence is 61 Wm-2, decomposed into the longwave and shortwave components of 73 and -11 W m-2, respectively. Equatorward of 30 º N/S, the CTRC is largely a reflection of free-atmospheric specific humidity distribution: a dry atmosphere enhances CTRC by reducing downward thermal radiation. Consequently, the cooling minimizes in the “wet” tropics and maximizes in the “dry” eastern subtropics. Poleward of 30 º N/S, the CTRC decreases slightly due to the colder clouds that emit less effectively. The CTRC exhibits distinctive seasonal cycles with stronger cooling in the winter and has amplitudes of order 10∼20 Wm-2 in stratocumulus-rich regions. The datasets were used to train a machine-learning model that substantially speeds up the retrieval. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/338900 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Youtong Zheng,Yannian Zhu,Daniel Rosenfeld,et al. Climatology of cloud-top radiative cooling in marine shallow clouds[J]. Geophysical Research Letters,2021. |
APA | Youtong Zheng,Yannian Zhu,Daniel Rosenfeld,&Zhanqing Li.(2021).Climatology of cloud-top radiative cooling in marine shallow clouds.Geophysical Research Letters. |
MLA | Youtong Zheng,et al."Climatology of cloud-top radiative cooling in marine shallow clouds".Geophysical Research Letters (2021). |
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