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DOI | 10.1175/JCLI-D-18-0753.1 |
Reassessing the Effect of Cloud Type on Earth's Energy Balance in the Age of Active Spaceborne Observations. Part I: Top of Atmosphere and Surface | |
L&1; 39;Ecuyer, Tristan S.2 | |
2019-10-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:19页码:6197-6217 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This study revisits the classical problem of quantifying the radiative effects of unique cloud types in the era of spaceborne active observations. The radiative effects of nine cloud types, distinguished based on their vertical structure defined by CloudSat and CALIPSO observations, are assessed at both the top of the atmosphere and the surface. The contributions from single- and multilayered clouds are explicitly diagnosed. The global, annual mean net cloud radiative effect at the top of the atmosphere is found to be -17.1 +/- 4.2 W m(-2) owing to -44.2 +/- 2 W m(-2) of shortwave cooling and 27.1 +/- 3.7 W m(-2) of longwave heating. Leveraging explicit cloud base and vertical structure information, we further estimate the annual mean net cloud radiative effect at the surface to be -24.8 +/- 8.7 W m(-2) (-51.1 +/- 7.8 W m(-2) in the shortwave and 26.3 +/- 3.8 W m(-2) in the longwave). Multilayered clouds are found to exert the strongest influence on the top-of-atmosphere energy balance. However, a strong asymmetry in net cloud radiative cooling between the hemispheres (8.6 W m(-2)) is dominated by enhanced cooling from stratocumulus over the southern oceans. It is found that there is no corresponding asymmetry at the surface owing to enhanced longwave emission by southern ocean clouds in winter, which offsets a substantial fraction of their impact on solar absorption in summer. Thus the asymmetry in cloud radiative effects is entirely realized as an atmosphere heating imbalance between the hemispheres. |
英文关键词 | Cloud cover Cloud radiative effects Clouds |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000482950800001 |
WOS关键词 | ISCCP DATA SETS ; RADIATION BUDGET ; A-TRAIN ; CLIMATE FEEDBACK ; SYSTEM CERES ; CMIP5 MODELS ; INPUT DATA ; CIRCULATION ; CALIPSO ; PRODUCTS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/187412 |
专题 | 气候变化 |
作者单位 | 1.Univ Wisconsin, Dept Atmospher & Ocean Sci, Madison, WI 53706 USA; 2.Univ Wisconsin, Ctr Space Sci & Engn, 1225 W Dayton St, Madison, WI 53706 USA; 3.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA; 4.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | L&,39;Ecuyer, Tristan S.. Reassessing the Effect of Cloud Type on Earth's Energy Balance in the Age of Active Spaceborne Observations. Part I: Top of Atmosphere and Surface[J]. JOURNAL OF CLIMATE,2019,32(19):6197-6217. |
APA | L&,&39;Ecuyer, Tristan S..(2019).Reassessing the Effect of Cloud Type on Earth's Energy Balance in the Age of Active Spaceborne Observations. Part I: Top of Atmosphere and Surface.JOURNAL OF CLIMATE,32(19),6197-6217. |
MLA | L&,et al."Reassessing the Effect of Cloud Type on Earth's Energy Balance in the Age of Active Spaceborne Observations. Part I: Top of Atmosphere and Surface".JOURNAL OF CLIMATE 32.19(2019):6197-6217. |
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