GSTDTAP  > 气候变化
DOI10.1002/2016JD025951
The role of cloud phase in Earth's radiation budget
Matus, Alexander V.; 39;Ecuyer, Tristan S.
2017-03-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2017
卷号122期号:5
文章类型Article
语种英语
国家USA
英文摘要

The radiative impact of clouds strongly depends on their partitioning between liquid and ice phases. Until recently, however, it has been challenging to unambiguously discriminate cloud phase in a number of important global regimes. CloudSat and CALIPSO supply vertically resolved measurements necessary to identify clouds composed of both liquid and ice that are not easily detected using conventional passive sensors. The capability of these active sensors to discriminate cloud phase has been incorporated into the fifth generation of CloudSat's 2B-FLXHR-LIDAR algorithm. Comparisons with Clouds and the Earth's Radiant Energy System fluxes at the top of atmosphere reveal that an improved representation of cloud phase leads to better agreement compared to earlier versions of the algorithm. The RMS differences in annual mean outgoing longwave (LW) radiation gridded at 2.5 degrees resolution are 4.9 W m(-2), while RMS differences in outgoing shortwave (SW) are slightly larger at 8.9 W m(-2) due to the larger diurnal range of solar insolation. This study documents the relative contributions of clouds composed of only liquid, only ice, and a combination of both phases to global and regional radiation budgets. It is found that mixed-phase clouds exert a global net cloud radiative effect of -3.4W m(-2), with contributions of -8.1W m(-2) and 4.7W m(-2) from SW and LW radiation, respectively. When compared with the effects of warm liquid clouds (-11.8W m(-2)), ice clouds (3.5 W m(-2)), and multilayered clouds consisting of distinct liquid and ice layers (-4.6W m(-2)), these results reinforce the notion that accurate representation of mixed-phase clouds is essential for quantifying cloud feedbacks in future climate scenarios.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000398064200003
WOS关键词CLIMATE ; ICE ; WATER ; TOP ; SATELLITE ; MODEL ; LIDAR ; PARAMETERIZATION ; FEEDBACK ; SURFACE
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
被引频次:224[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/34389
专题气候变化
作者单位Univ Wisconsin, Dept Atmospher & Ocean Sci, Madison, WI 53706 USA
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GB/T 7714
Matus, Alexander V.,39;Ecuyer, Tristan S.. The role of cloud phase in Earth's radiation budget[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(5).
APA Matus, Alexander V.,&39;Ecuyer, Tristan S..(2017).The role of cloud phase in Earth's radiation budget.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(5).
MLA Matus, Alexander V.,et al."The role of cloud phase in Earth's radiation budget".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.5(2017).
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