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DOI | 10.1002/2016JD026061 |
Shipborne observations of the radiative effect of Southern Ocean clouds | |
Protat, Alain1; Schulz, Eric1; Rikus, Lawrence1; Sun, Zhian1; Xiao, Yi1; Keywood, Melita2 | |
2017 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | This study uses shipborne cloud radar and surface radiation measurements collected over the Southern Ocean to characterize the cloud frequency, cloud fraction, and cloud radiative effects on the ocean surface. These cloud and radiative properties are also used to evaluate a regional forecast model. Low-level clouds, either alone or cooccurring with cloud layers aloft, are present similar to 77% of the time in this data set. These clouds either had a very low or a very high cloud fraction at 12 km horizontal resolution, with about half of the clouds characterized by a cloud fraction higher than 80%. Overall, shortwave surface cooling effect dominates longwave heating, with an estimate net radiative cooling of -22 Wm(-2), resulting from a -71 Wm(-2) shortwave cooling and a +49 Wm(-2) longwave heating. A strong relationship between daily surface cloud radiative effect and daily low-level cloud fraction is found, which, if confirmed with a larger data set, could be exploited in satellite retrievals or model parameterizations for the Southern Ocean. The regional model underestimates the frequency of low-level clouds but largely overestimates the frequency of multilayer situations. The associated radiative errors are large and complex, including reduced surface radiative cooling due to low-level clouds compensated by enhanced surface cooling in multilayer situations. |
英文关键词 | Southern Ocean clouds radiative forcing |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000393877800018 |
WOS关键词 | WEATHER PREDICTION SYSTEM ; SHORTWAVE RADIATION ; OPERATIONAL MODELS ; SURFACE ; RADAR ; PRECIPITATION ; TEMPERATURE ; AUSTRALIA ; FREQUENCY ; 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/32427 |
专题 | 气候变化 |
作者单位 | 1.Australian Bur Meteorol, Melbourne, Vic, Australia; 2.CSIRO, Aspendale, Vic, Australia |
推荐引用方式 GB/T 7714 | Protat, Alain,Schulz, Eric,Rikus, Lawrence,et al. Shipborne observations of the radiative effect of Southern Ocean clouds[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(1). |
APA | Protat, Alain,Schulz, Eric,Rikus, Lawrence,Sun, Zhian,Xiao, Yi,&Keywood, Melita.(2017).Shipborne observations of the radiative effect of Southern Ocean clouds.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(1). |
MLA | Protat, Alain,et al."Shipborne observations of the radiative effect of Southern Ocean clouds".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.1(2017). |
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