Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD029186 |
Geographical and Seasonal Variability of Cloud-Radiative Feedbacks on Precipitation | |
Naegele, A. C.; Randall, D. A. | |
2019-01-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:2页码:684-699 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We have used observations to study the temporal covariability of precipitation and atmospheric radiative cooling (ARC, defined as positive when the atmosphere is radiatively cooled) on seasonal and longer time scales. Clouds act to decrease the globally averaged ARC, but their radiative effect on the ARC varies with latitude. Clouds decrease the ARC in the tropics, mainly by reducing the outgoing longwave radiation, but they increase the ARC in higher latitudes, primarily by increasing the downwelling longwave radiation at the surface. The temporal correlation of the zonally averaged precipitation rate and the zonally averaged ARC is about -0.7 in the tropics and +0.5 in higher latitudes, and it changes sign almost discontinuously toward the poles at approximately 30 degrees N and 30 degrees S. This suggests that changes in the ARC feed back negatively on precipitating tropical systems and positively on precipitating systems at higher latitudes. |
英文关键词 | cloud feedback cloud radiative effects hydrologic cycle precipitation convective aggregation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458845300014 |
WOS关键词 | HYDROLOGICAL CYCLE ; SELF-AGGREGATION ; CLIMATE ; CONVECTION ; MODEL ; CONSTRAINTS ; SURFACE ; SYSTEM ; FLUXES |
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/32630 |
专题 | 气候变化 |
作者单位 | Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Naegele, A. C.,Randall, D. A.. Geographical and Seasonal Variability of Cloud-Radiative Feedbacks on Precipitation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(2):684-699. |
APA | Naegele, A. C.,&Randall, D. A..(2019).Geographical and Seasonal Variability of Cloud-Radiative Feedbacks on Precipitation.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(2),684-699. |
MLA | Naegele, A. C.,et al."Geographical and Seasonal Variability of Cloud-Radiative Feedbacks on Precipitation".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.2(2019):684-699. |
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