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DOI | 10.1175/JCLI-D-18-0114.1 |
Drivers of the Low-Cloud Response to Poleward Jet Shifts in the North Pacific in Observations and Models | |
Zelinka, Mark D.1; Grise, Kevin M.2; Klein, Stephen A.1; Zhou, Chen1,5; DeAngelis, Anthony M.3,6,7; Christensen, Matthew W.4 | |
2018-10-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:19页码:7925-7947 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England; Peoples R China |
英文摘要 | The long-standing expectation that poleward shifts of the midlatitude jet under global warming will lead to poleward shifts of clouds and a positive radiative feedback on the climate system has been shown to be misguided by several recent studies. On interannual time scales, free-tropospheric clouds are observed to shift along with the jet, but low clouds increase across a broad expanse of the North Pacific Ocean basin, resulting in negligible changes in total cloud fraction and top-of-atmosphere radiation. Here it is shown that this low-cloud response is consistent across eight independent satellite-derived cloud products. Using multiple linear regression, it is demonstrated that the spatial pattern and magnitude of the low-cloud-coverage response is primarily driven by anomalous surface temperature advection. In the eastern North Pacific, anomalous cold advection by anomalous northerly surface winds enhances sensible and latent heat fluxes from the ocean into the boundary layer, resulting in large increases in low-cloud coverage. Local increases in low-level stability make a smaller contribution to this low-cloud increase. Despite closely capturing the observed response of large-scale meteorology to jet shifts, global climate models largely fail to capture the observed response of clouds and radiation to interannual jet shifts because they systematically underestimate how sensitive low clouds are to surface temperature advection, and to a lesser extent, low-level stability. More realistic model simulations of cloud-radiation-jet interactions require that parameterizations more accurately capture the sensitivity of low clouds to surface temperature advection. |
英文关键词 | North Pacific Ocean Jets Cloud cover Cloud radiative effects Satellite observations Interannual variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442338100002 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; ENERGY SYSTEM CERES ; COLD-AIR OUTBREAKS ; OPTICAL-DEPTH ; CMIP5 MODELS ; SUBTROPICAL STRATOCUMULUS ; CIRCULATION RESPONSE ; CLIMATE SENSITIVITY ; SOUTHERN-HEMISPHERE ; SHORTWAVE RADIATION |
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/19863 |
专题 | 气候变化 |
作者单位 | 1.Lawrence Livermore Natl Lab, Livermore, CA 94550 USA; 2.Univ Virginia, Charlottesville, VA USA; 3.Univ Calif Los Angeles, Los Angeles, CA USA; 4.Univ Oxford, Oxford, England; 5.Nanjing Univ, Sch Atmospher Sci, Nanjing, Jiangsu, Peoples R China; 6.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 7.Sci Syst & Applicat Inc, Lanham, MD USA |
推荐引用方式 GB/T 7714 | Zelinka, Mark D.,Grise, Kevin M.,Klein, Stephen A.,et al. Drivers of the Low-Cloud Response to Poleward Jet Shifts in the North Pacific in Observations and Models[J]. JOURNAL OF CLIMATE,2018,31(19):7925-7947. |
APA | Zelinka, Mark D.,Grise, Kevin M.,Klein, Stephen A.,Zhou, Chen,DeAngelis, Anthony M.,&Christensen, Matthew W..(2018).Drivers of the Low-Cloud Response to Poleward Jet Shifts in the North Pacific in Observations and Models.JOURNAL OF CLIMATE,31(19),7925-7947. |
MLA | Zelinka, Mark D.,et al."Drivers of the Low-Cloud Response to Poleward Jet Shifts in the North Pacific in Observations and Models".JOURNAL OF CLIMATE 31.19(2018):7925-7947. |
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