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DOI | 10.1007/s00382-017-3651-8 |
Coupling between marine boundary layer clouds and summer-to-summer sea surface temperature variability over the North Atlantic and Pacific | |
Myers, Timothy A.1; Mechoso, Carlos R.1; DeFlorio, Michael J.2 | |
2018-02-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 50页码:955-969 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Climate modes of variability over the Atlantic and Pacific may be amplified by a positive feedback between sea-surface temperature (SST) and marine boundary layer clouds. However, it is well known that climate models poorly simulate this feedback. Does this deficiency contribute to model-to-model differences in the representation of climate modes of variability? Over both the North Atlantic and Pacific, typical summertime interannual to interdecadal SST variability exhibits horseshoe-like patterns of co-located anomalies of shortwave cloud radiative effect (CRE), low-level cloud fraction, SST, and estimated inversion strength over the subtropics and midlatitudes that are consistent with a positive cloud feedback. During winter over the midlatitudes, this feedback appears to be diminished. Models participating in the Coupled Model Intercomparison Project phase 5 that simulate a weak feedback between subtropical SST and shortwave CRE produce smaller and less realistic amplitudes of summertime SST and CRE variability over the northern oceans compared to models with a stronger feedback. The change in SST amplitude per unit change in CRE amplitude among the models and observations may be understood as the temperature response of the ocean mixed layer to a unit change in radiative flux over the course of a season. These results highlight the importance of boundary layer clouds in interannual to interdecadal atmosphere-ocean variability over the northern oceans during summer. The results also suggest that deficiencies in the simulation of these clouds in coupled climate models contribute to underestimation in their simulation of summer-to-summer SST variability. |
英文关键词 | Clouds Marine boundary layer Climate variability Sea surface temperature Climate models |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425328700013 |
WOS关键词 | MULTIDECADAL OSCILLATION ; STRATOCUMULUS CLOUDS ; HEAT-FLUX ; FEEDBACK ; CLIMATE ; SST ; MODEL ; OCEAN ; SYSTEM ; WINTER |
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/36288 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, 520 Portola Plaza,7127 Math Sci Bldg, Los Angeles, CA 90095 USA; 2.CALTECH, Jet Prop Lab, Pasadena, CA USA |
推荐引用方式 GB/T 7714 | Myers, Timothy A.,Mechoso, Carlos R.,DeFlorio, Michael J.. Coupling between marine boundary layer clouds and summer-to-summer sea surface temperature variability over the North Atlantic and Pacific[J]. CLIMATE DYNAMICS,2018,50:955-969. |
APA | Myers, Timothy A.,Mechoso, Carlos R.,&DeFlorio, Michael J..(2018).Coupling between marine boundary layer clouds and summer-to-summer sea surface temperature variability over the North Atlantic and Pacific.CLIMATE DYNAMICS,50,955-969. |
MLA | Myers, Timothy A.,et al."Coupling between marine boundary layer clouds and summer-to-summer sea surface temperature variability over the North Atlantic and Pacific".CLIMATE DYNAMICS 50(2018):955-969. |
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