Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL078242 |
Cloud Feedback Key to Marine Heatwave off Baja California | |
Myers, Timothy A.1; Mechoso, Carlos R.1; Cesana, Gregory V.2,3; DeFlorio, Michael J.4; Waliser, Duane E.4 | |
2018-05-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:9页码:4345-4352 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Between 2013 and 2015, the northeast Pacific Ocean experienced the warmest surface temperature anomalies in the modern observational record. This "marine heatwave" marked a shift of Pacific decadal variability to its warm phase and was linked to significant impacts on marine species as well as exceptionally arid conditions in western North America. Here we show that the subtropical signature of this warming, off Baja California, was associated with a record deficit in the spatial coverage of co-located marine boundary layer clouds. This deficit coincided with a large increase in downwelling solar radiation that dominated the anomalous energy budget of the upper ocean, resulting in record-breaking warm sea surface temperature anomalies. Our observation-based analysis suggests that a positive cloud-surface temperature feedback was key to the extreme intensity of the heatwave. The results demonstrate the extent to which boundary layer clouds can contribute to regional variations in climate. Plain Language Summary The northeast Pacific Ocean experienced a "marine heatwave" between 2013 and 2015. This was characterized by the highest surface temperatures ever recorded in a vast swath of the ocean from near the Gulf of Alaska to off the coast of Baja California. The unprecedented warming event was linked to significant impacts on marine life and a severe drought in western North America. We analyze satellite data to show that the heatwave was associated with a record decrease in the typically high cloudiness over an area of the Pacific off Baja California that is roughly half the size of the contiguous United States. Such a deficit in cloud cover coincided with a large increase in the amount of sunlight absorbed by the ocean surface, resulting in extremely warm temperatures. Our findings suggest that a reinforcing interaction (or positive feedback) between clouds and ocean surface temperature can strongly contribute to significant and difficult-to-predict changes in marine climate. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434111700066 |
WOS关键词 | ATLANTIC MULTIDECADAL OSCILLATION ; NORTHEAST PACIFIC ; IN-SITU ; MODEL ; ATMOSPHERE ; IMPACTS ; CLIMATE ; SYSTEM |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/28180 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA; 2.Columbia Univ, Dept Appl Phys & Math, New York, NY USA; 3.NASA, Goddard Inst Space Studies, New York, NY 10025 USA; 4.CALTECH, Jet Prop Lab, Pasadena, CA USA |
推荐引用方式 GB/T 7714 | Myers, Timothy A.,Mechoso, Carlos R.,Cesana, Gregory V.,et al. Cloud Feedback Key to Marine Heatwave off Baja California[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(9):4345-4352. |
APA | Myers, Timothy A.,Mechoso, Carlos R.,Cesana, Gregory V.,DeFlorio, Michael J.,&Waliser, Duane E..(2018).Cloud Feedback Key to Marine Heatwave off Baja California.GEOPHYSICAL RESEARCH LETTERS,45(9),4345-4352. |
MLA | Myers, Timothy A.,et al."Cloud Feedback Key to Marine Heatwave off Baja California".GEOPHYSICAL RESEARCH LETTERS 45.9(2018):4345-4352. |
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