气候变化领域集成服务门户(CCPortal): Possible climate transitions from breakup of stratocumulus decks under greenhouse warming

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DOI	10.1038/s41561-019-0310-1
	Possible climate transitions from breakup of stratocumulus decks under greenhouse warming
	Schneider T.; Kaul C.M.; Pressel K.G.
发表日期	2019
ISSN	17520894
EISSN	1752-0908
卷号	12 期号:3 页码:163-+
英文摘要	Stratocumulus clouds cover 20% of the low-latitude oceans and are especially prevalent in the subtropics. They cool the Earth by shading large portions of its surface from sunlight. However, as their dynamical scales are too small to be resolvable in global climate models, predictions of their response to greenhouse warming have remained uncertain. Here we report how stratocumulus decks respond to greenhouse warming in large-eddy simulations that explicitly resolve cloud dynamics in a representative subtropical region. In the simulations, stratocumulus decks become unstable and break up into scattered clouds when CO 2 levels rise above 1,200 ppm. In addition to the warming from rising CO 2 levels, this instability triggers a surface warming of about 8 K globally and 10 K in the subtropics. Once the stratocumulus decks have broken up, they only re-form once CO 2 concentrations drop substantially below the level at which the instability first occurred. Climate transitions that arise from this instability may have contributed importantly to hothouse climates and abrupt climate changes in the geological past. Such transitions to a much warmer climate may also occur in the future if CO 2 levels continue to rise. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
WOS研究方向	Geology
scopus关键词	climate change; climate modeling; Earth; greenhouse ecosystem; large eddy simulation; latitude; simulation; stratocumulus; subtropical region
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/94006
作者单位	California Institute of Technology, Pasadena, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Schneider T.,Kaul C.M.,Pressel K.G.. Possible climate transitions from breakup of stratocumulus decks under greenhouse warming[J],2019,12(3):163-+.
APA	Schneider T.,Kaul C.M.,&Pressel K.G..(2019).Possible climate transitions from breakup of stratocumulus decks under greenhouse warming.Nature Geoscience,12(3),163-+.
MLA	Schneider T.,et al."Possible climate transitions from breakup of stratocumulus decks under greenhouse warming".Nature Geoscience 12.3(2019):163-+.