Scopus记录号: 2-s2.0-85062072353
论文题名: Possible climate transitions from breakup of stratocumulus decks under greenhouse warming
作者: Schneider T. ; Kaul C.M. ; Pressel K.G.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2019
卷: 12, 期: 3 起始页码: 164
结束页码: 168
语种: 英语
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. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122600
Appears in Collections: 气候变化事实与影响
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作者单位: California Institute of Technology, Pasadena, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Schneider T.,Kaul C.M.,Pressel K.G.. Possible climate transitions from breakup of stratocumulus decks under greenhouse warming[J]. Nature Geoscience,2019-01-01,12(3)