DOI: 10.1175/JCLI-D-13-00548.1
Scopus记录号: 2-s2.0-84903398794
论文题名: Simulating the role of subtropical stratocumulus clouds in driving Pacific climate variability
作者: Bellomo K. ; Clement A. ; Mauritsen T. ; Rädel G. ; Stevens B.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 13 起始页码: 5119
结束页码: 5131
语种: 英语
Scopus关键词: Climate models
; Clouds
; Feedback
; Oceanography
; Tropics
; Atmosphere-ocean interactions
; Atmospheric circulation
; Atmospheric general circulation models
; Cloud liquid waters
; Decadal climate variability
; Interannual variability
; Pacific decadal oscillation
; Stratocumulus clouds
; Climatology
; air-sea interaction
; atmospheric general circulation model
; climate feedback
; climate modeling
; climate variation
; El Nino-Southern Oscillation
; Pacific Decadal Oscillation
; sea surface temperature
; stratocumulus
; Pacific Ocean
; Pacific Ocean (Northeast)
; Pacific Ocean (Southeast)
英文摘要: This study examines the influence of the northeast and southeast Pacific subtropical stratocumulus cloud regions on the modes of Pacific climate variability simulated by an atmospheric general circulation model (ECHAM6) coupled to a slab ocean. The sensitivity of cloud liquid water to underlying SST is changed in the radiation module of the atmospheric model to increase the strength of positive low-cloud feedback in the two regions. Enhanced low-cloud feedback increases the persistence and variance of the leading modes of climate variability at decadal and longer time scales. Additional integrations show that the southeast Pacific influences climate variability in the equatorial ENSO region, whereas the effects of the northeast Pacific remain confined to the North Pacific. The results herein suggest that a positive feedback among SST, cloud cover, and large-scale atmospheric circulation can explain decadal climate variability in the Pacific Ocean. In particular, cloud feedbacks over the subtropical stratocumulus regions set the time scale of climate variability. A proper representation of low-level cloud feedbacks in the subtropical stratocumulus regions could therefore improve the simulation of Pacific climate variability. © 2014 American Meteorological Society. 资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51151
Appears in Collections: 气候变化事实与影响
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作者单位: Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States; Max Planck Institute for Meteorology, Hamburg, Germany
Recommended Citation:
Bellomo K.,Clement A.,Mauritsen T.,et al. Simulating the role of subtropical stratocumulus clouds in driving Pacific climate variability[J]. Journal of Climate,2014-01-01,27(13)