DOI: 10.1175/JCLI-D-17-0372.1
Scopus记录号: 2-s2.0-85049750143
论文题名: Atlantic multidecadal variability as a modulator of precipitation variability in the Southwest United States
作者: Lee D.E. ; Ting M. ; Vigaud N. ; Kushnir Y. ; Barnston A.G.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 14 起始页码: 5525
结束页码: 5542
语种: 英语
英文关键词: Atmosphere-ocean interaction
; Climate models
; Climate variability
; Multidecadal variability
; Precipitation
Scopus关键词: Atmospheric thermodynamics
; Climate models
; Climatology
; Precipitation (chemical)
; Atmosphere-ocean interactions
; Atmospheric general circulation models
; Climate variability
; Multidecadal variability
; Precipitation variability
; Seasonal mean precipitation
; Thermal structure
; Tropical atlantic
; Rain
; advection
; air-sea interaction
; climate modeling
; climate variation
; decadal variation
; overturn
; precipitation (climatology)
; Atlantic Ocean
; United States
英文摘要: Two independent atmospheric general circulation models reveal that the positive (negative) phase of Atlantic multidecadal variability (AMV) can reduce (amplify) the variance of the shorter time-scale (e.g., ENSO related) precipitation fluctuations in the United States, especially in the Southwest, as well as decrease (increase) the long-term seasonal mean precipitation for the cold season. The variance is modulated because of changes in 1) dry day frequency and 2) maximum daily rainfall intensity. With positive AMV forcing, the upper-level warming originating from the increased precipitation over the tropical Atlantic Ocean changes the mean vertical thermal structure over the United States continent to a profile less favorable for rain-inducing upward motions. In addition, a northerly low-level dry advection associated with the local overturning leaves less available column moisture for condensation and precipitation. The opposite conditions occur during cold AMV periods. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111481
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; International Research Institute for Climate and Society, Columbia University, Palisades, NY, United States
Recommended Citation:
Lee D.E.,Ting M.,Vigaud N.,et al. Atlantic multidecadal variability as a modulator of precipitation variability in the Southwest United States[J]. Journal of Climate,2018-01-01,31(14)