DOI: 10.1175/JCLI-D-17-0388.1
Scopus记录号: 2-s2.0-85043721726
论文题名: Role of latent heating over the tropical western Pacific in surface temperature change over North America during boreal spring
作者: He B. ; Yang S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 6 起始页码: 2169
结束页码: 2184
语种: 英语
英文关键词: Climate variability
; Interannual variability
; Interdecadal variability
Scopus关键词: Atmospheric temperature
; Climate change
; Earth atmosphere
; Heating
; Mechanical waves
; Oceanography
; Orthogonal functions
; Surface properties
; Surface waters
; Tropics
; Atmospheric general circulation models
; Climate variability
; Empirical orthogonal function analysis
; Inter-decadal variability
; Interannual variability
; Sea surface temperature (SST)
; Surface temperature changes
; Tropical Western Pacific
; Fighter aircraft
; annual variation
; climate variation
; decadal variation
; general circulation model
; heating
; jet stream
; precipitation (climatology)
; sea surface temperature
; spring (season)
; North America
; Pacific Ocean
; Pacific Ocean (West)
英文摘要: Based on observational data, a linear baroclinic model, and an atmospheric general circulation model (AGCM), the major modes of spring precipitation over the tropical Asian and Pacific regions are identified. and the influence of latent heating over the tropical western Pacific (TWP) on global climate is investigated. Results show that the first mode of empirical orthogonal function analysis explains 20% of the total variance in March, the largest in spring, with the maximum center located over the TWP. The precipitation is highly positively correlated with local sea surface temperature (SST) in March, which suggests that the warming SST is the trigger for the precipitation over the TWP. Further analysis suggests that an increase in latent heating over the TWP, especially in March, can produce Rossby waves along the westerly jet, which causes an increase in surface temperature over North America. The propagation intensity decreases from March to May. The changes in location and strength of the westerly jet stream in the Northern Hemisphere are responsible for this decrease. Experiments with both a linear baroclinic model and an AGCM verify the above hypothesis. The study highlights that the spatial distributions of latent heating and westerly jet stream are the two key factors for the formation of teleconnection patterns from eastern Asia to North America. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111640
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing, China; School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Institute of Earth Climate and Environment System, Sun Yat-sen University, Guangzhou, China
Recommended Citation:
He B.,Yang S.. Role of latent heating over the tropical western Pacific in surface temperature change over North America during boreal spring[J]. Journal of Climate,2018-01-01,31(6)