DOI: 10.1002/2013GL058646
论文题名: Weakening of atmospheric information flow in a warming climate in the Community Climate System Model
作者: Deng Y. ; Ebert-Uphoff I.
刊名: Geophysical Research Letters
ISSN: 0094-10530
EISSN: 1944-10261
出版年: 2014
卷: 41, 期: 1 起始页码: 193
结束页码: 200
语种: 英语
英文关键词: causal discovery
; climate change
; graphical models
; information flow
; machine learning
Scopus关键词: causal discovery
; Climate projection
; Community climate system model
; Geo-potential heights
; Geographical locations
; GraphicaL model
; Information flows
; Northern Hemispheres
; Atmospheric movements
; Climate change
; Computer simulation
; Graphic methods
; Greenhouse gases
; Learning systems
; Climate models
; atmospheric modeling
; climate change
; climate modeling
; graphical method
; information management
; Northern Hemisphere
; simulation
英文摘要: We introduce a new perspective of climate change by revealing the changing characteristics of atmospheric information flow in a warming climate. The key idea is to interpret large-scale atmospheric dynamical processes as information flow around the globe and to identify the pathways of this information flow using a climate network based on causal discovery and graphical models. We construct such networks using the daily geopotential height data from the Community Climate System Model Version 4.0 (CCSM4.0)'s 20th century climate simulation and 21st century climate projection. We show that in the CCSM4.0 model under enhanced greenhouse gases (GHGs) forcing, prominent midlatitude information pathways in the midtroposphere weaken and shift poleward, while major tropical information pathways start diminishing. Averaged over the entire Northern Hemisphere, the atmospheric information flow weakens. The implications of this weakening for the interconnectivity among different geographical locations and for the intrinsic predictability of the atmosphere are discussed. Key Points Midlatitude information pathways weaken and shift poleward as the climate warms. Major tropical information pathways start diminishing. Averaged over the Northern Hemisphere, the atmospheric information flow weakens. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896703080&doi=10.1002%2f2013GL058646&partnerID=40&md5=43867ad940285506a280fe3dd76996a5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7794
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States
Recommended Citation:
Deng Y.,Ebert-Uphoff I.. Weakening of atmospheric information flow in a warming climate in the Community Climate System Model[J]. Geophysical Research Letters,2014-01-01,41(1).