globalchange  > 气候减缓与适应
DOI: 10.1002/grl.51009
论文题名:
An information-theoretic perspective on teleconnections
作者: Greene A.M.
刊名: Geophysical Research Letters
ISSN: 0094-8509
EISSN: 1944-8240
出版年: 2013
卷: 40, 期:19
起始页码: 5258
结束页码: 5262
语种: 英语
英文关键词: channel capacity ; information theory ; mutual information ; Shannon ; teleconnections
Scopus关键词: Atmospheric teleconnections ; Correlation coefficient ; Mutual informations ; Non-linear transformations ; Sea surface temperature (SST) ; Seasonal precipitations ; Shannon ; Teleconnections ; Atmospheric temperature ; Climatology ; Communication ; Information theory ; Mathematical transformations ; Oceanography ; Channel capacity ; air-sea interaction ; atmospheric forcing ; climate variation ; environmental degradation ; nonlinearity ; sea surface temperature ; teleconnection ; theoretical study
英文摘要: A classical paradigm for terrestrial climate variability involves remote sea surface temperature forcing, communicated to receptor regions via atmospheric teleconnections. Here the teleconnection link is abstracted in terms of Shannon's information-theoretic measure "channel capacity." An upper bound on the channel capacity for December-January-February (DJF) seasonal precipitation teleconnections with sea surface temperature in the NINO3.4 region, when both variables are tercile-quantized, is estimated as 1 bit, meaning that it is only marginally possible to distinguish reliably between two NINO3.4 input states on the basis of observed precipitation output amounts, the central tercile acting principally to degrade reliability. A relationship between the channel capacity in a continuous model and the correlation coefficient is established; the corresponding nonlinear transformation provides a useful shift in perspective on the communication of information as such via teleconnections. Key Points Teleconnections are characterized for the first time using information theory This metric casts remote SST-driven climate variability in a new light Results have implications for the communication of climate information ©2013. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885498580&doi=10.1002%2fgrl.51009&partnerID=40&md5=9a8567941e966ef1168b719c6f7c9e32
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5773
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作者单位: International Research Institute for Climate and Society, Earth Institute, Columbia University, Palisades, NY, United States

Recommended Citation:
Greene A.M.. An information-theoretic perspective on teleconnections[J]. Geophysical Research Letters,2013-01-01,40(19).
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