DOI: 10.1002/wcc.251
Scopus记录号: 2-s2.0-84890350523
论文题名: The expanding tropics: A critical assessment of the observational and modeling studies
作者: Lucas C ; , Timbal B ; , Nguyen H
刊名: Wiley Interdisciplinary Reviews: Climate Change
ISSN: 17577780
出版年: 2014
卷: 5, 期: 1 起始页码: 89
结束页码: 112
语种: 英语
英文关键词: Climate change
; Ozone layer
; Anthropogenic aerosols
; General circulation model
; Meridional circulation
; Precise determinations
; Relative contribution
; Southern Hemisphere
; Stratospheric ozone depletion
; Tropical-extratropical interactions
; Tropics
; aerosol
; climate forcing
; greenhouse gas
; meridional circulation
; Northern Hemisphere
; ozone depletion
; Southern Hemisphere
; stratosphere
; tropical environment
英文摘要: This review provides comprehensive coverage of the tropical expansion literature to date. The primary focus is on the annual- and zonal-mean behavior of the phenomenon. An idealized model that identifies the mean meridional circulation as a hemisphere-wide structure with significant tropical-extratropical interaction is introduced as background for the understanding of the expansion and the methodologies used for detection. A variety of metrics from different data sources have been used to identify an expansion of the global tropics since 1979 by 1°-3° latitude in each hemisphere, an average trend of approximately 0.5°-1.0° decade-1. The symmetry of this expansion-whether Northern and Southern hemispheres are expanding at the same rate-is unclear. Limitations of observational datasets, including reanalyses, prevent a more precise determination at this time. General circulation models are able to qualitatively reproduce this expansion, but generally underestimate its magnitude. Multiple factors have been identified as potential drivers of the expansion, including increasing greenhouses gases, stratospheric ozone depletion, and anthropogenic aerosols. No single factor by itself appears to explain the full expansion, perhaps a shortcoming of the models or experiment design. It may be that some combination of these forcings is producing the change, but the relative contribution of each forcing to the expansion is currently unknown. The key issues remaining to be resolved are briefly summarized at the end. © 2013 John Wiley & Sons, Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/76351
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Centre for Australian Weather and Climate Research, Bureau of Meteorology, Melbourne, Vic, Australia
Recommended Citation:
Lucas C,, Timbal B,, Nguyen H. The expanding tropics: A critical assessment of the observational and modeling studies[J]. Wiley Interdisciplinary Reviews: Climate Change,2014-01-01,5(1)