globalchange  > 影响、适应和脆弱性
DOI: 10.1175/JCLI-D-18-0108.1
Scopus记录号: 2-s2.0-85052739529
论文题名:
Revisiting the relationship among metrics of tropical expansion
作者: Waugh D.W.; Grise K.M.; Seviour W.J.M.; Davis S.M.; Davis N.; Adam O.; Son S.-W.; Simpson I.R.; Staten P.W.; Maycock A.C.; Ummenhofer C.C.; Birner T.; Ming A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期:18
起始页码: 7565
结束页码: 7581
语种: 英语
英文关键词: Hadley circulation ; Hydrologic cycle ; Meridional overturning circulation
Scopus关键词: Carbon dioxide ; Climate models ; Clouds ; Expansion ; Coupled climate model ; Expansion rate ; Hadley circulation ; Hydrologic cycles ; Meridional overturning circulations ; Outgoing longwave radiation ; Southern Hemisphere ; Subtropical jet ; Tropics
英文摘要: There is mounting evidence that the width of the tropics has increased over the last few decades, but there are large differences in reported expansion rates. This is, likely, in part due to the wide variety of metrics that have been used to define the tropical width. Here we perform a systematic investigation into the relationship among nine metrics of the zonal-mean tropical width using preindustrial control and abrupt quadrupling of CO2 simulations from a suite of coupled climate models. It is shown that the latitudes of the edge of the Hadley cell, the midlatitude eddy-driven jet, the edge of the subtropical dry zones, and the Southern Hemisphere subtropical high covary interannually and exhibit similar long-term responses to a quadrupling of CO2. However, metrics based on the outgoing longwave radiation, the position of the subtropical jet, the break in the tropopause, and theNorthernHemisphere subtropical high have very weak covariations with the abovemetrics and/or respond differently to increases in CO2 and thus are not good indicators of the expansion of the Hadley cell or subtropical dry zone. The differing variability and responses to increases in CO2 amongmetrics highlights that care is needed when choosing metrics for studies of the width of the tropics and that it is important tomake sure the metric used is appropriate for the specific phenomena and impacts being examined. © 2018 American Meteorological Society.
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被引频次[WOS]:62   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110685
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD, United States; School of Mathematics, University of New South Wales, Sydney, NSW, Australia; Department of Environmental Sciences, University of Virginia, Charlottesville, VA, United States; NOAA, Earth System Research Laboratory, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; Hebrew University of Jerusalem, Jerusalem, Israel; School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Department of Earth and Atmospheric Sciences, Indiana University Bloomington, Bloomington, IN, United States; School of Earth and Environment, University of Leeds, Leeds, United Kingdom; Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; British Antarctic Survey, Cambridge, United Kingdom; Meteorological Institute, Ludwig-Maximilians-University, Munich, Germany

Recommended Citation:
Waugh D.W.,Grise K.M.,Seviour W.J.M.,et al. Revisiting the relationship among metrics of tropical expansion[J]. Journal of Climate,2018-01-01,31(18)
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