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| DOI | 10.1175/BAMS-D-19-0047.1 |
| Tropical widening: From global variations to regional impacts | |
| Staten P.W.; Grise K.M.; Davis S.M.; Karnauskas K.B.; Waugh D.W.; Maycock A.C.; Fu Q.; Cook K.; Adam O.; Simpson I.R.; Allen R.J.; Rosenlof K.; Chen G.; Ummenhofer C.C.; Quan X.-W.; Kossin J.P.; Davis N.A.; Son S.-W. | |
| 发表日期 | 2020 |
| ISSN | 00030007 |
| 起始页码 | E897 |
| 结束页码 | E904 |
| 卷号 | 101期号:6 |
| 英文摘要 | Over the past 15 years, numerous studies have suggested that the sinking branches of Earth's Hadley circulation and the associated subtropical dry zones have shifted poleward over the late twentieth century and early twenty-first century. Early estimates of this tropical widening from satellite observations and reanalyses varied from 0.25° to 3° latitude per decade, while estimates from global climate models show widening at the lower end of the observed range. In 2016, two working groups, the U.S. Climate Variability and Predictability (CLIVAR) working group on the Changing Width of the Tropical Belt and the International Space Science Institute (ISSI) Tropical Width Diagnostics Intercomparison Project, were formed to synthesize current understanding of the magnitude, causes, and impacts of the recent tropical widening evident in observations. These working groups concluded that the large rates of observed tropical widening noted by earlier studies resulted from their use of metrics that poorly capture changes in the Hadley circulation, or from the use of reanalyses that contained spurious trends. Accounting for these issues reduces the range of observed expansion rates to 0.25°-0.5° latitude decade-1 - within the range from model simulations. Models indicate that most of the recent Northern Hemisphere tropical widening is consistent with natural variability, whereas increasing greenhouse gases and decreasing stratospheric ozone likely played an important role in Southern Hemisphere widening. Whatever the cause or rate of expansion, understanding the regional impacts of tropical widening requires additional work, as different forcings can produce different regional patterns of widening. © 2020 American Meteorological Society. |
| 语种 | 英语 |
| scopus关键词 | Climate models; Expansion; Greenhouse gases; Mobile telecommunication systems; Ozone layer; Climate variability; Global climate model; Hadley circulation; Natural variability; Northern Hemispheres; Satellite observations; Southern Hemisphere; Stratospheric ozone; Tropics |
| 来源期刊 | Bulletin of the American Meteorological Society
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/177864 |
| 作者单位 | Department of Earth and Atmospheric Sciences, Indiana University Bloomington, Bloomington, IN, United States; Department of Environmental Sciences, University of Virginia, Charlottesville, VA, United States; Chemical Sciences Division, NOAA/Earth System Research Laboratory, Boulder, CO, United States; Department of Atmospheric and Oceanic Sciences, Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD, United States; School of Earth and Environment, University of Leeds, Leeds, United Kingdom; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Department of Geological Sciences, University of Texas at Austin, Austin, TX, United States; Hebrew University of Jerusalem, Jerusalem, Israel; Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Department of Earth and Pl... |
| 推荐引用方式 GB/T 7714 | Staten P.W.,Grise K.M.,Davis S.M.,et al. Tropical widening: From global variations to regional impacts[J],2020,101(6). |
| APA | Staten P.W..,Grise K.M..,Davis S.M..,Karnauskas K.B..,Waugh D.W..,...&Son S.-W..(2020).Tropical widening: From global variations to regional impacts.Bulletin of the American Meteorological Society,101(6). |
| MLA | Staten P.W.,et al."Tropical widening: From global variations to regional impacts".Bulletin of the American Meteorological Society 101.6(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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