Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1038/s41561-018-0242-1 |
Climatic and volcanic forcing of tropical belt northern boundary over the past 800 years | |
Alfaro-Sanchez, R.1,2; Nguyen, H.3; Klesse, S.2; Hudson, A.2; Belmecheri, S.2; Kose, N.4; Diaz, H. F.5; Monson, R. K.2,6; Villalba, R.7; Trouet, V.2 | |
通讯作者 | Alfaro-Sanchez, R. |
来源期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:12页码:933-+ |
英文摘要 | The position of the northern boundary of the tropical belt affects the hydroclimate of many arid and semi-arid regions in the Northern Hemisphere. Widening of the tropical belt since the 1970s has largely been attributed to anthropogenic forcing. However, the relative influence of natural drivers of tropical belt expansion and contraction before this time is poorly understood. Here we use data on tree-ring widths from five mid-latitude regions in the Northern Hemisphere to reconstruct the movement of the northern boundary of the early spring tropical belt over the past 800 years (AD 1203-2003). Our reconstruction explains 45% of the interannual variance in the latitudinal extent of the Hadley circulation, a metric of the position of the tropical belt boundary. We find that the tropical belt contracted (expanded) during positive (negative) phases of the El Nino Southern Oscillation and Pacific North American teleconnection patterns. The tropical belt also contracted significantly following major volcanic events that injected sulfur into the stratosphere. The longest period of persistent tropical belt expansion occurred in the late sixteenth century, during one of the coldest periods of the Little Ice Age. Our results warn of potential socioeconomic consequences of future variations in tropical belt width driven by natural climate variability or stratospheric aerosol injections, whether volcanic or artificial. |
类型 | Article |
语种 | 英语 |
国家 | Spain ; USA ; Australia ; Turkey ; Argentina |
收录类别 | SCI-E |
WOS记录号 | WOS:000451837900013 |
WOS关键词 | HADLEY CIRCULATION ; EL-NINO ; EXPANSION ; VARIABILITY ; AEROSOL ; RECONSTRUCTION ; OSCILLATION ; HEMISPHERE ; REANALYSES ; ERUPTIONS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
来源机构 | University of Arizona |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/211810 |
作者单位 | 1.CREAF, Barcelona, Spain; 2.Univ Arizona, Lab Tree Ring Res, Tucson, AZ USA; 3.Bur Meteorol, Melbourne, Vic, Australia; 4.Istanbul Univ Cerrahpasa, Forestry Fac, Forest Bot Dept, Bahcekoy, Turkey; 5.Univ Hawaii Manoa, Dept Geog & Environm, Honolulu, HI 96822 USA; 6.Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ USA; 7.Consejo Nacl Invest Cient & Tecn, IANIGLA, Glaciol & Ciencias Ambientales, Inst Argentino Nivol, Mendoza, Argentina |
推荐引用方式 GB/T 7714 | Alfaro-Sanchez, R.,Nguyen, H.,Klesse, S.,et al. Climatic and volcanic forcing of tropical belt northern boundary over the past 800 years[J]. University of Arizona,2018,11(12):933-+. |
APA | Alfaro-Sanchez, R..,Nguyen, H..,Klesse, S..,Hudson, A..,Belmecheri, S..,...&Trouet, V..(2018).Climatic and volcanic forcing of tropical belt northern boundary over the past 800 years.NATURE GEOSCIENCE,11(12),933-+. |
MLA | Alfaro-Sanchez, R.,et al."Climatic and volcanic forcing of tropical belt northern boundary over the past 800 years".NATURE GEOSCIENCE 11.12(2018):933-+. |
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