DOI: 10.1038/ngeo2321
论文题名: Early twentieth-century warming linked to tropical Pacific wind strength
作者: Thompson D.M. ; Cole J.E. ; Shen G.T. ; Tudhope A.W. ; Meehl G.A.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2015
卷: 8, 期: 2 起始页码: 117
结束页码: 121
语种: 英语
Scopus关键词: air temperature
; anthropogenic effect
; climate modeling
; global warming
; trade wind
; twentieth century
; wind field
; Pacific Ocean
; Pacific Ocean (Tropical)
; Anthozoa
英文摘要: Of the rise in global atmospheric temperature over the past century, nearly 30% occurred between 1910 and 1940 when anthropogenic forcings were relatively weak. This early warming has been attributed to internal factors, such as natural climate variability in the Atlantic region, and external factors, such as solar variability and greenhouse gas emissions. However, the warming is too large to be explained by external factors alone and it precedes Atlantic warming by over a decade. For the late twentieth century, observations and climate model simulations suggest that Pacific trade winds can modulate global temperatures, but instrumental data are scarce in the early twentieth century. Here we present a westerly wind reconstruction (1894-1982) from seasonally resolved measurements of Mn/Ca ratios in a western Pacific coral that tracks interannual to multidecadal Pacific climate variability. We then reconstruct central Pacific temperatures using Sr/Ca ratios in a coral from Jarvis Island, and find that weak trade winds and warm temperatures coincide with rapid global warming from 1910 to 1940. In contrast, winds are stronger and temperatures cooler between 1940 and 1970, when global temperature rise slowed down. We suggest that variations in Pacific wind strength at decadal timescales significantly influence the rate of surface air temperature change. © 2015 Macmillan Publishers Limited. All rights reserved Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106264
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Department of Geosciences, University of Arizona, Tucson, AZ, United States; Department of Atmospheric Sciences, University of Arizona, Tucson, AZ, United States; Proposal Exponent, Seattle, WA, United States; School of GeoSciences, University of Edinburgh, Edinburgh, United Kingdom; Climate Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, United States; National Center for Atmospheric Research, PO Box 3000, Boulder, CO, United States
Recommended Citation:
Thompson D.M.,Cole J.E.,Shen G.T.,et al. Early twentieth-century warming linked to tropical Pacific wind strength[J]. Nature Geoscience,2015-01-01,8(2)