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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50193

Title: Nonlinear climatic sensitivity to greenhouse gases over past 4 glacial/interglacial cycles
Authors: Li Lo
Sheng-Pu Chang
Kuo-Yen Wei
Shih-Yu Lee
Tsong-Hua Ou
Yi-Chi Chen
Chih-Kai Chuang
Horng-Sheng Mii
George S. Burr
Min-Te Chen
Ying-Hung Tung
Meng-Chieh Tsai
David A. Hodell
Chuan-Chou Shen
Contributors: 國立臺灣海洋大學:應用地球科學研究所
Date: 2017-07
Issue Date: 2018-09-20T03:10:24Z
Publisher: Scientific Peports
Abstract: Abstract: The paleoclimatic sensitivity to atmospheric greenhouse gases (GHGs) has recently been suggested to be nonlinear, however a GHG threshold value associated with deglaciation remains uncertain. Here, we combine a new sea surface temperature record spanning the last 360,000 years from the southern Western Pacific Warm Pool with records from five previous studies in the equatorial Pacific to document the nonlinear relationship between climatic sensitivity and GHG levels over the past four glacial/interglacial cycles. The sensitivity of the responses to GHG concentrations rises dramatically by a factor of 2–4 at atmospheric CO2 levels of >220 ppm. Our results suggest that the equatorial Pacific acts as a nonlinear amplifier that allows global climate to transition from deglacial to full interglacial conditions once atmospheric CO2 levels reach threshold levels.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50193
Appears in Collections:[應用地球科學研究所] 期刊論文

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