Lo, Li; Chang, Sheng-Pu; Wei, Kuo-Yen; Lee, Shih-Yu; Ou, Tsong-Hua; Chen, Yi-Chi; Chuang, Chih-Kai; Mii, Horng-Sheng; Burr, George S; Chen, Min-Te; Tung, Ying-Hung; Tsai, Meng-Chieh; Hodell, David A; Shen, Chuan-Chou (2019): Age model, oxygen isotopes and Mg/Ca ratios from plantonik foraminifera of sediment core MD05-2925 off the Solomon Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.899217
Always quote citation above when using data! You can download the citation in several formats below.
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.
Related to:
Lo, Li; Chang, Sheng-Pu; Wei, Kuo-Yen; Lee, Shih-Yu; Ou, Tsong-Hua; Chen, Yi-Chi; Chuang, Chih-Kai; Mii, Horng-Sheng; Burr, George S; Chen, Min-Te; Tung, Ying-Hung; Tsai, Meng-Chieh; Hodell, David A; Shen, Chuan-Chou (2017): Nonlinear climatic sensitivity to greenhouse gases over past 4 glacial/interglacial cycles. Scientific Reports, 7(1), https://doi.org/10.1038/s41598-017-04031-x
Coverage:
Latitude: -9.343500 * Longitude: 151.460200
Date/Time Start: 2005-06-22T00:00:00 * Date/Time End: 2005-06-22T00:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Lo, L; Chang, S-P; Wei, K-Y et al. (2019): Age model, oxygen isotopes and Mg/Ca ratios of Globigerinoides ruber from sediment core MD05-2925 off the Solomon Sea. https://doi.org/10.1594/PANGAEA.899209
- Lo, L; Chang, S-P; Wei, K-Y et al. (2019): Age model and oxygen isotopes of planktonic foraminifera from sediment core MD05-2925 off the Solomon Sea. https://doi.org/10.1594/PANGAEA.899216