Global mean sea-level rise in a world agreed upon in Paris

被引:18
作者
Bittermann, Klaus [1 ,2 ]
Rahmstorf, Stefan [2 ]
Kopp, Robert E. [3 ,4 ]
Kemp, Andrew C. [1 ]
机构
[1] Tufts Univ, Dept Earth & Ocean Sci, Medford, MA 02155 USA
[2] Potsdam Inst Climate Impact Res, Earth Syst Anal, D-14473 Potsdam, Germany
[3] Rutgers State Univ, Dept Earth & Planetary Sci, Piscataway, NJ 08854 USA
[4] Rutgers State Univ, Inst Earth Ocean & Atmospher Sci, New Brunswick, NJ 08901 USA
来源
ENVIRONMENTAL RESEARCH LETTERS | 2017年 / 12卷 / 12期
基金
美国国家科学基金会;
关键词
global mean sea level; Paris accord; semi-empirical sea-level model; global mean sea-level projections; CLIMATE-CHANGE; VARIABILITY; SCENARIOS; POLICY; PREINDUSTRIAL; ACCELERATION; TEMPERATURE; ANTARCTICA; GLACIERS; THWAITES;
D O I
10.1088/1748-9326/aa9def
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Although the 2015 Paris Agreement seeks to hold global average temperature to 'well below 2 degrees C above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5 degrees C above pre-industrial levels', projections of global mean sea-level (GMSL) rise commonly focus on scenarios in which there is a high probability that warming exceeds 1.5 degrees C. Using a semi-empirical model, we project GMSL changes between now and 2150 CE under a suite of temperature scenarios that satisfy the Paris Agreement temperature targets. The projected magnitude and rate of GMSL rise varies among these low emissions scenarios. Stabilizing temperature at 1.5 degrees C instead of 2 degrees C above preindustrial reduces GMSL in 2150 CE by 17 cm(90% credible interval: 14-21 cm) and reduces peak rates of rise by 1.9 mm yr(-1) (90% credible interval: 1.4-2.6 mm yr(-1)). Delaying the year of peak temperature has little long-term influence on GMSL, but does reduce the maximum rate of rise. Stabilizing at 2 degrees C in 2080 CE rather than 2030 CE reduces the peak rate by 2.7 mm yr(-1) (90% credible interval: 2.0-4.0 mm yr(-1)).
引用
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页数:9
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