Stable Isotope Evidence for Recent Global Warming Hiatus

查看全文 作　　者：Rui [1]Wang;Zhongfang [1]Liu

机构地区：[1]State Key Laboratory of Marine Geology,Tongji University,Shanghai 200092,China

出　　处：《Journal of Earth Science》索引2020年第31卷第2期,共6页

基　　金：This work were supported by the China Young 1000-Talent Program and the National Nature Science Foundation of China(No.41876039). 摘　　要：Global mean surface air temperature(SAT)has remained relative stagnant since the late 1990s,a phenomenon known as global warming hiatus.Despite widespread concern and discussion,there is still an open question about whether this hiatus exists,partly due to the biases in observations.The stable isotopic composition of precipitation in mid-and high-latitude continents closely tracks change of the air temperature,providing an alternative to evaluate global warming hiatus.Here we use the long-term precipitation δ^18O records available to investigate changes in SAT over the period 1970–2016.The results reveal slight decline in δ^18O anomaly from 1998 to 2012,with a slope of?0.0004‰decade?1 which is significantly different from that of pre-1998 interval This downwardδ18O anomaly trend suggests a slight cooling for about?0.001℃ decade?1,corroborating the recent hiatus in global warming.Our work provides new evidence for recent global warming hiatus and highlights the potential of utilizing precipitation isotope for tracking climate changes. 关键词：global WARMING HIATUS precipitationδ^18O CLIMATE change

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Stable Isotope Evidence for Recent Global Warming Hiatus

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