Role of the warming trend in global land surface air temperature variations  

作　　者：Zhiyan ZUO Dong XIAO Qiong HE 

机构地区：[1]Department of Atmospheric and Oceanic Sciences/Institute of Atmospheric Sciences,Fudan University,Shanghai,200438,China [2]Skate Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences,Beijing,100081,China [3]Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science&Technology,Nanjing,210041,China

出　　处：《Science China Earth Sciences》2021年第6期866-871,共6页中国科学（地球科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.41822503,41375092);the National Key R&D Program(Grant No.2016YFA0601502)。

摘　　要：Global warming and its climatic and environmental effects have mainly been investigated in terms of the absolute warming rate.Little attention has been paid to the contribution of absolute warming rate to variability on various time scales of surface air temperature(SAT),which may be a more direct index for measuring the ecoclimatic effect of warming trend.The present study analyzed the role of secular warming trend in the variations of global land SAT for 1901–2016.Less than one-third of annual SAT variations were contributed by the warming trend over large parts of the globe generally.The ratios were up to two-thirds over eastern South America,parts of South Africa and the regions around the southwestern Mediterranean and Sunda islands where the absolute warming rate was moderate but the endemic species were undergoing exceptional loss of habitat.The ratios also exhibited smallest seasonal difference over these regions.Therefore,the ratio of the warming trend to the SAT variations may be a better measure compared to the absolute warming rate for the local ecoclimate.We should also pay more attention to the regions with high ratio,not only the regions with the high absolute warming rate.

关 键 词：Surface air temperature Warming trend VARIATIONS RATIO 

分 类 号：P467[天文地球—大气科学及气象学] P423.3