【摘 要】
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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
【机 构】
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Department of Atmospheric and Oceanic Sciences/Institute of Atmospheric Sciences,Fudan University,Sh
论文部分内容阅读
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.
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