Re-Assessing Climatic Warming in China since 1900

作者：Zhongwei YAN,Yihui DING,Panmao ZHAI,Lianchun SONG,Lijuan CAO,Zhen LI

摘要：The regional mean surface air temperature(SAT)in China has risen with a rate of 1.3–1.7℃(100 yr)^-1 since 1900,based on the recently developed homogenized observations.This estimate is larger than those[0.5–0.8℃(100 yr)^-1]adopted in the early National Reports of Climate Change in China.The present paper reviews the studies of the longterm SAT series of China,highlighting the homogenization of station observations as the key progress.The SAT series of China in early studies showed a prominent warm peak in the 1940s,mainly due to inhomogeneous records associated with site-moves of a number of stations from urban to outskirts in the early 1950s,thus leading to underestimates of the centennial warming trend.Parts of China were relatively warm around the 1940s but with differentphase interdecadal variations,while some parts were even relatively cool.This fact is supported by proxy data and could partly be explained by interdecadal changes in large-scale circulation.The effect of urbanization should have a minor contribution to the observed warming in China,although the estimates of such contributions for individual urban stations remain controversial.Further studies relevant to the present topic are discussed.

发文机构：Key Laboratory of Regional Climate–Environment for Temperate East Asia University of Chinese Academy of Sciences National Climate Center Chinese Academy of Meteorological Sciences National Meteorological Information Center

关键词：globalWARMINGregionalclimateVARIABILITYcentennialtrendINTERDECADALVARIATIONSeffectofURBANIZATION

分类号： P46[天文地球—大气科学及气象学]