Correcting urban bias in large-scale temperature records in China, 1980-2009

被引：35

作者：

Wang, J. ^{[1
]}

Tett, S. F. B. ^{[2
,3
]}

Yan, Z. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Atmospher Phys, Key Lab Reg Climate Environm Temperate East Asia, Beijing, Peoples R China

[2] Univ Edinburgh, Natl Ctr Atmospher Sci Climate, Edinburgh, Midlothian, Scotland

[3] Univ Edinburgh, Sch GeoSci, Edinburgh, Midlothian, Scotland

来源：

GEOPHYSICAL RESEARCH LETTERS | 2017年 / 44卷 / 01期

基金：

中国国家自然科学基金;

关键词：

urban bias; land surface air temperature; China; atmospheric reanalysis; SURFACE AIR-TEMPERATURE; UNITED-STATES; HEAT ISLANDS; TIME-SERIES; URBANIZATION; CLIMATE; IMPACT; TRENDS;

D O I：

10.1002/2016GL071524

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Trends in urban fraction around meteorological station were used to quantify the relationship between urban growth and local urban warming rate in temperature records in China. Urban warming rates were estimated by comparing observed temperature trends with those derived from ERA-Interim reanalysis data. With urban expansion surrounding observing stations, daily minimum temperatures were enhanced, and daily maximum temperatures were slightly reduced. On average, a change in urban fraction from 0% to 100% induces additional warming in daily minimum temperature of +1.70.3 degrees C; daily maximum temperature changes due to urbanization are -0.40.2 degrees C. Based on this, the regional area-weighted average trend of urban-related warming in daily minimum (mean) temperature in eastern China was estimated to be +0.0420.007 (+0.0170.003)degrees C decade(-1), representing about 9% (4%) of overall warming trend and reducing the diurnal temperature range by -0.05 degrees Cdecade(-1). No significant relationship was found between background temperature anomalies and the strength of urban warming.

引用

页码：401 / 408

页数：8

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