Correcting urban bias in large‐scale temperature records in China, 1980–2009
作者： J Wang , SFB Tett , Z Yan , None
DOI: 10.1002/2016GL071524
关键词: Climatology 、 Scale (map) 、 Environmental science 、 China 、 Urban bias 、 Daily maximum temperature 、 Urban warming 、 Diurnal temperature variation 、 Urban expansion 、 Urbanization
摘要: Trends in urban fraction around meteorological station were used to quantify the relationship between growth and local warming rate temperature records China. Urban rates estimated by comparing observed trends with those derived from ERA-Interim reanalysis data. With expansion surrounding observing stations, daily minimum temperatures enhanced, maximum slightly reduced. On average, a change 0% 100% induces additional of +1.7 ± 0.3 °C; changes due urbanization are -0.4 ± 0.2 °C. Based on this, regional area-weighted average trend urban-related (mean) eastern China was be +0.042 ± 0.007 (+0.017 ± 0.003) °C decade-1, representing about 9% (4%) overall reducing diurnal range -0.05 °C decade-1. No significant found background anomalies strength warming.
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