title: [Spatiotemporal distribution characteristics and causes of sunny days' heat island effect in Chengdu City of Southwest China].
abstract: Based on 99 clear sky Terra satellite images of Chengdu City in 2005-2010, and by using a novel automatic extraction method of suburb temperature, i. e., each city-circle temperature jump, this paper studied the spatiotemporal variation characteristics of the urban heat island (UHI) effect in the City in 2005-2010, and analyzed the causes of the variation characteristics. In the study period, the central area of the largest and strongest UHI was in the Jinhua Town located in the southwest of Chengdu. The UHI effect had no significant spatial variation, but the range and intensity of the UHI effect tented to be decreased. The intra-annual UHI intensity and area within the ring roads showed a three-peak distribution pattern, with the peak values appeared in April, July, and October, and the intensity reached the maximum in July. The UHI intensity in Chengdu was attenuated by the decrease of air temperature and the increase of precipitation and urban vegetation cover.
authors.affiliation: Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610071, China. z_sqian@126.com
authors.forename: Shun-Qian
authors.initials: SQ
authors.lastname: Zhang
authors.forename: Chang-Yan
authors.initials: CY
authors.lastname: Zhou
mesh_terms: D002681:China; D002947:Cities; D002958:City Planning; D057232:Global Warming / Q000706:statistics & numerical data*; D006358:Hot Temperature; D011891:Rain; D017215:Satellite Communications; D062211:Spatio-Temporal Analysis; D014887:Weather