沙漠与绿洲气象2017，Vol.11Issue(2)：34-42,9.DOI:10.12057/j.issn.1002-0799.2017.02.006
甘肃省1967—2008年气温和降水时空变化
Spatiotemporal Variability of Temperature and Precipitation during 1967-2008 in Gansu Province
摘要
Abstract
Based on the data of temperature and precipitation from 27 meteorological stations in Gansu province, spatiotemporal features of regional climate change during 1967-2008 were analyzed by the methods of trend coefficient, inverse distance weighted interpolation and wavelet analysis. Study results indicated that temperature exhibited a rising trend and precipitation exhibited an opposite trend over the whole Gansu province during the past 42 years. Temperature in northwestern Gansu increased faster than that in southeastern region. Particularly, high linear slopes of rising trend in temperature appeared in the central part of Hexi Corridor. The primary oscillation periods of approximately 12-15 years and 6 years occurred in the temperature series of the whole Gansu province as well as in northwestern and southeastern regions. The temperature variations over this region displayed closely connections with the events of ENSO and La Nina. Precipitation in northwestern Gansu increased slightly, on the contrary, precipitation in southeastern region decreased obviously. The wavelet analyses exhibited primary oscillation periods of 14 years, 7-8 years and 4 years contained in the precipitation series of the whole Gansu province and southeastern region. Approximately 12 years, 7 years and 4 years periods were found in northwestern precipitation sequence. In general, warm and wet climate conditions appeared in northwestern Gansu and opposite variation trends (warm and dry)appeared in southeastern Gansu during the several decades.关键词
气温/降水/亚洲季风区/西风带气候区/甘肃省Key words
temperature/precipitation/asian summer monsoon/westerlies/Gansu province分类
天文与地球科学引用本文复制引用
王红桃,包光,胡亚飞..甘肃省1967—2008年气温和降水时空变化[J].沙漠与绿洲气象,2017,11(2):34-42,9.基金项目
陕西省青年科技新星计划项目(2016KJXX-41) （2016KJXX-41）
陕西省自然科学基础研究计划项目(2014JQ5192) （2014JQ5192）
国家自然科学基金项目(41301101) （41301101）
黄土与第四纪地质国家重点实验室开放基金项目(SKLLQG1505,SKLLQG1302)共同资助. （SKLLQG1505,SKLLQG1302）
