热带气象学报2011，Vol.27Issue(4)：585-593,9.DOI:10.3969/j.issn.1004-4965.2011.04.016
重庆极端高温指标的对比及其与区域性增暖的关系
CLASSIFICATION OF EXTREME HIGH TEMPERATURE INDICES AND THEIR RELATIONSHIP WITH REGIONAL WARMING IN CHONGQING
摘要
Abstract
Based on the daily temperature observations in Chongqing during 1961-2008, systematic classification is carried out to establish indices on extreme high temperature, like extreme value, absolute and relative threshold values, etc, and to investigate variations and indicative difference of these indices and their relationship with regional warming. The results show that there are differences for different indices to indicate extreme temperature. Impact of extreme high temperature can be intuitively described by indices such as annual maximum temperature, number of days with temperature higher than 35 ℃, etc, which are commonly used in operation services as criteria to identify high temperature. However, the indices defined by relative threshold values, HWDI and WSDI, have significant difference from those by absolute threshold values in indicating high temperature events since the HWDI and WSDI are limited by six day succession in their definition. Since these indices (HWDI, WSDI and TX90p) can occur in every season round a year, they are more consistent with variations of annual mean and maximum temperature, in particular for the TX90p which has no limitation for six day succession, and is more correlated with regional warming. Chongqing is a area with high frequency of extreme high temperature. Results from comparative analyses on high temperature indices will provide good reference to those involved in scientific researches and operational services, and at the same time become very important in monitoring, detecting and assessing impacts by extreme high temperature.关键词
极端高温/指标/重庆Key words
extreme high temperature/ indices/ Chongqing分类
天文与地球科学引用本文复制引用
张天宇,程炳岩,唐红玉,李永华..重庆极端高温指标的对比及其与区域性增暖的关系[J].热带气象学报,2011,27(4):585-593,9.基金项目
重庆市气象局青年基金项目(QNJJ-201108)“重庆极端高温指标对比分析研究”资助 （QNJJ-201108）
