气候变化研究进展2017，Vol.13Issue(3)：213-222,10.DOI:10.12006/j.issn.1673-1719.2016.132
1951—2015年乌鲁木齐市极端升温过程气候变化特征
The Change Characteristics of Extreme Temperature-RisingProcess in Urumqi City During 1951-2015
摘要
Abstract
Based on the daily maximum temperature data at Urumqi meteorological station, we established the database of temperature-rising process of Urumqi city during the period of January 11951 to December 312015.A comprehensive strength index IZ was defined in terms of the intensity values and ranks of the temperature-rising process, and sorted the extreme temperature-rising processes in Urumqi according to IZ index percentile ranking.Thus, the change characteristics of the process sustained days, frequency and intensity were analyzed. The results showed that there were a total of 567 extreme temperature-rising processes in Urumqi during 1951-2015, and the average was 8.7 times per year. The maximum strength of the extreme temperature-rising process occurred in March 14-16, 2009. The average of sustained days was 3.25 d, and the number of sustained 2 d process was the most, accounting for 23.1% of the 567 extreme temperature-rising processes in Urumqi. The longest sustained days of extreme temperature-rising process was in April (5.37 d), and the shortest was in January (2.29 d) and December (2.37 d) during 1951-2015. The annual sustained days of extreme temperature-rising processes decreased slightly, and the linear trend was not significant in the past 65 years. The extreme temperature-rising process was mainly concentrated in the period of December?April, accounting for 64.3%, and the least was only 1.9% in July of Urumqi. In the past 65 years, the frequency of extreme temperature-rising process was not significantly increased linearly, more than mean frequency after 1980s and increased in the beginning of 2010s of the inter-annual variability of frequency. Both the intensity and its inter-annual variability of extreme temperaturerising process were more than the average in 1950s and 1960s in Urumqi. The intensity gradually was weakened,and the inter-annual variability was decreased from 1970s to 2010s. Both the intensity and its inter-annual variability were increased by the beginning of 21 century.关键词
极端升温过程/发生频数/强度/变化特征/乌鲁木齐市Key words
extreme temperature-rising process/frequency/intensity/change characteristics/Urumqi city引用本文复制引用
毛炜峄,姚俊强,曹兴..1951—2015年乌鲁木齐市极端升温过程气候变化特征[J].气候变化研究进展,2017,13(3):213-222,10.基金项目
中央级公益性科研院所基本科研业务费专项资金项目(IDM201502)"新疆区域降温过程及极端低温事件的年、季定量评估研究及应用" （IDM201502）
