摘要
利用浙江省72个气象观测站1951-2013年的日最高气温资料,对浙江省不同级别的高温天气进行统计分析,发现：（1）浙江省极端最高气温为44.1℃,高温分布具有明显的地域性,总体为西多东少、内陆多沿海少.高温高发区位于丽水地区、金华地区、衢州地区和杭州地区西南部;浙江省高温年平均日数61.7d,最多的为2005 年,出现86 d,最少为1954 年,只出现34d;高温在3~10月均有可能出现,以7月最多,占高温总日数的38.7%,其次是8月,占34.8%;高温极端最早出现日期为3月14日,极端最晚结束日期为10月4日.（2）浙江省危害性高温高发区与高温高发区接近;危害性高温年平均日数32.6d,最多的为1971年,出现69 d,最少为1999 年,只出现4d;危害性高温极端最早出现日期为5月3日,极端最晚结束日期为10月1日.（3）浙江省酷热高温（强危害性高温）高发区位于杭州的西南部和丽水的中东部;酷热高温年平均日数4.4d,最多的为2003 年,出现26d,最少的年份无酷热高温出现.酷热高温极端最早出现日期为7月3日,极端最晚结束日期为9月8日.（4）各级别的年高温日小波分析显示,浙江省年高温日存在2-3a、6-7a、23a、36a左右的周期振荡信号,危害性高温日、酷热高温日存在4a、10a、15a、23a、36a左右的周期振荡信号,中、短期周期相对没有长周期稳定,未来几年,浙江省高温、危害性高温、酷热高温均处于23a、36a左右振荡周期中的减弱期.
Based on data of high temperature during the period 1951-2013 in Zhejiang Province, statistical analysis was carried out on the different levels of the hot weather in Zhejiang Province. Results show that: (1)Zhejiang extreme maximum temperature is 44.1 ℃. High temperature distribution has obvious regionality, the high incidence of high temperature is in Lishui, Jinhua, Quzhou and Hangzhou southwest region. Annual average days of high temperature 61.7 d, the most for the 2005, 86d, the least for the 1954, only 34d. High temperature in 3-10 month likely, in July the most, accounting for 38.7%of the total days high temperature, followed by August, accounting for 34.8%. Extreme earliest date of high temperature is on March 14, extreme end date will be on October 4 at the latest. (2)The high incidence of harmful high temperature is similar to the high incidence of high temperature. Annual average days of harmful high temperature 32.6 d, the most for the 1971, 69d, the least for the 1999, only 4d. Extreme earliest date of harmful high temperature is on May 3, extreme end date will be on October 1 at the latest. (3) The high incidence of Scorching high temperature is located in the southwest of Hangzhou and middle east of Lishui. Scorching high temperature averages 4.4d, up to 2003, 26d, at least the year without scorching temperatures appear. Extreme earliest date for July 3, extreme end date for the latest on September 8th. (4)Wavelet analysis shows that there is 2 to 3 years, 6 to 7 years, 23 years, 36 years periodic oscillation signal in Zhejiang province high temperature days. There is 4 years, 10 years, 15 years, 23 years, 36 years periodic oscillation signal in harmful high temperature days and scorching high temperature. In the next few years, high temperature, harmful high temperature and scorching high temperature is in the weakening stage of 23 years, 36 years periodic oscillation.
出处
《科技通报》
北大核心
2016年第1期59-64,共6页
Bulletin of Science and Technology
基金
中国气象局预报员专项(CMAYBY2014-027)
浙江省青年项目(2013QN01)共同资助
关键词
高温
危害性高温
酷热高温
小波分析
high temperature
harmful high temperature
scorching high temperature
wavelet analysis
