| 摘要: |
| 选取遵义市13个国家站2010—2019年逐日日最低气温资料，将降温过程分为弱降温、较强降温、强降温、寒潮4个等级，分析了各级降温过程的频次、持续日数、降温幅度、过程最低气温、空间分布等特征。分析表明：① 10 a来遵义市共发生降温过程11 915站次，平均每站每年91.7次，以降温幅度在6 ℃以下的弱降温为主。②近10 a遵义市平均过程降温幅度为3 ℃，平均过程最低日低温11.9 ℃，持续时间在1~10 d之间，寒潮、强降温、较强降温持续天数以2~3 d为主，弱降温过程大多持续1 d。③不同等级降温频次空间分布与地形相关，较强降温以上的降温过程主要集中出现在遵义市娄山以南地区，弱降温主要出现在娄山山区及其西北部。④寒潮、强降温、较强降温主要出现在春秋季，寒潮主要出现在3月份，而弱降温在夏季发生频次较高，4月份是遵义市降温最剧烈的时候。 |
| 关键词: 降温频次；持续日数；降温幅度；过程最低气温 |
| DOI： |
| 投稿时间：2020-12-02 |
| 基金项目:贵州省气象局科研项目(黔气科登[2020]12-01号)：遵义市近十年降温频次及强度特征分析 |
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| Analysis of Frequency and Intensity of Cooling Process in Zunyi City in the Past Ten Years |
| LI Xia,YANG Yi,TIAN Duan,WU Zhengmin,XIAO Lei |
| (Zunyi Meteorological Bureau of Guizhou Province, Zunyi 563000 , China) |
| Abstract: |
| Based on the daily minimum temperature data of 13 national stations in Zunyi City from 2010 to 2019, and the cooling process were divided into four levels: weak cooling, stronger cooling, strong cooling, and cold wave, and the frequency, duration of days, cooling range, process minimum temperature, spatial distribution and other characteristics of the cooling process at all levels were analyzed. The results show that: ①In the past ten years, there have been 11,915 stations of cooling process in Zunyi City, with an average of 91.7 times per station per year, mainly with the weak cooling whose cooling range below 6 ℃. ②In the past ten years,for the cooling process in Zunyi City, the average process cooling range was 3 ℃, the average process minimum temperature was 11.9 ℃,and the duration was between 1-10 days. The duration of cold wave, strong cooling, and stronger cooling was mainly 2-3 days, The weak cooling process mostly lasted 1 day.③The spatial distribution of different levels of cooling frequency was related to the terrain. The cooling process above the stronger cooling was mainly concentrated in the area south of Loushan in our city, and the weak cooling mainly occurred in the Loushan mountain and its northwest. ④The cold wave, strong cooling, and stronger cooling mainly occured in spring and autumn. The cold wave mainly occurred in March, while the weak cooling occured more frequently in summer,April was the most severe time for the temperature drop in Zunyi City. |
| Key words: cooling frequency；duration days；cooling range；process minimum temperature |
