Analysis of Spatio-temporal Variation Characteristics of High-temperature Weather in Qianxinan Prefecture
Under the current climate background,high-temperature and heat wave events in the southwest of Guizhou Province have become more and more frequent.In order to reveal the spatial and temporal distribution of high-temperature weather in Qianxinan Prefecture and reduce the losses and adverse effects of high-temperature weather on agriculture,ecology and other aspects,this paper analyzes the spatio-temporal distribution characteristics of high-temperature weather in Qianxinan Prefecture by using daily mean temperature and maximum temperature data from 8 national meteorological observation stations and 208 regional meteorological observation stations from 1961 to 2022.The results show that:(1)The high temperature weather in Qianxinan Prefecture is mainly distributed in Ceheng and Wangmo,having obvious regional characteristics in spatial distribution.At the same time,the average temperature,high temperature days and extreme maximum temperature in Qianxinan Prefecture all show the distribution characteristics of high in the southeast and low in the northwest.(2)High temperature weather in Qianxinan Prefecture mainly occurs in spring and summer(April-August),with April and May being the hottest.The large-scope high temperatures in Qianxinan Prefecture mainly appear in middle to late May,mid-July and August,of which high temperature in August is most concentrated and longest,lasting for as long as one month at least with daily maximum temperature mainly concentrated in the period from 15:00 to 17:00.(3)In recent 62 years,the average temperature and the days of high temperature each year in Qianxinan Prefecture have been in a significant increase trend.Generally speaking,the high-temperature weather in Qianxinan Prefecture has the characteristics of long duration,uneven regional distribution,and concentrated areas of frequent occurrence of high temperature.Besides,temperature tends to gradually decline with the rising altitude,and the frequent high-temperature days are closely related to the tropical climate zone in South Asia.
Qianxinan Prefecturehigh temperature weathertemporal and spatial distributionhigh temperature daysfeature analysis
NETL
NSTL
万方数据
