当前位置: 首页 > 文章 > 1975—2014年本溪地区暴雨日数变化趋势分析 现代农业科技 2017 (6) 210-211+217
Position: Home > Articles > Analysis on Change Trend of Rainstorm Days in Benxi Area From 1975 to 2014 Modern Agricultural Science and Technology 2017 (6) 210-211+217

1975—2014年本溪地区暴雨日数变化趋势分析

作  者:
寇思聪;谭政华;杨艳超;韩梅
单  位:
辽宁省本溪市气象局;陕西省气象服务中心
关键词:
暴雨;变化趋势;突变;暴雨日数;辽宁本溪;1975—2014年
摘  要:
利用1975—2014年本溪地区4个国家地面气象站逐日降水资料,采用线性趋势系数法、Mann-Kendall突变分析法和Morlet小波分析法对本溪地区暴雨时空分布及变化规律进行分析。结果表明:1975—2014年间,本溪地区暴雨多发于7—8月,呈现南多北少的特点,中心位于西南部的草河口和东部的桓仁;年均暴雨日数5.2 d,年均影响范围8.4站次;40年间本溪地区年均暴雨日数年代际增长显著;暴雨日数年际变化较大,呈缓慢增长趋势;经突变分析发现,1984年前后暴雨日数发生突变,目前处在显著上升期内,但由小波分析发现未来5~10年本溪地区暴雨日数可能逐渐减少。
译  名:
Analysis on Change Trend of Rainstorm Days in Benxi Area From 1975 to 2014
作  者:
KOU Si-cong;TAN Zheng-hua;YANG Yan-chao;HAN Mei;Benxi Meteorological Bureau in Liaoning Province;Shaanxi Meteorological Service Center;
关键词:
rainstorm;;change trend;;sudden change;;rainstorm days;;Benxi Liaoning;;1975-2014
摘  要:
Based on the daily precipitation data from 4 meteorological stations in Benxi area from 1975 to 2014,linear trend analysis,Mann-Kendall analysis and Morlet wavelet analysis methods were used to study the temporal and spatial distribution and change trend of rainstorm days in Benxi area. The results showed that from 1975 to 2014,the rainstorm was more likely to appeare between July and August,more in south and less in north. The rainstorm center was located at Caohekou and Huanren. The annual rainstorm days were 5.2 days,and annual influence ranges were 8.4stations. During 40 years,the decadal rainstorm days showed a significant increasing trend,the annual rainstorm days changed greatly,and increased slowly. With sudden change analysis,it was found that rainstorm days changed suddenly in 1984,rainstorm days are in rising period at present. Morlet wavelet analysis showed that rainstorm days might appear a declining period in Benxi area in the next 5-10 years.

相似文章

计量
文章访问数: 6
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊