当前位置: 首页 > 文章 > 祁连山地区日照时数气候变化特征 安徽农业科学 2017,45 (1) 178-180
Position: Home > Articles > Climate Change Characteristics of Sunshine Hours in Qilian Mountains Area Journal of Anhui Agricultural Sciences 2017,45 (1) 178-180

祁连山地区日照时数气候变化特征

作  者:
李全平;高君元;朱宝文
单  位:
青海省海晏县气象局;青海省西宁市气象台
关键词:
日照时数;变化特征;祁连山地区
摘  要:
利用祁连山中部腹地门源、祁连、托勒、野牛沟4站1961—2013年逐月日照时数,采用线性倾向估计、滑动平均、Mann-Kendall检验等方法,分析近53年祁连山地区日照时数变化特征及影响因子。结果表明,53年来祁连山地区年日照时数呈减少趋势,减少幅度为14.35 h/10 a,最高值与最低值的差值为316.8 h。20世纪70年代末—90年代初期为日照时数偏多的年份,21世纪以来年日照时数偏少。5月份年内日照时间最长,2月份年内日照时间最短。光照时间的长短受海拔、纬度及太阳高度角的影响最大。连阴雨天气对日照时数影响最为明显。
译  名:
Climate Change Characteristics of Sunshine Hours in Qilian Mountains Area
作  者:
LI Quan-ping;GAO Jun-yuan;ZHU Bao-wen;Haiyan County Meteorological Bureau;Xining Meteorological Station;
关键词:
Sunshine hours;;Variation features;;Qilian Mountains area
摘  要:
By using monthly sunshine hours of Menyuan,Qilian,Tuole,Yeniugou in central hinterland of Qianlian Mountains area during 1961- 2013,adopting methods of linear tendency estimation,moving average,Mann-Kendall test,the variation features of sunshine hours and influential factors were analyzed. The sunshine hours of 53 years in Qilian Mountains area showed a decreasing trend with an amplitude of14. 35 h /10 a,the difference between the highest and lowest value was 316. 8 h. From the end of 1970 s to the early 1990 s,sunshine hours in Qilian Mountains area was more than that of 21 stCentury. May was the longest month in sunshine hours during the year while Feb. was the shortest. The duration of illumination is influenced significantly by altitude,latitude and solar altitude. The effect of continuous rainy weather on sunshine hours is the most obvious.

相似文章

计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊