主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2016, Vol. 32 ›› Issue (2): 89-94.doi: 10.11927/j.issn.1673-503X.2016.02.012

• 论文 • 上一篇    下一篇

1980-2014年沈阳地区日照时数变化特征及影响因素

慕臣英1, 徐全辉1, 张菁1, 李石1, 宋晓巍1, 赵凤2, 张郁1, 邱美娟3   

  1. 1. 沈阳市气象局, 辽宁 沈阳 110168;
    2. 苏家屯气象局, 辽宁 沈阳 110101;
    3. 吉林省气象科学研究所, 吉林 长春 130062
  • 收稿日期:2015-06-08 修回日期:2015-08-11 出版日期:2016-04-30 发布日期:2016-04-30
  • 作者简介:慕臣英,女,1988年生,助理工程师,主要从事农业气象研究,E-mail:mucheny@126.com。
  • 基金资助:
    沈阳市农业科技攻关专项"沈阳市农业气象资源优劣等级的精细化分析"(S12-091-3-00)资助。

Characteristics of sunshine duration and its influencing factors in Shenyang from 1980 to 2014

MU Chen-ying1, XU Quan-hui1, ZHANG Jing1, LI Shi1, SONG Xiao-wei1, ZHAO Feng2, ZHANG Yu1, QIU Mei-juan3   

  1. 1. Shenyang Meteorological Service, Shenyang 110168, China;
    2. Meteorological Service in Sujiatun District of Shenyang, Shenyang 110101, China;
    3. Institute of Meteorological Science in Jilin Province, Changchun 130062, China
  • Received:2015-06-08 Revised:2015-08-11 Online:2016-04-30 Published:2016-04-30

摘要: 利用1980-2014年沈阳地区7个气象站月日照时数及年低云量、年总云量、年降水量和年降雨日数资料,采用气候倾向率法分析了沈阳地区年和季日照时数的气候变化特征,并对影响日照时数的因素进行了相关性分析。结果表明:1980-2014年沈阳地区年平均和季平均日照时数均呈减少的趋势,全市年平均日照时数每10 a减少74.5 h,2002年后年日照时数基本低于近35 a平均水平。四季日照时数每10 a减少11.8-27.1 h,减少幅度由大到小依次为夏季、秋季、春季和冬季。沈阳市日照时数空间上呈北多南少分布特征,全市各站日照时数均呈减少的趋势。年低云量、总云量、降水量和降雨日数均与年日照时数呈负相关关系,其中日照时数与低云量、总云量、降雨日数的关系更密切。

关键词: 日照时数, 气候倾向率, 相关分析

Abstract: Based on monthly sunshine duration, annual low cloud amount, annual total cloud amount, annual precipitation and number of annual precipitation days at 7 weather stations in Shenyang from 1980 to 2014, climate characteristics of annual and seasonal sunshine duration were analyzed by a climatic trend method.The correlation relationships were discussed between sunshine duration and its influencing elements.The results indicate that the annual and seasonal sunshine duration in Shenyang are in decreasing trends from 1980 to 2014.Annual mean sunshine duration in Shenyang reduces at the rate of 74.5 h per decade, and it is less than average in the recent 35 years after 2002.There is a significantly decreasing tendency in seasonal sunshine duration at the rates of 11.8-27.1 h per decade, and the order of decreasing amplitudes ranks from high to low as summer, autumn, spring and winter.Spatial distribution of annual sunshine duration in Shenyang decreases from the north to south.Sunshine duration in each weather station is in a decreasing trend.Annual sunshine duration is in a significant negative correlation with precipitation, total cloud amount, low cloud amount and number of precipitation days, especially with the latter three elements.

Key words: Sunshine duration, Climate trend rate, Correlation analysis

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