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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (29): 201-207.doi: 10.11924/j.issn.1000-6850.2013-0518

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

影响东北夏季低温的主要因子及其相互关系

赵连伟 李辑 房一禾 孙秀博 张蕊   

  • 收稿日期:2013-02-28 修回日期:2013-03-18 出版日期:2013-10-15 发布日期:2013-10-15
  • 基金资助:
    东北地区夏季低温预测技术改进、集成及业务应用

Impact Factors of the Summer Low Temperature Event in the Northeast China and Their Relationship

  • Received:2013-02-28 Revised:2013-03-18 Online:2013-10-15 Published:2013-10-15

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摘要： 为了进一步研究东北夏季低温与厄尔尼诺事件间的关系,以及这种关系的演变趋势和影响制约因素。以东北地区26个测站的1951—2011年月平均的气温资料，分析东北地区夏季低温的主要影响因子。结果表明：影响东北夏季低温的因素包括：大气环流、东亚夏季风、El Nino事件、PDO以及太阳活动等。而太阳活动、El Nino事件和PDO是影响东北夏季低温的主要因素。1977年以前处于PDO冷位相期，容易发生东部型的El Nino事件，当东部型El Nino事件发生时，往往造成东北夏季低温。1978—2005年处于PDO暖位相期，容易发生中部型的El Nino事件，当中部型El Nino事件发生时，东北夏季低温趋势明显减弱。总体来看，El Nino对东北夏季低温有重要影响，但二者的关系非常复杂。几种因子相互作用，共同对东北夏季低温产生影响。

关键词: 现状, 现状

Abstract: In order to study the relationship between summer low temperature in the northeast China and El Nino, and the variation trend and influential factors of the relationship. Based on the monthly mean temperature data of 26 observational stations in the northeast China during 1951-2011, the impact factors of the summer low temperature event in the northeast China were analyzed. Results showed that: the impact factors respectively were: general atmospheric circulation, east Asian summer monsoon, El Nino, PDO and solar activity. Solar activity, El Nino and PDO were the leading impact factors. Before 1977, PDO showed cold phase, so the east pattern El Nino appeared easily. The east pattern El Nino usually led to low summer temperature in the northeast China. During 1978-2005, PDO showed warm phase, and the middle pattern El Nino took place easily, so the trend of low summer temperature event would be significantly weakened. Totally, El Nino could significantly influence the low summer temperature event in the northeast China, but there relationship was very complicated. All the impact factors influenced the low summer temperature event jointly.