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

气象与环境学报 ›› 2013, Vol. 29 ›› Issue (1): 40-46.doi:

• 论文 • 上一篇    下一篇

ENSO事件对川西高原区的气候影响

郑浩  许武成  孙高敏   

  1. 西华师范大学国土资源学院，四川 南充637009
  • 出版日期:2013-02-28 发布日期:2013-02-28

The effect of ENSO events on climate in the western Sichuan Plateau area

ZHENG Hao XU Wu-cheng SUN Gao-min   

  1. College of Land and Resources, China West Normal University, Nanchong 637009, China
  • Online:2013-02-28 Published:2013-02-28

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摘要： 根据1951—2010年川西高原区7个气象站降水资料和气温资料以及60 a间发生的厄尔尼诺(El Ni?o)/拉尼娜(La Ni?a)事件，分析降水量、气温与El Ni?o /La Ni?a事件之间的关系，研究El Ni?o/La Ni?a事件对川西高原区气候的影响。结果表明：1951年以来川西高原区年降水量变化不大，呈现微弱的增加趋势，El Ni?o/La Ni?a 事件的发生对川西高原区年平均降水量有影响，El Ni?o事件影响下的年平均降水量减少，La Ni?a事件影响下的年平均降水量增加；El Ni?o年降水量低于正常年降水量39.14 mm，拉尼娜年降水量高于正常年降水量22.56 mm。1951年以来川西高原区年平均气温呈现微弱的波动上升趋势，川西高原区年平均气温与ENSO事件等级之间的相关性不显著。

关键词: ENSO, 降水量, 温度, 川西高原区

Abstract: Based on the precipitation and temperature data from seven meteorological stations in the western Sichuan Plateau area and the data of El Nino/La Nina events from 1951 to 2010, the relationship between precipitation, temperature and El Nino /La Nina events was analyzed. The effect of El Nino/La Nina events on the climate in the western Sichuan Plateau area was studied. The results indicate that the annual precipitation in the western Sichuan Plateau area changes weakly since 1951, and it has a weak increasing trend. El Nino/La Nina events have impact on the annual average precipitation. The annual average precipitation decreases because of the impact of El Nino events, while it increases because of the impact of La Nina events. The annual precipitation is 39.14 mm less in El Nino years than in the normal year, while it is 22.56 mm higher in La Nina year than in the normal year. The average of annual temperature fluctuates weakly and has an increasing trend in the western Sichuan Plateau area since 1951 .The correlation between the levels of ENSO events and the average annual temperature in the western Sichuan Plateau area is not significant since 1951.

Key words: ENSO, Precipitation, Temperature, The western Sichuan Plateau area