厄尔尼诺/拉尼娜事件对陕北地区近57a气候的影响
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教育部人文社会科学基地项目“西北典型地区水环境研究”(05JJD770014);国家自然科学基金项目“关中平原地区1000年来渭河洪水变化研究”(40571004)


Climate Impacts of El Nino/La Nina Events on Northern Shaanxi Province in the Last 57 Years
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    摘要:

    根据陕北地区近57a的气象资料, 对榆林、绥德、延安3个地区的气象因子、气象灾害进行了研究。结果表明, 榆林、绥德、延安地区暖事件年降水减少, 平均气温增加, 与正常年份相比降水量分别减少61.59, 76.10, 73.33mm, 平均气温分别增加0.23, 0.13, 0.11℃; 冷事件年降水减少, 平均气温降低, 与正常年份相比降水量分别减少15.68, 25.61, 41.89mm, 平均气温分别降低0.22, 0.15, 0.24℃。 ENSO事件年易发生干旱灾害, 且厄尔尼诺年发生干旱气象灾害的概率大于拉尼娜年灾害发生的概率。

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    Based on the meteorological data of 57years in Yulin, Suide, and Yan′an of North Shaanxi Prov-ince areas, the meteorological factors and disasters were studied. Results indicate that the annual precipitati-on was decreased in warm events happened years and the average temperature was increased in warm events years. Compared with normal years the precipitation was decreased at 61. 59, 7 6. 10, 73. 33mm and average temperature was increased at 0.23, 0.13, 0.11℃. The precipitation and average temperature was decreased in cold events happened years. Compared with normal years the precipitation was decreased at 15.68, 25.61, 41.89mm and average temperature was increased at 0.22, 0.15, 0.24℃. Drought disaster was prone hap-pened in ENSO events years. The probability of drought meteorological disasters was greater than the proba-bility of La Nina years.

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魏君平,赵景波.厄尔尼诺/拉尼娜事件对陕北地区近57a气候的影响[J].水土保持通报,2012,(5):210-214

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  • 收稿日期:2011-07-05
  • 最后修改日期:2012-05-03
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  • 在线发布日期: 2014-11-25
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