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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (35): 269-274.

所属专题： 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

中国东北地区春雨开始期变化特征研究

张脉惠 王传辉 江春 彭爱国   

  • 收稿日期:2012-06-28 修回日期:2012-07-05 出版日期:2012-12-15 发布日期:2012-12-15
  • 基金资助:

    东北冷涡背景下强降水的监测和预报技术研究

Characteristics of Variation of Beginning Period of the Spring Rainy Season in Northeast Area of China

  • Received:2012-06-28 Revised:2012-07-05 Online:2012-12-15 Published:2012-12-15

PDF (PC)

684

摘要：

为了研究中国东北地区春雨开始期的变化特征，揭示影响其变化的主要因素及影响机理，利用近50年（1959—2008年）东北地区（包括黑龙江、吉林、辽宁和内蒙古东北部）地面测站降水资料，给出了东北地区春雨开始期的划分标准及其推进特征，并分析了东北地区春雨开始期的时空分布特征。结果表明，东北地区春雨平均在5月下旬开始，由东南向西北推进。当东北地区春雨开始偏早（晚）时，东北地区5月的降水偏多（少）；主要以全区一致型，南北反相型和东南向西北“-+-”的空间分布特征；东北地区春雨开始期具有显著的年际变化，存在准2~3年的年际振荡特征。此外，当前期12—4月中国东部沿海海温偏高（低）时，东北地区春雨开始期偏早（晚）。

关键词: 块茎, 块茎

Abstract:

In order to analyze the characteristics of variation of beginning period of the spring rainy season in northeast area of China, reveal the main factors of affecting the beginning of period, and elaborate the mechanism between them. Based on the precipitation data of ground station and sst (sea surface temperature) data over 1959-2008 years in northeast China, the author gave the standards and promote features of the beginning period of the rainy season in northeast China, and the temporal and spatial distribution was analyzed. The results showed that the average date of the rainy season began in late May, advancing from the southeast to the northwest, and there was a significant inverse relationship with precipitation in the northeast in May; beginning period of the rainy season in northeast China had significant inter-annual change, there were quasi-2-3 years inter-annual oscillations and 32-34 years decadal cycle characteristics; mainly in the region the same type, northeast and southwest reverse type, the southeast to the northwest showed ‘-+-’ characteristics of the spatial distribution. In addition, there was a significant correlation between the beginning period of the rainy season in northeast China’s and the sst of early December to April in China’s eastern.