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松花江流域夏季雨涝特征及变化
刘玉莲1, 娄德君2, 康恒元3, 孙爽1, 周贺玲4
(1.黑龙江省气候中心;2.齐齐哈尔市气象局;3.哈尔滨市气象局;4.廊坊市气象局)
The characteristics and changes of waterlogging over the Songhua River Basin in summer
Liu Yulian1, Lou Dejun2, Kang Hengyuan3, Sun Shuang1, Zhou Heling4
(1.Heilongjiang Climate Center;2.Qiqihaer Bureau of Meteorology;3.Harbin Bureau of Meteorology,Harbin;4.Langfang Meteorological Bureau)
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投稿时间:2019-02-11    修订日期:2020-02-20
中文摘要: 利用松花江流域1961-2017年月降水数据计算Z指数,分析松花江流域夏季雨涝的气候学特征和年代际变化特征,及与气候系统指数关系,得出结论:(1)松花江流域夏季干流区雨涝发生最多(30年中有12发生雨涝),其次是嫩江上游(11年),小兴安岭山地区雨涝发生最少(7年)。小兴安岭山地雨涝强度最大(平均2.1),其次第二松花江上游(1.8),张广才岭山地区(1.4)最小。(2)松花江流域6月雨涝最多发生,8月最少;平均雨涝强度8月最大,7月最小。(3)1961-2017年夏季和7月,嫩江下游雨涝减弱明显;6月小兴安岭山地区雨涝强度明显增强。(4)松花江流域夏季的雨涝事件受前期大气环流和海洋因子影响。
中文关键词: 松花江流域  夏季  雨涝  Z指数  变化
Abstract:The Z-index was calculated by using the monthly precipitation data from 1961 to 2017 over the Songhua River Basin. The climatological characteristics and inter-decadal variations of the summer rain waterlogging over the Songhua River Basin and the relationship with the climate system index were analyzed. The results are as follows: (1) Waterlogging occurred in the main stream of the Songhua River in summer (12 in 30 years), followed by the upper reaches of the Nenjiang River (11 years), and the least occurred in the Xiaoxing'an Ridge area (7 years). The Xiaoxing'an Ridge has the highest rainfall intensity (average 2.1), followed by the upstream of second Songhua River (1.8), Zhangguangcai Ridge (1.4) is the smallest. (2) The waterlogging occurred most in June in the Songhua River Basin, with the least in August; the average rain intensity was the highest in August and the smallest in July. (3) In the summer and July of 1961-2017, the waterlogging over the lower reaches of the Nenjiang River weakened significantly; in June, the intensity of waterlogging in the Xiaoxing'an Ridge increased significantly. (4) The summer waterlogging events in the Songhua River Basin are affected by atmospheric circulation and oceanic factors during the previous period.
文章编号:201902110060     中图分类号:    文献标志码:
基金项目:黑龙江省自然科学基金联合引导项目(LH2019D013),国家自然科学基金(No.41771067),中国气象局气候变化专项(CCSF201842, CCSF201910),中央引导地方科技发展专项(ZY18C12),黑龙江省气象局重点项目(HQ2019004)
引用文本:
刘玉莲,娄德君,康恒元,孙爽,周贺玲,0.[en_title][J].Meteor Mon,():-.
Liu Yulian,Lou Dejun,Kang Hengyuan,Sun Shuang,Zhou Heling,0.The characteristics and changes of waterlogging over the Songhua River Basin in summer[J].Meteor Mon,():-.