| 松花江流域初夏降水分布型的环流特征及差异 |
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| 引用本文： | 娄德君,王冀,张雪梅,刘玉莲,周显伟.松花江流域初夏降水分布型的环流特征及差异[J].气象与环境学报,2019,35(4):63-68. |
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| 作者姓名： | 娄德君 王冀 张雪梅 刘玉莲 周显伟 |
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| 作者单位： | 齐齐哈尔市气象局,黑龙江 齐齐哈尔,161006;北京市气候中心,北京,100089;哈尔滨市气象台,黑龙江 哈尔滨,150028;黑龙江省气候中心,黑龙江 哈尔滨,150030 |
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| 基金项目： | 中央引导地方科技发展专项（ZY18C12）和中国气象局气候变化专项（CCSF201842）共同资助。 |
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| 摘 要： | 利用1961-2017年松花江流域31个气象站初夏降水资料、NCEP/NCAR再分析资料，采用多种统计方法，讨论了松花江流域初夏降水时空分布及影响环流特征。结果表明：松花江流域初夏降水具有全流域一致型、西北-东南反位相型和东北-西南反位相型3个主要分布模态。影响3个分布型的主要环流特征分别为贝加尔湖以东低值系统-鄂霍茨克海阻塞高压（西南低-东北高）、乌拉尔山脊-西西伯利亚槽-外兴安岭脊（两脊一槽型）、渤海/华北低值系统及其东北部高压，东部局地高压或阻塞形势对松花江流域初夏降水的3个模态起到非常重要的作用。东亚-太平洋型和极地-欧亚型是对第一模态降水分布起重要作用的遥相关型。
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| 关 键 词： | 松花江流域 初夏降水 环流特征 |
| 收稿时间： | 2019-01-11 |
Circulation characteristics and differences of distribution modes of the early summer precipitation in the Songhua River basin |
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| LOU De-jun,WANG Ji,ZHANG Xue-mei,LIU Yu-lian,ZHOU Xian-wei.Circulation characteristics and differences of distribution modes of the early summer precipitation in the Songhua River basin[J].Journal of Meteorology and Environment,2019,35(4):63-68. |
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| Authors: | LOU De-jun WANG Ji ZHANG Xue-mei LIU Yu-lian ZHOU Xian-wei |
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| Institution: | 1. Qiqihar Meteorological Service, Qiqihar 161006, China;2. Beijing Climate Center, Beijing 100089, China;3. Harbin Meteorological Observatory, Harbin 150028, China;4. Heilongjiang Climate Center, Harbin 150030, China |
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| Abstract: | Based on the early summer precipitation data from 31 meteorological stations in the Songhua River Basin and the NCEP/NCAR (National Centers for Environmental Prediction/National Center for Atmospheric Research) reanalysis data from 1961 to 2017,the temporal and spatial distribution of precipitation in the Songhua River Basin and the influence characteristics of circulation were discussed by statistical methods.Results show that there are mainly three modes of the precipitation in the Songhua River Basin:the consistent rainfall mode in the whole basin,the anti-phase rainfall modes from northwest to southeast and from northeast to southwest.The main circulation characteristics affecting the three distribution modes are the low pressure at the east of Lake Baikal and Okhotsk blocking high (southwest low-northeast high),Ural ridge-West Siberian trough-Stanovoy Range ridge (a two-ridges-and-one-trough type),and the Bohai Sea and North China low pressure and the high in the northeast.The local high pressure or blocking situation plays a very important role in the formation of the three modes of precipitation in the early summer over the Songhua River Basin.The East Asia-Pacific and Polar-Eurasian types are teleconnections that play an important role in the distribution of the first mode precipitation. |
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| Keywords: | Songhua River basin Early summer precipitation Circulation characteristics |
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