X img

官方微信

img

群号:冰川冻土交流群

QQ群:218834310

高级检索
作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2021, Vol. 43 ›› Issue (5): 1446-1457.doi: 10.7522/j.issn.1000-0240.2021.0089

• 冰冻圈与全球变化 • 上一篇    下一篇

我国新疆北部地区雪面雨日数时空变化特征分析

卢新玉1(),陈仁升2(),刘艳1,王秀琴3,宋志国4   

  1. 1.中国气象局 乌鲁木齐沙漠气象研究所,新疆 乌鲁木齐 830002
    2.中国科学院 西北生态环境资源研究院,甘肃 兰州 730000
    3.新疆维吾尔自治区气象信息中心,新疆 乌鲁木齐 830002
    4.山东省沂水县气象局,山东 沂水 276400
  • 收稿日期:2021-07-03 修回日期:2021-09-20 出版日期:2021-10-31 发布日期:2021-12-09
  • 通讯作者: 陈仁升 E-mail:luxy@idm.cn;crs2008@lzb.ac.cn
  • 作者简介:卢新玉,副研究员,主要从事积雪水文研究. E-mail: luxy@idm.cn
  • 基金资助:
    新疆维吾尔自治区自然基金项目(2020D01A137);国家重点研发计划项目“干旱区融雪洪水灾害监测预报和防控关键技术研究与示范”(2019YFC1510500);天山青年计划(2019Q039)

Spatiotemporal variation of rain-on-snow days in northern Xinjiang

Xinyu LU1(),Rensheng CHEN2(),Yan LIU1,Xiuqin WANG3,Zhiguo SONG4   

  1. 1.Institute of Desert Meteorology,China Meteorological Administration,Urumqi 830002,China
    2.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    3.Xinjiang Meteorological Information Center,Urumqi 830002,China
    4.Yishui meteorological bureau of Shandong,Yishui 276400,Shandong,China
  • Received:2021-07-03 Revised:2021-09-20 Online:2021-10-31 Published:2021-12-09
  • Contact: Rensheng CHEN E-mail:luxy@idm.cn;crs2008@lzb.ac.cn

摘要:

在全球变化背景下,雪面雨发生频次增加,致灾风险加大,认识雪面雨时空变化特征对于防洪减灾具有重要意义。基于我国新疆北部地区42个国家气象站1960—2015年逐日气温、降水、雪深、天气现象等气象观测数据,制定降水类型、地面状态、雪深等共同判定雪面雨事件的参数化方案,进而分析新疆北部地区雪面雨日数时空变化特征及其与气温、海拔的关系。结果表明:近56 a来新疆北部地区雪面雨日数以0.3 d·(10a)-1的速率呈缓慢增加趋势;空间分布上,新疆北部地区雪面雨主要集中于塔城北部、伊犁河谷、乌鲁木齐河源地区,其中塔城裕民县最多,年平均雪面雨日数12.2 d;相关分析显示雪面雨日数及雪面雨量均与海拔呈显著正相关。该研究有望提升对新疆干旱区雪面雨事件这一诱发雨雪混合洪水重要现象的科学认识,为新疆地区致灾洪水过程分析以及洪水监测预警提供参考。

关键词: 雪面雨, 降雨, 积雪, 时空变化, 新疆北部

Abstract:

Many extreme floods are caused by the rain-on-snow (ROS) events in the world. Under global warming, the rain-on-snow (ROS) event and its flood have increased and would increase in the future. It is of great significance to understand the spatiotemporal variation of ROS for flood control and disaster reduction. Based on the daily temperature, precipitation, snow depth, weather phenomenon and other meteorological observation data of 42 national meteorological stations in northern Xinjiang from 1960 to 2015, the parameterization scheme of rain-on-snow (ROS) events was determined by using precipitation type, ground state and snow depth records. On this basis, the spatiotemporal variation characteristics of ROS days and their relationship with temperature and elevation in northern Xinjiang were analyzed. The results show that during the last 56 years, the rate of 0.3 d·(10a)-1 of ROS days in northern Xinjiang has been increasing slowly; In terms of spatial distribution, ROS in northern Xinjiang is mainly concentrated in the north of Tacheng, Ili River Valley and the headwaters of Urumqi River. Yumin county has the most ROS events, with an annual ROS day of 12.2 d; Correlation analysis showed there was a significant positive correlation between the number of ROS days, ROS amount and altitude. This study is expected to improve the scientific understanding of the snow surface rain event, which is an important phenomenon of inducing rain and snow mixed flood in arid area of Xinjiang, and provide a reference for the analysis of disaster causing flood process and flood monitoring and early warning in our region.

Key words: rain-on-snow (ROS), rainfall, snow cover, spatiotemporal variation, northern Xinjiang

中图分类号: 

  • P468.0+25