自然资源学报 ›› 2017, Vol. 32 ›› Issue (1): 101-113.doi: 10.11849/zrzyxb.20160121

• 资源评价 • 上一篇    下一篇

2013—2015年青藏高原玛多地区两次动态融雪过程及其与气温关系对比分析

周扬1,3, 徐维新2,3,*, 张娟2,3, 白爱娟4, 刘晓敬5, 徐国元2,3   

  1. 1. 甘肃省气象服务中心,兰州 730030;
    2. 青海省气象科学研究所,西宁 810001;
    3. 青海省防灾减灾重点实验室,西宁 810001;
    4. 成都信息工程大学大气科学学院,成都 610225;
    5. 北京师范大学地理学与遥感科学学院,北京 100875
  • 收稿日期:2016-02-01 出版日期:2017-01-15 发布日期:2017-01-15
  • 通讯作者: 徐维新(1973- ),男,青海乐都人,研究员级高级工程师,主要从事青藏高原生态环境监测评估及气候变化影响研究。E-mail: weixin.xu@163.com
  • 作者简介:周扬(1990- ),男,甘肃秦安人,硕士研究生,研究方向为气候变化及其影响与响应。E-mail: wxzy93166@163.com *
  • 基金资助:

    国家公益性行业(气象)科研专项(GYHY201306054); 国家自然科学基金项目(31560671); 青海省科技厅项目(2016-HZ-807)

A Comparative Analysis of the Two Dynamic Snow-melting Process and Their Relationship with Air Temperature during 2013-2015 in the Area of Maduo, Tibetan Plateau

ZHOU Yang1,3, XU Wei-xin2,3, ZHANG Juan2,3, BAI Ai-juan4, LIU Xiao-jing5, XU Guo-yuan2,3   

  1. 1. The Gansu Province Meteorological Service Center, Lanzhou 730030, China;
    2. Meteorological Institute of Qinghai Province, Xi’ning 810001, China;
    3. Key Laboratory of Disaster Prevention and Mitigation in Qinghai Province, Xi’ning 810001, China;
    4. Chengdu University of Information Technology, Chengdu 610225, China;
    5. School of Geography, Beijing Normal University, Beijing 100875, China
  • Received:2016-02-01 Online:2017-01-15 Published:2017-01-15
  • Supported by:

    Special Fund for Meteorological Research in the Public Interest, No.GYHY201306054; National Natural Science Foundation of China, No. 31560671; Fund Project of Qinghai Provincial Science and Technology Department, No. 2016-HZ-807.

摘要:

受自然条件与观测数据的限制,青藏高原腹地高时间频次积雪融雪动态过程的认识与研究十分不足。论文利用玛多地区野外观测试验场2013—2015年冬半年每30 min同步积雪深度和气温数据,对发生在2013年12月和2014年11月的积雪动态融雪过程及其与气温的关系进行了对比分析。结果表明:2013—2014年冬季融雪过程表现为先缓后急的总体特征,每日融雪过程主要发生在13:00 ~ 18:00间,而2014—2015年冬季融雪整体表现为均匀变化的过程,每日融雪过程主要发生在7:00 ~ 16:00间。雪深变化与气温存在紧密联系,玛多地区两次冬季融雪过程日最高气温都低于0 ℃,融雪发生前3 h之内的气温都将显著影响到积雪雪深变化,融雪幅度主要取决于超前半小时和当时的温度条件,雪深与气温间的线性关系与雪的厚度存在密切联系。两次融雪过程的发生与大于0 ℃变温过程关系密切,升温的变化过程可能更有利于促进积雪消融。

关键词: 气温, 青藏高原, 融雪动态, 积雪

Abstract:

The recognition and research of high-frequency dynamic snow-melting process in hinterlands of Tibet Plateau are insufficient due to the restriction of natural conditions and observation data. In this paper, every 30-minute snow depth and synchronous air temperature observation data of Maduo area in the winter of 2013-2015 are used to investigate the dynamic snow-melting processes in December, 2013 and November, 2014 and their relationship with air temperature. The results indicate that the snow melted slowly at first and then quickly during the whole snowmelt process in the winter of 2013-2014, and the snow melting process mainly occurred during 13:00-18:00. The snow melted in an uniform process during the winter of 2014-2015, and the snow melting process mainly occurred during 7:00-16:00. There is a close relationship between snow depth and air temperature. The daily maximum temperature during two winter snowmelt process were both lower than 0 ℃. The temperature three hours before the snow melting significantly affected the snow depth change. The snowmelt magnitude is mainly determined by the temperature in half an hour before the melting. There is close linear relationship between snow depth and air temperature. The two snow melting processes were close related to the variation of temperature above 0 ℃, which inferred temperature-rise process can promote snow melting.

Key words: air temperature, Qinghai-Tibetan Plateau, snow-melting dynamics, snow cover

中图分类号: 

  • P426.63+3