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冰川冻土 ›› 2015, Vol. 37 ›› Issue (5): 1168-1177.doi: 10.7522/j.isnn.1000-0240.2015.0131

• 冰冻圈与全球变化 • 上一篇    下一篇

2011-2013年乌鲁木齐城郊冬季积雪深度与密度空间分布特征

李小兰1 2, 姜逢清1, 王少平1 2, 王蕾1 2, 穆叶赛尔·吐地1 2, 张兆永1 2, 张登清1 2   

  1. 1. 中国科学院 新疆生态与地理研究所, 新疆 乌鲁木齐 830011;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2015-05-09 修回日期:2015-07-14 出版日期:2015-10-25 发布日期:2016-03-28
  • 通讯作者: 姜逢清,E-mail:jiangfq@ms.xjb.ac.cn. E-mail:jiangfq@ms.xjb.ac.cn
  • 作者简介:李小兰(1988-),女,四川自贡人,2012年毕业于西华师范大学,现为中国科学院新疆生态与地理研究所在读硕士研究生,主要从事城市大气与环境污染研究.E-mail:lixiaolan8823@163.com
  • 基金资助:
    国家自然科学基金项目(41171378)资助

Spatial distribution of winter snow cover depth and density in Ürümqi City during 2011-2013

LI Xiaolan1 2, JIANG Fengqing1, WANG Shaoping1 2, WANG Lei1 2, Muyesser Turdi1 2, ZHANG Zhaoyong1 2, ZHANG Dengqing1 2   

  1. 1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi 830011, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2015-05-09 Revised:2015-07-14 Online:2015-10-25 Published:2016-03-28

摘要: 利用2011-2013年冬季4次地面实测乌鲁木齐城-郊积雪深度与密度数据,应用普通克里格空间插值方法,分析了乌鲁木齐城-郊冬季积雪深度与密度从2011年12月下旬-2012年2月下旬及2012年1月中旬和2013年同期的时空分布特征.结果表明:乌鲁木齐城-郊冬季积雪深度与密度存在显著地区域分布差异及变化特征.整个冬季位于城东北部的米东石化工业园区积雪均较深,尤其12月和2月,在主城区内部又存在不同下垫面下积雪较多的区域.从12月下旬-次年2月下旬,积雪逐渐累积,且积雪深度比密度具有更大的空间变化幅度.除12月下旬大部分主城区雪密度比郊区大之外,1月中旬、2月下旬主城区雪密度均比城东和城东北方向低.2013年1月中旬积雪与2012年同期相比,平均积雪量明显偏厚,约31 cm,但雪密度变化范围不大且深度与密度的空间分布均发生明显改变.本文结果对于了解乌鲁木齐城区积雪的区域差异,为主城区道路积雪清运、保障道路通畅优化方案及春季融雪洪水防御预案的制定提供基础数据支撑,也可以弥补当前气象站点少且空间分布不匀的不足.此外,本文对卫星遥感数据反演的积雪参数精度验证也具有实际参考价值.

关键词: 乌鲁木齐, 积雪深度, 积雪密度, 空间分布

Abstract: In this paper, the spatial and temporal distribution characteristics of snow cover depth and density from late December 2011 to late February 2012, and the same periods from 2012 to 2013 in urban and suburb of Ürümqi city were analyzed by using ordinary Kriging interpolation methods, based on data of snow cover depth and density during the winters of 2011-2013. The results show that snow cover depth and density between urban and suburb had significant temporal and spatial differences in the city. Snow cover around the Midong Petrochemical Industrial Park often was thicker in winter, especially during December and February. However, there were some places with more snow on different underlying surfaces inside the downtown areas. Snow cover accumulated gradually on the ground from late December to late February, especially in late December. Meanwhile, spatial variation range of snow cover depth was greater than that of density. Snow cover density in the urban centre was lower than that in the east and northeast of the city in mid-January and late February, while higher in the urban centre in late December than that in suburb. Compared to the same period in 2012, the snow cover amount increased in mid-January of 2013, but the mean density of snow cover increased insignificantly, and the spatial distributions of snow cover depth and density in city altered obviously. This study will be of greatly importance for making up the meteorological data, less and uneven distributed, in the study region, and help scientists and policy makers to understand the regional variations of snow and implement plans for road maintains in winter and against snowmelt flood in spring. The measured data also can help check the accuracy of snow parameters inversed from satellite data.

Key words: Ürümqi City, snow depth, snow density, spatial distribution

中图分类号: 

  • P426.63+5