基于MODIS积雪产品的天山年积雪日数空间分布特征研究

doi:10.7522/j.issn.1000-0240.2016.0176

冰川冻土 ›› 2016, Vol. 38 ›› Issue (6): 1510-1517.doi: 10.7522/j.issn.1000-0240.2016.0176

基于MODIS积雪产品的天山年积雪日数空间分布特征研究

赵文宇^1,2,3, 刘海隆¹, 王辉¹, 胡伟杰¹

1. 石河子大学水利建筑工程学院, 新疆石河子 832000;
2. 新疆环境保护科学研究院, 新疆乌鲁木齐 830011;
3. 新疆环境污染监控与风险预警重点实验室, 新疆乌鲁木齐 830011

收稿日期:2016-08-12 修回日期:2016-11-20 出版日期:2016-12-25 发布日期:2017-04-06
通讯作者: 刘海隆,E-mail:liu_hai_tiger@163.com E-mail:liu_hai_tiger@163.com
作者简介:赵文宇(1990-),女,甘肃金昌人,2013年毕业于石河子大学,现为石河子大学在读硕士研究生,主要从事3S技术应用研究.E-mail:529026511@qq.com
基金资助:
国家自然基金项目（51569027；41371419）；新疆维吾尔自治区研究生科研创新项目（XJGRI2015044）资助

A study of spatial distribution of snow cover days in the Tianshan Mountains based on MODIS snow products

ZHAO Wenyu^1,2,3, LIU Hailong¹, WANG Hui¹, HU Weijie¹

1. College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi 832000, Xinjiang, China;
2. Xinjiang Academy of Environmental Protection Science, Ürümqi 830011, China;
3. Xinjiang Key Laboratory for Environmental Pollution Monitoring and Risk Warning, Ürümqi 830011, China)

Received:2016-08-12 Revised:2016-11-20 Online:2016-12-25 Published:2017-04-06

摘要/Abstract

摘要：

山区积雪是干旱区气候变化的重要指标因子，积雪日数与积雪分布之间有着密切关系。为了研究天山山区积雪日数空间分布特征，以MODIS8d积雪产品MOD10A2（Terra）和MYD10A2（Aqua）为数据源，首先对数据进行最大化合成，获取新疆天山500m×500m分辨率的年积雪日数，然后分析了2002-2014年13a积雪日的年际变化，并结合DEM数据分析了13a天山多年平均积雪日随高程和坡度的变化特征。结果表明：天山积雪日数分布极为不均，最大年平均积雪日数为193d，13a内天山绝大部分地区年积雪日变化趋势较为稳定，稳定区约占天山总面积的83.92%；在研究时段内天山总积雪日数主要集中在30d以内，其比例约为天山总面积的48%；各个高程带积雪日面积分布差异明显，但总体上积雪日数随着高程的增加而增加；从积雪日数随坡向分布来看，北坡、东北坡、东坡、西坡、西北坡所占面积比例（>30d）相对高于其他坡向。该研究结果对干旱区水资源估算具有参考意义。

关键词: MODIS, 积雪日数, 时空分布, 天山

Abstract:

Snow cover is one of the sensitive factors to climate change in arid area. There is a close relationship between snow cover days and snow cover area. In order to analyze the spatial distribution of snow cover days, eight-day synthetic data of MODIS from Terra (MOD10A2) and Aqua (MYD10A2) were used. Firstly, the snow cover days (500 m×500 m) in Tianshan Mountains were obtained through removing the effect of cloud based on combined snow cover products of MODIS. Then, based on annual snow cover days and DEM data, the spatial and temporal variabilities of snow cover days with elevation and aspect from 2002 through 2014 were analyzed. The results show that the distribution of snow cover days had been extremely uneven. The maximum annual mean snow cover days were 193 days. The snow cover days in 83.92% area of the Tianshan Mountains had changed little during the 13 years. About 48% snow cover days was no more than 30 days. The snow cover days had increased with elevation, with a large spatial difference. More snow cover days (>30 d) were gathered in the north, northeast, east, west and northwest aspects. This study will be useful for estimating water resources in arid areas.

Key words: MODIS, snow cover days, spatial and temporal distribution, Tianshan Mountains

中图分类号:

P468.0+25

赵文宇, 刘海隆, 王辉, 胡伟杰. 基于MODIS积雪产品的天山年积雪日数空间分布特征研究[J]. 冰川冻土, 2016, 38(6): 1510-1517.

ZHAO Wenyu, LIU Hailong, WANG Hui, HU Weijie. A study of spatial distribution of snow cover days in the Tianshan Mountains based on MODIS snow products[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2016, 38(6): 1510-1517.

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基于MODIS积雪产品的天山年积雪日数空间分布特征研究

A study of spatial distribution of snow cover days in the Tianshan Mountains based on MODIS snow products

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