干旱区生态环境知识资源中心(Arid): 基于MODIS积雪产品的天山年积雪日数空间分布特征研究

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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
其他题名	A study of spatial distribution of snow cover days in the Tianshan Mountains based on MODIS snow products
	赵文宇 1; 刘海隆 2; 王辉 2; 胡伟杰 2
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2016
卷号	38 期号:6 页码:1510-1517
中文摘要	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MODIS 8 d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500 mx 500 m分辨率的年积雪日数,然后分析了2002-2014年13 a积雪日的年际变化,并结合DEM数据分析了13 a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193 d, 13 a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30 d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(>30 d)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.
英文摘要	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 x 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.
中文关键词	积雪日数 ; 时空分布 ; 天山
英文关键词	MODIS MODIS snow cover days spatial and temporal distribution Tianshan Mountains
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5947455
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233940
作者单位	1.石河子大学水利建筑工程学院, 新疆环境污染监控与风险预警重点实验室, 石河子, 新疆 832000, 中国; 2.石河子大学水利建筑工程学院, 石河子, 新疆 832000, 中国
推荐引用方式 GB/T 7714	赵文宇,刘海隆,王辉,等. 基于MODIS积雪产品的天山年积雪日数空间分布特征研究[J]. 石河子大学,2016,38(6):1510-1517.
APA	赵文宇,刘海隆,王辉,&胡伟杰.(2016).基于MODIS积雪产品的天山年积雪日数空间分布特征研究.冰川冻土,38(6),1510-1517.
MLA	赵文宇,et al."基于MODIS积雪产品的天山年积雪日数空间分布特征研究".冰川冻土 38.6(2016):1510-1517.