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Remote Sensing Technology and Application  2015, Vol. 30 Issue (4): 767-774    DOI: 10.11873/j.issn.1004-0323.2015.4.0767
    
Monitoring of Snowline Altitude over the Tibetan Plateau based on MODIS Data
Tang Zhiguang1,Wang Jian2,Liang Ji1,2,Li Chaokui1,Wang Xin3
(1.National-Local Joint Engineering Laboratory of Geo\|spatial Information Technology,
Hunan University of Science and Technology,Xiangtan 411201,China;
2.Cold and Arid Regions Environmental and Engineering Research Institute,
Chinese Academy of Sciences,Lanzhou 730000,China;
3.Department of Geography,Hunan University of Science and Technology,Xiangtan 411201,China )
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Abstract  

As the boundary that separates snow\|covered areas from snow\|free areas,the snowline is the most sensitive indicator for monitoring climatic behavior among all the cryosphere elements.In this paper,the snowline altitude over the Tibetan Plateau (TP) during 2000 to 2011 are extracted using the cloud\|removed MODIS fractional snow cover products combining with DEM,and the spatiotemporal changes of snowline altitude are examined.The proposed MODIS\|based snowline altitude extracting methodology include the determination of snowline pixel and its altitude,and the establishment of snowline altitude field.The results show that due to the complex terrain,the snowline altitude in the interior of the TP is obviously higher than the peripheral mountainous area.A strong seasonal and interannual variability of snowline altitude is discovered,although there is no obvious trend of snowline altitude change during the examined period.Especially,the east and south of the TP,due to the influence of summer monsoon,there are very large interannual fluctuations of snowline altitude in the summer months.The MODIS-based snowline altitude extracting method was described in this paper,which has a good application potential in SLA monitoring for any other regions.
 

Key words:  MODIS      Snowline altitude      Tibet Plateau      Remote Monitoring     
Received:  24 February 2014      Published:  22 September 2015
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Tang Zhiguang
Wang Jian
Liang Ji
Li Chaokui
Wang Xin

Cite this article: 

Tang Zhiguang,Wang Jian,Liang Ji,Li Chaokui,Wang Xin. Monitoring of Snowline Altitude over the Tibetan Plateau based on MODIS Data. Remote Sensing Technology and Application, 2015, 30(4): 767-774.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2015.4.0767     OR     http://www.rsta.ac.cn/EN/Y2015/V30/I4/767

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