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REMOTE SENSING FOR LAND & RESOURCES    2017, Vol. 29 Issue (2) : 117-124     DOI: 10.6046/gtzyyg.2017.02.17
Contents |
An analysis of spatial-temporal distribution features of snow cover over the Tibetan Plateau based on MODIS data
CHU Duo1, 2, DA Wa3, LABA Zhuoma2, XU Weixin4, ZHANG Juan4
1. Lhasa Campus of Chengdu Institute of Plateau Meteorology, CMA, Lhasa 850000, China;
2. Tibet Institute of Plateau Atmospheric and Environmental Sciences, Lhasa 850000, China;
3. Meteorological Service Center of Tibet Meteorological Bureau,Lhasa 850000, China;
4. Qinghai Institute of Meteorological Sciences, Xining 810001, China
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Abstract  In this paper, the spatial-temporal distribution of snow cover and the impact of topographic factors such as elevation, aspect and slope on snow cover distribution over the Tibetan Plateau were analyzed based on MOD10A2 acquired from 2000 to 2014 and the digital elevation model(DEM)using GIS spatial analysis techniques. The results are as follows: ① The snow cover over the Tibetan Plateau is characterized by rich snow and high snow cover fraction(SCF)in the surrounding areas and interior high mountains but less snow and low SCF in inland basins and valleys. ② Snow cover over the Tibetan Plateau exhibits the feature the higher the altitude, the higher the SCF, the longer the snow cover duration and the more stable the intra-annual variations. ③ Intra-annual snow cover distribution below 4 000 m is characterized by single-peak type, and that above 4 000 m is characterized by double-peak type. ④ The lowest SCF below 6 000 m occurs in summer while SCF above 6 000 m occurs in winter. ⑤ In different aspects, SCF is the highest in north aspect, the lowest in south aspect, and the middle between them in east and west aspects.
Keywords services chain      remote sensing information models (RSIM)      visual customization      automatic calculation      workflow     
Issue Date: 03 May 2017
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RAN Quan
LI Guoqing
YU Wenyang
ZHANG Lianchong
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RAN Quan,LI Guoqing,YU Wenyang, et al. An analysis of spatial-temporal distribution features of snow cover over the Tibetan Plateau based on MODIS data[J]. REMOTE SENSING FOR LAND & RESOURCES, 2017, 29(2): 117-124.
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