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Topographic controls on spatio-temporal snow cover distribution in Northwest Himalaya.

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Title: Topographic controls on spatio-temporal snow cover distribution in Northwest Himalaya.
Authors: Sharma, Vaibhav1 (AUTHOR) vaibhavsharma51@gmail.com, Mishra, V.D.1 (AUTHOR), Joshi, P.K.2 (AUTHOR)
Source: International Journal of Remote Sensing. May2014, Vol. 35 Issue 9, p3036-3056. 21p. 3 Color Photographs, 2 Diagrams, 4 Charts, 5 Graphs.
Subjects: Topographical databases, Spatio-temporal variation, MODIS (Spectroradiometer), Snow cover, Cloudiness
Geographic Terms: Himalaya Mountains
Abstract: The present study deals with spatio-temporal snow cover distribution in Northwest Himalaya (NWH) in a discourse on regional topography and prevalent climatology. Snow cover variation during 2001–2012 in NWH and eight major river basins was examined using MODIS data on board the Terra satellite. Slope match topographic correction was applied to eliminate the differential illumination effect on satellite imagery. The impact of cloud cover was removed by generating a 10-day maximum snow cover product. Annual and seasonal analysis shows a decreasing trend in snow cover area (SCA) over the entire NWH. Maximal SCA was observed in the windward river basins of the Lower and the Middle Himalayan zones and in the highly glaciated Shyok river basin of the Upper Himalaya. Monthly snow cover duration (SCD) maps revealed the effect of longitudinal variation as well as the strong influence of regional climatology and topography. The relationship of SCA with altitude and aspect was studied in all the river basins of NWH. The study shows a linear increment of SCA/D with increasing respect to elevation in all river basins. The maximum rate of SCA/D change with elevation was observed in the Jhelum river basin. In the Middle Himalayan Zone, an effect of basin orientation in regard to elevation was observed. Mean annual SCA at altitudes of up to 4500 m shows a decreasing trend. Seasonal analysis of aspect-wise snow cover shows that southern slopes have lower SCA during winter months. The difference in SCA between northern and southern slopes is even higher in summer and the monsoon period. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Remote Sensing is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 95755355
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Topographic controls on spatio-temporal snow cover distribution in Northwest Himalaya.
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  Data: <searchLink fieldCode="AR" term="%22Sharma%2C+Vaibhav%22">Sharma, Vaibhav</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> vaibhavsharma51@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Mishra%2C+V%2ED%2E%22">Mishra, V.D.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Joshi%2C+P%2EK%2E%22">Joshi, P.K.</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Remote+Sensing%22">International Journal of Remote Sensing</searchLink>. May2014, Vol. 35 Issue 9, p3036-3056. 21p. 3 Color Photographs, 2 Diagrams, 4 Charts, 5 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Topographical+databases%22">Topographical databases</searchLink><br /><searchLink fieldCode="DE" term="%22Spatio-temporal+variation%22">Spatio-temporal variation</searchLink><br /><searchLink fieldCode="DE" term="%22MODIS+%28Spectroradiometer%29%22">MODIS (Spectroradiometer)</searchLink><br /><searchLink fieldCode="DE" term="%22Snow+cover%22">Snow cover</searchLink><br /><searchLink fieldCode="DE" term="%22Cloudiness%22">Cloudiness</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Himalaya+Mountains%22">Himalaya Mountains</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The present study deals with spatio-temporal snow cover distribution in Northwest Himalaya (NWH) in a discourse on regional topography and prevalent climatology. Snow cover variation during 2001–2012 in NWH and eight major river basins was examined using MODIS data on board the Terra satellite. Slope match topographic correction was applied to eliminate the differential illumination effect on satellite imagery. The impact of cloud cover was removed by generating a 10-day maximum snow cover product. Annual and seasonal analysis shows a decreasing trend in snow cover area (SCA) over the entire NWH. Maximal SCA was observed in the windward river basins of the Lower and the Middle Himalayan zones and in the highly glaciated Shyok river basin of the Upper Himalaya. Monthly snow cover duration (SCD) maps revealed the effect of longitudinal variation as well as the strong influence of regional climatology and topography. The relationship of SCA with altitude and aspect was studied in all the river basins of NWH. The study shows a linear increment of SCA/D with increasing respect to elevation in all river basins. The maximum rate of SCA/D change with elevation was observed in the Jhelum river basin. In the Middle Himalayan Zone, an effect of basin orientation in regard to elevation was observed. Mean annual SCA at altitudes of up to 4500 m shows a decreasing trend. Seasonal analysis of aspect-wise snow cover shows that southern slopes have lower SCA during winter months. The difference in SCA between northern and southern slopes is even higher in summer and the monsoon period. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Remote Sensing is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1080/01431161.2014.894665
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 21
        StartPage: 3036
    Subjects:
      – SubjectFull: Topographical databases
        Type: general
      – SubjectFull: Spatio-temporal variation
        Type: general
      – SubjectFull: MODIS (Spectroradiometer)
        Type: general
      – SubjectFull: Snow cover
        Type: general
      – SubjectFull: Cloudiness
        Type: general
      – SubjectFull: Himalaya Mountains
        Type: general
    Titles:
      – TitleFull: Topographic controls on spatio-temporal snow cover distribution in Northwest Himalaya.
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            NameFull: Sharma, Vaibhav
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            NameFull: Mishra, V.D.
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            NameFull: Joshi, P.K.
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            – D: 01
              M: 05
              Text: May2014
              Type: published
              Y: 2014
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              Value: 35
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            – TitleFull: International Journal of Remote Sensing
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