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Dataset

 

Sustaining Himalayan Water Resources in a Changing Climate (SusHi-Wat): Monthly maps of wet and dry snow over a Himalayan river basin (January 2015 to July 2017)

Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2018-03-16
Download Stats: last 12 months

Abstract

This dataset contains monthly maps of dry and wet snow for a Himalayan river basin in northern India. The data were collected as part of the Sustaining Himalayan Water Resources in a Changing Climate (SusHi-Wat) project aimed at improving our understanding on how water is stored in, and moves through, a Himalayan river system in northern India.

The maps were obtained by combining satellite remote sensing images from Sentinel-1 and the Moderate Resolution Imaging Spectroradiometer (MODIS). The resolution of the maps is 500m and the coordinate system is EPSG:4326. The dry snow data correspond to the MODIS land cover product (MCD12Q1). The wet snow data were obtained from Sentinel-1 by applying a -2dB threshold on the backscatter ratio between a Sentinel-1 image with wet snow and a reference Sentinel-1 image with only dry snow.

The possible pixel values are:
0: no snow,
1-100: wet snow cover fraction,
101-200: dry snow cover fraction with an offset of 100,
240: missing Sentinel-1 data,
250: pixel wrongly identified as wet snow by Sentinel-1 (false positives),
255: fill value.

The images are GeoTIFF formatted.

Citable as:  Snapir, B.; Momblanch, A.; Jain, S.K.; Waine, T.W.; Holman, I.P. (2018): Sustaining Himalayan Water Resources in a Changing Climate (SusHi-Wat): Monthly maps of wet and dry snow over a Himalayan river basin (January 2015 to July 2017). Centre for Environmental Data Analysis, date of citation. doi:10.5285/62cc25997f58459581879553f3a25e19. http://dx.doi.org/10.5285/62cc25997f58459581879553f3a25e19
Abbreviation: Not defined
Keywords: Himalayan, wet, dry, snow, hydrology, Sentinel-1, MODIS, sushi-wat

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
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Use of these data is covered by the following licence: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data was prepared and sent to Centre for Environmental Data Analysis (CEDA) for archiving by the project team.

Data Quality:
Data is as given by the data provider, no quality control has been performed by the Centre for Environmental Data Analysis (CEDA)
File Format:
The images are GeoTIFF formatted.

Process overview

This dataset was generated by instruments deployed on platforms as listed below.

Mobile platform operations

Mobile Platform Operation 1 Aqua Satellite orbit details
Mobile Platform Operation 2 Terra Satellite orbit details
Output Description None

No variables found.

Coverage
Temporal Range
Start time:
2015-03-01T00:00:00
End time:
2017-07-31T22:59:59
Geographic Extent

 
32.9307°
 
75.8654°
 
82.4498°
 
30.3205°