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)
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.
Details
| Previous Info: |
No news update for this record
|
|---|---|
| Previously used record identifiers: |
No related previous identifiers.
|
| Access rules: |
Access to these data is available to any registered CEDA user. Please Login or Register for a CEDA account to gain access.
Use of these data is covered by the following licence(s): 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
Instrument/Platform pairings
Mobile platform operations
| Mobile Platform Operation 1 | Terra Satellite orbit details |
| Mobile Platform Operation 2 | Aqua Satellite orbit details |
| Output Description | None |
No variables found.
Temporal Range
2015-03-01T00:00:00
2017-07-31T22:59:59
Geographic Extent
32.9307° |
||
75.8654° |
82.4498° |
|
30.3205° |