{"ob_id":25892,"uuid":"62cc25997f58459581879553f3a25e19","title":"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. \r\n\r\nThe 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. \r\n\r\nThe possible pixel values are: \r\n0: no snow, \r\n1-100: wet snow cover fraction, \r\n101-200: dry snow cover fraction with an offset of 100, \r\n240: missing Sentinel-1 data, \r\n250: pixel wrongly identified as wet snow by Sentinel-1 (false positives), \r\n255: fill value. \r\n\r\nThe images are GeoTIFF formatted.","keywords":"Himalayan, wet, dry, snow, hydrology, Sentinel-1, MODIS, sushi-wat","publicationState":"citable","dataPublishedTime":"2018-03-16T15:35:39","doiPublishedTime":null,"updateFrequency":"","status":"completed","result_field":{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/25894/?format=json","dataPath":"/badc/deposited2018/sushi-wat_snow-maps/data","oldDataPath":[],"storageLocation":"internal","storageStatus":"online","volume":30447071,"numberOfFiles":31,"fileFormat":"The images are GeoTIFF formatted."},"timePeriod":"https://catalogue.ceda.ac.uk/api/v2/times/6991/?format=json","geographicExtent":"https://catalogue.ceda.ac.uk/api/v2/bboxes/2187/?format=json","nonGeographicFlag":false,"phenomena":[],"dataLineage":"Data was prepared and sent to Centre for Environmental Data Analysis (CEDA) for archiving by the project team.","removedDataTime":null,"removedDataReason":"","language":"English","identifier_set":["https://catalogue.ceda.ac.uk/api/v2/identifiers/9681/?format=json"],"projects":["https://catalogue.ceda.ac.uk/api/v2/projects/24877/?format=json"],"observationcollection_set":[],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/108253/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108254/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108255/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108256/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108257/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108259/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108260/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108261/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108258/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/168819/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108264/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108265/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108266/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/108267/?format=json"],"procedureAcquisition":"https://catalogue.ceda.ac.uk/api/v2/acquisitions/25893/?format=json","procedureCompositeProcess":null,"procedureComputation":null,"permissions":[{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/2522/?format=json","useLimitation":null,"accessConstraints":null,"accessCategory":"registered","accessRoles":null,"label":"registered: None group","licenceURL":"http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/","licenceClassifications":"any, attribution required"}],"discoveryKeywords":[{"ob_id":1138,"name":"NDGO0003"}]}