{"ob_id":10983,"uuid":"939c6aa57f9bcd5340157cb013b036d8","title":"ATSR-1/2  Ungridded Brightness Temperature (UBT) data","abstract":"This dataset collection comprises Ungridded Brightness Temperature (UBT) products from both ATSR-1 and ATSR-2 on the respective ERS-1 & 2 platforms.  The ATSR (Along Track Scanning Radiometer) is an imaging radiometer providing images of the Earth from space. The ERS (Earth Resources Satellite) was the first ESA satellite observation programme comprising 2 polar orbiters.  The ERS-1 and 2 programmes commenced in 1991 and 1995 respectively with ERS1 ceasing operations in 2000 and ERS-2 in 2011.  \r\n\r\nThe UBT data is an ungridded brightness temperature/reflectance product in the SADIST-2 data format. The product contains ungridded, calibrated brightness temperatures or reflectances from all or some of the ATSR-1/ATSR-2 detectors. Although the product remains ungridded, it may optionally contain pixel latitude/longitude positions, and/or pixel X/Y (across-track/along-track) co-ordinates. Ungridded products contain pixels in the ATSR scan geometry. There is a correspondence between the contents of a record and the contents of an ATSR instrument scan.  ATSR data is notable in that it incorporated 2 look directions (nadir and forward) to aid in atmospheric correction and also incorporated consistent calibration for each scan/scene.\r\n\r\nATSR-1 and 2 data are available at CEDA to any registered UK user with correct authorisation from the ATSR-1/2 Science Team, and NERC Award reference.  Non NERC users should have ESA Category 1 clearance.  However, users are encouraged to use the ATSR-1/2 in the latest AATSR multimission format in preference to this UBT data.  CEDA remains the primary archive for this data.","keywords":"UBT, ATSR1, ATSR2, ERS1, ERS2, Radiometer, Imager, Brightness Temperature, Dual View Imager","discoveryKeywords":[1138],"publicationState":"published","dataPublishedTime":"2003-10-03T12:00:00","doiPublishedTime":null,"member":["https://catalogue.ceda.ac.uk/api/v2/observations/32766/?format=json","https://catalogue.ceda.ac.uk/api/v2/observations/38727/?format=json"],"identifier_set":["https://catalogue.ceda.ac.uk/api/v2/identifiers/7322/?format=json","https://catalogue.ceda.ac.uk/api/v2/identifiers/7323/?format=json"],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/39608/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/39607/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/39610/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/39611/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/39612/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/46829/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/39609/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/190914/?format=json"]}