The information provided in this page is applicable to the latest ATSR-1 and ATSR-2 Level 1B products.

 

ATSR Fourth Reprocessing Dataset Information

The latest products are from the Fourth (A)ATSR Reprocessing, completed in 2022. This introduced some key improvements:

• Generation of new ATSR-1 and ATSR-2 Level 1B products in SLSTR-like format (NetCDF4)

• Improved surface classification via use of the Sentinel-3 Land Water Masks

• New Uncertainty Estimates

• Improved cloud flags due to a correction in the the ATSR-1 and ATSR-2 Cloud processing ADFs

• ATSR-1 and ATSR-2 L1B products are now ortho-geolocated to a DEM for the first time

 

ATSR-1 and ATSR-2 Technical Documents

 

The following documentation is available for the Sentinel/SAFE-like format Level 1B products:

• User guide for 4th reprocessing products users: User Documentation for (A)ATSR 4th Reprocessing Products
• Level 1B Product Specifications: FAST Level 1b Product Definition PO-TN-RAL-AT-0568 Issue 1.4
• Level 1B Product Notice Readme File: QA4EO-OQC-MEM-VEG-5040 ATSR Product Notice Readme for ERn_AT_1_RBT

 

ATSR-1 and ATSR-2 Product Availability

• Level 1B ATSR-1 and ATSR-2 data access
• Information on ATSR-1 and ATSR-2 upper level products and how to access them is given in the Product Availability section.

 

Level 2 Products

Fourth Reprocessing Level 2 products will be generated by the ESA CCI SST and LST teams in their own time frame.

 

ATSR Third Reprocessing Dataset Information

Third Reprocessing products are still currently available on the NEODC archive via CEDA. Note that these products have been superseded by both the Fourth Reprocessing dataset and products from the ESA CCI teams.

• Gridded L1B Brightness Temperature and Reflectance measurement (TOA) product

• Averaged Surface Temperature (AR) product

• Gridded L2 Surface Temperature (NR) product

• Three Band Colour Composite Browse (AST) Product

• L2P/L3U SST products

• Level 3 SST Products from ARC

• Sea Surface Temperature Meteo (MET) product

The following documentation refers to the Third Reprocessing SST L2P/L3U products:

• SST L2P/L3U Product User Guide: (A)ATSR ARC_L2P Product Guide Issue 1.3

• Product Specifications: PO-RS-MDA-GS-2009 Volume 07 Issue 4C