SCOOP project pages

SCOOP Data Pages: First Test Data Set

The table below lists and provides further information on the different components of the First Test Data Set.

Data types and providers:

• Level 1B (L1B): isardSAT
• Level 2 (L2): ESA GPOD
  
• RDSAR: TU Delft
• Wet Troposphere Correction (WTC): University of Porto
• Auxiliary input data: Further information
• Validation data used for evaluation: Further information

The algorithms used to generate this data set are described in the L1 Algorithm Theoretical Basis Document (ATBD), the L2 Algorithm Theoretical Basis Document (ATBD), and the products are described in the Product Specification Document (PSD).

Data Sets indicated in bold are available, those in italics are not available.

Login information for the SCOOP ftp server is available on request by email from scoop.info at esa.int.

Notes:

1. The input data to the First SCOOP Test Data Set are Cryosat-2 Full Bit Rate (FBR) data, Baseline C processing. These input data were retrieved for the project by ESA / ESRIN and provided to the project team on hard disk. They are not available through the project pages but can be accessed directly from ESA. The input files are listed by year in links.
   


2. L1B products are in the L1B_ISD_S3 sub-directories and have been processed using the ESA GPOD Facility from the Cryosat FBR Baseline C data set according to the Sentinel-3 baseline. Key aspects are:
• Calibration corrections have been applied according to the information provided in the technical note: “Cryosat Characterisation for FBR users” (C2-TN-ARS-GS-5179), available from the Cryosat wiki pages.


3. L2 products are in the L2_STL_S3 sub-directories and have been generated by using the ESA GPOD Facility from the L1B products processed according to the Sentinel-3 baseline. L1B to L2 processing (echo modelling / re-’tracking) equivalent to the Sentinel-3 Baseline processing (PDGS retracker version V2.5) has been applied. Key aspects are:
• Implementation of SAMOSA-2 model
  
• Application of a Look-Up Table (LUT) for the selection of a variable Point Target Response (PTR) width as a function of SWH.


4. RDSAR products are processed by TU Delft from the Cryosat FBR Baseline C data set, using processing to provide a product equivalent to the Sentinel-3 PLRM baseline.


5. The Wet Troposphere Correction is produced by the University of Porto, using the GNSS-derived Path Delay Plus (GPD+) Algorithm using all available data types which for CryoSat-2 are GNSS data at coastal and island stations and data from scanning imaging MWR (SI-MWR) on board ~20 different satellites. Reference M. Joana Fernandes and Clara Lazaro, GPD+ Wet Tropospheric Corrections for CryoSat-2 and GFO Altimetry Missions, Remote Sensing 2016, 8(10), 851; doi:10.3390/rs8100851 (http://www.mdpi.com/2072-4292/8/10/851)