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The HYDROCOASTAL First Test Data Set
was produced to evaluate different processing algorithms
over the coastal zone and inland waters. The data set
covers 18 regions of interest (see the figure below),
and includes 2 years data (2018-2019,) 3 years for
regions with river discharge estimates.
The Level 2 products that are available were
generated from Sentinel 3A, Sentinel 3B, and Cryosat-2
SAR altimeter data, and Cryosat-2 SARin altimeter data,
with six different processing algorithms:
- Two Step Analytical Processor (coastal and inland)
isardSAT
- Specialised SARin (coastal) Aresys
- MWaPP (Multiple Waveform Persistent Peak (inland)
DTU Space
- Statistical Re-tracker STARS type (coastal) U Bonn
- ALES+ for SAR (coastal) TU Munich
- ICC-ER Isolate, Cleanse, Classify - Empirical
Retracker (inland) ATK
These algorithms are described in the
Algorithm Theoretical Basis Document.
The data products contain outputs from all the
processing schemes (re-trackers) except ICC-ER, which
has not yet been fully implemented and validated. The
outputs from the different re-trackers are merged into a
single product, which is available with (individual
product size ~10-100 MB) and without the waveform stack
information (individual product size ~300-900 KB).
Wet and Dry Troposphere corrections for all products
have been generated by U Porto, using the GPD+ scheme
(Sensing of Environment 252 (2021) 112149,
https://authors.elsevier.com/sd/article/S0034-4257(20)30522-8),
and have been integrated in the products.
Level 3 products for nine inland water regions
(Amazon, Amur, Danube, Mississippi, Ob, Po, Rhine,
Yangtse, Zambezi) have been generated by DTU Space.
These comprise time series data sets derived from the
Sentinel-3 L2 data. The processing scheme is described
in the
Algorithm Theoretical Basis Document.
The format and content of the L2 and L3 products is
described in the Product
Specification Document.
The HYDROCOASTAL Level 2 and L3 First
Test Data Set is available for research purposes, please contact info@satoc.eu for
details
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