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Coverage: The SARin activity will focus on two areas:
• The coast of Chile, where Cryosat-2 tracks run almost parallel to the coast line.
• The coast of Cuba, where Cryosat-2 tracks are perpendicular to the coast. (Lat 19-24N; Lon 73-86W)
Other
SARin areas around the world will be also checked in order to find
interesting tracks cases, taking into account not only the geometry of
the coast with respect to the satellite track but also the coastal land
topography
Time
Period: The whole CryoSat-2 mission to date will be considered (The
SARin mask over Cuba was established on 1st October 2012)
Cryosat-2
Data Products Used: Cryosat-2 SARIN L1b and L2I products
Method:
The study will consider the
information provided in Cryosat-2 SARIN L1b and L2I products to derive
the angle of arrival AoA of the echoes (that can be extracted from the
phase difference), which combined with the sub-satellite ground track,
should make it possible to build the actual reflection point and
geo-locate it.
Moreover, a two steps processing will make possible, using the geophysical corrections from ESA products,
to derive the SSH in coastal zones. The first step consists in a
post-L1b dedicated algorithm that, based in the AoA, generates a seed
for the retracker, avoiding the off-nadir (e.g. land contamination)
signals. The second step is made by an in-house developed SARin
retracker, that gives the final SSH.
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Data
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