Evaluation of the Sentinel-3 Hydrologic Altimetry Processor prototypE (SHAPE) methods

Albert Garcia-Mondejar (isardSAT Ltd., United Kingdom)

CoAuthors

Nicolas Bercher (Along-Track S.A.S., France); Pierre Fabry (Along-Track S.A.S., France); Mònica Roca (isardSAT Ltd., United Kingdom); Eduard Makhoul (isardSAT Ltd., United Kingdom); Joana Fernandes (Fac. Ciencias Univ. Porto, Portugal); Clara Lazaro (Fac. Ciencias Univ. Porto, Portugal); Telmo Vieira (Fac. Ciencias Univ. Porto, Portugal); David Gustafsson (Swedish Meteorological and Hydrological Institute, Sweden); Marco Restano (SERCO/ESRIN , Italy); Américo Ambrózio (DEIMOS/ESRIN, Italy); Jérôme Benveniste (European Space Agency/ESA-ESRIN, Italy)

Event: 2017 Ocean Surface Topography Science Team Meeting

Session: Science IV: 25 years of satellite altimetry for Cryosphere and Hydrology: from experimental to emerging operational applications

Presentation type: Type Poster

Inland water scenes are highly variable, both in space and time, which leads to a much broader range of
radar signatures than ocean surfaces. This applies to both LRM and “SAR” mode (SARM) altimetry.

Nevertheless, the enhanced along-track resolution of SARM altimeters should help improve the accuracy
and precision of inland water height measurements from the satellite. The SHAPE project – Sentinel-3 Hydrologic Altimetry Processor prototypE – which is funded by ESA through the Scientific Exploitation of
Operational Missions Programme Element (contract number 4000115205/15/I-BG) aims at preparing for
the exploitation of Sentinel-3 data over the inland water domain.

The SHAPE Processor implements all of the steps necessary to derive rivers and lakes water levels and
discharge from Delay-Doppler Altimetry and perform their validation against in situ data. The processor
uses FBR CryoSat-2 and L1A Sentinel-3A data as input and also various ancillary data (proc. param.,
water masks, L2 corrections, etc.), to produce surface water levels. At a later stage, water level data are assimilated into hydrological models to derive river discharge.

This work presents the improvements obtained with the new methods and algorithms over the regions of interest (Amazon and Danube rivers, Vanern and Titicaca lakes).
 

Poster show times:

RoomStart DateEnd Date
Concerto Ballroom Thu, Oct 26 2017,14:00 Thu, Oct 26 2017,18:00
Albert Garcia-Mondejar
isardSAT Ltd.
United Kingdom
albert.garcia@isardsat.co.uk