FN Archimer Export Format
PT J
TI A new airborne system for simultaneous high-resolution ocean vector current and wind mapping: first demonstration of the SeaSTAR mission concept in the macrotidal Iroise Sea
BT 
AF McCann, David Lewis
   Martin, Adrien C. H.
   Macedo, Karlus
   Carrasco Alvarez, Ruben
   Horstmann, Jochen
   Marié, Louis
   Márquez-Martínez, José
   Portabella, Marcos
   Meta, Adriano
   Gommenginger, Christine
   Martin-Iglesias, Petronilo
   Casal, Tania
AS 1:1;2:1,2;3:3;4:4;5:4;6:5;7:6;8:7;9:3;10:1;11:8;12:8;
FF 1:;2:;3:;4:;5:;6:PDG-ODE-LOPS-OC;7:;8:;9:;10:;11:;12:;
C1 National Oceanography Centre, Liverpool, L55DA, United Kingdom
   NOVELTIS, Labège, 31670, France
   Metasensing BV, Noordwijk, 2201 DK, Netherlands
   Helmholtz-Zentrum Hereon, Geestacht, 21502, Germany
   Ifremer, Plouzané, 29280, France
   Radarmetrics SL, Santander, 39005, Spain
   Institut de Ciències del Mar, Barcelona, 08003, Spain
   European Space Agency, European Space Research and Technology Centre, Noordwijk, 2201 AZ, Netherlands
C2 NOC, UK
   NOVELTIS, FRANCE
   METASENSING BV, NETHERLANDS
   HELMHOLTZ ZENTRUM, GERMANY
   IFREMER, FRANCE
   RADARMETRICS SL, SPAIN
   ICM CSIC, SPAIN
   ESA, NETHERLANDS
SI BREST
SE PDG-ODE-LOPS-OC
UM LOPS
TC 0
UR https://archimer.ifremer.fr/doc/00870/98149/107473.pdf
LA English
DT Article
CR BioSWOT-Med
BO L'Atalante
AB Coastal seas, shelf seas and marginal ice zones are dominated by small-scale ocean surface dynamic processes that play a vital role in the transport and exchange of climate-relevant properties like carbon, heat, water and nutrients between land, ocean, ice and atmosphere. Mounting evidence indicates that ocean scales below 10 km have far-ranging impacts on air-sea interactions, lateral ocean dispersion, vertical stratification, ocean carbon cycling, and marine productivity – governing exchanges across key interfaces of the Earth System, the global ocean and atmosphere circulation and climate. Yet, these processes remain poorly observed at the fine spatial and temporal scales necessary to resolve them. Ocean Surface Current Airborne Radar (OSCAR) is a new airborne instrument with the capacity to inform these questions by mapping vectorial fields of total ocean surface currents and winds at high resolution over a wide swath. Developed for the European Space Agency (ESA), OSCAR is the airborne demonstrator of the satellite mission concept ‘SeaSTAR’, which aims to map total surface current and ocean wind vectors with unprecedented accuracy, spatial resolution and temporal revisit across all coastal seas, shelf seas and marginal ice zones. Like SeaSTAR, OSCAR is an active microwave Synthetic Aperture Radar Along-Track Interferometer (SAR-ATI) with optimal three-azimuth sensing enabled by unique highly-squinted beams. In May 2022, OSCAR was flown over the Iroise Sea, France, in its first scientific campaign as part of the ESA-funded SEASTARex project. The campaign successfully demonstrated the capabilities of OSCAR to produce high-resolution 2D images of total surface current vectors and near-surface ocean vector winds, simultaneously, in a highly dynamic, macrotidal coastal environment. OSCAR current and wind vectors show excellent agreement against ground-based X-band radar derived surface currents, numerical model outputs and NovaSAR-1 satellite SAR imagery, with Root-Mean-Square differences against X-band radar better than 0.2 m s-1 for currents at 200 m resolution. These results are the first demonstration of simultaneous retrieval of total current and wind vectors from a high-squint three-look SAR-ATI instrument, and the first geophysical validation of the OSCAR and SeaSTAR observing principle. OSCAR presents a remarkable new ocean observing capability to support the study of small-scale ocean dynamics and air-sea interactions across the Earth’s coastal, shelf and polar. 
PY 2024
PD JAN
SO EGUsphere
PU Copernicus GmbH
DI 10.5194/egusphere-2023-2995
ID 98149
ER

EF