GeOCAPI Proposal for Earth Explorer 9 European Space Agency ESA 24 June 2016 David Antoine amp David Doxaran Laboratoire dOcéanographie de Villefranche UMR 7093 CNRS UPMC ID: 1026644
Download Presentation The PPT/PDF document "EUROPEAN PROSPECTS ..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
1. EUROPEAN PROSPECTS FOR A GEOSTATIONARY OCEAN COLOR SENSOR: THE OCEAN COLOR ADVANCED PERMANENT IMAGER (GeOCAPI)Proposal for Earth-Explorer 9, European Space Agency (ESA), 24 June 2016 David Antoine & David Doxaran*Laboratoire d’Océanographie de Villefranche UMR 7093 CNRS / UPMC*On behalf of the OCAPI Scientific Group
2. What can we do with GeOCAPI?1. The 1st objective in this case is to study the ocean ecosystem functioning at the diurnal scale. The diurnal cycle of photosynthesis / respiration .. generates a diel cycle in the particulate pool, hence of the optical properties and of the recorded signal2. The 2nd group of objectives is related to observation & understanding of rapidly evolving phenomena (tidal cycles, river outflows, aerosol plumes, phytoplankton blooms, (sub)meso-scale features ..). These phenomena are not necessarily linked to the biological functioning, and rather under the influence of physical forcings3. When the conditions of observation do not allow the diel changes to be sampled, the 3rd objective will be to dramatically improve coverage, with at least one observation of good quality per day in many areas (required for all operational uses, from data assimilation into coupled biological-physical 3D models)
3. Where GeOCAPI comes from …? First proposal submitted to ESA in 2002 (“BIOGEOSAT”): 1 GEO-sensor + a constellation of 3 micro-satellites…. (“Earth explorer call”). A number of studies carried out and still ongoing to assess the feasibility and interest of GEO ocean color observations (for GOCI with KORDI, with CNES, ASTRIUM). Proposal submitted to CNES in 2008 high priority: birth of “GeOCAPI”. Proposal submitted to ESA (8th “Earth Explorer” call) in June 2010: not selected (budget and launcher) but excellent scientific evaluation. Other proposal was submitted to ESA in 2011, called HOCI “Hosted Ocean Color Imager”: OLCI-like sensor on a commercial telecom platform. Pre-Phase A starts at CNES in 2014 to further define the concept (ADS &TAS). A quite mature proposal submitted to ESA “Earth Explorer 9” 24 June 2016
4. parametersSpectral bands (wavelengths in mm)Band nameHRVVIS 0,6VIS 0,8SWIRIR 3,9WV 6,2WV 7,3IR 8,7IR 9,7IR 10,8IR 12IR 13,4wavebandVIS0,5-0,9VIS0,6-0,7VIS0,7-0,9IR1,5-1,8IR3,5-4,4IR5,3-7,1IR6,8-7,9IR8,3-9,1IR9,4-9,9IR9,8-11,8IR11-13IR12,4-14Spatial resolution under the satellite1 km3km3km3km3km3km3km3km3km3km3km3kmFeasibility of GEO ocean colour observationsSEVIRI sensor onboard Meteosat Second GenerationImages every 15 minutes~36 images over daytimeNeukermans et al. (2009, 2012)
5. Feasibility of GEO ocean colour observationsGOCIDevelopped by ASTRIUMOnboard COMS satellite platformData since 20118 images a day (9h to 16h, local)http://kosc.kordi.re.kr AgencyKARI/KORDISatelliteCOMSLaunch date26 June 2010Swath (km)2500Resolution (m)500Nb of bands8Spectral range (nm)400-865GOCI-2…
6. Feasibility of GEO ocean colour observationsNeukermans et al. (2009, 2012)
7. GEO observations of river plumesOdy et al. (2016)HIGHROC project
8. GEO observations of river plumesDaily dynamics of the Gironde River plume (microtidal estuary, Bay of Biscaye)Derkacheva et al. (2016)HIGHROC project
9. Daily (tidal) dynamics of suspended sediments10:1611:1612:1613:1614:16010SS (g/m3)High tideFlood tide Flood tide Ebb tide Ebb tide GOCI observations over tidal environmentsSource: KIOST
10. Kheireddine & Antoine (2014)Daily cycles in open ocean watersAverage diurnal variability at BOUSSOLE
11. GOCI and in situ observations of daily Chla increaseDoxaran et al. (in prep.)Chla concentrations derived from (i) GOCI satellite data (Wang et al. 2012 algorithm) and (ii) in situ fluorescence data recorded on profiling floats in the East China Sea
12. The GeOCAPI projectObservation of full disk (ocean + coastal) 1h temporal resolution 250m spatial resolution at nadir13 spectral bands (412 – 1020 nm)High compatibility with S3-OLCI
13. GeOCAPI projectSPATIAL COVERAGEMean (left) and max (right) daily observations, for two LEOs complemented by OCAPI in March, June and December (top to bottom). (based on realistic cloud coverage climatology)
14. The GeOCAPI project: technicalSpherical radiative transfer code developped by the FMI and ran by ACRI-ST as GeOCAPI simulatorBoth TAS & ADS developped operationnal concepts that fulfill the EE-9 requirements (250 k€, HPL) to launch the GeOCAPI mission within the 2023-2025 periodThank you for your attention!Questions?