Paramtres de surface ocanique par tldtection Oceanic surface

Paramètres de surface océanique par télédétection Oceanic surface parameters by remote sensing Dominique DAGORNE – IRD – Centre de Bretagne – US 025

Aim : For the « final » users, collection of the main products of oceanic surface parameters obtained by remote sensing - products SST , SSR ( « color » ) , « wind » , « topography» (futur (2008 ? ) : Salinity) - delivery : Delayed Time : DT (historical) /Near Real Time : NRT (operationnal ? ) - spatio - temporal scale at the best «résolution » (? ) hourly - daily – weekly – monthly - … climatology local – regional – global studies areas : ocean east boundary systems (Upwelling) Equatorial Atlantic (EGEE/AMMA) others requirements : Pacific , Indien, mediterranean, . .

USING Observation - temporal analysis of parameters : values, anomalies, indexes, ( ex CUI) temporal plot , transect space – time (hovmoller) : advanced data analysis : EOF, wavelet, . . Modelisation - Validation : sparse in-situ data (ship, buoys, . . ) - Forcing parameters : monthly climatologies , 8 days SST, daily wind, . . Derived products - others « satellite » products of interest : radiative fluxes, clouds , aerosols, . . - Turbulent fluxes (latent – sensible) and net balance

SOME DEFINITIONS Satellite DATA and PRODUCTS : level 0 : « raw » satellite measurement obtained in « direct read out » receiving station level 1 : L 0 démultiplexed (DN) radiance + parameters : calibration, navigation, time, . . level 2 : calibrated data « Top Of Atmosphere » reflectance (VIS, NIR) – brighness temperature (Tb) (IR, MW) (geo)localisation - « cloud mask » level 3 : surface (or atmospheric) geophysical parameters obtained by (complex) modelisation of satellite data. ( direct-inverse problems - others data : meteorological ) - atmospherics effects ( angles , water vapour, . . ) - primary products : ex : SST , Nlwr i, . . - surface effects ( marine optics , emissivity, rugosity, . . ) - secondary products : ex : « color» ( CHLa, PAR, . . ), wind, . . « instantaneous » cartographic restitution level 4/5 : level 3 multitemporal composite (synthesis) by (M)hours, (N) days , week, month ex : daily Mean Wind Field , 3 days SST , Weekly CHLa « synthesis » products obtained by merging and interpolation ex : global interpolated SST, Primary Production (CHL, SST, PAR, . . )

CONSTRAINT (1) Physics of measurement Remote sensing : long distance electromagnetic spectrum observation of earth - atmosphere system by a couple vector-sensor Depending of collector (telescope-antenna) detector (Signal / Noise ) spectrum (width, window, absorption, diffusion, . . ) instant (Day/Night, viewing - solar angles, . . ) atmosphere : Temperature, Humidity, CLOUDS , aerosols, ozone, rare gas surface : reflectance , emissivity, temperature, . . direct communication – on-board recording Passive surface observation domain : window channels (radiometer) - « refectivity » : 0. 4 -4 mu : Visible – Near Infra-Red VIS/NIR (0. 5 – 1. 2, 1. 6 mu) Mean Infra-Red MIR ( 3. 6 mu) - « emissivity » : 3 -15 mu : Thermic Infra-Red TIR ( 10 -12 mu) Micro-Wave MW ( 10 – 21 – 37 - 85 – 150 Ghz) Active : radar micro-wave (scaterrometer, altimeter)

CONSTRAINT (2) Sensor(s) – Vector system Orbit satellite : - polar heliosynchronous ( ~ 800 km) – equatorial 2 pass by day : ASCending/DEScending orbits (latitude effect) - geosynchronous (~ 36000 km) : fixed earth observation Sensor : optical (VIS-NIR, TIR) : nadir scanning wide viewing fields for global environnement ( # narrow viewing for earth observation ) antenna ( passif MW ) : lobe – conical scanning Détector : spectro - radiometers (CCD) : surface imager (window) - vertical atmospher sounding compromise between channel bandwidth – channel number and résolution weight / volume - power ( actif radar ) on board archiving - transmission capabilities

CONSTRAINT (3) acces and distribution ( cf « level » . . Data - Product) Scale – résolution Spatial : global (100 -10 km) / regional (10 -1 km) / local (< 1 km) local acquisition et preprocessing : receiving station (ex : NOAA/HRPT) archiving – distribution (Global/Regional DAC ) opérationnal ( WHO ? ? ) temporal : month / week / instantanneous ( day / hour) - delivery (DT/NRT) Quality « processing » validity ( preprocessing from level 0 to level 4 ) calibration – navigation – cloud – geophysical algorithm (ex : SST) « practical issues » software : (I/O : « data format » ) – environnement « standards » : raw / net. CDF / HDF /. . . - software tools : matlab / IDL /… consultation (WEB-LAS) - transfert (ftp) distributed or local processing (Open. DAP)

CONSTRAINT (4) history : mécanics (rocket - satellite) électronics – computing (telecom – archiving - processing, . . ) 1972 (LANDSAT) for earth observation météorology – environnement : 1978 (TIROS-N (NOAA)– GOES/ Meteosat 1 ) ) operationnals agencies : NOAA – EUMETSAT – JMA – CMA : operationnal POES : Polar Orbiter Environnement System NOAAi ( now 18) – METOP (07/2007) – (FY- i) DMSP ( SSM/I) (Navy , USAF, . . ) GOES : Geosynchronous , , GOES-N , Meteosat (Met 8 -MSG) , GMS, (FY- i+1) scientifics agencies : NASA – ESA – JAXA : experimental SEASAT (SAR - SMRR), NIMBUS (HCMM-CZCS)-Orbview (seawifs) ERS 1 -2 (wind) , JASON – T/P (altimetry) ENVISAT : MERIS, …, EOS (Acqua-Terra. . ) : MODIS, AMSR, . . TRMM/TMI - SMOS

AVAILABLE PRODUCTS FOR OCEAN - SST : Sea Surface Temperature - SSR : Spectral Surface Reflectance or « color » : Normalized leaving Water Radiance by channel CHLA, attenuation (Kxx), CDOM, MES, FLH, optical depth, PP. . - « wind » : speed modulus – direction - components - stress - « altimetry » : Sea Level Anomaly ( / mean ) , derived product : currents, eddies, . . - restitution technics - sources - résolutions - history - limitations

Sea Surface Temperature (1) 1972 : Thermic Infra-Red channel using channel 10 -12 mu : atmospheric transparent window for TIR Planck law : Radiance Brightness temperature (Tb) Top Of Atmosphere 1978 – atmospheric correction « Water Vapour » « Skin » temperature differential absorption : « Split Window » algorithm ( sea emissivity = ctse , WV weak ) Radiative transfert modelisation (MODTRAN) + atmospheric models (R. S. : PTH , aerosols, angles, . . ) + expérimental adjustement by satellite , day/night with in-situ measurement (buoys) global / local processing (geographic, temporal ) CLOUD MASKING problem (atmospheric preprocessing ) VIS (day ) et MIR-TIR (day – night ) channel using outside satellite datas (WV) and/or meteorological analysis/forecast SST climatology – « local » atmospheric methodology Vectors Polar heliosynchronous - ~ 3000 km by swath 2 pass / day : ASCending – DEScending - resolution 1 km Géosynchronous : acquisition 30 mn (15 mn) – fixed geometry temporal synthesis : 3 H – 12 H - resolution ~ 5 km ( 3 km)

Sea Surface Temperature (2) NOAA-AVHRR : Advanced Very High Resolution Radiometer ( POES : NOAA-METOP ) 5 channels VIS/NIR /MIR - 2 TIR ( 11 – 12 mu for atmospheric correction) - NRT : acquisition HRPT/LAC (bande L) Level 0 - preprocessing ( L 1 b, L 2) ~ 2000 km around receiving station – 2 (N) orbits/day - satellite ( latitude) ~ nominal 1 km ( ~ 5 km side ) – L 3/L 4 SST reprojected / synthesis (D, W, M) ex : Europe ( SAF OI-Medspiration – 2 km ) : NAR-SST , local receiving stations - DT : global recording « on board » (GAC) - ~4 km subpoint historical re-processing ( calibration, cloud, quality , synthesis, . . ) Path. Finder (PF) PO-DAAC 1985 – 2004 : - V 4 : 9 km / V 5 : 4 km - daily ( night SST) Physical Oceanography – Distributed Active Archive Center - NASA EOS (Terra-Acqua) – MODIS (spectro-imager 32 channels VIS/NIR – MIR – TIR – 1 km ) NRT : acquisition (Bande X) + (pre)processing + distribution ex : Europe : NERC : Dundee (acq) + PML/RSDAS (océano) DT : 07/2002 (Acqua only ) – present NASA – JPL : Ocean. Color (J-2) : day – 3 D - week – month day SST data ( with « color products » )

Sea Surface Temperature (3) MSG+GOES : geosynchronous ; Atlantic + South East Pacific coverage NRT – DT : SAF-OI / EUMETSAT ( Météo-France / CMS Lannion) Atlantic MSG : 07/2004 ( GOES : 07/2001) 3 H synthesis (synop) – 12 H ( night – day ) ; 10 km resolution 1 H SST + flags – 5 km resolution rigourous cloud mask ( SAF-NC) + SST algorithms product : Medspiration : EU / GHRSST-PP ( with NOAA-AVHRR 2 km local) GOES/NOAA : 6 km resolution Others SST sources ENVISAT/MERIS : spectro-imager 15 channel VIS-PIR / MIR / IRT – 1 km ~ MODIS : multi-usage ( ocean, continent, atmosphere) ENVISAT/AATSR : bi-angular correction 1 channel - scientific product Project : GHRSST-PP comparaison / validation ( buoys – inter satellite ) : Match Data Base SST skin-bulk - diurnal heating ( wind , solar flux) – WV/aerosols climatologies

Sea Surface Temperature (4) Passive Micro. Wave (MW) measurement. . ( Heritage from DMSP-SSM/I (1988)) « bulk » SST restitution by simultaneous MW channels (10. 7 GHz for SST ) atmospheric interaction ( TWV, PWV, RR: rain ), surface (wind), SST, . . NB : - Sea Surface Salinity (1. 4 Ghz – interferometry ) by SMOS / ACQUARIUS (2007 ? ) TRMM/TMI Tropical Rainfall Measurement Mission – Microwave Imager : 1998/12 « equatorial » orbit 40 N-40 S EOS-ACQUA/AMSR-E : Advanced Microwave Scanning Radiometer : 2002/07 polar heliosynchronous (pb in some countries : radio frequency pollution) NRT/DT : REMSS (ssmi. com) / NASA daily ( ASC/DES) - synthesis : 3 days / week/ month no clouds limitations - resolution : ¼ deg (~ 25 km ) limitations : precipitation ( rain droplet interaction ) near coast ~100 km (continent –Island ) from MW emissivity

SST AVHRR global (Path. Finder) Daily ( orb desc) – Weekly Global daily Analyzed product with number and age observation

SST AVHRR local - regional – 2 km 4 pass ( 2 satellites NOAA 16 -17)

SST AVHRR 2 km September 2002 3 Weeks Monthly Source : SATMOS Météo-France

ATL- SST MSG-GOES Daily 10 km

ATL-SST MSG-GOES 12 hourly (day) 10 km ( but 3 km « raw » Hourly - MSG Intermediate product )

SST - MW Resolution ~25 km Daily TRMM/TMI Orb ASC/DES 1 day 3 days synthesis AMSR-E/ACQUA 3 days synthesis

SSR Spectral Surface Reflectance - « Ocean Color » (1) Interaction of incidente light with particules in suspension in water : Phytoplancton , Dissolved Organic Matter (DOM), suspended matter (MES) Measurement : Radiance values in several VIS channels (narrow bandwith ) - hight atmospheric sensibility (diffusion) et CLOUDS - complex atmospherics corrections : WV, ozone, viewing-solar angles , « sun glint » - experimental bio-optical algorithms Nlwr i : Normalized Leaving Water Radiance , band i ( 412, 443, 488, 510/530, 550, 670 mu) CHL : Chlorophylle-a (many algorithms) ocean/coastal : OC 4 (seawifs) – OC 5 (MODIS) , others : ocean ( turbidity , CDOM, MES). . . et atmospheric parameters ( PAR, aerosols : AOT, rayleight, . . ) IOP : Inherent Optical properties , FLH : Fluorescence Line height (photosyntetic efficiency) PP : Primary Productivity Satellite Receiving signal is 80% from atmospheric sources (outside clouds ! )

Top Of Atmosphere Radiances ( Lsat) Atmospheric Radiative Transfer Model Normalized Water Leaving Radiance (Nlwr) – channel i Photosynthetic Ocean Color Algorithms Photosynthetic Available Radiation (empirical/semi analytical) efficiency (PAR) solar (0. 4 -0. 7) ( empirically from SST) Sea Surface CHLa concentrations Primary Production model Higher level model (export production, carbon sequestration, fisheries, )

SSR - « Ocean Color » (2) Vector : heliosynchronous polar orbiter (geosynchronous project : GOES-R . . 2010 ? ) 1 pass / day ( day orbit ) Sensor : CZCS (NIMBUS 7) : Coastal Zone Color Scanner . . For memory ! Sea. WIFS (orbview 2) : Sea-viewing Wide Field of View Sensor 1998 -2004 MODIS (EOS) : Moderate Resolution Imaging Spectroradiometer TERRA (11/1999) – ACQUA (07/2002) RT : LAC : acquisition idem SST (NOAA, MODIS) Level 0 / 1 b , specifics (pre)processing Level 2 resolution : 1 km , ex : DUNDEE/RSDAS , local receiving station NRT - DT : archiving – distribution all levels + other data + validation + software NASA/GSFC http: //oceancolor. gsfc. nasa. gov Level 1 -2 : by orbit et preprocessing (seadas) level 3 -4 global: resolution 9 km (Sea. Wifs) ; 4 and 9 km (MODIS/ACQUA only) Products : Nlwr i , CHLa, K 490 (att) – Tau-XX , angstrom + Cloud-Angle-Continent mask «experimentals products » : CDOM Color Dissolved Organic Matter (yellow substance) CWE clear water epsillon, CFI/FLH : chlorophylle fluorescence, DCC: cocolyth concentration PAR : Photosynthetically Available Radiation , PP : Primary Production daily (1 orbit) and synthesis basis : 3 days, weekly, monthly

SST 1 Day 3 Days 1 Week 1 Month simultaneous SST/CHLa MODIS 4 km NASA/GSFC (http: //oceancolor. gsfc. nasa. gov) CHLa

CHLA MODIS 4 km 1 W – 1 M south HUMbold (http: //oceanwatch. pifsc. noaa. gov/

« Wind » (1) Micro-Wave measurement ( MW) - passive (radiometer) : simultaneous mesures (Tb) in several MW channels only speed modulus ( inversion brightness temperature and experimental adjustment ) Sensor/vector : DMSP/SSM-I, TRMM/TMI, ACQUA/AMSR-E - active (scatterometer) backscatter measurement of surface ruguosity radar wave emitted and reflected by the surface (stress) wind speed and direction (component) Sensor/vector : Seawind/Quick. SCAT , ERS 1 -2/AMI , 2 pass/days (ASC/DES) level 3 (instantaneaous ) Operationnal : day/night , under clouds (except précipitation) Limitations : heavy rain - coast (continent, island ) ~ 100 km daily « gridded » products by par optimal interpolation in space and time QS 3 D : ssmi. com - MWF : Mean Wind Fields CERSAT /IFREMER resolution 0. 25/0. 5/1. 0 degres , daily and weekly, montly synthesis (means) Parameters : meridionnal –zonal components , stress , errors , curl/rotationnal

« Wind » (2) Only one provider NASA/JPL ( Quick. Scat ) End of ERS 1 -2 (2001) et failing of NSCAT/ADEOS Projet METOP/ASCAT (2006 ) -------------- double swath scaterometer archiving – diffusion centers PO-DAAC CERSAT/IFREMER http: //www. ifremer. fr/cersat SAF-OI/KNMI – EUMETSAT ssmi. com : passive ( SSM-I , TMI ) active (QS) Products « swath » Level 2 a/b et « gridded » L 3/L 4 (MWF) colocated ( buoys ) - Precipitation and Ice detection - Ambiguity direction - Monitoring ( unique and multi instruments ) three antennas: a fore-beam - mid-beam - aft-beam In its nominal operation, the instrument will yield wind vector measurements in 50 km resolution cells. It will be capable of measuring wind speeds in the range 4 – 24 m/s with an accuracy of 2 m/s or 10% and wind direction in the range 0 – 360° with an accuracy of 20°. On an experimental basis, the instrument will provide measurements at an enhanced resolution of around 25 km.

ASC/DEC daily swath and orbit (benguela)

Module vitesse QS – CERSAT/IFREMER – daily Module vitesse – AMSR-E ssmi. com - daily Direction-stress QS CERSAT/IFREMER – monthly Daily , Weekly and Monthly « gridded » products

« altimetry» (1) L'altimétrie spatiale est une technique permettant de mesurer des hauteurs par satellite. Elle utilise le temps mis par un faisceau radar pour faire l'aller-retour satellite-surface, associé à une localisation précise du satellite, pour effectuer ses mesures. Principe de l'altimétrie L'altimètre émet une onde radar et l'analyse après réflexion sur la surface. La hauteur de mer est égale à la différence entre la distance satellite - surface (déduite du temps mis par l'onde pour faire l'aller-retour) et la position du satellite par rapport à une surface de référence arbitraire (l'ellipsoïde de référence). Des systèmes de localisation comme Doris permettent une précision extrême sur cette position du satellite en orbite. Il faut aussi tenir compte de la moindre perturbation subie par l'onde radar. La mesure de ces perturbations (par des instruments annexes, ou par l'utilisation de plusieurs fréquences), ou leur estimation par des modèles, permet de corriger la mesure altimétrique. distribution , archivage : AVISO-ALTIMETRIE (http: //www. jason. oceanobs. com/)

« altimetry » (2) Satellite (polar) : Jason-1 , Topex/poseidon, ENVISAT , GFO (Geosat follow-on) Produits « gridded » level 4 (et +) MSLA : (Map Sea level Anomaly with climatologie 7 years climatology résolution 1/3 degres NRT et DT , mono et multi-missions SLA : along the swath – multi satellite cor. SSH : monomission , le long de la trace wind – wave : MSWH-MWind swath and gridded (1 deg) surface currents : derived from anomalies Research of the best spatio-temporal sampling for phenomenas monitoring (ocean dynamic) Altimetrics height cover by swath in north-east Atlantic obtained by T/P, ERS-2 et GFO, on 10 , 7 and 3 days observations we observed en gap of 200 km and more with 3 days synthesis Combination of all missions allow a better cover

DISPONIBILITY ( US 025 – IRD Bretagne ) – Global cover SST PFV 4 – 9 km – monthly /week : 1985/01 - 2003/07 month climatologies 85 -03 et anomalies SST PFV 5 – 4 km – day/8 days/month : 1985/01 – 2006/12 monthly synthesis : mean / min / max / std / number of clear sky pixel (nbp) SST MODIS – 4 km – daily/week/month : 2002/07 – present (*) SST SAFO – 10 km – 2/day - : 2004/07 – present (zone ATL) (*) exp : 1 H resolution SST METOP – 10 km – 2: day – 2007/10 – present (*) - exp : 1 km by swath part SST TMI – ¼ deg (25 km) – daily (3 d) / week / month : 1998/01 – present (*) AMSR-E (2002/07 CHLA Sea. WIFS : 9 km – 8 days / month : 1997/09 – 2006/12 CHLA MODIS : 4 km – jour / (3 days) / 8 days / month : 2002/07 – present (*) MWF Quick. Scat (QS) ½ deg - day/week/month : 2000/05 - present MWF ERS ½ deg week/month from 1992 - 2000 : 1 deg ) QS 3 D ¼ deg – weekly/daily : 1999/05 – present (*) QS 1 D daily Ascending-Descending (*) MSLA-H (UV) « merged » 1/3 deg - 7 days : 1992/10 – present (*) : daily acces for Near Real Time ( delay : 1 – 2 days )

PROCESSING - Decoding the « raw » products (format, resolution, coverage) temporal (begin-end) and spatial extraction by zones - « 3 D matrix » datas organized in { TIM – LAT – LON - PARi } analysis et « processing » of scientific « image data » internal format (matlab) et net. CDF for export use - multi-media « image representation » for publication (WEB) cartography – scale phenomena – text - animation - developping an « generic » analysis data interactive tools viewing value « parameter » lat-lon (carto) , plot pixel val- tim plot space – time diagram ( hovmoller) - processing climatologies (means ) – anomalies synthesis : temporal agregation by N days fixed or slick period analysis : EOF , . .

PROCESSING . . In projects WEB site consultation . . In progress ? ? ? Synthetics indexes Automatic Near Real Time Daily extraction SST : TMI / SAFO / MODIS CHLA : MODIS (3 D) WIND : QS (3 D) transfert – decoding – processing – consultation ex : monitoring oceanographic campaign EGEE in Guinea Gulf 2005 06 -09 daily data on upwelling zones ne. CDF writing format net. CDF Generic tool using : ferret , ncview , nco Specific developping software tools for « users » IDL/matlab

ZONES DEFINITION (not fixed) Regionals : CANaries , BENguela , HUMbold , MOZambique, (CORail), . . Locals : MARoc, SENégal, SBE (South Benguela), PERou, . . And EGE

1 rst Exemples : Sea. WIFS 8 Days Log CHLa sur zones UPwelling

screen copy interactif analysis tools Cartographie et plot « time » Coupe espace – temps

SST PFV 5 ( 4 km) Quality Analysis Ind=0 brighness Temp Ind=4 OK (!) Ind=7 sévère

Monthly climatologies et anomalies - SST PFV 4

PERou daily MODIS (4 km) Vs SAFO ( 10 km) CANaries daily MODIS (4 km) Vs SAFO (10 km)

Daily South BEnguela PFV 5 (4 km) Vs MODIS (4 km) Daily SENégal MODIS (4 km) vs SAFO (10 km)

MONTHLY OBSERVATIONS BENguela 2004/07 MODIS SAFO TMI AVHRR (PF)

DAILY OBS. CANaries 2004 12/25 AVHRR SAFO TMI MODIS

SST SAFO (10 km) : daily 01 -06 / 02 / 2005

BENguela CHLa Sea. WIFS clim 8 D (2004/12/345 -352) CHLa MODIS month 2004/12

Historical and « operationnal NRT » Level 3 (and +) available : ( free of charge for scientific use : NASA/NOAA/EUMETSAT(? ), . . = SST : various choices of spatio-temporal resolution - DT : 9 km-4 km /mois ( 1985 – 2003) 4 km / day ( AVHRR : PFV 4/5 – MODIS ) + synthesis (1985/2000 – 2004) - RT : direct read-out and preprocessing : AVHRR – MODIS 1 km internet : MODIS / day 4 km - SAFO ( MSG+GOES) 10 – 5 km ( 2004/07) AVHRR/METOP 10 km (1 km) ( 2007 -10) - TMI ( AMSR-E) : 25 km (1998 ) CHLa (others parameters ? ) - DT : 9 km Sea. WIFS ( 1998 -present) / month – 8 D - MODIS 4 km ( day, 3 D, 8 D, mm) 2002/07 - NRT : direct read-out / internet + processing MODIS 1 km global 4 km / day (07/2002) « wind » : speed modulus and direction (stress) component (CERSAT/IFREMER) -DT (5 -8 days ! ) Quick. Scat 01/2000 - « gridded » product daily – ½ deg - NRT daily swath (ASC/DES) or 3 D composite (REMSS) MSLA : DT / NRT AVISO altimétrie « merged » 1/3 deg - 1992 - present

CONCLUSIONS - Sources complementarities résolution – history – scientific monitoring archiving specific center by instrument distribution par order of increasing complexity : SST, color, wind, altimétry emergence of specialized center for thematics using cf : Coast Watch (NOAA/US) operationnal oceanography - SST (CHL) : local (pre)processing high resolution (1 km – polar satellite ) from : RT acquisition (level 0) : receiving station ( tracking antenna, . . ) NRT internet transfert (level 2) if high speed telecomunication link NRT level 3 -4 by internet -Opérationnality ? Utilisation (scientific, commercial) - Satellite SST Polar orbiter : SST IRT maximal resolution but (very) low spatial cover due to Clouds Micro-Wave (and atmosphère ) for global-régional scale Geosynchronous : SST with high declouding capability - MSG/GOES 1 H – 5 km

SATELLITE OBSERVATION DURING EGEE 3 1 During cruise on area « EGE » by mail ( 3 vac/day) - SSTs : TMI (MW) and SAFO (IR) . . Pb on SSTSAFO since 05/24 …oops !! SST SEVIRI 3 H composite day ( 01 – 13 H ) - CHLA Modis (3 days synthesis) - Wind : Quick. Scat 3 D MSG viewing in VIS, MIR, TIR and WV channel (satmos. meteo. fr : CNRS/M-F) Clouds identifications, meteorological situations, . . Others : some Seawifs / MODIS «true color » 2 - All historical data will be archived Previous presented . . SST , SSR , wind, CHL , . . « altimetry » -DLI / SSI : Downward Longwave Irradiance / Solar Surface Irrdiance from MSG - SSM/I orbits (latent and sensible heat flux )

SST daily product 2005/06/21 - M-F CMS Lannion AMSR/E – SEVIRI/MSG – AVHRR/GAC – AATSR

Daily Atlantic Products SSTs : TMI – MODIS –SAFO CHL - wind SSI – DLI

On disk « MISSION Satellites» -SSSTTMI - SSTSAFO – SSTSEVIRI - CHLMODIS – WINDQS MSG IRT/MIR/VIS/WV -daily directory : YYYY-MM-DD -product : -monthly : historical -EGEE 1 : 2005 05/24 - 07/03 -Daily SST TMI - Animation - poster AMMA DAKAR 200/12 -NAAPS : » Navy » Aerosols Products ( seawifs / modis ‘true » color » images)

DAILY : SSTTMI –SSTSAFO – wind – CHL

PRODUCT SSTTMI 05/16 05/20 05/23 05/26 05/30 06/02

PRODUCT SST SEVIRI 3 H composite 11/05 13: 00 12/06 01: 00 12/06 13: 00 14: 06 01: 00

DAILY MSG 12: 00 VIS MIR IRT WV

DAILY MSG IRT 00: 00 06: 00 12: 00 18: 00

« COLOR COMPOSITION » VIS/IRT VIS : bright / dark Clouds : hight / medium / low – Dust IRT : hot / cold Sea – Continent (forest, desert, . . )

MODIS ‘true color » 2006/06/01