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UPWELLING COMPARATIVE ATLAS PHYSICALS DATA FROM REMOTE SENSING D. DAGORNE IRD – Centre de Bretagne US025 : Interventions et à la Mer et Observatoires Océaniques.

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Presentation on theme: "UPWELLING COMPARATIVE ATLAS PHYSICALS DATA FROM REMOTE SENSING D. DAGORNE IRD – Centre de Bretagne US025 : Interventions et à la Mer et Observatoires Océaniques."— Presentation transcript:

1 UPWELLING COMPARATIVE ATLAS PHYSICALS DATA FROM REMOTE SENSING D. DAGORNE IRD – Centre de Bretagne US025 : Interventions et à la Mer et Observatoires Océaniques

2 Context : UR097 / ECO-UP -Comparative Atlas. Upwelling ecosystem functionning by comparison of statics and dynamics elements from « historical » existing data. data worksheet and graphics animated or fixed images from observations and modeling synthetics indexes - Operationnal « server » for data in near real time (NRT : few days or week ) providing caracteristics indexes of ecosystem state. Beginning by products from remote sensing (satellites imagery) : SST(s) - CHL - wind - ( altimetry) and derived indexes. Fixed and animated plots and maps from climatologies, NRT data, anomalies and indexes to quantified present upwelling state and historical evolution. Simulation results for forecast.

3 Others IRD requirements -Oceanic observatory from satellite for different research units Atlantic Ocean ( African Monsoon experiment) : Guinea Gulf Indian Ocean – Mozambique channel Western Atlantic – Amazon/Carabiean -Oceanograhics cruises survey ( with data distribution « on board » ) EGEE in Guinea Gulf ( may/jun and september/october 2005 - 2007) Indian Ocean ( in january-february 2007) -Educationnal and training projects for developping countries. data – « know how » (software) – RT acquisition & preprocessing

4 Data from Level 3 (bio-geophysical products) by remote sensing « providers » measurement quality spatio-temporal resolution and granularity ( « composite » time) beginning-ending period,.. « real time » accessibility - new facilities : Sea Surface Temperature (SST) Sea Surface Reflectance (SSR or « Color ») Wind : modulus / direction Altimetry Others : Water Vapour – radiative (SSI/DLI) and turbulent (LHF/SHF) fluxes precipitations (poor resolution) – salinity ( 2008 ??)

5 -SST from Infra-red ( clouds !! : detection – boundaries (in upw areas ) ) Polar orbiting ( 2 pass ( day-night) by day ) AVHRR/TIROS-N/NOAA 1985 – 2003 (2005) PathFinder V4 (9km) / V5 (4km) – MODIS/EOS/NASA ( ACQUA) : 07/2002 - present ( with SSR) twice daily ( PFV5) / 3 days (MODIS) / weekly / monthly / clim Geosynchronous Eastern Atlantic : Meteosat (MSG) EUMETSAT - 07/2004 Western Atlantic – South East Pacific : GOES -NOAA : 2002 hourly – daily « composite » (3H -12H – 24H) - 10 / 5 km - SST From Micro-Wave (*) (low resolution : 25 km – continental/island areas ) TMI : 01/1998 ( 40 deg latitude limit) - AMSR/E : 07/2004 daily / 3 days / weekly / monthly / clim (*) and others products : IWV (integrated Water Vapour) – WSP (Wind Speed)

6 - Sea Surface Reflectance from narrow band visible spectrum (day) observation - polar orbiter (1 / day ) daily ( ?) / 3 days ( MODIS) / weekly / month / clim - NLW : Normalized Leaving Water irradiance band heavy constraints effects : Clouds - aerosols – WV - angles (sun, view) - « standards » bio-optical products : CHLa - Absortion Coef (K490) -. - «experimental» developpement : CDOM/SM – «regional» CHLa – FLH/PP SeaWIFS 9km : 01/1998 – 12/2004 - / MODIS (with SST) 4 km : 07/2002 CZCS ( pathwork areas :.. 1978-1984) -Wind retrievial from scaterrometer on polar orbiter ( 2 orb / day ) -ERS (ESA) 1992- 2002 ; 1deg - QuickScat (NASA) : 1999-present : 0.25 /0.5deg « Mean » Wind Fields by « interpolation » 1 day /3 days / week / month - Altimetry from Topex/Poseidon « merged » product ( CLS) – weekly SLA : Sea Level Anomaly – ADT : Absolute Dynamic Topography

7 -Working steps Sate of « art » : providers, quality, data format, software,.. acces / archiving all the usefull data extraction software for various sources (format) area-period data (3D cube : lat-lon-tim) in netCDF analysis software : interactive wiewing, « QuickLook » production multitemporal analysis (EOF,..), plot – time/space diagram indexes ( with cartographic requierement : bathy) WEB « navigation » historical data : climatologies – monthly and anomalies Automatic Daily Near Real Time on somes areas ‘UPWelling Atlas » ( C. Mullon) Next : historical and NRT indexes extraction generic approach software tools for « users» requirements data (format – area – period) – analysis

8 UPWELLING ATLAS Period : 1998/01 - 2004/12 ( SST PFV4 : 1995 - SLA : 1992) Climatologies – Monthly ( Anomalies ) - Weekly (octad) SST : TMI (remss) - AVHRR/PFV4-V5 (NASA/PO-DAAC) CHLA : SEAWIFS ( NASA/GSFC ocean color ) WIND : MWF QuickScat (IFREMER/CERSAT) SLA : merged T/P ( CLS ) NEAR REAL TIME daily Huge work !!.. Beginning 2005/10.. In progress SST : TMI -3 D (1D) – MODIS-3D (1D) MSG/GOES hourly - 12H night composite (EUMETSAT-SAFO) CHLA : MODIS-3D WIND : QS-3D (1D - twice) (remsss - NRT facilities)

9 UPWELLING AREAS – global areas 40 deg lat – 25 deg lon extension

10 « QUICK-LOOK » FILE – (MONTHLY- WEEKLY) / ANIMATION

11 WEB SCREEN SNAPSHOT – MONTH 4PAR

12 WEB SCREEN SNAPSHOT - MONTH 4ZON

13 Near Real Time Day-1 / Day-2 « global » Upwelling areas Next slide Local areas

14

15 INTERACTIVE SOFTWARE ANALYSIS TOOLS – ex SLA

16 NEAR REAL TIME – MODIS SST-CHL DAILY PROCESSING From level 2 (1 km) swath data - 2006/11/25

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