The MedArgo program and SMOS validation in the Mediterranean Sea

Transcription

1 The MedArgo program and SMOS validation in the Mediterranean Sea by Pierre-Marie Poulain (OGS, Trieste) Jordi Font (ICM, Barcelona) Srdjan Dobricic (INGV, Bologna)

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3 The Mediterranean Operational Oceanography Network-MOON MOON main goals are: To consolidate the operational observational/modelling system in the Mediterranean To demonstrate the usage of the marine environmental prediction system for integrated management of open ocean and coastal marine areas Chair: N. Pinardi (INVG), Co-Chair: Chair: P. Bahurel (Mercator) MOON has three internal Groups: Management Group (EuroGOOS( Director invited) Operational Advisory Group K. Nittis (HCMR) Chair Scientific Steering Committee J. Tintoré (CSIC) Chair

4 MEDARGO is a component of MOON, the Mediterranean Operational Oceanography Network. Autonomous profiling floats are deployed at sea to measure profiles of temperature and salinity throughout the Mediterranean Sea. Temperature and salinity profiles are assimilated into prognostic numerical models of the Mediterranean (nowcasting and forecasting).

5 MEDARGO is part of the international ARGO program

6 MEDARGO sampling cycle characteristics Provor Apex Sea-Bird CTD 5,10,,100,110,,700,750,,2000 dbar

7 Sea-Bird conductivity-temperature temperature- depth (CTD) sensors

8 MEDARGO float deployments from Research Vessels

9 MEDARGO float deployments from Ships of Opportunity

10 MEDARGO float deployments from Ships of Opportunity

11 MedArgo Activities Mediterranean & Black Sea Argo Center Component of the North Atlantic Argo Regional Center Coordination of float deployments in Med and BS Production and distribution of Med/BS Argo products and services Delayed Mode Operator Delayed-mode processing specific to Med/BS Argo data Part of MOON (Mediterranean Operational Oceanography Network)

12 MedArgo Web Site

13 MedArgo Maps

14 MedArgo Maps

15 MedArgo Maps

16 MedArgo Maps

17 MedArgo Status January 2009 Oldest MedArgo Float Last Fix Deploy APEX-SBE WMO ARGOS Deploy15-Aug :08 Last Fix 1-Jan :21 Filetime 4 years 4 months Number of cycles 306

18 MedArgo Network: Histograms Mediterranean Deployments per year 2000 : 3 (NAVO) = : 4 (NAVO) = : 9 (NAVO) = : 4 (MFSTEP) + 9 (NAVO) = : 15 (MFSTEP) + 3 (NAVO) = : 3 (France) + 1 (Spain) + 7 (MFSTEP) + 1 (NAVO) + 2 (US/GR) = : 7 (France) + 1 (MFSTEP) + 2 (US/GR) = : 4 (France) = : 8 (France) = 8 (+ 3 PROVBIO-Iridium) TOTAL: 86 FLOATS more than 8000 CTD profiles 2009 : 3 (Italy) + 8 (Spain) + 5 (France) + 2 = 18? 21 foats alive in Jan 2009

19 MedArgo Network: DMQC Example of float in the Tyrrhenian Sea (preliminary results)

20 MedArgo & EuroArgo : Future Plans Contributions to Argo in Med from individual countries for operational or scientific purposes (encouraged by EuroArgo PP) (in 2009, 3 from Italy, 8 from Spain, 2 from EuroArgo PP, 5 from France, etc. ) Improved organization, NRT data processing, NRT data dissemination & archival in databases via MedArgo and CORIOLIS Limited EU support (GMES) via EuroArgo to buy floats in order to maintain minimum fleet in Med (30 floats?, float deployments per year?) Limited support in EuroArgo PP to test Iridium telemetry with 2 floats in the Med Sea

21 SMOS/MFSTEP/MOON MEDARGO SMOS AO proposal: Comparison of SMOS salinity with MFSTEP/MOON data and simulations in the Mediterranean P.I. s: : P.-M. Poulain (OGS, Italy), J. Font (ICM, Spain) & S. Dobricic (INGV,Italy). Cross-validation and validation of SMOS salinity products in the Mediterranean. Large Mediterranean salinity (and its wide range) are adequate for validating SMOS L2 products (spatial resolution km, salinity resolution 1 PSU) and L3 (gridded maps, 100 km, 0.1 PSU) products..

22 SMOS/MFSTEP/MOON Objective The main objective of this proposal is to validate and calibrate the SMOS salinity products using ground-based measurements in the Mediterranean Sea. The oceanographic and geographical characteristics of the Mediterranean Sea might not be optimum for this exercise, but its large range of surface salinity, surface temperature and atmospheric wind forcing (sea state) provides a unique setting in which to test the accuracy of SMOS under a wide spectrum of geophysical conditions. In addition, as part of the MFSTEP project and various national projects, and follow-on initiatives, operational datasets and simulation products are readily available in most areas of the Mediterranean Sea to guarantee a meaningful robust statistical calibration of the satellite SMOS products.

23 SMOS/MFSTEP/MOON Example of MOON salinity forecast map

24 SMOS/MFSTEP/MOON Methodology The float salinities (5 m) and numerical simulations (nowcasts,, 1 m) will be combined to obtain the best estimates of surface salinity in the footprints of SMOS. Level 2 SMOS salinities will be compared to these estimates through regression analyses. Level 3 monthly salinity maps (100 km resolution) will be compared to averaged MOON nowcast maps.

25 SMOS/MFSTEP/MOON Work Plan Prior SMOS launch: Analysis of co-variability of SST, SSS and ECMWF wind stress using model nowcasts (OGS). Statistical comparison between level 2 SMOS and MEDARGO float data. Regressions using all the data, and the data sorted in selected SST-wind stress regimes (ICM). Statistical comparison between level 3 SMOS with MOON weekly nowcasts.. Regressions using all the products, and the simulation data sorted in selected SST-wind stress regimes (INGV).

26 SMOS/MEDARGO/MOON Thank you! Any questions?