www.mercator-ocean.fr wp4 task t4.2 wp4-t4.2 : establishment of validation criteria of...
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www.mercator-ocean.fr
WP4Task T4.2
WP4-T4.2 : Establishment of validation criteria of multidisciplinary information products
ECOOP Annual MeetingAthens, 12-15 February 2008
• Purposes of the validation
• Fields to validate
• Domains of validation
• Observation data for the validation
• Validation criteria
www.mercator-ocean.fr
WP4Task T4.2
Purposes of the [email protected]
ECOOP Annual MeetingAthens, 12-15 February 2008
The validation must allow :
• the system and all its sub-systems to improve => need of external data to control the consistency and the accuracy of the system
• the control of the forecasting system in operation (e.g., % of time the system is running well, databases correctly filled etc…).
• to provide some “error bars” with the delivered products
• to respond to special user requirements. It is possible to consider particular products for particular uses (e.g., surface currents + Sea State + Wind for Search and Rescue or oil spill). The errors levels should be given by users and integrated on our system to improve it.
www.mercator-ocean.fr
WP4Task T4.2
Fields to [email protected]
ECOOP Annual MeetingAthens, 12-15 February 2008
Input fields (forcings)
• Atm. fields (e.g. : heat & fresh water fluxes, wind stress …)
• IC & OBC : validation of parent system solution
Output fields
• Mandatory fields : SST, SSS, T(z) & S(z)
• Optional fields : SSH, SSV, V(z), biological fields, surface wave & ice (3 last fields for coastal applications)
Necessity to choice a same standard output format (COARDS : netcdf files, regular grid …) for the OpenDAP (EuroMISS WP8)
www.mercator-ocean.fr
WP4Task T4.2
Domains of [email protected]
ECOOP Annual MeetingAthens, 12-15 February 2008
5 integrated systems :
• Baltic Sea
• North West Shelf
• Iberia-Biscay-Ireland area
• Mediterranean Sea
• Black Sea
Baltic Metadata (CTD)
6oE 12oE 18oE 24oE 30oE
51oN
54oN
57oN
60oN
63oN
66oN
-6000
-5000
-4000
-3000
-2000
-1000
0
BlackSea Metadata 2004(ARGO)
27oE 30oE 33oE 36oE 39oE 42oE 40oN
42oN
44oN
46oN
48oN
-3500
-3000
-2500
-2000
-1500
-1000
-500
0
Med Metadata (XBT)
0o 9oE 18oE 27oE 36oE 30oN
33oN
36oN
39oN
42oN
45oN
-6000
-5000
-4000
-3000
-2000
-1000
0
IBIROOS Metadata 2006(argo)
30oW 24oW 18oW 12oW 6oW 0o
24oN
32oN
40oN
48oN
56oN
-6000
-5000
-4000
-3000
-2000
-1000
0
NorthSea Metadata 2003(m-buoy)
12oW 6oW 0o 6oE 12oE 48oN
51oN
54oN
57oN
60oN
-4500
-4000
-3500
-3000
-2500
-2000
-1500
-1000
-500
0
Observation data for the validation
Following the concept of MERSEA database but for each
region (WP2)
www.mercator-ocean.fr
WP4Task T4.2
Validation [email protected]
ECOOP Annual MeetingAthens, 12-15 February 2008
4 metric classes :
• Class I : Simple maps of chosen output variables on a common grid and vertical levels => model inter-comparison & comparison to remote sensing data (e.g. SST or EKE) (post-processing)
Altimetry I.PUJOL CLS
EKE july 2003 – july 2004
Model MERCATOR
www.mercator-ocean.fr
WP4Task [email protected]
ECOOP Annual MeetingAthens, 12-15 February 2008
• Class II :High resolution sections and profiles of the different models against ship sections or moorings …
For example :
- temperature profile, time series, on points where there are moorings (on line)
- salinity profile, time series, on points where there are moorings (on line)
- velocities along ship section (post processing)
• Class III : Daily mean volume transports through special sections (online)
www.mercator-ocean.fr
WP4Task T4.2
ECOOP Annual MeetingAthens, 12-15 February 2008
XBT linesMOORINGS
GLOSS TAO PIRATA
Model/Tide gauge SLA time series comparison
SOOP
MFS MODEL T XBT Observed T
MODEL/OBS comparison
WOCE CLIVAR CANADIAN SECTIONS
MODEL/WOCE-CLIVAR SECTION VOLUME TRANSPORT
across FLORIDA Strait :MODEL/CABLE Comparison
SECTIONS and TRANSPORT
Example of MERSEA project for class II & III
www.mercator-ocean.fr
WP4Task T4.2
RMS & correlation of :
- Analysis / observation data => consistency & accuracy of analysis (case of assimilated models)
- Forecasts / observation data => consistence & accuracy of the forecasts
- Climatology (e.g. monthly) / observation data => consistency & accuracy of the climatology
- Persistence / observation data => consistency & accuracy of the forecast when the model is supplied by the same forcings during the forecasting period
• Class IV : Test of the performance of analysis and forecasts
The comparison between these 4 indicators permits to assess the performance of the system
Performance assessment on sea-ice concentration (TOPAZ system). Compared to SSM/I products (L.
Bertino)
www.mercator-ocean.fr
WP4Task T4.2
ECOOP Annual MeetingAthens, 12-15 February 2008
Validation Class IV for input (solar flux)
& output (SST)
INPUT
3-hourly ECMWF Short Wave
Radiation / 3-hourly remote sensing data
(CMS METEOFRANCE)
OUTPUT
SST of the model MERCATOR forced by 3-h ECMWF fluxes /
Reynolds SST analysis