PowerPoint Presentation
The Mediterranean Forecasting System: recent developmentsMarina
Tonani (1), P. Oddo (1), G. Korres (4), E. Clementi (1), M. Drudi
(1), M. Dedominics (1)J. Pistoia (2), A. Guarnieri (1), V.
Romaniello (1), G. Girardi (1), A. Grandi (1), A. Bonaduce (2), S.
Salon (5), A. Teruzzi( 5), G. Cossarin (5), G. Bolzon (5), C.
Solidoro (5), A. Crise (5)and N. Pinardi (3)
Istituto Nazionale di Geofisica e Vulcanologia, Gruppo di
Oceanografia Operativa, Bologna, ItalyCentro EuroMediterraneo per i
Cambiamenti Climatici, Bologna, ItalyUniversity of Bologna,
Department of Environmental Sciences, Ravenna, ItalyHellenic Centre
for Marine Research, Athens, GreeceIstituto Nazionale di
Oceanografia e di Geofisica sperimentale, Trieste, ItalyTopicsThe
Mediterranean Forecasting System general description: components
and productsSystem:High resolution atmospheric forcingAtmospheric
pressureIncreased horizontal resolution biogeochemical component
Products:New reanalysis Next evolution
The Mediterranean Forecasting System (MFS) components
New! December 2013High resolution atmospheric forcingCOSMO-ME
(from USAM)The Mediterranean Forecasting System (MFS) : 1. High
resolution atmospheric forcing
1. MFS - High resolution atmospheric forcing
MFS-MyOMFS-RitmareNWPECMWFCOSMO-MEModelsNEMO+WW-IIINEMO+WW-IIIData
Asssimilation3dVAR3dVAR# Forecast days103Horizontal
res.1/16x1/161/16x1/16Vertical res.72 z (partial steps)72 z
(partial steps)LOBCClim from GLOClim from GLO
http: //medforecast.bo.ingv.it
Operational 3d ForecastHighResolution (7km) NWP Forcing
(COSMO-ME)Operational 10d ForecastLow Resolution NWP Forcing
MyOcean1. MFS - High resolution atmospheric forcing 6
Evaluation and inter-comparison of MFS systemsMarine Rapid
Environmental Assessment MREA 20142-12 October 20148Med-currents
R&D:2. NEMO model : Introduction of the Atm pressure
BarotropicBaroclinicccThe atmospheric pressure is usually
neglected, however it can play an important role in specific
regions of the world characterized by geometrical constrains like
the Med Sea. The free-surface elevation response to atmospheric
pressure can be composed of External Gravity Waves (EGWs).
EGWs require a very small time step time scale short compared to
other processes
Two methods are implemented in NEMO to allow a longer time step
solving the primitive equation in presence of EGWs: the so called
filtered and the time-splitting method.
The system with atm. pressure and time splitting (V4) is better
than the previous version (V3)2. MFS-V4 (with atm. Pressure)
evaluation: Sea Level in VeniceModel: atm. pressure & time
splitting parameterization V3 V4Data Assim.: SLA along track
without DAC correction (J2, Cr2, S/A)
Med-MFC Med currents V4 evaluation: Mediterranean basin
J2 (J1)J2+Cr2+S/Al
REGIONWinter (Nov-April)Log10 surf. Chl (mg/m3)Summer
(May-Oct)Log10 surf. Chl (mg/m3)MeanRMSMeanRMSNorthern West
Med-0.0110.201-0.1720.129Southern West
Med-0.0250.162-0.1290.107Tyrrhenian
Sea0.0290.138-0.0830.093Southern Adriatic
Sea-0.0410.140-0.1090.089Ionian Sea0.0390.148-0.0280.115Aegean
Sea-0.0730.182-0.0780.139Levantine Sea0.0500.149-0.0040.109
SAT1/81/16EANs of surface chlorophyllIncreased horizontal
resolution relevant in the reproduction of small scale horizontal
structures in specific areas (e.g. coastal area lateral transport
processes)3. MFS-BGC (increased res. 1/16): Chl validation
Improvement in reproducing sub-regional annual means of
vertically integrated net primary production in western
Mediterranean areas, other areas remain unaffected. Not enough
observation to evaluate the high spatial frequency.Basin-scale net
primary production is affected by increased resolution in
mesoscale-active areas such as Alboran Sea
MEDALBColella (2006)R8 R16 Mediterranean
(MED)90481075810359Alboran Sea (ALB)179116242120178101South West
Med (SWW)113431498113581North West Med
(NWM)115671237212274Levantine (LEV)722197649765__ 1/8__ 1/163.
MFS-BGC (increased res. 1/16): Net Primary Production
SYSTEMPRODUCTSTIME RANGEUPDATE FREQ.Med-CurSIMULATION1-6
daysDaily (J-1J) ANALYSIS1999-ongoingweekly (J-15/J-2) FORECAST10
daysDaily (J/J+9)REANALYSIS1987-2012----Med-BioSIMULATION1-6
daysweekly (J-7J/J-1) ANALYSIS2013-ongoingweekly (J-7/J-1)
FORECAST10 daysBi-weekly
(J/J+9)REANALYSIS1999-2010----MFS-products
The DA significantly improves the description of the variability
of surface chlorophyll4. MFS-BGC reanalysis (199-2010) with Chl
assimilationNo DADA
Next steps: MED-PHYS:Improvement of model diffusion and
advection parameterization (horiz. diff. and visc., tracer
advection scheme and momentum equation)LOBC: connection with GLOBAL
Mercator 1/12Assimilation of glider T/S profilesGODAE CLASS-4High
resolution (hourly) products
MED- BIO:DA of surface Chl in coastal areas and DA of other
variablesnon climatological light extinction coefficient
MODEL DOMAIN