1 1 norwecom in roms morten d. skogen morten@imr.no

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NORWECOM in ROMSMorten D. Skogen

morten@imr.no

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Outline of talk

• The NORWECOM model system

• Norwegian/Barents Sea examples

• Future works…

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NORWECOMThe NORWegian ECOlogical Model system

http://www.imr.no/~morten/norwecom

A coupled physical-chemical-biological model system appliedto study primary production and dispersion of particles

(e.g. fish larvae and/or pollution)

Main partners:

Institute of Marine ResearchDept. of Fisheries and Marine Biology, Univ. of Bergen

Dept. of Mathematics, Univ of BergenThe Norwegian Meteorological institute

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NORWECOM (2)

• first coupled physical-chemical-biological model for the whole North Sea

• physics based on POM (until now….?)• runs operational (7 days forecast) at met.no http://moncoze.met.no

• environmental status, eutrophication issues, what-if scenarios, climate/fish relations,…..

• North Sea, Skagerrak/Kattegat, Norwegian fjords, Benguela, Mozambique Channel

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NORWECOM (3)

• Primary production

• Respiration

• Algae death

• Regeneration

• Self shading

• Turbidity

• Sedimentation

• Resuspension

• Denitrification

• Diatoms, flagellates (chatonella)

• Detritus and diatom skeletals

• Inorganic nitrogen, phosphorus, silicate

• Oxygen

• Light model

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The biological model

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NORWECOM (4)

• Physics from ROMS v2.0 including ice (W.P.Budgell, IMR)

• 50km resolution in Nordic and Barents Seas

• Forced by NCEP daily mean fluxes

• Biology in offline mode

• Examples from 1999

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Outline of talk

• The NORWECOM model system

• Norwegian/Barents Sea examples

• Future works…

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The model domain (165x203x30)

Norwegian Sea

Barents Sea

North Sea

Bergen/Norway

Venice

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Mean annual 50m circulation

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Mean annual 50m salinity

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Mean annual 50m temperature

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Annual primary production (gC/m2)

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Day to day variability

Norwegian Sea Barents Sea

DIA

FLA

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Timing of peak production

DIATOMS FLAGELLATES TOTAL

June 15

May 15

April 15

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(Near) future works

• 20 km horizontal resolution

• Hindcast simulations 1980-2003

• Model validation

• Deliver results to IBM Calanus model and to herring migration model