Eurocean

Default Run the model(s) as parametrized by the developer(s)

Custom Change the value of the state variables as required

Choose your models

Experiment with a single model or compare output from two biogeochemical models, either with their default parameter values or with new user-defined values. All simulations use NEMO-OPA hydrodynamic fields. For full model details, click on ‘Docs’.

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APECOSM Bioenergetic size-based model for apex predators.

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ERSEM-PELAGOS Quota biogeochemical model, a global version of ERSEM.

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NEMURO Monod biogeochemical model developed for the Pacific Ocean.

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PISCES Monod, 24 compartment biogeochemical model for marine productivity.

Choose a geographic location

Select a location for the 1D simulation by clicking on the map, or dialing it in. Your choice will be approximated to the grid of the map.

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Latitude

 °E

Longitude

 °N

Choose a run period

Select a start and end date for the simulation, or choose a preconfigured period duration. Run period is measure in absolute years.

Or choose preconfigured time interval

• One week
• One month
• Two months
• Six months
• One year
• Two years

Change state variables values

State Variables

Hydrodynamics

Others

• Phytoplankton
• Zooplankton
• Organica matter
• Food matrix

Change state variable values for phytoplankton, zooplankton and organic matter within accepted ranges. Food matrix can also be changed from default values only between 0 and 1.

Variables	Symbol	Values	Units
P-I slope nano	alpha		(W.m-2)-1 d-1
P-I slope diatoms	alpha		(W.m-2)-1 d-1
Mortality Rate nano	mP		Day-1
Mortality Rate diatoms	mP		Day-1
Sedimentation Rate nano	w P		d-1 molC-1
Sedimentation Rate dia	w Pmax		d-1 molC-1
K NO3 nano	K NO3		mMolN/L
K NO3 diatoms	K NO3		mMolN/L
K NH4 nano	K NH4		mMolN/L
K NH4 diatoms	K NH4		mMolN/L
K Si diatoms	K Si		mMolSi/L
K Fe min nano	K Fe		nMolFe/L
K Fe min diatom	K Fe		nMolFe/L

Change state variable values for phytoplankton, zooplankton and organic matter within accepted ranges. Food matrix can also be changed from default values only between 0 and 1.

Variables	Symbol	Values	Units
Growth efficiency, micro	epsilon
Growth efficiency, meso	epsilon
Grazing rate, max, micro	gZ		Day-1
Grazing rate, max, meso	gM		Day-1
K Grazing, micro	K G Z		mMolC l-1
K Grazing, meso	K G Z		mMolC l-1
Microzooplankton excretion	rZ		Day-1
Mesozooplankton excretion	rM		Day-1
Microzooplankton	mZ		(mMolC l-1)-1 d-1
Mesozooplankton mortality	mM		(mMolC l-1)-1 d-1

Change state variable values for phytoplankton, zooplankton and organic matter within accepted ranges. Food matrix can also be changed from default values only between 0 and 1.

Variables	Symbol	Values	Units
Remineralization rate of DOC	Lambda DOC		d-1
Half-saturation constant for DOC remineralization	K DOC		mMolC l-1
Degradation rate of POC	Lambda POC		d-1
Mininimum sinking speed of POC	w min		m d-1
Maximum sinking speed of POC	w max		m d-1
NH4 nitrification rate	Lambda NH4		Day-1
Iron scavenging rate	Lambda Fe		d-1 uMol-1 L

Change state variable values for phytoplankton, zooplankton and organic matter within accepted ranges. Food matrix can also be changed from default values only between 0 and 1.

		PREY
PREDATOR		Nano phytoplankton	Diatoms	POS	Microzooplankton
	Microzooplankton
	Mesozooplankton

The simulator uses hydrodynamic output from NEMO-OPA as a default. Other hydrodynamic models output are planned for further development (e.g. ROMS, POM).

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NEMO-OPA The NEMO/OPA ocean model [Madec et al.1998] with 0.25° horizontal is a ...

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BERN3D The Bern3D model (Müller. et al., Journal of Climate, 2006) is a computationally-efficient, 3-dimensional ...

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POM The Princeton Ocean Model (POM; Blumberg and Mellor, 1980 and 1987) ...

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ROMS The Regional Ocean Model is ...

If you would prefer more freedom on customizing your simulations, let us know. Contact ivo_grigorov@hotmail.com

Choose variables for output

Tick the boxes of the variables you would like to plot graphically after the simulation. As a default you can download all output variables after the simulations has completed.

Run simulation

By clicking here...

Parameters