PISCES-v2: an ocean biogeochemical model for carbon and ecosystem studies

Geoscientific model development, Journal Year: 2015, Volume and Issue: 8(8), P. 2465 - 2513

Published: Aug. 13, 2015

Abstract. PISCES-v2 (Pelagic Interactions Scheme for Carbon and Ecosystem Studies volume 2) is a biogeochemical model which simulates the lower trophic levels of marine ecosystems (phytoplankton, microzooplankton mesozooplankton) cycles carbon main nutrients (P, N, Fe, Si). The intended to be used both regional global configurations at high or low spatial resolutions as well short-term (seasonal, interannual) long-term (climate change, paleoceanography) analyses. There are 24 prognostic variables (tracers) including two phytoplankton compartments (diatoms nanophytoplankton), zooplankton size classes (microzooplankton description carbonate chemistry. Formulations in based on mixed Monod–quota formalism. On one hand, stoichiometry C / N P fixed growth rate limited by external availability Si. other iron silicon quotas variable internal Fe. Various parameterizations can activated PISCES-v2, setting, instance, complexity chemistry particulate organic materials. So far, has been coupled Nucleus European Modelling Ocean (NEMO) Regional Modeling System (ROMS) systems. A full its optional functionalities provided here. results quasi-steady-state simulation presented evaluated against diverse observational satellite-derived data. Finally, some new tested series sensitivity experiments.

Language: Английский

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Skill assessment for coupled biological/physical models of marine systems

Journal of Marine Systems, Journal Year: 2008, Volume and Issue: 76(1-2), P. 4 - 15

Published: June 4, 2008

Language: Английский

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Summary diagrams for coupled hydrodynamic-ecosystem model skill assessment

Journal of Marine Systems, Journal Year: 2008, Volume and Issue: 76(1-2), P. 64 - 82

Published: May 30, 2008

Language: Английский

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ERSEM 15.06: a generic model for marine biogeochemistry and the ecosystem dynamics of the lower trophic levels

Geoscientific model development, Journal Year: 2016, Volume and Issue: 9(4), P. 1293 - 1339

Published: April 5, 2016

Abstract. The European Regional Seas Ecosystem Model (ERSEM) is one of the most established ecosystem models for lower trophic levels marine food web in scientific literature. Since its original development early nineties it has evolved significantly from a coastal model North Sea to generic tool simulations shelf seas global ocean. current release contains all essential elements pelagic and benthic parts ecosystem, including microbial web, carbonate system, calcification. Its distribution accompanied by testing framework enabling analysis individual model. Here we provide detailed mathematical description ERSEM components along with case studies mesocosm-type simulations, water column implementations, brief example full-scale application north-western shelf. Validation against situ data demonstrates capability represent contrasting environments.

Language: Английский

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pH variability and CO2 induced acidification in the North Sea

Journal of Marine Systems, Journal Year: 2006, Volume and Issue: 64(1-4), P. 229 - 241

Published: July 8, 2006

Language: Английский

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Tidal modulation on the Changjiang River plume in summer

Journal of Geophysical Research Atmospheres, Journal Year: 2011, Volume and Issue: 116(C8)

Published: Aug. 5, 2011

[1] Tide effects on the structure of near-field Changjiang River plume and extension far-field have often been neglected in analysis numerical simulations, which is focus this study. Numerical experiments highlighted crucial role tidal forcing modulating plume. Without forcing, results an unrealistic upstream along Jiangsu coast. With vertical mixing increases, resulting a strong horizontal salinity gradient at northern side mouth coast, acts as dynamic barrier restricts northward migration Furthermore, produces bidirectional near field, separation located head submarine canyon. A significant bulge occurs around canyon rotates anticyclonically, carries large portion diluted water toward northeast merges into moves southeast, mainly caused by rectification. This more evident under certain wind conditions. During neap tide with reduced energy, extends farther offshore, becomes less evident. These behaviors are maintained fundamentally important region river even summer monsoon shelf currents, although far field currents eventually dominate extension.

Language: Английский

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Self-Organizing Maps applied to ecological sciences

Ecological Informatics, Journal Year: 2010, Volume and Issue: 6(1), P. 50 - 61

Published: Nov. 27, 2010

Language: Английский

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The response of salt intrusion to changes in river discharge and tidal mixing during the dry season in the Modaomen Estuary, China

Continental Shelf Research, Journal Year: 2011, Volume and Issue: 31(7-8), P. 769 - 788

Published: Feb. 5, 2011

Language: Английский

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Structure, variability, and salt flux in a strongly forced salt wedge estuary

Journal of Geophysical Research Atmospheres, Journal Year: 2010, Volume and Issue: 115(C6)

Published: June 1, 2010

The tidally varying circulation, stratification, and salt flux mechanisms are investigated in a shallow wedge estuary where fluvial tidal velocities large the steady baroclinic circulation is comparatively weak. study integrates field observations numerical simulations of Merrimack River estuary. At moderate to high discharge short highly stratified, while at lower discharges it shifts longer, more weakly stratified estuary; transition occurs when length salinity intrusion similar excursion. variable time scales owing advection mixing bottom front. Salt predominantly due processes rather than or bathymetric shear. Tidal pumping important near mouth, but inside asymmetries elevation thickness halocline that depend on amplitude river discharge. Conditions Merrimack, including vary with event seasonal spring‐neap changes amplitude. An unstructured grid hydrodynamic model used simulate conditions results compared quantitatively against observations. achieves skill series water level, salinity, velocity captures spatial structures velocity, observed along‐ across‐estuary transects. High skills accurate well‐resolved bathymetry low background vertical horizontal diffusivities.

Language: Английский

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Evaluating targets and trade‐offs among fisheries and conservation objectives using a multispecies size spectrum model

Journal of Applied Ecology, Journal Year: 2014, Volume and Issue: 51(3), P. 612 - 622

Published: March 25, 2014

Summary Marine environmental management policies seek to ensure that fishing impacts on fished populations and other components of the ecosystem are sustainable, simultaneously meet objectives for fisheries conservation. For example, in Europe, targets (i) biodiversity, (ii) food web structure as indicated by proportion large fish (iii) mortality rates exploited species lead maximum sustainable yield, F MSY, being proposed support implementation Strategy Framework Directive. Efforts reconcile any trade‐offs among need be informed knowledge consequences alternate actions. We develop, calibrate apply a multispecies size spectrum model North Sea community assess response fishing. The predicts species' distributions, abundance, productivity interactions therefore provides single framework evaluating between population status, structure, biodiversity yield. show can replicate realistic past responses whether meeting (fishing at MSY ) will sufficient indicators under two scenarios (status quo ). recovery is 60% greater when than if status (2010) maintained. probability achieving target was both spite major restructuring revealed structure. Synthesis applications . Our applied evaluate indicator conservation objectives. There significant reductions below would needed Europe managers make binding commitment target, with concomitant

Language: Английский

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