Modelling the spatial and temporal variability of the SW lagoon of New Caledonia II: Realistic 3D simulations compared with in situ data

Autor: Vincent Faure, Jean-Pascal Torréton, Christel Pinazo, Pascal Douillet
Přispěvatelé: OPLC, Laboratoire d'Océanographie Physique et Biogéochimique (LOPB), Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'océanographie et de biogéochimie (LOB), Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire d'Océanographie Physique et Biogéochimique (LOPB), Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), PNEC Nouvelle-Calédonie, Laboratoire d'Océanographie Physique et Biologique ( LOPB ), Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire d'océanographie et de biogéochimie ( LOB ), Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Laboratoire d'Océanographie Physique et Biologique ( LOPB ), Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS )
Jazyk: angličtina
Rok vydání: 2010
Předmět:
0106 biological sciences
[ SDU.OCEAN ] Sciences of the Universe [physics]/Ocean
Atmosphere
Geologic Sediments
Time Factors
010504 meteorology & atmospheric sciences
Irradiance
Oceanography
01 natural sciences
BACTERIOPLANKTON GROWTH
media_common
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
3-DIMENSIONAL MODEL
geography.geographical_feature_category
GREAT-BARRIER-REEF
Physics
Coral reef
Lagoon
Biogeochemistry
Pollution
Seasons
PHYTOPLANKTON BIOMASS
Water Microbiology
CORAL-REEF LAGOON
SUSPENDED-SEDIMENT TRANSPORT
Coupled models
Biogeochemical cycle
media_common.quotation_subject
WATER RESIDENCE TIME
Aquatic Science
Bacterial Physiological Phenomena
HYDRODYNAMIC TIME PARAMETERS
New Caledonia
Computer Simulation
Seawater
Ecosystem
SENSITIVITY ANALYSIS
14. Life underwater
0105 earth and related environmental sciences
geography
010604 marine biology & hydrobiology
Sediment
Models
Theoretical
15. Life on land
13. Climate action
Phytoplankton
Spatial variability
SOUTH-WEST LAGOON
Zdroj: Marine Pollution Bulletin
Marine Pollution Bulletin, Elsevier, 2010, 61, pp.480-502. ⟨10.1016/j.marpolbul.2010.06.040⟩
Marine Pollution Bulletin, 2010, 61, pp.480-502. ⟨10.1016/j.marpolbul.2010.06.040⟩
Marine Pollution Bulletin, Elsevier, 2010, 61, pp.480-502. 〈10.1016/j.marpolbul.2010.06.040〉
ISSN: 0025-326X
DOI: 10.1016/j.marpolbul.2010.06.040⟩
Popis: Coral reef lagoons are under the growing influence of anthropogenic activities, leading to increasing loads of nutrients and various contaminants. Modelling approaches are a useful tool for studying such a complex coastal environment. In this study, we carried out the development of a three-dimensional coupled hydrodynamical-biogeochemical model of the south-west lagoon of New Caledonia. The biogeochemical model presented in Faure et al. (2006, 2010) was dynamically coupled with a hydrodynamical model (MARS3D) in order to study the short-term variability of the ecosystem. Two simulations (in winter and summer) were then performed from measured initial conditions using realistic wind and irradiance conditions and river inputs. Examinations of the biogeochemical response to these transient meteorological conditions were presented and compared with temporal field data corresponding to the considered periods. Results highlighted the ecosystem functioning, based on the balance of hydrodynamical and biogeochemical processes. Influence of urban and terrigeneous inputs were limited to the coastal zone. The model accurately reproduced the measured Chl.a and bacterial production, highlighting the improvement made on the biogeochemical model. However, the underestimation of some variables in model outputs, in particular nutrients, led us to focus on different inputs, such as sediment inputs which were not taken into account or properly estimated. Moreover, the role of boundary waters appeared crucial and suggested a calibration effort. Last, the final aim of our modelling study will help the development of a useful tool for studying the key processes of the ecosystem of the south-west lagoon of New Caledonia, as well as the examination of the biogeochemical response under different scenarios. (C) 2010 Elsevier Ltd. All rights reserved.
Databáze: OpenAIRE
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