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Application of a data-interpolating variational analysis (DIVA) tool to physical and biogeochemical measurements covering the Black Sea
Joassin, Pascal; Beckers, Jean-Marie; Boicenco, L. et al.
2008In Climate change in the Black Sea, hypthesis, observations, trends scenarios and mitigation strategy for the ecosystem
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Keywords :
SESAME; spatial interpolation; DIVA; data interpolation
Abstract :
[en] The European project SESAME (Southern European Seas: Assessing and Modelling Ecosystem changes) is dedicated to the assessment of ecological changes in the Mediterranean and Black seas during these last decades. This assessment will be done by combining statistical analysis of available data and the development of a 3D hydrodynamical-biogeochemical model. Data available since 1960 for the Black Sea from the databases MEDAR and NATO have been completed with data provided by SESAME partners. These data sets have been analyzed using DIVA, a geostatistical analysis tool developed by the GHER laboratory of the University of Liège. The DIVA analysis relies on a finite element resolution, taking into account coastlines, sub-basins, and advection by ocean currents. DIVA analysis generates spatially interpolated fields for biogeochemical and physical variables. Outputs consist in sets of analysis as well as error fields, and colorimetric scaled maps related to several depth layers. Biogeochemical variables considered consist in measures of chlorophyll, inorganic nutrients concentration, and phytoplankton abundances; physical variables consist in temperature and salinity. These treatments of the Black sea data sets offer an overview of the global pattern of the Black sea biogeochemical structure, and its evolution through the time periods concerned by the project. The interpolated fields generated by the DIVA tool will be used to validate the outputs of the 3D hydrodynamical-biogeochemical model developed for the north-western shelf of the Black sea in the framework of SESAME.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Joassin, Pascal
Beckers, Jean-Marie  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Boicenco, L.
Capet, Arthur  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanologie
Grégoire, Marilaure  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanologie
Moncheva, S.
Naithani, J.
Ouberdous, Mohamed ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Troupin, Charles  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Language :
English
Title :
Application of a data-interpolating variational analysis (DIVA) tool to physical and biogeochemical measurements covering the Black Sea
Publication date :
2008
Event name :
2nd Biannual and Black Sea scene EC project joint conference on "Climate change in the Black Sea"
Event place :
Sofia, Bulgaria
Event date :
du 6 au 9 octobre 2008
Audience :
International
Main work title :
Climate change in the Black Sea, hypthesis, observations, trends scenarios and mitigation strategy for the ecosystem
Peer reviewed :
Peer reviewed
Available on ORBi :
since 13 June 2013

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