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Assimilation of the satellite SST data in the 3D CEMBS model

Nowicki A., Dzierzbicka-Głowacka L., Janecki M., Kałas M.

Oceanologia

2015

No. 57 (1)

17--24

The 3D CEMBS (3D Coupled Ecosystem Model of the Baltic Sea) is a coupled ecosystem model of the Baltic Sea. In operational mode it computes 48-h forecasts of the hydrodynamic and biochemical parameters describing the Baltic Sea state. The Cressman assimilation scheme was implemented as part of the system in order to improve overall model accuracy. The system uses satellite-measured sea surface temperature from the MODIS Aqua spectroradiometer for the assimilation process. The satellite measured SST is obtained from a predefined server, which is part of the Satellite Monitoring of the Baltic Sea Environment project (SatBałtyk). To validate the model results and the impact of assimilation on the model's accuracy, two separate test runs were performed using historical data covering the years 2011 and 2012. Independent computations were performed for the model with and without satellite SST assimilation, respectively referred to in this paper as 3D CEMBS_A and 3D CEMBS. The results of the computations were then compared with satellite and in situ measured data to validate the model and the assimilation scheme's implementation. The objective of this paper is to describe the implementation of the satellite SST data assimilation algorithm and to present the results of the preliminary validation of the models with observations.

On the use of a simple primary productivity model to assess the skill of a physical ocean model

Kantha L., Carniel S., Clayson C.A., Sclavo M.

Oceanological and Hydrobiological Studies

2011

Vol. 40, No.2

86-95

Ecosystem models, used mainly in studying the interactions between different trophic levels, can also be used for ocean circulation model skill assessment, with the help of satellite ocean color data. This paper presents how the use of a simple NPZ primary productivity ecosystem model, coupled to a hydrodynamical model, can help assessing the skill of the physical ocean model in depicting realistically the prevailing mesoscale features of the upper layers of the Gulf of Mexico. Results indicate that the physical model effectively reproduces the mesoscale features of circulation underlying the resulting chlorophyll concentrations, especially when circulation fronts exist.

Remote Oceanographic Instrumentation Integrated in a GRID Environment

Salon S., Poulain P.-M., Mauri E., Gerin R., Adami D., Davoli F.

Computational Methods in Science and Technology

2009

Vol. 15, nr 1

49-55

The observations provided by oceanographic remote instruments are essential to the purposes of the operational oceanography that represents a constantly growing tool to monitor and predict the state of the marine resources. The management of a network of instruments deployed in the Mediterranean Sea is a complex task that may be greatly supported by the GRID technology. This paper presents the activity planned by the DORII EU-FP7 project concerning the floats and the glider. The aim of the project is to demonstrate the potentiality of the state-of-the-art eInfrastructure in the integration of the data driven control/interaction workflow that characterizes the instruments. We describe the communication between the elements of the workflow and the associated network topology.