User:Alex

From GHER

This is the home page of Alexander Barth

You can contact me by:

• email: a.barth at ulg.ac.be
• phone: +32 4 3663664

Curriculum Vitae

My CV (including a complete list of publications) can be downloaded as HTML or PDF file.

PhD thesis: Assimilation of sea surface temperature and sea surface height in a two-way nested primitive equation model of the Ligurian Sea at University of Liege. PDF

Search all my publications on ORBI:

• peer-reviewed publications
• not peer-reviewed publications

Publications on ORBI can be either downloaded directly or they will be sent to you per email (after accepting the usage license).

Selected Publications

• A. Barth, A. Alvera-Azcárate, J.-M. Beckers, J. Staneva, E. V. Stanev, and J. Schulz-Stellenfleth. Correcting surface winds by assimilating High-Frequency Radar surface currents in the German Bight. Ocean Dynamics, 2010. doi: 10.1007/s10236-010-0369-0. Accepted. PDF

• A. Barth, A. Alvera-Azcárate, C. Troupin, M. Ouberdous, and J.-M. Beckers. A web interface for griding arbitrarily distributed in situ data based on Data-Interpolating Variational Analysis (Diva). Advances in Geosciences, 28:29–37, 2010. doi: 10.5194/adgeo-28-29-2010. URL http://www.adv-geosci.net/28/29/2010/.

• A. Barth, A. Alvera-Azcárate, K.-W. Gurgel, J. Staneva, A. Port, J.-M. Beckers, and E. V. Stanev. Ensemble perturbation smoother for optimizing tidal boundary conditions by assimilation of High-Frequency radar surface currents - application to the German Bight. Ocean Science, 6(1):161–178, 2010. doi: 10.5194/os-6-161-2010 HTML PDF

• A. Barth, A. Alvera-Azcárate, J.-M. Beckers, R. H. Weisberg, L. Vandenbulcke, F. Lenartz, and M. Rixen. Dynamically constrained ensemble perturbations - application to tides on the West Florida Shelf. Ocean Science, 5(3):259–270, 2009. doi: 10.5194/os-5-259-2009 PDF HTML.

• A. Barth, A. Alvera-Azcárate, and R. H. Weisberg. Assimilation of high-frequency radar currents in a nested model of the West Florida Shelf. Journal of Geophysical Research, 113:C08033, 2008. doi: 10.1029/2007JC004585 ORBI PDF

• A. Barth, A. Alvera-Azcárate, and R. H. Weisberg. A nested model study of the Loop Current generated variability and its impact on the West Florida Shelf. Journal of Geophysical Research, 113:C05009, 2008. doi: 10.1029/2007JC004492. URL http://hdl.handle.net/2268/26199.

• A. Barth, A. Alvera-Azcárate, and R. H. Weisberg. Benefit of nesting a regional model into a large-scale ocean model instead of climatology. Application to the West Florida Shelf. Continental Shelf Research, 28:561–573, 2008. doi: 10.1016/j.csr.2007.11.004. URL http://hdl.handle.net/2268/25575.

• A. Barth, J.-M. Beckers, A. Alvera-Azcárate, and R. H. Weisberg. Filtering inertia-gravity waves from the initial conditions of the linear shallow water equations. Ocean Modelling, 19:204–218, 2007. doi: 10.1016/j.ocemod.2007.06.007. URL http://hdl.handle.net/2268/4266.

• A. Barth, A. Alvera-Azcárate, J.-M. Beckers, M. Rixen, and L. Vandenbulcke. Multigrid state vector for data assimilation in a two-way nested model of the Ligurian Sea. Journal of Marine Systems, 65(1-4):41–59, 2007. doi: 10.1016/j.jmarsys.2005.07.006. URL http://hdl.handle.net/2268/4260.

• A. Barth, A. Alvera-Azcárate, J.-M. Beckers, and M. Rixen. Coupling a two-way nested primitive equation model and a statistical SST predictor of the Ligurian Sea via data assimilation. Ocean Modelling, 13(3–4):255–270, 2006. doi: 10.1016/j.ocemod.2006.02.003. URL http://hdl.handle.net/2268/4306.

• A. Barth, A. Alvera-Azcárate, M Rixen, and J.-M. Beckers. Two-way nested model of mesoscale circulation features in the Ligurian Sea. Progress In Oceanography, 66:171–189, 2005. doi: 10.1016/j.pocean.2004.07.017. URL http://hdl.handle.net/2268/4301.

Full list of publications

Lecture

• Structure and application of numerical ocean models (OCEA0036-1)
• Seminar on data assimilation (with exercises)
  • Slides of Summer School in Toulon
  • Example scripts and solution to exercise
• Introduction to Optimal Interpolation and Variational Analysis

Software

Most the packages I wrote are general-purpose and might be useful to you as well:

• Ocean Assimilation Kit
• Octcdf, a NetCDF toolbox for Octave
• loadgrib, a GRIB decoder for Octave
• optiminterp, Optimal interpolation Fortran module with Octave interface
• Filtering inertia-gravity waves from the initial conditions of the linear shallow water equations
• Weakly Constrained Ensembles Method to create dynamically constrained ensemble perturbation for ensemble forecasts and data assimilation.
• Data assimilation package: Ensemble Perturbation Smoother

Web applications:

Diva on web: The Diva web-interface (available at http://gher-diva.phys.ulg.ac.be/web-vis/diva.html) is a web service to interpolate ocean data on a regular grid. It uses Data-Interpolating Variational Analysis (Diva) for the interpolation.

OceanBrowser: a tool for web-based visualization of gridded data sets. This is used in different projects: SeaDataNet, Emodnet (chemical lot), GHER

EarthGL is a javascript library to display images from a WMS server on a digital model of the Earth. It is based on WebGL and the HTML5 canvas element. It was implemented to visulalize horizontal and vertical sections of ocean variables. The library API is similar to OpenLayers.

OceanBrowser3D: a tool for web-based visualization of gridded data sets on a 3D digital model of the Earth

Current projects

• Understanding and predicting Antarctic sea ice variability at the decadal timescale (PREDANTAR, Belspo project SD/CA/04A)
• Web interface for DIVA and Interactive viewer of climatologies (SeaDataNet, EMODNET)

Past projects

• Developpement of a West Florida Shelf Forecast system
• Assimilation of HF radar measurements (ECOOP)