Implementation of extraction routine for ECMWF data through the Calval web-pages. Final development report.

The extraction tool consists of mainly two parts. The first is a UNIX shell-script, hdf-mars, that extracts ECMWF analysed data, performs calculations and prints out an hdf-file according to the ESA CalVal metadata guidelines. The second part is the web interface that lets the user specify parameters, starts the shell script and displays its output.