The National Spanish Research Council's SINOCOP experiment was designed to develop new methodologies to estimate the 3D state of the ocean using a multisensor observational approach combined with numerical modeling. The SINOCOP experiment was carried out along the northwest coast of Mallorca Island in the Western Mediterranean from May 11-21, 2009. A mission using two Teledyne Webb Research Slocum gliders was carried out simultaneously and in combination with other types of measurements. Positioning time series data from drifters were linearly interpolated every six hours and a low-pass filter with a 36-hour cutoff frequency was applied in order to remove inertial oscillations. Twenty-four CTD casts using the SBE 25 probe were performed from IMEDEA's coastal ship. A detailed analysis of the whole data set is in progress, including the modeling of these kinds of mesoscale structures. Particular attention will be devoted to the analysis of the biogeochemical data recorded by the glider platforms.