Here you will find a compilation of trajectories of drifters and drifting objects passing nearby the coasts of the Iberian Peninsula and inside the Mediterranean basin. Drifters selection has been based on the criteria of being deployed, picked-up or with a trajectory intersecting the region shown in the figure.
A total of about 1700 trajectories has been compiled from the following data sources:
Thus data come from several sources and collaboration with several institutions. In terms of formats and structure, data sets have been uniformized based on the COSMO 1.5 conventions (Gacía-Ladona et al., 2019) which basically implements a geojson format containing data and metada. Some primary quality control has been performed but still errors could be present.
Then data has been organized into a PostgreS/postGIS database engine for archiving purposes and to facilitate the visualization capabilities of these pages.
If you want to collaborate/contribute o report any error or comment, please don't hesitate to contact us:
As part of the WP3 tasks, an Atlas of surface and subsurface currents has been developed based on the state of the art products released by CMEMS services. This is a continuation of the work started in the Spanish COSMO project by extending the spatial domain to include the whole Mediterranean basin. You can browse and visualize the characteristics of climatological eulerian currents separately for the Atlantic side of the Iberian Peninsula (Canary-Iberian-Biscay region) and for the whole Mediterranean basin. Both products domains are shown separately because their characteristics are not equivalent. On one hand the currents of the Atlantic basin are total surface currents including the Ekman component. On the other hand, for the Mediterranean basin the products are absolute geostrophic currents derived from satellite altimetry so in particular no wind impact is included and the MEDSEA reanalysis from Copernicus.
Here below are the main aspects to consider for both products:
The spread of bivariate data is characterized by its covariance matrix. The data can be encircled in ellipses whose axis coincides with the direction of maximum variance of the data. In this Atlas, the variance ellipses corresponding to one, two, and three standard deviations (σ) are shown for each point. For normal distributions, these ellipses encircle respectively the 68.28% (σ), 95.45% (2σ) and 99.73% (3σ) of the data. Together with the variance ellipses the true heading (TH) and magnitude of the mean and the median are shown.
The COSMO-VIEW tool is an open source project developed for visualizing marine environmental data with special attention to manage ocean velocity fields from different sources (forecasting models, HF radar observations, drifters....). In addition it includes many tools to assess search and rescue operations (SAR). Among other functionalities we can highlight the possibility of combining and comparing several velocity products simultaneously, combining velocity fields with scalar data, as for example the sea surface temperature form models or satellite images, and loading lagrangian data from drifter observations. A remarkable funcionality is the connection with a Generalised Lagrangian model (Ballabrera-Poy et al. 2022) to perform Lagrangian simulations just from simple tracking trajectories, associated to static or time evolving velocity fiels, to more complex particle dynamics including the action of winds, waves and dispersion processes. The COSMO-VIEW is a basic stand alone GUI, entirely programed in Python and FORTRAN, with many high quality and highly configurable GIS capabilities and able to produce movies of time evolving fields. Latest developments include some skill assessment of simulated particle trajectories, backtracking capabilities and the option to load navigation warnings through the PING system (SHOM development in Pilot Study 3) and integrate AIS data.
In MEDOSMOSIS Pilot studies are activities developed by partners to solve identified gaps and interoperability issues associated to data sharing, data exchange in Maritime Surevillance. SAR applications is the main topic in which ICM team has been mainly involved among the project Pilot Studies. The goals have been to undertake two field activities devoted to test current operational tools from responsible authorities, to train SAR operators for managing the information flow in this kind of emergencies and to assess the integration into WEB services and characteristic tools for Maritime Surveillance. ICM has promoted two field activities, one coordinated by ICM and a second coordinated by the Hellenic Coast Guard. In the follwing we summarize both activities and highlights major outcomes.
