(via Piero Vietti’s Cambi di Stagione. My translation of course)
17 JUN 2009 From the ongoing OGS conference on Observational Oceanography in Trieste, Italy – Rome, 17 June (Apcom) – No water warming processes are likely to be undergoing in the Mediterranean. It’s one of the preliminary results obtained under MedArgo, the “sister project”, coordinated by OGS [the Italian National Institute on Oceanography and Experimental Geophysics].
MedArgo deals specifically with the Mediterranean Sea and surrounding countries and is part of EuroArgo, the European component of the international Argo project.
Argo’s objective is an intensive analysis of the seas to see what are the impacts of climate change and global warming on the waters of our planet and, consequently, also on its ecosystems. That is why 60 European scientists are comparing data and knowledge at the Second EuroArgo Conference on Observational Oceanography, being held in Trieste, and organized by OGS.
In order to study the chemical and physical parameters of the waters of the seas, OGS uses special tools called “float profilers” [?], battery-powered cylindrical tubes released into sea currents. Devices last between 3 and 4 years and collect 150-200 profiles before being abandones.
“These instruments – says Pierre-Marie Poulain, Head of the Remote Sensing Group at OGS and coordinator of MedArgo – go down to an average depth of 350 meters and remain there for five days. Then they do a quick foray to 2,000 meters and come back up, measuring the physical parameters of the water column and transmitting the data via satellite. Everything is done in real time: the data arrives at research centers, scattered throughout the world, where it is processed, managed and disseminated to the community of scientists.”
At present, there are around 3,000 profilers worldwide, spaced apart by about 300 kilometers. In the European seas there are 800 profiles, 23 of which in the Mediterranean Sea, with the objective of bringing the total to 30 for a complete coverage of the basin.
As well as coordinating the launching of the profilers, OGS is also involved in collecting the data recorded on the characteristics of currents, temperature and salinity. The researchers from Trieste are, in fact, among the few with the oceanographical skills needed to perform the necessary quality control.
MedArgo so far has collected a series of data that illustrate what is happening in the Mediterranean. “The Mediterranean current – adds Poulain – is an important engine of the local circulation, because it influences all motions of this enclosed sea. On the basis of information gathered so far, all we can anticipate is that at the moment there are no processes warming the waters. But we will have more details only at the end of the project, with the final data in hand.”