AtmoBox, a real time device to measure atmospheric pollutants on board of Perseverance: transoceanic and polar cruises

The Perseverance is a sailboat belonging to the "Polar Ocean" association, headed by Jean-Louis and Elsa Etienne. This vessel carries several scientific instruments, including five atmospheric measurement systems monitoring gaseous mercury, ozone, nitrogen oxides, radon, and a laser particle counter. Over the past six months, the ship departed Nice, France, in the Mediterranean Sea, crossed the Strait of Gibraltar and the North Atlantic to reach Nuuk, Greenland. The second leg took the ship from Nuuk to San Francisco, via the Northwest Passage and the Bering Strait. The third leg took the ship along the Mexican coast, to Clipperton Atoll, Papeete, Tahiti, and Christchurch, New Zealand. Atmospheric quality was continuously monitored during this period, and we will present the combined variations of these five parameters in space and time variabilities. As expected, pollution is highest in ports and decreases during the passage from the Atlantic to the Pacific, with a further decrease upon entering the Southern Hemisphere.
The Atmobox onboard system also has the unique feature of transmitting its data in real time for long term experiments, thus allowing its operation to be monitored by a team of scientists on Earth when there are no qualified personnel on board. 

Aknowledgements: Jean Louis and Elsa Etienne head of the association "Océan Polaire" leadind the Persévérance.