The PEACETIME cruise (http://peacetime-project.org/) departs on May 10, 2017 from La Seyne (France) for a 33 days cruise. Onboard the French oceanographic research vessel Pourquoi Pas ?, there will be a team of 40 scientists who will study the impact of the Saharan atmospheric deposition on the Mediterranean Sea. This international and multidisciplinary scientific team will travel the central and western Mediterranean in search of atmospheric deposition of Saharan dust. This campaign will allow to better understand how atmospheric deposition affects the functioning of the pelagic ecosystem in the Mediterranean