The R/V Gaylord Nelson belongs to the Wisconsin Department of Natural Resources. The cruise took place in June 2012. The cruise area included Lake Michigan and Green Bay. Eleven (11) measurement series spanning 4 days were acquired during the cruise.
Dr. Nima Pahlevan from the Department of Environmental, Earth, and Ocean Sciences, University of Massachusetts (Boston, MA) was in charge of the optical depth measurements and operated a sunphotometer onboard.