The phrase "chlorophyll concentrations" refers to the amount or level of chlorophyll present in a specific area, usually in water or plants. Full definition
But there's more for «Mission to Earth» geeks (I count myself as one) over at the Earth Observatory Web site, where SeaWiFS merits the «Image of the Day» — a view of Earth showing the averaged chlorophyll concentration in the oceans from 1998 through 2010 (and of course showing all that glorious green terrestrial plant life, too): Read more... (dotearth.blogs.nytimes.com)
Three - day composite SeaWiFS image showing chlorophyll concentration for 18 - 21 June 2001. (cinar.org)
But there's more for «Mission to Earth» geeks (I count myself as one) over at the Earth Observatory Web site, where SeaWiFS merits the «Image of the Day» — a view of Earth showing the averaged chlorophyll concentration in the oceans from 1998 through 2010 (and of course showing all that glorious green terrestrial plant life, too): (dotearth.blogs.nytimes.com)