April 2013

Map Description: Sea surface salinity in the Northern Hemisphere for April 2013. This monthly composite map was produced by Norman Kuring (NASA Goddard Space Flight Center) and is based on the latest algorithms developed by the Aquarius Calibration/Validation working group. Red colors indicate higher salinity (40 grams per kilogram); purple indicates relatively low salinity (30 grams per kilogram). Credit: Norman Kuring, NASA Goddard Space Flight Center.