[08-Jun-2019] Salinity and soil moisture data from the NASA SMAP satellite from 04-Apr-15 to 08-Jun-19. In the ocean, orange colors indicate high salinity (over 36) and blues indicate low salinity (less than 33). Salinities are expressed as Practical Salinity Units (PSU), which is approximately equal to parts per thousand. Over land, yellows and blues indicate dry and wet soil conditions, respectively. (00:01:16) Credit: NASA.Watch Movie »