1. a Science Applications International Corporation , Beltsville, Maryland, USA
2. b SIMBIOS Project Code 970.2 , NASA Goddard Space Flight Center , Greenbelt, Maryland, USA
3. c NOAA/National Environmental Satellite Data and Information Service , Camp Springs, Maryland, USA
4. d Oceans and Ice Branch, Code 971 , NASA Goddard Space Flight Center , Greenbelt, Maryland, USA
5. e SeaWiFS Project, Code 970.2 , NASA Goddard Space Flight Center , Greenbelt, Maryland, USA
6. f Office for Global Carbon Studies, Code 970.2 , NASA Goddard Space Flight Center , Greenbelt, Maryland, USA