The GCMD Keywords should be cited as:
Global Change Master Directory (GCMD). 2019. GCMD Keywords, Version 89.60. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://wiki.earthdata.nasa.gov/display/gcmdkey | 