https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.7 2026-04-15T10:53:30.610Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/dfe4b154-84e0-4005-81ce-90daf38c06e3 SNOW/ICE CHEMISTRY Date=2021-08-31 User Id=tstevens Entity=Definition Operation=UPDATE Field=reference System Note=update Definition New Value=Goudie, Andrew. 1997. The Encyclopedic Dictionary of Physical Geography. Blackwell Publishing, Malden, Massachusetts. Date=2021-08-31 User Id=tstevens Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=Refers to the chemical composition of snow and ice as determined from snow cores, ice cores, and snow pits. New Value=Refers to the chemical composition of snow and ice as determined from snow cores, ice cores, and snow pits. Refers to the chemical composition of snow and ice as determined from snow cores, ice cores, and snow pits. 2021-08-31 09:02:18.0