https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf
23.6
2026-03-19T10:41:57.720Z
https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/f5717312-c3ca-4492-a166-9f17c6d9b273
SULFUR DIOXIDE
Date=2021-02-26 User Id=tstevens Entity=NarrowerRelation Operation=INSERT
User Note=Insert Concept
System Note=add narrower relation
New Value=SULFUR DIOXIDE [f5717312-c3ca-4492-a166-9f17c6d9b273,86733] - SULFUR DIOXIDE SURFACE [022f3225-3b23-4e56-a6ea-c21f08f9e179,560882]
Date=2021-03-04 User Id=tstevens Entity=Definition Operation=UPDATE Field=text
System Note=update Definition
Old Value=Sulfur dioxide (SO2) is a non-inflammable colorless gas. SO2 is
usually oxidized by ozone and hydrogen peroxide to form sulfur trioxide, a
secondary pollutant that is extremely soluble in water. Droplets of
sulfuric acid (acid rain) are formed when sulfur oxides are present in
the atmosphere. The production of SO2 originating from coal-fired power
plants and other fossil fuel combustion is largely responsible for
the damage caused by acid rain. Volcanic eruptions also provide a source
of sulfur dioxide in the atmosphere but are insignificant when compared
to anthropogenic sources. [Science; v265; 497-9; 1994.] [Nature;
v366;327-9; 1993.]
New Value=Sulfur dioxide (SO2) is a non-inflammable colorless gas. SO2 is usually oxidized by ozone and hydrogen peroxide to form sulfur trioxide, a secondary pollutant that is extremely soluble in water. Droplets of
sulfuric acid (acid rain) are formed when sulfur oxides are present in the atmosphere. The production of SO2 originating from coal-fired power plants and other fossil fuel combustion is largely responsible for
the damage caused by acid rain. Volcanic eruptions also provide a sourceof sulfur dioxide in the atmosphere but are insignificant when compared to anthropogenic sources.
Date=2021-03-04 User Id=tstevens Entity=Definition Operation=UPDATE Field=reference
System Note=update Definition
Old Value=Atmospheric and Air Chemistry Glossary from the Sam Houston State University.
"http://www.shsu.edu/~chemistry/Glossary/glos.html"
New Value=Atmospheric and Air Chemistry Glossary from the Sam Houston State University.
Date=2021-02-26 User Id=tstevens Entity=NarrowerRelation Operation=INSERT
User Note=Insert Concept
System Note=add narrower relation
New Value=SULFUR DIOXIDE [f5717312-c3ca-4492-a166-9f17c6d9b273,86733] - SULFUR DIOXIDE PROFILES [25664d90-f32e-490f-97e4-720e3903d775,560881]
Sulfur dioxide (SO2) is a non-inflammable colorless gas. SO2 is usually oxidized by ozone and hydrogen peroxide to form sulfur trioxide, a secondary pollutant that is extremely soluble in water. Droplets ofsulfuric acid (acid rain) are formed when sulfur oxides are present in the atmosphere. The production of SO2 originating from coal-fired power plants and other fossil fuel combustion is largely responsible forthe damage caused by acid rain. Volcanic eruptions also provide a sourceof sulfur dioxide in the atmosphere but are insignificant when compared to anthropogenic sources.
2021-03-04 07:59:38.0