SWEET ontologies are written in the OWL ontology language. OWL is an XML language being adopted as a standard by the W3C. SWEET ontologies can be viewed using Internet Explorer 5 (or later) or Netscape 7. More specialized OWL-specific tools are available such as SWOOP or Protege.

SWEET 1.1 ontologies available here.

SWEET 2.0 Beta expanded ontologies available here.

See our Planetary Ontologies site for sharing ontologies.

SWEET 1.0:

Ontologies revised and validated Jan 26, 2006

Earth Realm

Physical Phenomena

Physical Process

Physical Property

Physical Substance

Sun Realm

Biosphere

Data

Data Center

Human Activity

Material Thing

Numerics

Sensor

Space

Time

Units

Terms in other taxonomies can be mapped to the SWEET ontologies using the following conversions.

Global Change Master Directory (GCMD)

CF Standard Names