'Amount' means mass per unit area. The construction thickness_of_[X_]rainfall_amount means the accumulated 'depth' of rainfall i.e. the thickness of a layer of liquid water having the same mass per unit area as the rainfall amount.
This concept was harvested from the controlled vocabulary at http://vocab.nerc.ac.uk/collection/P07/current/ on 2022-06-10. Information was pulled as-is for the following properties: dcterms:created, skos:definition, skos:exactMatch, skos:related and skos:notation. The URI of the concept is generated using SHA256 on the CF standard name (in the skos:notation) and concatenated with the TERN controlled vocabularies' base URI (http://linked.data.gov.au/def/tern-cv/).
TERN is supported by the Australian Government through the National Collaborative Research Infrastructure Strategy, NCRIS.