AQ Community Metadata Discussion

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• Sample ISO Metadata Records
• AQ Community Fields

Dataset

• generally: data from one provider, one (satellite) instrument or one model.
• Need to further clarify granularity for model data. For example: "MACC" or "MACC forecast" and "MACC reanalysis"

Parameter

• relatively clear (= "variable name", "field name" or "layer name")
• issue: same parameter can come in different units (e.g. surface ozone in ug/m3 or ppb) - "units" is a separate facet, so it is possible to make selection if two variants of the same data are on offer
• rerlation to CF standard_name: parameter name should be extract from standard_name describing the physical quantitiy without its representation

Platform

• predefined values: satellite, surface observation, vertical profile, model, emission (/!\ CHANGED) -- check common data model; climate community

Instrument

• new tag for method should be added
• instrument tag may not be available in some services and will get lost in aggregation
• present agreement on "coarse resolution catalogue" would not allow mapping of intrument and method as it will not go down to the level of individual stations
• use "instrument" also for "modelname" (rename facet to "instrument_modelname"?)

Domain

• remove this facet

Topic Category

• comes from ISO

Time Resolution

• rename to "Sample_Length"
• Tim Dye to sort this out...

new facet: Periodicity

• add "irregular" as value

new facet: cell_methods

• describes processing of data along any dimension. See cell_methods attributes in CF convention and follow same syntax. See [1]