General item feedback

[MartinePaepen]

After checking :
https://browser.stac.dataspace.copernicus.eu/collections/clms_ssm_europe_1km_daily_v1_cog
https://browser.stac.dataspace.copernicus.eu/collections/clms_ssm_europe_1km_daily_v1_nc
https://browser.stac.dataspace.copernicus.eu/collections/clms_ndvi_global_300m_10daily_v3_nc
https://browser.stac.dataspace.copernicus.eu/collections/clms_ndvi_global_300m_10daily_v3_cog

• platform/constellation is missing
• providers is missing
• product:timeliness --> where does this value come from?
• cube:dimensions.time.extent ==> should be ISO 8601 format

[jchojnackicf]

• platform/constellation is missing

If products use data from multiple satellites, i.e. PROBA-V and Sentinel-3/OLCI in case of NDVI collections, then platform/constellation is omitted. This is because of STAC spec, as it does not allow array of values for those fields.

• providers is missing

This has been fixed.

• product:timeliness --> where does this value come from?

The value comes from product page, i.e. here for NDVI

• cube:dimensions.time.extent ==> should be ISO 8601 format

Extent here describes how many values are there (which is the same way we have it in Sentinel-5p). Actual values (in ISO 8601 format) are in cube:dimensions.time.values.