Granule Metadata Management. firstname.lastname@example.org email@example.com. NCDC (MI3), NWS (MIRS), and others in all NOAA Lines. CLASS: File System Rich Inventory. NESDIS Metadata. CoRIS, NMMR, MERMAid, NMFS. NVDS, CLASS, CoRIS, NMMR, MERMAid NOS: Data Explorer NOAA Library
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Granules are the smallest items that can be retrieved from an archive without invoking a subsetting operation. They are usually files. The metadata that describes characteristics of these files is termed Granule Metadata. In NPOESS Land this is called Dynamic Metadata. These metadata tend to be closely related to the data in the granules and many times are not consistent with national or international standards (which is fine).
File headers include constants (format information), systematics (dates) and variables.
Parameters include constants (land masks, spatial covariances) and variables (science parameters). In the aerosol case 30% of the grids presently archived with each granule are constants.
All of these metadata types can be described as a series of time segments with constant values. The shortest time segment may be one file interval long.
Systematic Header Parameters (dates)
(aerosol thickness mean and standard deviation)
Slow Variation (Quasi-static)
Fast Variation (Dynamic)
Time (File Number)
Add to last
Simple Observing System Characteristics (num, min/max lon) recorded after each update then monitored
Regular Automatic Updates
The Parameter Series table holds information about granule metadata values that are constant across multiple granules. This decreases the size of the database significantly (~90%) in some cases and improves performance.
Tools now exist to populate the table retroactively or on ingest.
SST Rich Inventory
GVI Rich Inventory
Aerosol Rich Inventory
L1B Rich Inventory