L3 Level Grid File Metadata

Highlighted attributes are manually required items. Green items from the Data Supplier, whilst Contributing Data Hubs will generate all Optional fields when they are not supplied, Conditional fields, or where the information can be extracted and derived.

Preferred Name

Format

Cardinality

Required

Source

Definition

Example

Region Code

Text

1

Conditional

Data Supplier / Contrib Hub

A code defining a well known grid (define here) used to break up the data file into reliable and useable sizes (ensuring products file sizes stay within reasonable limits)

TBD

Published_Resolution

Float (1 DEC)

1

Mandatory

Data Supplier / Contrib Hub

The published resolution as defined by Table 3 depth bands and associated grid resolutions

16

Uncertainty_Model

Text

1

Mandatory

Data Supplier / Contrib Hub

The type of model that calculates the accumulated uncertainties of a dataset (instrument errors, conversion errors, data errors etc.).

Cube

Feature Geometry Polygon

Geometry

1

Optional

Data Supplier / Contrib Hub

geometric line shape of the feature, described in GML,WKT or stored in an ORACLE or ESRI format

N/A

Feature Geometry CRS Polygon

Text +URI

1

Optional

Data Supplier / Contrib Hub

the Coordinate Reference Systems, using EPSG standard for the Polygon Feature

EPSG4326 using https://epsg.io/4326

TIF Filename

Text

1

Mandatory

Data Supplier / Derived

Name derived from L0 raw filename with extension format .tif

{GAID/SurveyID}{_ProductType}[{_SurveyYear}]{_Resolution}[{_SensorIdentifier}]{_RegionCode}{_MeasurementLabel}{_VersionIdentifier}.{FormatExtension}

GA4867_Bathymetry_2020_64m_SH51_Depth_20210729.tif

In2019_e01_Bathymetry_0p5m_EM710_SH51_Depth_20201214T052921Z.tif

TIF DataFile Size

Float (2 DEC)

1

Mandatory

Data Supplier / Derived

TIFF data file size in (Mb)

3.40

TIF Data Link

URL hyperlink

1

Mandatory

Data Supplier / Derived

Link to access TIF data.

http://...

 


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