NetCDF data in Canada: sources and checks

What the source records show

The selected country export contains 243,437 listed format declarations across 89 publishers.

NetCDF accounts for 0.1% of that declaration total.

A resource record describes a file or a service. Several records can belong to one dataset.

The export retains up to 20 format labels per publisher. It excludes some small publishers and empty format labels.

Choose a source

The largest matching entry is Environment and Climate Change Canada.

It contributes 224 matching resource records, or 71.3% of this format sample.

The next entry contributes 87 matching records.

A large count indicates more catalogue records. It does not establish accuracy, completeness, or public access.

1. Open a source record from the examples below.
2. Confirm the geographic area and observation period on the source page.
3. Read the licence for the selected dataset.
4. Select the required file or service from the source page.

Inspect the format

NetCDF stores variables with dimensions and attributes. Scientific interpretation depends on the units and coordinate metadata.

1. List the variables, dimensions, and attributes.
2. Identify the variable and coordinate axes for your question.
3. Check units, fill values, and scale factors.
4. Check the time units and calendar before date conversion.
5. Select a small geographic and time subset first.

Check the result

A format label does not verify the file contents. A source can change its files after the catalogue export.

A metadata modification date can describe a catalogue edit. It does not necessarily describe the latest observation.

1. Record the source URL, access date, and dataset title.
2. Check the units and the definitions of the fields.
3. Compare a small sample with the source documentation.
4. Retain an original copy before any conversion.
5. State any missing periods, regions, or values in the result.

How this comparison works

The calculation sums listed format declarations from the publisher export.

It groups equivalent format labels and retains separate counts for XLS, XLSX, TIFF, and GeoTIFF.

Compound labels can remain outside the selected format group. The source files retain the original labels.

The source records can include several versions of the same data. The totals do not count unique observations.

The examples are selections from stored catalogue samples. They do not list every matching dataset.