Australia-Wide 30-Meter Canopy Height Model Composites

Two 30-meter spatial resolution canopy height model composites for continental Australia: a best-pick model and a median model. The products were developed to improve the accuracy and consistency of existing models derived from data spanning 2007 to 2020. Each product is a single-band GeoTIFF raster in the Australian Albers coordinate reference system.

Use Cases

• Estimate forest carbon stocks across Australia using the 30-meter resolution best-pick canopy height model for biomass modeling.
• Monitor changes in vegetation structure over time by comparing the median canopy height model against historical or future datasets.
• Assess ecosystem health and habitat structure by analyzing spatial patterns in the 30-meter canopy height composites.
• Validate other large-scale canopy height models using the best-pick product derived from an extensive validation of four original CHMs.

Strengths

• Provides continental-scale coverage for Australia.
• Offers two distinct products (best-pick and median) at a consistent 30-meter spatial resolution.
• Derived from an extensive validation of four original canopy height models spanning up to 13 years (2007-2020).

Limitations

• The underlying source data spans a long and variable time period (2007-2020), which may not represent a single consistent snapshot.
• The dataset's accuracy is dependent on the four original models used, which may contain inherent errors or biases.
• As a composite product, it may smooth over fine-scale temporal or spatial variations present in the original data.

Provenance

Source

Terrestrial Ecosystem Research Network's Data Discovery, part of the OzTreeMap project.

Collection Method

Machine learning-derived composites (best-pick and median) generated from an extensive validation of four original canopy height models.

Time Range

Derived from source data ranging from 2007 to 2020.

Freshness

The dataset metadata was last updated in March 2026, but the source data temporal coverage ends in 2020.

Geography

Continental Australia.