Minimum Temperature Projections for Western Australia at 20km Resolution

Monthly minimum temperature projections for Western Australia at a 20-kilometre grid resolution. The dataset provides mean, minimum, maximum, and standard deviation values for two emissions scenarios across five time periods from 1990 to 2099. It was produced by the Department of Water and Environmental Regulation's Climate Science Initiative.

Use Cases

• Model temperature change impacts using the relative change files for annual and seasonal mean projections.
• Compare climate outcomes across the SSP1-2.6 and SSP3-7.0 emissions scenarios for risk assessment.
• Analyze model ensemble spread for each grid point using the provided standard deviation values.
• Assess seasonal variability in minimum temperature using the Summer, Autumn, Winter, and Spring time slices.

Strengths

• Data is bias-corrected to improve accuracy for local applications.
• Includes projections for five distinct time periods spanning 1990 to 2099.
• Provides results from a 10-model NARCliM ensemble, offering a range of outcomes.
• Available in multiple geospatial formats including NetCDF, GeoJSON, and Shapefile.

Limitations

• Projections are limited to two emissions scenarios, lacking a middle-of-the-road SSP2-4.5 scenario.
• Spatial resolution is 20km, which may be too coarse for hyper-local analysis.
• Technical limitations and appropriate usage caveats are detailed in a separate fact sheet, requiring user review.

Provenance

Source

Department of Water and Environmental Regulation, Climate Science Initiative.

Collection Method

Downscaled projections from the NSW and Australian Regional Climate Modelling (NARCliM) ensemble, representing 10 Global Climate Models.

Time Range

Baseline (1990-2009), 2030 (2020-2039), 2050 (2040 -2059), 2070 (2060-2079), 2090 (2080-2099).

Freshness

Last updated March 2026.

Geography

Western Australia, Australia.