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Mean monthly outgoing surface longwave radiation modelled using the 1" DEM-S - 3" mosaic data

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Created 21/01/2025

Updated 21/01/2025

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Mean monthly solar radiation was modelled across Australia using topography from the 1 arcsecond resolution SRTM-derived DEM-S and climatic and land surface data. The SRAD model (Wilson and Gallant, 2000) was used to derive: • Incoming short-wave radiation on a sloping surface • Short-wave radiation ratio (shortwave on sloping surface / shortwave on horizontal surface) • Incoming long-wave radiation • Outgoing long-wave radiation • Net long-wave radiation • Net radiation • Sky view factor All radiation values are in MJ/m2/day except for short-wave radiation ratio which has no units. The sky view factor is the fraction of the sky visible from a grid cell relative to a horizontal plane. The radiation values are determined for the middle day of each month (14th or 15th) using long-term average atmospheric conditions (such as cloudiness and atmospheric transmittance) and surface conditions (albedo and vegetation cover). They include the effect of terrain slope, aspect and shadowing (for sun positions at 5 minute intervals from sunrise to sunset), direct and diffuse radiation and sky view. The data in this collection are available at 3 arcsecond resolution as single (mosaicked) grids for Australia in TIFF format. The 3 arcsecond resolution versions of these radiation surfaces have been produced from the 1 arcsecond resolution surfaces, by aggregating the cells in a 3x3 window and taking the mean value. The 1 arcsecond tiled data can be found here: https://data.csiro.au/dap/landingpage?pid=csiro:18335 . The 1 arcsecond mosaic data can be found here: https://data.csiro.au/dap/landingpage?pid=csiro:9634

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Title Mean monthly outgoing surface longwave radiation modelled using the 1" DEM-S - 3" mosaic data
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/143a6a2b-d5f2-43cf-a0d3-83e77d344754
Contact Point
Environment Protection Authority (EPA) Victoria
esupport@tern.org.au
Reference Period 11/02/2000 - 22/02/2000
Geospatial Coverage {"type": "Polygon", "coordinates": [[[113.0, -44.0], [154.0, -44.0], [154.0, -10.0], [113.0, -10.0], [113.0, -44.0]]]}
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Mean monthly outgoing surface longwave radiation modelled using the 1" DEM-S - 3" mosaic data". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/mean-monthly-outgoing-surface-longwave-radiation-modelled-using-the-1quot-dem-s-3quot-mosaic-da

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