Climate Victoria: Reference Evapotranspiration (FAO-56; 9 second, approx. 250 m)

Brief description

Daily (1990-2014) reference evapotranspiration (FAO-56) across Victoria at a spatial resolution of 9 seconds (approx. 250 m).
Lineage: A) Data processing:
Daily reference evapotranspiration calculated following Allen (1998; FAO-56).
Daily saturation vapour pressure calculated using the August-Roche-Magnus equation (Alduchov & Eskridge 1996).
B) Input datasets:
1) Gridded daily solar radiation data produced using hourly satellite images as part of the AWAP project were obtained from the Australian Bureau of Meteorology (http://www.bom.gov.au/). Imagery from the Geostationary Meteorological Satellite series operated by Japan Meteorological Agency (JMA) and from GOES-9 operated by the National Oceanographic & Atmospheric Administration (NOAA) for the JMA is used by the BoM to process each daily scene. Analysis of the data series between January 1990 and July 2014 indicated that 4.8% of the scenes were not available (due to data quality issues, technical interruptions, etc.). In order to ensure a continuous data series, gaps for any given day were filled by taking the long-term average across all scenes within 5 days of the target date.
2) Near-surface wind speed (McVicar 2011; https://doi.org/10.25919/5c5106acbcb02)
3) Minimum temperature (Stewart & Nitschke 2018; https://doi.org/10.25919/5c183912b47c7)
4) Maximum temperature (Stewart & Nitschke 2018; https://doi.org/10.25919/5c182fd156dd9)
5) Vapour pressure (Stewart et al. 2020; https://doi.org/10.25919/5e3be4e3511bf)