Evapotranspiration maps

Please note that we are currently experiencing some delays in the delivery of products and services to our website of up to 45 minutes at times.

	Climate Maps Evapotranspiration
	Use the Selector below to get Australian maps showing mean areal actual, areal potential and point potential evapotranspiration.

Select from the pull down menu and click the Get Map button


The evapotranspiration maps shown on this page are available as a hard-copy climate atlas or in a gridded electronic format.

Definition of evapotranspiration parameters		*Full text description*
*Areal actual ET* is the ET that actually takes place, under the condition of existing water supply, from an area so large that the effects of any upwind boundary transitions are negligible and local variations are integrated to an areal average.
*Areal potential ET* is the ET that would take place, under the condition of unlimited water supply, from an area so large that the effects of any upwind boundary transitions are negligible and local variations are integrated to an areal average.
*Point potential ET* is the ET that would take place, under the condition of unlimited water supply, from an area so small that the local ET effects do not alter local airmass properties. It is assumed that latent and sensible heat transfers within the height of measurement are through convection only.