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APSIMInitiative / ApsimX

ApsimX is the next generation of APSIM
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Improved Soil Water Balance #6124

Open hut104 opened 3 years ago

hut104 commented 3 years ago

Soilwater is the most widely used soil water balance in APSIM NG. SWIM3 is currently being tested within NG to provide a Richards' equation approach. We have an existing opportunity to access resources to explore the development of a mid-range soil water balance that includes the simplicity of soilwater but includes more of the physical and numerical advantages of SWIM3. This will provide a more comprehensive soil water module in APSIM NG. This will bring a more mechanistic approach to the modelling of the underlying physics of the soil and enables linkage to a range of more detailed hydrologic processes (evaporation, subsurface drainage, solute movement, water tables) developed with the APSIM SWIM3 Classic model.

hol353 commented 3 years ago

@APSIMInitiative/soil

HamishBrownPFR commented 3 years ago

Are dealing with hydrophobicity and by-bass flow being considered?

hut104 commented 3 years ago

We are starting simply with the basic intent to see how far a postdoc can get in 6 months. We’ll start with generic water redistribution, then perhaps move to evaporation etc.

From: Hamish Brown notifications@github.com Sent: Tuesday, 23 February 2021 4:50 AM To: APSIMInitiative/ApsimX ApsimX@noreply.github.com Cc: Huth, Neil (A&F, Toowoomba) Neil.Huth@csiro.au; Author author@noreply.github.com Subject: Re: [APSIMInitiative/ApsimX] Improved Soil Water Balance (#6124)

Are dealing with hydrophobicity and by-bass flow being considered?

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rcichota commented 3 years ago

Very interesting. I'd be interested in seeing how this develops. There are a few processes that our water models do that can/could be improved, as Hamish said by-pass flow and hydrophobicity are some we keep stumbling to, but even the more basic ones like evaporation also need a look. Runoff is another one...