New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
WaterTables #8834
Comments
You are setting and reading the right variable, but between the manager script running and the report fetching the value, it is being changed from 1800 to 2200 in the daily DoSoilWaterMovement, more specifically line 566 in WaterBalance.cs with MoveDown Flux. I might need someone more familiar with the water flow system to help out here, I'm not sure how the watertable and soil water values should be interacting. |
Neil Huth helped me previously with this. I think he wrote the tool, but I don't think it was straight forward for him either. Dean would probably also be good help.
…________________________________
From: Andrew Paroz ***@***.***>
Sent: Friday, May 3, 2024 12:14:29 AM
To: APSIMInitiative/ApsimX ***@***.***>
Cc: Smethurst, Philip (Environment, Sandy Bay) ***@***.***>; Author ***@***.***>
Subject: Re: [APSIMInitiative/ApsimX] WaterTables (Issue #8834)
I don't really know which is the correct variable to report for depth from the surface to the top of the watertable.
When I try to do so, it doesn't report as the 1.8 m I thought I set.
You are setting and reading the right variable, but between the manager script running and the report fetching the value, it is being changed from 1800 to 2200 in the daily DoSoilWaterMovement, more specifically line 566 in WaterBalance.cs with MoveDown Flux.
I might need someone more familiar with the water flow system to help out here, I'm not sure how the watertable and soil water values should be interacting.
—
Reply to this email directly, view it on GitHub<#8834 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ALYXHJFVGW2QLV3Y6LX2N43ZAMFKLAVCNFSM6AAAAABGBWVWGWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDAOJSGA4TCNJRGY>.
You are receiving this because you authored the thread.Message ID: ***@***.***>
|
I notice that all these variables report the same value: And it depends on the drainage (SWCON) set to zero or not at the bottom of the profile. |
I spent a lot of time trying to understand boundary conditions and matric potentials. Never had much success and suspect my simulations were right for the wrong reasons. |
What happened?
I don't think the WaterTable manager in this simulation attached is working properly, as:
Can you please add a working version of thisWaterTableManager tool to the Management toolbox, and indicate which variable to report.
Adequately simulating watertables is very important for many forest plantation simulations (i.e. Eucalyptus or Pinus modelling).
Also in some cases, nitrate is present in that watertable at a near constant concentrations, as I have used, or perhaps as slowly changing concentrations in some cases. A problem in the simulations is, I think, that nitrate in the watertable denitrfies. So, periodically nitrate has to be added to approximate a stable concentration. In reality, nitrate would not denitrify from a watertable if no available carbon was present, which is the case in the unconfined aquifer in the Mount Gambier region, for example. So that nitrate concentration is stable and is probably available to plants if roots grow down and reach it.
Can this NO3 tool also be improved and added to the Management toolbox?
SimsWTNO3.zip
What Operating System are you on?
Windows
The text was updated successfully, but these errors were encountered: