!! Error in T0 prognose in [xx,xx]: Invalid T0 $$

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grjonathan
Posts: 24
Joined: Tue May 28, 2019 12:50 pm
Location: Ryerson University

!! Error in T0 prognose in [xx,xx]: Invalid T0 $$

Postby grjonathan » Fri Aug 02, 2019 2:04 pm

I am trying to diagnose the following error causing my simulation to fail immediately after initialization:
!! Error in T0 prognose in [102,113]: Invalid T0 $$
!! I am resetting to reference temperature and q0=7.0. Maybe this solves the problem...
!! However, this is normaly the beginning of the end of this simulation.
!! In order to locate the problem, I am writing a panic dump of the recent model state
!! I will call it "PANIC". Please have a look at it in the normal output folders...

The invalid T0 occurs at several cells in the model, but is confined to the western half. Here is the panic dump air temperature:
panic.JPG

Here are the properties of the simulation:
Full Forcing: temperature, wind, clouds, humidity

Soil Initial temperature:
Upper layer = 5 C
Middle layer = 5 C
Deep layer = 0 C
Bedrock layer = 0 C

Output timing:
Receptors and buildings = 60 min
All other files = 120 min

No other changes to defaults.


The tallest building+terrain is less than half the height of the model domain. The border looks close to the nearest building but those buildings are only 4m high.

The forcing data is somewhat erratic... could that be related?
forcing.JPG


Thanks for the help... I've never encountered this error before.

-Jonathan

Tim
Posts: 913
Joined: Mon May 15, 2017 3:46 pm

Re: !! Error in T0 prognose in [xx,xx]: Invalid T0 $$

Postby Tim » Fri Aug 02, 2019 2:19 pm

Hi Jonathan,

Wow, that's pretty cold there. Could you zip and upload SIMX-, INX- and FOX-file?

Best regards,
Tim

grjonathan
Posts: 24
Joined: Tue May 28, 2019 12:50 pm
Location: Ryerson University

Re: !! Error in T0 prognose in [xx,xx]: Invalid T0 $$

Postby grjonathan » Fri Aug 02, 2019 2:25 pm

Hi Tim,

Can I send you a PM somehow?

Thanks,

Jonathan

grjonathan
Posts: 24
Joined: Tue May 28, 2019 12:50 pm
Location: Ryerson University

Re: !! Error in T0 prognose in [xx,xx]: Invalid T0 $$

Postby grjonathan » Thu Aug 08, 2019 4:14 pm

Figured it out. Somehow, I saved one of my custom soil profiles with an albedo of 13580.04688 :oops:
Thank you Tim for helping me diagnose this.

-Jonathan

Tim
Posts: 913
Joined: Mon May 15, 2017 3:46 pm

Re: !! Error in T0 prognose in [xx,xx]: Invalid T0 $$

Postby Tim » Thu Aug 08, 2019 4:28 pm

Hi Jonathan,

Thanks for your update and great that you could figure it out!
It could be that this value was somehow generated automatically by opening or closing the database, I experienced it myself one time but could not reproduce it anymore. However, in all the tests after it never appeared again, so we could not fix it either.

Best regards,
Tim


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