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Issues with Restarting ICEPACK Standalone v1.4.0 and Setting Initial Temperature Conditions

Ajay Bhadran

Ajay Bhadran
New Member
Hello everyone,

I am currently using the ICEPACK standalone driver (version 1.4.0) and am facing some challenges with model restart and initialization, particularly concerning initial temperature conditions.

1. Restart Issue
I attempted to restart the model using the restart option specified in the `icepack_in` file. For your reference, I have attached the following files:
- `icepack_in`
- settings file
- log file

Unfortunately, the model stops with an error during the restart process. I would greatly appreciate guidance on the correct procedure to enable and run a restart in ICEPACK standalone.

2. Initial Condition Problem
As an alternative approach, I tried to manually set the initial conditions, but I am uncertain if I did this correctly. Currently, I define the initial ice thickness and snow depth directly in `icedrv_init.F90` (around lines 1420 and 1429). This method works for initializing thickness; however, I am unable to set:
- the exact surface temperature, or
- the initial internal ice temperature profile.

Consequently, the simulated surface temperature is higher than observed, which leads to a bias that propagates throughout the simulation, causing the final model output to deviate significantly from actual observations.

Due to my limited understanding, I am modifying `icedrv_init` directly, but I am not confident that this is the recommended approach. I would appreciate advice on the proper way to set initial surface and internal temperature conditions in ICEPACK standalone.

Thank you very much for your time and assistance.

Best regards,
Ajay
 

Attachments

  • icepack.runlog.260113-193005.txt
    13.9 KB · Views: 0
  • icepack_in.txt
    7.8 KB · Views: 0
  • icepack.settings.txt
    3.6 KB · Views: 0
  • icedrv_init.txt
    67.7 KB · Views: 0

dbailey

CSEG and Liaisons
Staff member
I don't think the SST is saved to the restart, so I believe this might be a time interpolation issue with reading in the dataset. Let me look into this further.
 
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