# HOW to change the initial input files?

**URL:** <https://nemo-ocean.discourse.group/t/how-to-change-the-initial-input-files/616>\
**Category:** Uncategorized\
**Created:** [18 January 2024 08:05 UTC](https://nemo-ocean.discourse.group/t/how-to-change-the-initial-input-files/616 "2024-01-18T08:05:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sanwer](https://avatars.discourse-cdn.com/v4/letter/s/d9b06d/32.png) [@sanwer](https://nemo-ocean.discourse.group/u/sanwer)\
**Post date:** [18 January 2024 08:05 UTC](https://nemo-ocean.discourse.group/t/how-to-change-the-initial-input-files/616/1 "2024-01-18T08:05:23Z")

</div>

I am a beginner using the sea air coupling mode of Nemo and Speed. During use, I am not sure how to change the initial field file of the Nemo module. I would like to inquire where I can obtain the initial field file in ORCA2 grid format.  
At the same time, when I tried to restart the coupling mode, if I ran it for a year and then restarted it, I could run it again. However, when I only ran it for a month and then restarted the mode, the program would freeze and not prompt any error messages, only displaying a normal interface.  
thanks