# Help to use module "diaar5"

**URL:** <https://nemo-ocean.discourse.group/t/help-to-use-module-diaar5/552>\
**Category:** v4.0.x\
**Tags:** orca\
**Created:** [10 August 2023 06:51 UTC](https://nemo-ocean.discourse.group/t/help-to-use-module-diaar5/552 "2023-08-10T06:51:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![elsy](https://yyz2.discourse-cdn.com/free1/user_avatar/nemo-ocean.discourse.group/elsy/32/163_2.png) [@elsy](https://nemo-ocean.discourse.group/u/elsy)\
**Post date:** [10 August 2023 06:51 UTC](https://nemo-ocean.discourse.group/t/help-to-use-module-diaar5/552/1 "2023-08-10T06:51:13Z")

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Assistance with “key\_diaar5,” my intention is to simulate sea level using version 4.0.6 of NEMO. In the manual, they describe the “diaar5” module; however, they do not indicate whether this version includes this “key.” If anyone could assist me with this module, thank you.

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**Author:** ![Saeed](https://avatars.discourse-cdn.com/v4/letter/s/e8c25b/32.png) [@Saeed](https://nemo-ocean.discourse.group/u/Saeed)\
**Post date:** [10 August 2023 12:04 UTC](https://nemo-ocean.discourse.group/t/help-to-use-module-diaar5/552/2 "2023-08-10T12:04:08Z")

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Hi

I do not think you need any key to be able to use diaar5. I do not see any key associated with dia\_ar5 and you should be able to use it. Any how in order to enable it you need to active it via your xml for xios:

```plaintext

 l_ar5 = .FALSE.
      IF( iom_use( 'voltot' ) .OR. iom_use( 'sshtot' ) .OR. iom_use( 'sshdyn' ) .OR. &
         & iom_use( 'masstot' ) .OR. iom_use( 'temptot' ) .OR. iom_use( 'saltot' ) .OR. &
         & iom_use( 'botpres' ) .OR. iom_use( 'sshthster' ) .OR. iom_use( 'sshsteric' ) ) L_ar5 = .TRUE.

```

You need to activate one of above diagnostic in your xml file.

Hope it helps.

Best

Saeed