# If both BRY and CLM are enabled, which boundary force is used preferentially by the model?

**URL:** <https://forum.croco-ocean.org/t/if-both-bry-and-clm-are-enabled-which-boundary-force-is-used-preferentially-by-the-model/468>\
**Category:** run / config issues\
**Tags:** CROCO-tools, forcing\
**Created:** [June 19, 2023, 8:04am UTC](https://forum.croco-ocean.org/t/if-both-bry-and-clm-are-enabled-which-boundary-force-is-used-preferentially-by-the-model/468 "2023-06-19T08:04:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![yzhgg](https://forum.croco-ocean.org/letter_avatar_proxy/v4/letter/y/b2d939/32.png) [@yzhgg](https://forum.croco-ocean.org/u/yzhgg)\
**Post date:** [June 19, 2023, 8:04am UTC](https://forum.croco-ocean.org/t/if-both-bry-and-clm-are-enabled-which-boundary-force-is-used-preferentially-by-the-model/468/1 "2023-06-19T08:04:29Z")

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I want to force the boundary with FRC\_BRY and nudging the temperature and salinity of the whole field with CLIMATOLOGY.

As shown in the figure,this is my cppdefs.h

![image description](https://forum.croco.noocloud.space/uploads/default/original/1X/ff2d01e356cbb58da5200857f50984e790e262cd.png)

(CROCO must define TCLIMATOLOGY in order to define TNUDGING, otherwise it will not compile)

The data used for FRC\_BRY is different from the data used for CLIMATOLOGY, so if both BRY and CLM are enabled, which boundary force is used preferentially by the model?