# MCIP output layer reduction

**URL:** <https://forum.cmascenter.org/t/mcip-output-layer-reduction/3708>\
**Category:** MCIP\
**Created:** [November 13, 2022, 1:11am UTC](https://forum.cmascenter.org/t/mcip-output-layer-reduction/3708 "2022-11-13T01:11:26Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Hasibul](https://avatars.discourse-cdn.com/v4/letter/h/838e76/32.png) [@Hasibul](https://forum.cmascenter.org/u/Hasibul)\
**Post date:** [November 13, 2022, 1:11am UTC](https://forum.cmascenter.org/t/mcip-output-layer-reduction/3708/1 "2022-11-13T01:11:26Z")

</div>

Hello all,

I have an MCIP output METCRO3D.nc file for CONUS12Km with dimension 459X299X34. It has 34 vertical layers. I want a new METCRO3D.nc file with only the data from the first 7 layers and delete the rest (34-7 = 27 layers) Which tool do I need to use to do that?

Thank you for your help.

Hasibul

---

<div class="post-metadata">

**Author:** ![cgnolte](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.cmascenter.org/cgnolte/32/53_2.png) [@cgnolte](https://forum.cmascenter.org/u/cgnolte)\
**Post date:** [November 13, 2022, 2:00am UTC](https://forum.cmascenter.org/t/mcip-output-layer-reduction/3708/2 "2022-11-13T02:00:59Z")

</div>

I believe m3xtract will do that.  
[https://www.cmascenter.org/ioapi/documentation/all\_versions/html/M3XTRACT.html](https://www.cmascenter.org/ioapi/documentation/all_versions/html/M3XTRACT.html)