# A variable 'ZF' from METCRO3D?

**URL:** <https://forum.cmascenter.org/t/a-variable-zf-from-metcro3d/608>\
**Category:** MCIP\
**Created:** [April 11, 2019, 8:32am UTC](https://forum.cmascenter.org/t/a-variable-zf-from-metcro3d/608 "2019-04-11T08:32:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![gc13141112](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.cmascenter.org/gc13141112/32/78_2.png) [@gc13141112](https://forum.cmascenter.org/u/gc13141112)\
**Post date:** [April 11, 2019, 8:32am UTC](https://forum.cmascenter.org/t/a-variable-zf-from-metcro3d/608/1 "2019-04-11T08:32:39Z")

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Which variables from WRF are used to to calculate the ZF (full-layer height above ground) in the METCRO3D?

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**Author:** ![tlspero](https://avatars.discourse-cdn.com/v4/letter/t/bb73d2/32.png) [@tlspero](https://forum.cmascenter.org/u/tlspero)\
**Post date:** [April 11, 2019, 6:48pm UTC](https://forum.cmascenter.org/t/a-variable-zf-from-metcro3d/608/2 "2019-04-11T18:48:31Z")

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Layer heights are calculated in layht.f90 from the coordinate system and the Jacobian, which is calculated in metvars2ctm.f90.

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<div class="post-metadata">

**Author:** ![gc13141112](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.cmascenter.org/gc13141112/32/78_2.png) [@gc13141112](https://forum.cmascenter.org/u/gc13141112)\
**Post date:** [April 12, 2019, 1:50am UTC](https://forum.cmascenter.org/t/a-variable-zf-from-metcro3d/608/3 "2019-04-12T01:50:27Z")

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Thank you for your help!