# How download wrfcmaq\_twoway\_coupler?

**URL:** <https://forum.cmascenter.org/t/how-download-wrfcmaq-twoway-coupler/2854>\
**Category:** WRF-CMAQ\
**Created:** [December 3, 2021, 6:14am UTC](https://forum.cmascenter.org/t/how-download-wrfcmaq-twoway-coupler/2854 "2021-12-03T06:14:35Z")\
**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:** [December 3, 2021, 6:14am UTC](https://forum.cmascenter.org/t/how-download-wrfcmaq-twoway-coupler/2854/1 "2021-12-03T06:14:35Z")

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I’m installing the WRFv4.3-CMAQv5.3.3 model, but this web site ([https://github.com/USEPA/CMAQ/blob/UTIL/wrfcmaq\_twoway\_coupler](https://github.com/USEPA/CMAQ/blob/UTIL/wrfcmaq_twoway_coupler)) don’t give download link of wrfcmaq\_twoway\_coupler. Can you tell me where to download? Thanks in advance for your help!

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**Author:** ![foley.kristen](https://avatars.discourse-cdn.com/v4/letter/f/d9b06d/32.png) [@foley.kristen](https://forum.cmascenter.org/u/foley.kristen)\
**Post date:** [December 3, 2021, 1:45pm UTC](https://forum.cmascenter.org/t/how-download-wrfcmaq-twoway-coupler/2854/2 "2021-12-03T13:45:38Z")

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Greetings,  
Thank you for your interest in the WRF-CMAQ system. The code used to couple the WRFv4.3-CMAQv5.3.3 models is now released as part of the CMAQ repo. When you clone the CMAQv5.3.3 repo you will have all the files you need on the CMAQ side. You will still need to download and install WRFv4.3.

Please see the [WRF-CMAQ Tutorial for GCC](https://github.com/USEPA/CMAQ/blob/main/DOCS/Users_Guide/Tutorials/CMAQ_UG_tutorial_WRF-CMAQ_build_gcc.md) for step by step instructions. For further documentation see [Chapter 13 of the CMAQ User’s Guide](https://github.com/USEPA/CMAQ/blob/main/DOCS/Users_Guide/CMAQ_UG_ch13_WRF-CMAQ.md).

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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:** [December 4, 2021, 2:16pm UTC](https://forum.cmascenter.org/t/how-download-wrfcmaq-twoway-coupler/2854/3 "2021-12-04T14:16:09Z")

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Thank your. I got it.