# Does old emission input data work with new version of CMAQ-5.3.1?

**URL:** <https://forum.cmascenter.org/t/does-old-emission-input-data-work-with-new-version-of-cmaq-5-3-1/1271>\
**Category:** CMAQ\
**Created:** [February 1, 2020, 2:49pm UTC](https://forum.cmascenter.org/t/does-old-emission-input-data-work-with-new-version-of-cmaq-5-3-1/1271 "2020-02-01T14:49:17Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Ben\_Murphy](https://avatars.discourse-cdn.com/v4/letter/b/74df32/32.png) [@Ben\_Murphy](https://forum.cmascenter.org/u/Ben_Murphy)\
**Post date:** [January 3, 2023, 3:07pm UTC](https://forum.cmascenter.org/t/does-old-emission-input-data-work-with-new-version-of-cmaq-5-3-1/1271/5 "2023-01-03T15:07:33Z")

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Hi Jason,

Can you confirm what version of CMAQ you are using, and what mechanisms you are tying to map from and to?

Best wishes,  
Ben Murphy

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