# The simulated ozone concentration is low

**URL:** <https://forum.cmascenter.org/t/the-simulated-ozone-concentration-is-low/5593>\
**Category:** CMAQ\
**Created:** [February 17, 2025, 7:51am UTC](https://forum.cmascenter.org/t/the-simulated-ozone-concentration-is-low/5593 "2025-02-17T07:51:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![LMZ](https://avatars.discourse-cdn.com/v4/letter/l/a587f6/32.png) [@LMZ](https://forum.cmascenter.org/u/LMZ)\
**Post date:** [February 17, 2025, 7:51am UTC](https://forum.cmascenter.org/t/the-simulated-ozone-concentration-is-low/5593/1 "2025-02-17T07:51:30Z")

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Dear professors, the current simulation concentration is low, I would like to ask you to help me to see where I have to set the problem? Here are my Settings in the file below  
[run\_cctm\_Bench\_201707wuddm.csh](https://forum.cmascenter.org/uploads/short-url/tgLHdeFrFz22wWCq14TKWKZ0krZ.csh) (38.5 KB)

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**Author:** ![lizadams](https://avatars.discourse-cdn.com/v4/letter/l/49beb7/32.png) [@lizadams](https://forum.cmascenter.org/u/lizadams)\
**Post date:** [March 30, 2025, 7:24pm UTC](https://forum.cmascenter.org/t/the-simulated-ozone-concentration-is-low/5593/2 "2025-03-30T19:24:17Z")

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Marking this as a duplicate post. [Lower simulation concentration](https://forum.cmascenter.org/t/lower-simulation-concentration/5532)

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**Author:** ![lizadams](https://avatars.discourse-cdn.com/v4/letter/l/49beb7/32.png) [@lizadams](https://forum.cmascenter.org/u/lizadams)\
**Post date:** [April 2, 2025, 7:47pm UTC](https://forum.cmascenter.org/t/the-simulated-ozone-concentration-is-low/5593/3 "2025-04-02T19:47:26Z")

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Closed on April 2, 2025, 7:47pm UTC