Articles | Volume 14, issue 5
Geosci. Model Dev., 14, 2867–2897, 2021
https://doi.org/10.5194/gmd-14-2867-2021
Geosci. Model Dev., 14, 2867–2897, 2021
https://doi.org/10.5194/gmd-14-2867-2021

Model evaluation paper 20 May 2021

Model evaluation paper | 20 May 2021

The Community Multiscale Air Quality (CMAQ) model versions 5.3 and 5.3.1: system updates and evaluation

K. Wyat Appel et al.

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Short summary
This paper details the scientific updates in the recently released CMAQ version 5.3 (and v5.3.1) and also includes operational and diagnostic evaluations of CMAQv5.3.1 against observations and the previous version of the CMAQ (v5.2.1). This work was done to improve the underlying science in CMAQ. This article is used to inform the CMAQ modeling community of the updates to the modeling system and the expected change in model performance from these updates (versus the previous model version).