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

Appel, K. Wyat; Bash, Jesse O.; Fahey, Kathleen M.; Foley, Kristen M.; Gilliam, Robert C.; Hogrefe, Christian; Hutzell, William T.; Kang, Daiwen; Mathur, Rohit; Murphy, Benjamin N.; Napelenok, Sergey L.; Nolte, Christopher G.; Pleim, Jonathan E.; Pouliot, George A.; Pye, Havala O. T.; Ran, Limei; Roselle, Shawn J.; Sarwar, Golam; Schwede, Donna B.; Sidi, Fahim I.; Spero, Tanya L.; Wong, David C.

doi:https://doi.org/10.5194/gmd-14-2867-2021

Articles | Volume 14, issue 5

Geosci. Model Dev., 14, 2867–2897, 2021

https://doi.org/10.5194/gmd-14-2867-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Geosci. Model Dev., 14, 2867–2897, 2021

https://doi.org/10.5194/gmd-14-2867-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 5

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.

Supplement

https://doi.org/10.5194/gmd-14-2867-2021-supplement

Model code and software

CMAQ version 5.3 K. Wyat Appel, Jesse O. Bash, Kathleen M. Fahey, Kristen M. Foley, Robert C. Gilliam, Christian Hogrefe, William T. Hutzell, Daiwen Kang, Rohit Mathur, Benjamin N. Murphy, Sergey L. Napelenok, Christopher G. Nolte, Jonathan E. Pleim, George A. Pouliot, Havala O. T. Pye, Limei Rana, Shawn J. Roselle, Golam Sarwar, Donna B. Schwede, Fahim Sidi, Tanya L. Spero, and David C. Wong https://doi.org/10.5281/zenodo.3379043

CMAQ version 5.3.1 K. Wyat Appel, Jesse O. Bash, Kathleen M. Fahey, Kristen M. Foley, Robert C. Gilliam, Christian Hogrefe, William T. Hutzell, Daiwen Kang, Rohit Mathur, Benjamin N. Murphy, Sergey L. Napelenok, Christopher G. Nolte, Jonathan E. Pleim, George A. Pouliot, Havala O. T. Pye, Limei Rana, Shawn J. Roselle, Golam Sarwar, Donna B. Schwede, Fahim Sidi, Tanya L. Spero, and David C. Wong https://doi.org/10.5281/zenodo.3585898

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).