Articles | Volume 11, issue 7
Geosci. Model Dev., 11, 2897–2922, 2018
https://doi.org/10.5194/gmd-11-2897-2018
Geosci. Model Dev., 11, 2897–2922, 2018
https://doi.org/10.5194/gmd-11-2897-2018

Model description paper 16 Jul 2018

Model description paper | 16 Jul 2018

Adding four-dimensional data assimilation by analysis nudging to the Model for Prediction Across Scales – Atmosphere (version 4.0)

Orren Russell Bullock Jr. et al.

Model code and software

Adding Four Dimensional Data Assimilation by Analysis Nudging to the Model for Prediction Across Scales - Atmosphere (MPAS-A) Version 4.0 O. R. Bullock Jr., H. Foroutan, R. C. Gilliam, and J. A. Herwehe https://doi.org/10.5281/zenodo.1101204

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Short summary
The U.S. Environmental Protection Agency is developing a new modeling system to investigate air pollution pathways on a global scale. We plan to use the Model for Prediction Across Scales – Atmosphere (MPAS-A) to define the meteorology that affects air pollution transport and fate. In order to do so, MPAS-A must accurately reproduce historical weather conditions. This work demonstrates that our implementation of four-dimensional data assimilation by analysis nudging provides that capability.