Articles | Volume 15, issue 20
Geosci. Model Dev., 15, 7859–7878, 2022
https://doi.org/10.5194/gmd-15-7859-2022
Geosci. Model Dev., 15, 7859–7878, 2022
https://doi.org/10.5194/gmd-15-7859-2022
Development and technical paper
26 Oct 2022
Development and technical paper | 26 Oct 2022

Data assimilation for the Model for Prediction Across Scales – Atmosphere with the Joint Effort for Data assimilation Integration (JEDI-MPAS 1.0.0): EnVar implementation and evaluation

Zhiquan Liu et al.

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Short summary
JEDI-MPAS 1.0.0, a new data assimilation (DA) system for the MPAS model, was publicly released for community use. This article describes JEDI-MPAS's implementation of the ensemble–variational DA technique and demonstrates its robustness and credible performance by incrementally adding three types of microwave radiances (clear-sky AMSU-A, all-sky AMSU-A, clear-sky MHS) to a non-radiance DA experiment. We intend to periodically release new and improved versions of JEDI-MPAS in upcoming years.