Articles | Volume 17, issue 10
Development and technical paper
23 May 2024
Development and technical paper |  | 23 May 2024

Incremental analysis update (IAU) in the Model for Prediction Across Scales coupled with the Joint Effort for Data assimilation Integration (MPAS–JEDI 2.0.0)

Soyoung Ha, Jonathan J. Guerrette, Ivette Hernández Baños, William C. Skamarock, and Michael G. Duda

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Cited articles

Anderson, J. L., Hoar, T., Raeder, K., Liu, H., Collins, N., Torn, R., and Avellano, A.: The Data Assimilation Research Testbed: A Community Facility, B. Am. Meteorol. Soc., 90, 1283–1296,, 2009. a
Bhargava, K., Kalnay, E., Carton, J. A., and Yang, F.: Estimation of Systematic Errors in the GFS Using Analysis Increments, J. Geophys. Res.-Atmos., 123, 1626–1637,, 2018. a
Bloom, S. C., Takacs, L. L., Silva, A. M. D., and Ledvina, D.: Data assimilation using Incremental Analysis Updates, Mon. Weather Rev., 124, 1256–1271,<1256:DAUIAU>2.0.CO;2, 1996. a
Buehner, M., McTaggart-Cowan, R., Beaulne, A., Charette, C., Garand, L., Heilliette, S., Lapalme, E., Laroche, S., Macpherson, S. R., Morneau, J., And Zadra, A.: Implementation of Deterministic Weather Forecasting Systems Based on Ensemble–Variational Data Assimilation at Environment Canada. Part I: The Global System, Mon. Weather Rev., 143, 2532–2559,, 2015. a
Courtier, P., Thépaut, J.-N., and Hollingsworth, A.: A strategy for operational implementation of 4D-Var, using an incremental approach, Q. J. Roy. Meteor. Soc., 120, 1367–1387,, 1994. a
Short summary
To mitigate the imbalances in the initial conditions, this study introduces our recent implementation of the incremental analysis update (IAU) in the Model for Prediction Across Scales – Atmospheric (MPAS-A) component coupled with the Joint Effort for Data assimilation Integration (JEDI) through the cycling system. A month-long cycling run demonstrates the successful implementation of the IAU capability in the MPAS–JEDI cycling system.