The Modular and Integrated Data Assimilation System at Environment and Climate Change Canada (MIDAS v3.9.1)

Buehner, Mark; Caron, Jean-Francois; Lapalme, Ervig; Caya, Alain; Du, Ping; Rochon, Yves; Skachko, Sergey; Bani Shahabadi, Maziar; Heilliette, Sylvain; Deshaies-Jacques, Martin; Chang, Weiguang; Sitwell, Michael

doi:https://doi.org/10.5194/gmd-18-1-2025

Articles | Volume 18, issue 1

https://doi.org/10.5194/gmd-18-1-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-18-1-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 1

Development and technical paper

|

06 Jan 2025

Development and technical paper |

| 06 Jan 2025

The Modular and Integrated Data Assimilation System at Environment and Climate Change Canada (MIDAS v3.9.1)

Mark Buehner, Jean-Francois Caron, Ervig Lapalme, Alain Caya, Ping Du, Yves Rochon, Sergey Skachko, Maziar Bani Shahabadi, Sylvain Heilliette, Martin Deshaies-Jacques, Weiguang Chang, and Michael Sitwell

Model code and software

Modular and Integrated Data Assimilation System (MIDAS) version 3.9.1 ECCC https://doi.org/10.5281/zenodo.10849225

Short summary

The Modular and Integrated Data Assimilation System (MIDAS) software is described. The flexible design of MIDAS enables both deterministic and ensemble prediction applications for the atmosphere and several other Earth system components. It is currently used for all main operational weather prediction systems in Canada and also for sea ice and sea surface temperature analysis. The use of MIDAS for multiple Earth system components will facilitate future research on coupled data assimilation.