AAUDA is a Matlab-based framework designed to conduct land hydrological Data Assimilation (DA) experiments. Particularly, it includes scripts to assimilate satellite-based Terrestrial Water Storage (TWS) and Surface Soil Moisture (SSM) observations (retrievals). The current framework offers the following features:
- Spans various DA techniques belonging to the Ensemble Kalman Filter (EnKF) family, including the classical EnKF and the EnKF-Rescaling approach
- Includes different covariance localization techniques such as observation space localization and model space localization
- Offers the possibility to conduct DA experiments in different timescales, ranging daily to monthly.
The framework is currently coupled with the World-Wide Water Resources Assessment (W3RA) water balance model, which was originally developped by Albert van Dijk [1] [2] and can be found in this Dropbox folder.
Note
Repository in construction
This repository is currently under development. The following features will be added in the following months:
- SSM DA scripts
- Multivariate TWS and SSM DA scripts
- DA through the Ensemble Adjustment Kalman Filter (EAKF) approach
- Model space mixed localization approach
The documentation for AAUDA can be found in the GitHub project wiki.
The framework can be directly downloaded or cloned from this GitHub repository. The framework is designed to run in Matlab 2020b. A few Matlab Toolboxes might have to be installed to run specifical functionalities of the framework.
This framework has been developped by Leire Retegui-Schiettekatte, with notable contributions of Maike Schumacher (monthly EnKF), Nooshin Mehrnegar (river routing model), Ehsan Forootan (EnKF-Rescaling approach), Manuela Girotto (mixed covariance localization approach), and Fan Yang (general DA implementation). The W3RA model was originally developped by Albert van Dijk.
The framework is licensed under a
Creative Commons Attribution 4.0 International License.
The framework itself can be cited as:
- Retegui-Schiettekatte, L., 2026. AAUDA. https://doi.org/10.6084/m9.figshare.31741930.v1
Additionally, the usage of some features of the framework (e.g., W3RA model, river routing module or monthly EnKF) requires additional citations. Please visit the "Authorship, licence and citation" seciton of the GitHub project wiki for more information.
The development of this framework was economically supported by the DANSk-LSM project granted by the Independent Research Fund Denmark (DFF, 10.46540/2035-00247B). The main author of the framework, Leire Retegui-Schiettekatte, was also supported by an EliteForsk travel grant from the Ministry of Higher Education and Science of Denmark.
For any queries, please contact Leire Retegui-Schiettekatte.
