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Leire Retegui-Schiettekatte edited this page May 18, 2026 · 6 revisions

Welcome to the AAUDA wiki!

In this Wiki you will find documentation to learn how to use the AAUDA framework.

General description

The Aalborg University Data Assimilation framework (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. The original model was developped by Albert van Dijk [1] [2].

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

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