Published February 9, 2022 | Version v3.0.0
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The Soil Moisture Index program - SMI

  • 1. Helmholtz Centre for Environmental Research UFZ
  • 2. European Centre for Medium Range Weather Forecasts
  • 3. University of Waterloo


This repository contains the soil moisture index (SMI) Fortran program developed at the Dept. Computational Hydrosystems at the Helmholtz Centre for Environmental Research - UFZ.

This sofware was developed initially for Samaniego et al. (2013, Features have been added for subsequent publications. These include Thober et al. (2015,, Zink et al. (2016,, and Samaniego and Thober et al. (2018,

This version is also used in Rakovec et al. (2022) "The 2018–2020 multi-year drought sets a new benchmark in Europe", Earth's Future, 10, e2021EF002394. In particular, it was used in the creation of the associated dataset "The 2018-20 multi-year drought sets a new benchmark in Europe" ( It is also used in the second version of the German Drought Monitor Boeing et al. (2022,

Continuous development of the program is located in the git repository: and its mirror



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Is referenced by
Dataset: 10.5281/zenodo.5801249 (DOI)