Preprints
https://doi.org/10.5194/essd-2024-361
https://doi.org/10.5194/essd-2024-361
21 Nov 2024
 | 21 Nov 2024
Status: this preprint is currently under review for the journal ESSD.

The European Forest Disturbance Atlas: a forest disturbance monitoring system using the Landsat archive

Alba Viana-Soto and Cornelius Senf

Abstract. Forests in Europe are undergoing complex changes that require a comprehensive monitoring of disturbance occurrence. Here we present the European Forest Disturbance Atlas (EFDA), a Landsat-based approach for mapping annual forest disturbances across continental Europe since 1985. We built a consistent Landsat data cube of summer composites and compiled reference data on forest land use and forest disturbances. A classification-based approach was developed to detect forest disturbances annually, therefore accounting for multiple disturbance events per time-series. The EFDA contains annual layers on disturbance occurrence, severity and agent, as well as aggregated layers on the number of disturbances and the latest and greatest disturbance year. Based on the annual disturbance estimates (1985–2023), we quantified a total forest disturbed area of 439,000 km2, increasing to 610,000 km2 when accounting for multiple disturbance events. Map accuracies of the disturbance classification showed an overall F1-score of 0.89, with very low errors (<1 %) for the undisturbed class and with commission and omission errors for the disturbed class of 17.3 % and 22.5 %, respectively. Further, temporal validation revealed errors decreased over time, with commission substantially decreases to 10.6 % after the year 2000. The workflow implemented to create annual forest disturbance maps was designed for easy updating when new data arrives and in an open access framework to facilitate reproducibility, thus paving the road for an operational forest disturbance system in Europe. EFDA products are available at https://doi.org/10.5281/zenodo.13333034 (Viana-Soto and Senf, 2024).

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Alba Viana-Soto and Cornelius Senf

Status: open (until 10 Jan 2025)

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Alba Viana-Soto and Cornelius Senf

Data sets

European Forest Disturbance Atlas (v2.1.1.) Alba Viana-Soto and Cornelius Senf https://doi.org/10.5281/zenodo.13333034

European Forest Disturbance Atlas viewer Alba Viana-Soto and Cornelius Senf https://albaviana.users.earthengine.app/view/european-forest-disturbance-map

Model code and software

Code for European-Forest-Disturbance-Atlas Alba Viana Soto https://github.com/albaviana/European-Forest-Disturbance-Atlas

FORCE: Framework for Operational Radiometric Correction for Environmental monitoring David Franzt https://force-eo.readthedocs.io/en/latest/

Alba Viana-Soto and Cornelius Senf

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Short summary
Europe's forests are undergoing complex changes in response to increasing disturbances driven by climate and land use changes. We present here the European Forest Disturbance Atlas, a satellite-based approach for mapping annual forest disturbances across continental Europe since 1985. Maps provide insights into the year of disturbance occurrence, the actual frequency of disturbances, severity and the underlying causal agent, thus contributing to a future monitoring system envisioned for Europe.
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