Wieland, Marc und Martinis, Sandro (2020) Large-scale surface water change observed by Sentinel-2 during the 2018 drought in Germany. International Journal of Remote Sensing, 41 (12), Seiten 4740-4754. Taylor & Francis. doi: 10.1080/01431161.2020.1723817. ISSN 0143-1161.
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Kurzfassung
Monitoring and understanding the spatio-temporal dynamics of hydrological droughts with seamless geographical coverage over large areas is essential for an assessment of impacts on water resources, industry, transport, and human health. This became parti- cularly relevant during the heat and drought of 2018 in Germany, which affected the country across various sectors and caused sig- nificant interruptions to ship traffic on rivers and lakes with negative impacts on tourism, transportation, and supply chains. In this study, we provide a spatially and temporally consistent view on the 2018 hydrological drought in Germany as seen from Sentinel-2 satellite images. We extract waterbodies with national coverage at different timestamps using an automated processing chain, which is based on a convolutional neural network and has originally been developed for near-real time flood monitoring. The method produces water segmentations with consistently high Overall Accuracy (≥0.95) and Kappa Coefficient (≥0.89), despite varying topography, land-use /land-cover and atmospheric conditions. Furthermore, we identify hotspots of change in water extent at a national scale by comparing monthly water maps for 2018 with the respective maps of the previous year 2017. For the change hotspots, we map change gra- dients and produce water extent time-series with mapping frequen- cies <5 days along a timeline of 12 months.
elib-URL des Eintrags: | https://elib.dlr.de/137482/ | ||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||
Titel: | Large-scale surface water change observed by Sentinel-2 during the 2018 drought in Germany | ||||||||||||
Autoren: |
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Datum: | 2 März 2020 | ||||||||||||
Erschienen in: | International Journal of Remote Sensing | ||||||||||||
Referierte Publikation: | Ja | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Ja | ||||||||||||
In ISI Web of Science: | Ja | ||||||||||||
Band: | 41 | ||||||||||||
DOI: | 10.1080/01431161.2020.1723817 | ||||||||||||
Seitenbereich: | Seiten 4740-4754 | ||||||||||||
Verlag: | Taylor & Francis | ||||||||||||
ISSN: | 0143-1161 | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | Sentinel-2; Drought; Monitoring; Germany | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||
HGF - Programmthema: | Erdbeobachtung | ||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||
DLR - Forschungsgebiet: | R EO - Erdbeobachtung | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Fernerkundung u. Geoforschung | ||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||
Institute & Einrichtungen: | Deutsches Fernerkundungsdatenzentrum > Georisiken und zivile Sicherheit | ||||||||||||
Hinterlegt von: | Wieland, Dr Marc | ||||||||||||
Hinterlegt am: | 19 Nov 2020 11:22 | ||||||||||||
Letzte Änderung: | 04 Dez 2023 15:32 |
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