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Hellwig, Florian Marcus und Jagdhuber, Thomas und Fluhrer, Anke und Dubois, Clémence und Chaparro, David und Schellenberg, Konstantin und Piles, María und Schmullius, Christiane und Entekhabi, Dara (2023) Multi-Frequency Radiometry for Multi-Year Monitoring of Relative Water Content In A Temperate Forest. In: International Geoscience and Remote Sensing Symposium (IGARSS), Seiten 2739-2742. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2023-07-16 - 2023-07-21, Los Angeles, USA. doi: 10.1109/IGARSS52108.2023.10281760.
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Kurzfassung
This study presents a comparison between satellite-based vegetation optical depth (VOD) from multi-frequency radiometry (X-, C- and L-band), VOD-derived relative water content (RWC) and auxiliary data (e.g., evapotranspiration and soil moisture), which are investigated for their sensitivity to water status of tree canopies under dry and wet conditions for a temperate forest in Thuringia, Central Germany. For this, we estimated RWC directly from VOD normalization assuming no major changes in vegetation biomass or plant structure during the study period (2015-2019). Our results show that RWC seasonalities are aligned for all investigated frequencies showing its maximum in early summer when leaves and twigs of the top and low canopy are particularly wet and photosynthetically active. Investigating drought versus non-drought years, we observed that X-band RWC is the one better capturing drought status by exhibiting low values in the extreme drought year 2018 compared to the wet year 2017 while L-band RWC reflects the ecological memory from the extreme drought conditions in 2018 in year 2019 estimates.
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| Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||||||||||||||
| Titel: | Multi-Frequency Radiometry for Multi-Year Monitoring of Relative Water Content In A Temperate Forest | ||||||||||||||||||||||||||||||||||||||||
| Autoren: |
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| Datum: | 20 Oktober 2023 | ||||||||||||||||||||||||||||||||||||||||
| Erschienen in: | International Geoscience and Remote Sensing Symposium (IGARSS) | ||||||||||||||||||||||||||||||||||||||||
| Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||||||||||
| Open Access: | Nein | ||||||||||||||||||||||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||||||||||
| In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.1109/IGARSS52108.2023.10281760 | ||||||||||||||||||||||||||||||||||||||||
| Seitenbereich: | Seiten 2739-2742 | ||||||||||||||||||||||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||||||||||||||||||||||
| Stichwörter: | Radiometry, multi-frequency, forest, relative water content, vegetation optical depth, AMSR2, SMAP, Hainich National Park | ||||||||||||||||||||||||||||||||||||||||
| Veranstaltungstitel: | IEEE International Geoscience and Remote Sensing Symposium (IGARSS) | ||||||||||||||||||||||||||||||||||||||||
| Veranstaltungsort: | Los Angeles, USA | ||||||||||||||||||||||||||||||||||||||||
| Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||||||||||||||
| Veranstaltungsdatum: | 2023-07-16 - 2023-07-21 | ||||||||||||||||||||||||||||||||||||||||
| Veranstalter : | IEEE Geoscience and Remote Sensing Society (GRSS) | ||||||||||||||||||||||||||||||||||||||||
| 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 - Sicherheitsrelevante Erdbeobachtung | ||||||||||||||||||||||||||||||||||||||||
| Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Hochfrequenztechnik und Radarsysteme > Aufklärung und Sicherheit | ||||||||||||||||||||||||||||||||||||||||
| Hinterlegt von: | Hellwig, Florian Marcus | ||||||||||||||||||||||||||||||||||||||||
| Hinterlegt am: | 07 Nov 2023 11:37 | ||||||||||||||||||||||||||||||||||||||||
| Letzte Änderung: | 15 Jan 2024 13:40 |
Verfügbare Versionen dieses Eintrags
-
MULTI-FREQUENCY RADIOMETRY FOR MULTI-YEAR MONITORING OF
RELATIVE WATER CONTENT IN A TEMPERATE FOREST. (deposited 28 Jun 2023 11:05)
-
Multi-Frequency Radiometry for Multi-Year Monitoring of Relative Water Content In A Temperate Forest. (deposited 30 Okt 2023 11:27)
- Multi-Frequency Radiometry for Multi-Year Monitoring of Relative Water Content In A Temperate Forest. (deposited 07 Nov 2023 11:37) [Gegenwärtig angezeigt]
-
Multi-Frequency Radiometry for Multi-Year Monitoring of Relative Water Content In A Temperate Forest. (deposited 30 Okt 2023 11:27)
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