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Exploring Trends, Patterns, and Drivers of African Surface Water Dynamics

Sogno, Patrick und Klein, Igor und Uereyen, Soner und Bachofer, Felix und Kuenzer, Claudia (2024) Exploring Trends, Patterns, and Drivers of African Surface Water Dynamics. EGU General Assembly 2024, 2024-04-14 - 2024-04-19, Wien, Österreich. doi: 10.5194/egusphere-egu24-3573.

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Offizielle URL: https://doi.org/10.5194/egusphere-egu24-3573

Kurzfassung

Water, a fundamental resource for both ecosystems and human populations, faces escalating challenges in Africa due to water stress and changes in climate, demography, and socioeconomics. Because these changes are happening at a rapid pace, it is essential to understand the dynamics of water bodies and the factors that impact them to ensure sustainable usage strategies. Our research aims to analyze the long-term trends of surface water availability in Africa, identify the causal impacts on major water bodies, and explore the similarities between different lakes. We use daily time series based on Earth observation, including the MODIS-based Global WaterPack for a daily uninterrupted time series of the continent's surface water area. Furthermore, we incorporate daily time series of hydrologically relevant variables such as precipitation, total evapotranspiration, groundwater, soil moisture, and Gross Primary Productivity (GPP) to analyze their impact on surface water dynamics of major African lakes. For this, we employ the Peter and Clark Momentary Conditional Independence causal identification algorithm. Our findings reveal subbasin-wide surface water and GPP to be the dominant drivers of surface water dynamics in most cases. We further find that dynamically similar lakes often share common drivers, allowing the generation of regional lake clusters. Understanding the drivers of African lakes may significantly help in the formulation of sustainable development strategies. In conclusion, our continent-wide analysis provides valuable insights, particularly beneficial for stakeholders engaged in international development and ecosystem protection and restoration. As we deal with the challenges of water resource management in Africa, our research aims to contribute substantively to the formulation of strategies that foster sustainability and resilience in the face of evolving environmental and socio-economic conditions.

elib-URL des Eintrags:https://elib.dlr.de/204230/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Exploring Trends, Patterns, and Drivers of African Surface Water Dynamics
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Sogno, PatrickPatrick.Sogno (at) dlr.dehttps://orcid.org/0000-0001-7474-4035165147475
Klein, IgorIgor.Klein (at) dlr.dehttps://orcid.org/0000-0003-0113-8637NICHT SPEZIFIZIERT
Uereyen, Sonersoner.uereyen (at) dlr.dehttps://orcid.org/0000-0003-3733-0049NICHT SPEZIFIZIERT
Bachofer, FelixFelix.Bachofer (at) dlr.dehttps://orcid.org/0000-0001-6181-0187NICHT SPEZIFIZIERT
Kuenzer, Claudiaclaudia.kuenzer (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:18 April 2024
Referierte Publikation:Nein
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
DOI:10.5194/egusphere-egu24-3573
Status:veröffentlicht
Stichwörter:Africa, Remote Sensing, Lakes, Reservoirs, Climate Change, Causality
Veranstaltungstitel:EGU General Assembly 2024
Veranstaltungsort:Wien, Österreich
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:14 April 2024
Veranstaltungsende:19 April 2024
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 > Dynamik der Landoberfläche
Hinterlegt von: Sogno, Patrick
Hinterlegt am:08 Aug 2024 11:21
Letzte Änderung:08 Aug 2024 11:21

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