Description: Das Projekt "Koordinationsfonds" wird vom Umweltbundesamt gefördert und von Universität Potsdam, Institut für Umweltwissenschaften und Geographie, Arbeitsgruppe Wasser- und Stofftransport in Landschaften durchgeführt. The exchange of water between atmosphere, biosphere, and hydrosphere can be viewed as a result of complex interactions of dynamic feedback mechanisms, where soil moisture content acts as the key state variable. Novel approaches are required to handle land surface complexity and scale dependency of water fluxes. State-of-the-art observations of soil moisture content are ranging from continuous point-scale measurements via field-scale snapshots to remote sensing products on the basin scale and beyond. They have to deal with a space-time trade-off since the measurement frequency typically decreases with the covered spatial scale. Thus, in spite of the use of hydrological models, our knowledge of soil moisture patterns, their dynamics, and the underlying processes, is still limited. We aim at bridging existing gaps between scales through additional techniques and sources of information about the soil water storage. Cosmic-ray neutron sensing (CRNS) measures the presence of water by sensing changes in neutron density above the ground. We will develop a quantitative, adaptable, and transferable approach for observing representative soil moisture content values on the field scale while accounting for other dynamic water pools on the land surface, such as biomass, interception, and snow. Furthermore, we will transfer the mapping of soil moisture to larger scales with sensor clusters and mobile neutron detectors. CRNS will function as a unique combination of invasive and non-invasive observations in joint field campaigns. The measurement and interpretation of soil moisture by CRNS requires advanced knowledge of soil hydrology as well as particle physics including neutron transport modeling. Engineering efforts will be made for detector development that aims to substantially improve the temporal resolution and spatial coverage. Ecohydrology is the life-science ingredient to determine the dynamic influence of vegetation and interception on the neutron signal, while catchment hydrology provides the framework for understanding water flow in soils and catchments. Our approach is especially tailored to resolve the discrepancy in support volume and timing between hydrological models and field observations. Comprehensive observations by CRNS, remote sensing and complementary methods will be used concertedly with hydrological and land-surface models at the regional scale to infer also groundwater recharge and atmospheric fluxes. Thereby, models and observations together will allow for identifying patterns and processes at the scale of small catchments with unprecedented spatio-temporal resolution. This research unit will strengthen an engaged and innovative community that constitutes a driving force in the field of soil moisture measurements via CRNS. Our team will provide an excellent and timely starting-point for advancing the frontier of understanding field-scale and regional water storage and fluxes in soil-vegetation-atmosphere systems.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Potsdam ? Bodenvegetation ? Grundwasserneubildung ? Vegetation ? Raumentwicklung ? Buchhaltung ? Fischer-Tropsch-Verfahren ? Landeswassergesetz ? Sensor ? Skigebiet ? Feuchtigkeitsmessung ? Interzeption ? Bodenwasser ? Hydrogeologie ? Kartographie ? Physik ? Schmelzwasser ? Teich ? Biologie ? Wassergesetz ? Bodenfeuchte ? Hydrochemie ? Klimamodell ? Ackerland ? Limnologie ? Regionalmodell ? Schnee ? Siedlungswasserwirtschaft ? Bodenluft ? Stand der Technik ? Systemanalyse ? Wasserströmung ? Wassergehalt ? Gewässerzustand ? Wasserinhaltsstoff ? Wasserspeicher ? Wasser ? Modellierung ? Umweltwissenschaft ? Ökohydrologie ? Bauelement ? Fernerkundung ? Atmosphäre ? Hydrologie ? Landschaft ? Feuchtigkeit ? Hydrosphäre ? Abdeckung ? Partikel ? Biomasse ? Maßnahme ? Erdoberfläche ? Biosphäre ? Integrierte Wasser-Ressourcen Bewirtschaftung ? Fluss [Bewegung] ? Bram-Verfahren ? Adsox-Verfahren ? Neutronen ?
Region: Brandenburg
Bounding box: 13.01582° .. 13.01582° x 52.45905° .. 52.45905°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2018-01-01 - 2024-11-29
Webseite zum Förderprojekt
https://gepris.dfg.de/gepris/projekt/414057883 (Webseite)Accessed 1 times.