Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.jhydrol.2015.03.053
Titel (primär) A scaling approach for the assessment of biomass changes and rainfall interception using cosmic-ray neutron sensing
Autor Baroni, G.; Oswald, S.E.
Quelle Journal of Hydrology
Erscheinungsjahr 2015
Department CHS
Band/Volume 525
Seite von 264
Seite bis 276
Sprache englisch
Keywords Cosmic-ray; Soil moisture; Scaling; Interception; Biomass water; Agricultural field
UFZ Querschnittsthemen TERENO; RU5;
Abstract Cosmic-Ray neutron sensing (CRS) is a unique approach to measure soil moisture at field scale filling the gap of current methodologies. However, CRS signal is affected by all the hydrogen pools on the land surface and understanding their relative importance plays an important role for the application of the method e.g., validation of remote sensing products and data assimilation. In this study, a soil moisture scaling approach is proposed to estimate directly the correct CRS soil moisture based on the soil moisture profile measured at least in one position within the field. The approach has the advantage to avoid the need to introduce one correction for each hydrogen contribution and to estimate indirectly all the related time-varying hydrogen pools. Based on the data collected in three crop seasons, the scaling approach shows its ability to identify and to quantify the seasonal biomass water equivalent. Additionally, the analysis conducted at sub-daily time resolution is able to quantify the daily vertical redistribution of the water biomass and the rainfall interception, showing promising applications of the CRS method also for these types of measurements. Overall, the study underlines how not only soil moisture but all the specific hydrological processes in the soil-plant-atmosphere continuum should be considered for a proper evaluation of the CRS signal. For this scope, the scaling approach reveals to be a simple and pragmatic analysis that can be easily extended to other experimental sites.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=16078
Baroni, G., Oswald, S.E. (2015):
A scaling approach for the assessment of biomass changes and rainfall interception using cosmic-ray neutron sensing
J. Hydrol. 525 , 264 - 276 10.1016/j.jhydrol.2015.03.053