[869] - Calibration of a catchment scale cosmic-ray probe network: A comparison of three parameterization methods

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Citation
Baatz, R., Bogena, H., Hendricks-Franssen, H., Huisman, J. A., Qu, W., Montzka, C., Vereecken, H., 2014. Calibration of a catchment scale cosmic-ray probe network: A comparison of three parameterization methods. Journal of Hydrology, 1 - 14. DOI: 10.1016/j.jhydrol.2014.02.026.
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Identification
Title(s):Main Title: Calibration of a catchment scale cosmic-ray probe network: A comparison of three parameterization methods
Description(s):Abstract: The objective of this work was to assess the accuracy of soil water content determination from neutron flux measured by cosmic-ray probes under humid climate conditions. Ten cosmic-ray probes were set up in the Rur catchment located in western Germany, and calibrated by gravimetric soil sampling campaigns. Aboveground biomass was estimated at the sites to investigate the role of vegetation cover on the neutron flux and the calibration procedure. Three parameterization methods were used to generate site-specific neutron flux - soil water content calibration curves: i) the N0-method, ii) the hydrogen molar fraction method (hmf-method), and iii) the COSMIC-method. At five locations, calibration measurements were repeated to evaluate site-specific calibration parameters obtained in two different sampling campaigns. At two locations, soil water content determined by cosmic-ray probes was evaluated with horizontally and vertically weighted soil water content measurements of two distributed in-situ soil water content sensor networks. All three methods were successfully calibrated to determine field scale soil water content continuously at the ten sites. The hmf-method and the COSMIC-method had more similar calibration curves than the N0-method. The three methods performed similarly well in the validation and errors were within the uncertainty of neutron flux measurements despite observed differences in the calibration curves and variable model complexity. In addition, we found that the obtained calibration parameters NCOSMIC, N0 and NS showed a strong correlation with aboveground biomass.
Identifier(s):DOI: 10.1016/j.jhydrol.2014.02.026
Relation(s):References: URL: http://www.tr32db.uni-koeln.de/data.php?dataID=1461
References: URL: http://www.tr32db.uni-koeln.de/data.php?dataID=1462
Citation Advice:Baatz, R., H. Bogena, H. J. Hendricks-Franssen, J. A. Huisman, W. Qu, C. Montzka, and H. Vereecken, 2014: Calibration of a catchment scale cosmic-ray probe network: A comparison of three parameterization methods. J Hydrol., doi: 10.1016/j.jhydrol.2014.02.026
Responsible Party
Creator(s):Author: Roland Baatz
Author: Heye Bogena
Author: Harrie-Jan Hendricks-Franssen
Author: Johan A. Huisman
Author: Wie Qu
Author: Carsten Montzka
Author: Harry Vereecken
Publisher:Elsevier B.V.
Topic
TR32 Topic:Soil
Related Sub-project(s):C6
Subject(s):CRC/TR32 Keywords: Soil Moisture, Cosmic Radiation, Vegetation
Topic Category:Environment
File Details
File Name:BaatzEtAl2013JoH.pdf
Data Type:Text
File Size:2483 kB (2.425 MB)
Date(s):Available: 2014-02-17
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
Constraints
Download Permission:OnlyTR32
Download Information:Accepted Manuscript
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Licence:TR32DB Data policy agreement
Geographic
North:-no map data
East:-
South:-
West:-
Measurement Region:RurCatchment
Measurement Location:--RurCatchment--
Specific Informations - Publication
Status:Accepted
Review:PeerReview
Year:2014
Type:Article
Article Type:Journal
Source:Journal of Hydrology
Page Range:1 - 14
Metadata Details
Metadata Creator:Roland Baatz
Metadata Created:2014-05-26
Metadata Last Updated:2014-05-26
Subproject:C6
Funding Phase:2
Metadata Language:English
Metadata Version:V40
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Page Visits:399
Metadata Downloads:0
Dataset Downloads:8
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