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001     203163
005     20210129220311.0
024 7 _ |2 doi
|a 10.1002/2014WR016443
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|a 0043-1397
024 7 _ |2 ISSN
|a 0148-0227
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100 1 _ |0 P:(DE-Juel1)144513
|a Baatz, R.
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245 _ _ |a An empirical vegetation correction for soil water content quantification using cosmic ray probes
260 _ _ |a Washington, DC
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|c 2015
336 7 _ |a Journal Article
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520 _ _ |a Cosmic ray probes are an emerging technology to continuously monitor soil water content at a scale significant to land surface processes. However, the application of this method is hampered by its susceptibility to the presence of aboveground biomass. Here we present a simple empirical framework to account for moderation of fast neutrons by aboveground biomass in the calibration. The method extends the N0-calibration function and was developed using an extensive data set from a network of 10 cosmic ray probes located in the Rur catchment, Germany. The results suggest a 0.9% reduction in fast neutron intensity per 1 kg of dry aboveground biomass per m2 or per 2 kg of biomass water equivalent per m2. We successfully tested the novel vegetation correction using temporary cosmic ray probe measurements along a strong gradient in biomass due to deforestation, and using the COSMIC, and the hmf method as independent soil water content retrieval algorithms. The extended N0-calibration function was able to explain 95% of the overall variability in fast neutron intensity.
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|a Bogena, Heye
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|a Hendricks-Franssen, Harrie-Jan
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|a Huisman, J. A.
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|a Montzka, C.
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|a Vereecken, H.
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773 _ _ |0 PERI:(DE-600)2029553-4
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|g Vol. 51, no. 4, p. 2030 - 2046
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|t Water resources research
|v 51
|x 0043-1397
|y 2015
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