Comparison of three types of disdrometers under natural rainfall conditions (2019)
Type of ContentJournal Article
PublisherInforma UK Limited
Optical disdrometers can be used to estimate rainfall erosivity; however, the relative accuracy of different disdrometers is unclear. This study compared three types of optical laser-based disdrometers to quantify differences in measured rainfall characteristics and to develop correction factors for kinetic energy (KE). Two identical PWS100 (Campbell Scientific), one Laser Precipitation Monitor (Thies Clima) and a first-generation Parsivel (OTT) were collocated with a weighing rain gauge (OTT Pluvio2) at a site in Austria. All disdrometers underestimated total rainfall compared to the rain gauge with relative biases from 2% to 29%. Differences in drop size distribution and velocity resulted in different KE estimates. By applying a linear regression to the KE–intensity relationship of each disdrometer, a correction factor for KE between the disdrometers was developed. This factor ranged from 1.15 to 1.36 and allowed comparison of KE between different disdrometer types despite differences in measured drop size and velocity.
CitationJohannsen L, Balenovic N, Strauss P, Dosta T, Neumann M, Zumr D, Cochrane T, Klik A (2019). Comparison of three types of disdrometers under natural rainfall conditions. Hydrological Sciences Journal. 65(4). 524-535.
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Keywordsdrop size distribution; optical disdrometer; rainfall erosivity; rainfall kinetic energy; soil erosion
ANZSRC Fields of Research37 - Earth sciences::3707 - Hydrology::370704 - Surface water hydrology
37 - Earth sciences::3709 - Physical geography and environmental geoscience::370901 - Geomorphology and earth surface processes
40 - Engineering::4005 - Civil engineering::400502 - Civil geotechnical engineering
40 - Engineering::4011 - Environmental engineering::401199 - Environmental engineering not elsewhere classified
Rights© 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Zambon N; Lolk Johannsen L; Strauss P; Dostal T; Zumr D; Neumann M; Cochrane TA; Klik A (MDPI AG, 2020)The interaction between rainfall erosivity parameters and splash erosion is crucial for describing the soil erosion process; however, it is rarely investigated under natural rainfall conditions. In this study, we conducted ...
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Johannsen L; Strauss P; Neumann M; Zumr D; Cochrane T; Klik A; Zambon, Nives; Dostal, Tomas; Boschl, Gunter (Informa UK Limited, 2019)