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    Comparison of three types of disdrometers under natural rainfall conditions (2019)

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    Comparison of three types of laser optical disdrometers under natural rainfall conditions.pdf (1.988Mb)
    Type of Content
    Journal Article
    UC Permalink
    https://hdl.handle.net/10092/103122
    
    Publisher's DOI/URI
    http://doi.org/10.1080/02626667.2019.1709641
    
    Publisher
    Informa UK Limited
    ISSN
    0262-6667
    2150-3435
    Language
    eng
    Collections
    • Engineering: Journal Articles [1630]
    Authors
    Johannsen L
    Balenovic N
    Strauss P
    Dosta T
    Neumann M
    Zumr D
    Klik A
    Cochrane, Thomas cc
    show all
    Abstract

    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.

    Citation
    Johannsen 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.
    This citation is automatically generated and may be unreliable. Use as a guide only.
    Keywords
    drop size distribution; optical disdrometer; rainfall erosivity; rainfall kinetic energy; soil erosion
    ANZSRC Fields of Research
    37 - 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.
    http://hdl.handle.net/10092/17651

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