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    An evaluation of NEXRAD precipitation estimates in complex terrain

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    Young_complex_terrain1999.pdf (1.512Mb)
    Issue Date
    1999-08-27
    Author
    Young, Bryan
    Nelson, Brian R.
    Bradley, A. Allen
    Smith, James A.
    Peters-Lidard, Christa D.
    Kruger, Anton
    Baeck, Mary Lynn
    Publisher
    American Geophysical Union
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    Next Generation Weather Radar (NEXRAD) precipitation estimates are used for hydrological, meteorological, and climatological studies at a wide range of spatial and temporal scales. The utility of radar-based precipitation estimates in such applications hinges on an understanding of the sources and magnitude of estimation error. This study examines precipitation estimation in the complex mountainous terrain of the northern Appalachian Mountains. Hourly digital precipitation (HDP) products for two WSR-88D radars in New York state are evaluated for a 2-year period. This analysis includes evaluation of range dependence and spatial distribution of estimates, radar intercomparisons for the overlap region, and radar-gage comparisons. The results indicate that there are unique challenges for radar-rainfall estimation in mountainous terrain. Beam blockage is a serious problem that is not corrected by existing NEXRAD algorithms. Underestimation and nondetection of precipitation are also significant concerns. Improved algorithms are needed for merging estimates from multiple radars with spatially variable biases.
    Description
    This is the published version. Copyright 1999 American Geophysical Union
    URI
    http://hdl.handle.net/1808/18999
    DOI
    https://doi.org/10.1029/1999JD900123
    Collections
    • Civil, Environmental & Architectural Engineering Scholarly Works [117]
    Citation
    Young, C. Bryan, Brian R. Nelson, A. Allen Bradley, James A. Smith, Christa D. Peters-Lidard, Anton Kruger, and Mary Lynn Baeck. "An Evaluation of NEXRAD Precipitation Estimates in Complex Terrain." J. Geophys. Res. Journal of Geophysical Research 104.D16 (1999): 19691. http://dx.doi.org/10.1029/1999JD900123

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    KU Libraries
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    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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