GLUE based marine X-band weather radar data calibration and uncertainty estimation

Nielsen, Jesper Ellerbæk and Beven, Keith John and Thorndahl, Søren and Rasmussen, Michael R. (2015) GLUE based marine X-band weather radar data calibration and uncertainty estimation. Urban Water Journal, 12 (4). pp. 283-294. ISSN 1573-062X

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Abstract

The Generalized Likelihood Uncertainty Estimation methodology (GLUE) is investigated for radar rainfall calibration and uncertainty assessment. The method is used to calibrate radar data collected by a Local Area Weather Radar (LAWR). In contrast to other LAWR data calibrations, the method combines calibration with uncertainty estimation. Instead of searching for a single set of calibration parameters, the method uses the observations to construct distributions of the calibration parameters. These parameter sets provide valuable knowledge of parameter sensitivity and the uncertainty. Two approaches are analyzed; the static calibration approach, where the LAWR is calibrated once for a long period and the dynamic approach, where the estimate is continuously adjusted based on ground observations. The analysis illustrates that the static calibration performs insufficiently, whereas the dynamic adjustment improves the performance significantly. It is found that even if the dynamic adjustment method is used the uncertainty of rainfall estimates can still be significant.

Item Type:
Journal Article
Journal or Publication Title:
Urban Water Journal
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3300/3305
Subjects:
ID Code:
81114
Deposited By:
Deposited On:
15 Sep 2016 15:50
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 09:54