Kober, Kirstin and Craig, George C. and Keil, Christian and Dörnbrack, Andreas (2012) Blending a probabilistic nowcasting method with a high-resolution numerical weather prediction ensemble for convective precipitation forecasts. Quarterly Journal of the Royal Meteorological Society, 138, pp. 755-768. Wiley. doi: 10.1002/qj.939. ISSN 0035-9009.
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/qj.939/pdf
Abstract
A seamless prediction of convective precipitation for a continuous range of lead times from 0�8 h requires the application of different approaches. Here, a nowcasting method and a high-resolution numerical weather prediction ensemble are combined to provide probabilistic precipitation forecasts. For the nowcast, an existing deterministic extrapolation technique was modified by the local Lagrangian method to calculate the probability of exceeding a threshold value in radar reflectivity. Numerical forecasts were obtained from an experimental high-resolution ensemble that provides 20 different deterministic forecasts of synthetic radar reflectivity. Probabilistic information was calculated by different approaches from the ensemble output. The probabilistic forecasts based on the ensemble were calibrated with the reliability diagram statistics method. The skill of the probabilistic nowcasts and forecasts was evaluated using three quality measures. Finally, a seamless probabilistic forecast was generated as an additive combination of nowcast and forecast, using a weighting function based on their relative skills. The skill of the seamless forecast was greater than or equal to that of the nowcast or ensemble forecast in all quality measures and at all lead times.
Item URL in elib: | https://elib.dlr.de/71593/ | |||||||||||||||
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Document Type: | Article | |||||||||||||||
Title: | Blending a probabilistic nowcasting method with a high-resolution numerical weather prediction ensemble for convective precipitation forecasts | |||||||||||||||
Authors: |
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Date: | 2012 | |||||||||||||||
Journal or Publication Title: | Quarterly Journal of the Royal Meteorological Society | |||||||||||||||
Refereed publication: | Yes | |||||||||||||||
Open Access: | Yes | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | Yes | |||||||||||||||
In ISI Web of Science: | Yes | |||||||||||||||
Volume: | 138 | |||||||||||||||
DOI: | 10.1002/qj.939 | |||||||||||||||
Page Range: | pp. 755-768 | |||||||||||||||
Publisher: | Wiley | |||||||||||||||
ISSN: | 0035-9009 | |||||||||||||||
Status: | Published | |||||||||||||||
Keywords: | short-range forecasting; blending; ensemble prediction; forecast calibration | |||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | |||||||||||||||
HGF - Program: | Space, Aeronautics | |||||||||||||||
HGF - Program Themes: | Earth Observation, ATM and Operation (old) | |||||||||||||||
DLR - Research area: | Raumfahrt, Aeronautics | |||||||||||||||
DLR - Program: | R EO - Earth Observation, L AO - Air Traffic Management and Operation | |||||||||||||||
DLR - Research theme (Project): | R - Atmospheric and climate research, L - Climate, Weather and Environment (old) | |||||||||||||||
Location: | Oberpfaffenhofen | |||||||||||||||
Institutes and Institutions: | Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology | |||||||||||||||
Deposited By: | Freund, Jana | |||||||||||||||
Deposited On: | 09 Nov 2011 16:25 | |||||||||||||||
Last Modified: | 31 Jul 2019 19:33 |
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