Improved High-Resolution Radar-Based Rainfall Estimation
Publication: Journal of Hydrologic Engineering
Volume 13, Issue 9
Abstract
This note investigates different procedures to improve radar-based estimates of rainfall accumulation, using the City of Winnipeg, Canada, as an example. Specific contributions include the implementation assessment of an advection scheme to track the movement of storms, a scheme to account for wind-induced drift, and an attenuation correction scheme that includes a simple hail identification method. It was found that a combination of these schemes improved the correlation between gauge radar accumulations from 0.48 to 0.86 for six rainfall events that occurred in the summer of 2000 in Winnipeg.
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Acknowledgments
The writers gratefully acknowledge the valuable comments provided by Dave Patrick and Dr. Norman Donaldson, Environment Canada, as well as Dr. Ken Snelgrove and Dr. John Hanesiak.
References
Anagnostou, E. N., and Krajewski, W. F. (1999a). “Real-time radar rainfall estimation. Part I: Algorithm formulation.” J. Atmos. Ocean. Technol., 16(2), 189–197.
Anagnostou, E. N., and Krajewski, W. F. (1999b). “Real-time radar rainfall estimation. Part II: Case study.” J. Atmos. Ocean. Technol., 16(2), 198–205.
Dinku, T., Anagnostou, E. N., and Borga, M. (2002). “Improving radar-based estimation of rainfall over complex terrain.” J. Appl. Meteorol., 41(12), 1163–1178.
Doviak, R. J., and Zrnic, D. S. (1993). Doppler radar and weather observations, 2nd Ed., Academic, San Diego, p. 304.
Fulton, R. A., Breidenbach, J. P., Seo, D. J., and Miller, D. A. (1998). “The WSR-88D rainfall algorithm.” Weather Forecast., 13(2), 377–394.
Gourley, J. J., and Vieux, B. E. (2005). “A method for evaluating the accuracy of quantitative precipitation estimates from a hydrologic modeling perspective.” J. Hydrometeor., 6(2), 115–133.
Hildebrand, P. H. (1978). “Iterative correction for attenuation of radar in rain.” J. Appl. Meteorol., 17(4), 508–514.
Rogers, R. R. (1964). “An extension of the Z-R relationship for the Doppler radar.” Proc., 11th Weather Radar Conference, American Meteorological Society, Boston, 170–174.
Wexler, R., and Atlas, D. (1963). “Radar reflectivity and attenuation of rain.” J. Appl. Meteorol., 2(2), 276–280.
Information & Authors
Information
Published In
Journal of Hydrologic Engineering
Volume 13 • Issue 9 • September 2008
Pages: 910 - 913
Copyright
© 2008 ASCE.
History
Received: Feb 12, 2007
Accepted: Oct 19, 2007
Published online: Sep 1, 2008
Published in print: Sep 2008
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