Observing the May 2015 Record Rainfall at Norman, Oklahoma Using Various Methods

Observing the May 2015 Record Rainfall at Norman, Oklahoma Using Various Methods AbstractThe May 2015 record rainfall that occurred across Oklahoma was the result of a large number of high intensity rain events. A unique set of observations from gauges in the Oklahoma Mesonet, the NWS Cooperative Observer network, the CoCoRaHS network, an experimental pit gauge system, and NWS radar was available that covered an area in and around Norman, Oklahoma. This paper documents the performance of the various gauges throughout the course of the month. Key findings are: (1) observations from all methods significantly exceeded the 200 year return interval; (2) a weighing-bucket gauge at ground level recorded amounts up to 4.5% higher than a similarly located ground-level tipping-bucket gauge and up to 8.2% higher than a nearby aboveground tipping-bucket gauge; (3) a manual NWS Cooperative Observer gauge recorded nearly identical (within 1.2%) observations as compared to an automated tipping-bucket gauge at a co-located Mesonet station; and (4) observations from 26 CoCoRaHS gauges yielded an average rainfall within 1% of the aerially-averaged radar rainfall derived from the Multisensor Precipitation Estimator. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Hydrometeorology American Meteorological Society

Observing the May 2015 Record Rainfall at Norman, Oklahoma Using Various Methods

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Publisher
American Meteorological Society
Copyright
Copyright © American Meteorological Society
ISSN
1525-7541
D.O.I.
10.1175/JHM-D-17-0137.1
Publisher site
See Article on Publisher Site

Abstract

AbstractThe May 2015 record rainfall that occurred across Oklahoma was the result of a large number of high intensity rain events. A unique set of observations from gauges in the Oklahoma Mesonet, the NWS Cooperative Observer network, the CoCoRaHS network, an experimental pit gauge system, and NWS radar was available that covered an area in and around Norman, Oklahoma. This paper documents the performance of the various gauges throughout the course of the month. Key findings are: (1) observations from all methods significantly exceeded the 200 year return interval; (2) a weighing-bucket gauge at ground level recorded amounts up to 4.5% higher than a similarly located ground-level tipping-bucket gauge and up to 8.2% higher than a nearby aboveground tipping-bucket gauge; (3) a manual NWS Cooperative Observer gauge recorded nearly identical (within 1.2%) observations as compared to an automated tipping-bucket gauge at a co-located Mesonet station; and (4) observations from 26 CoCoRaHS gauges yielded an average rainfall within 1% of the aerially-averaged radar rainfall derived from the Multisensor Precipitation Estimator.

Journal

Journal of HydrometeorologyAmerican Meteorological Society

Published: Nov 2, 2017

References

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