Korean Journal of Remote Sensing (대한원격탐사학회지)

Korean Society of Remote Sensing (대한원격탐사학회)
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Method for Analysis on Optimization of Averaging Interval of Rainfall Rate Measured by Tipping-Bucket Rain Gauges

  • Nam, Kyung-Yeub (National Institute of Meteorological Research, Korea Meteorological Administration) ;
  • Chang, Ki-Ho (National Institute of Meteorological Research, Korea Meteorological Administration) ;
  • Kim, Kyung-Eak (Department of Astronomy and Atmospheric Sciences, Kyungpook National University) ;
  • Oh, Sung-Nam (National Institute of Meteorological Research, Korea Meteorological Administration) ;
  • Choi, Young-Jean (National Institute of Meteorological Research, Korea Meteorological Administration) ;
  • Kim, Kyung-Sik (Department of Physics, Pukyong National University) ;
  • Lee, Dong-In (Department of Environmental Atmospheric Sciences, Pukyong National University) ;
  • Kim, Kum-Lan (National Institute of Meteorological Research, Korea Meteorological Administration)
  • Published : 2008.02.28
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Abstract

Rainfall data from three different types of rain gauge system have been collected for the summertime rain event at Mokpo in the Korean peninsula. The rain gauge system considered in this paper is composed of three tipping-bucket rain gauges with 0.1, 0.2, and 0.5 mm measuring resolutions, the Optical Rain Gauge (ORG), and the PARSIVEL (PARticle SIze and VELocity). The PARSIVEL rainfall rate has been considered as the reference for comparison since it gave good resolution and performance on this event. Comparison with the PARSIVEL rainfall rate gives the results that the error and temporal variation of rainfall rate are simultaneously reduced with increasing the averaging interval of rainfall rate or decreasing the size of tipping bucket. This suggests that the estimated rainfall rate must be optimized, differently for the type of tipping-bucket rain gages, by minimizing the averaging interval of rainfall rate under the condition satisfying the given performance of rainfall rate.

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References

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