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http://dx.doi.org/10.11108/kagis.2013.16.3.147

Comparison of Precipitation Distributions in Precipitation Data Sets Representing 1km Spatial Resolution over South Korea Produced by PRISM, IDW, and Cokriging  

Park, Jong-Chul (Geographic Information Science Research Institute, Kongju National University)
Kim, Man-Kyu (Department of Geography, Kongju National University)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.16, no.3, 2013 , pp. 147-163 More about this Journal
Abstract
The purpose of this study is to compare precipitation distributions in precipitation data sets over South Korea produced by three interpolation methods. The differences of precipitation caused by interpolation methods is an important information when the interpolated precipitation data sets were used in researches such as ecological and hydrological modeling as well as regional climate impact studies. In this study, the precipitation data sets were produced by IDW(Inverse Distance Weighting) and Cokriging in this study and the PRISM(Precipitation-elevation Regressions on Independent Slopes Model) data set obtained from Climate Change Information Center of Korea. The spatial resolution of the precipitation data is 1km. As a result, there was a great precipitation difference caused by interpolation methods in data of mountainous watersheds in general. Especially the difference of monthly precipitation was 10~20% or more in the mountainous watersheds near the Military Demarcation Line dividing North and South Korea, Mt. Sobaik, Mt. Worak, Mt. Deogyu, Mt. Jiri and Taeback Mountain Range. It means that a final result of a research can be affected by adopted interpolation method when an interpolated precipitation data set is used in the research for the these study sites.
Keywords
Interpolation; Precipitation; South Korea; PRISM; Cokriging; IDW;
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Times Cited By KSCI : 11  (Citation Analysis)
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