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http://dx.doi.org/10.3741/JKWRA.2017.50.12.863

A study on PDSI improvement for drought monitoring: focused on the estimation method of potential evapotranspiration  

Moon, Jang Won (Korea Institute of Civil Engineering and Building Technology)
Kang, Jae Won (SURI Engineering & Consulting Co., Ltd.)
Cho, Young Hyun (Hydrometeorological Cooperation Center, Korea Water Resources Corporation)
Publication Information
Journal of Korea Water Resources Association / v.50, no.12, 2017 , pp. 863-875 More about this Journal
Abstract
In this study, the effects of potential evapotranspiration method on drought index results were evaluated using SC-PDSI. Monthly heat index method, Penman-Monteith method, and Hargreaves equation were used as potential evapotranspiration method. SC-PDSI was calculated using three potential evapotranspiration method at 56 stations and compared the results. As a result, it was confirmed that the results by Penman-Monteith method and Hargreaves equation showed similar SC-PDSI calculation results without much difference, and the result by monthly heat index method showed a relatively large difference. It was confirmed that the results of SC-PDSI and drought situation judgment for the period of spring and winter season showed a big difference by the month. In conclusion, when calculating PDSI in Korea, using Penman-Monteith method and Hargreaves equation will be able to express the drought situation well.
Keywords
SC-PDSI; Penman-Monteith method; Hargreaves equation; Monthly heat index method; Drought index;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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