Identifying the role of typhoons as drought busters in South Korea based on hidden Markov chain models
- Title
- Identifying the role of typhoons as drought busters in South Korea based on hidden Markov chain models
- Author
- 김태웅
- Keywords
- HMM; typhoon; drought; drought buster
- Issue Date
- 2015-04
- Publisher
- American Geophysical Union
- Citation
- Geophysical Research Letters, v. 42, NO. 8, Page. 2797-2804
- Abstract
- This study proposed a hidden Markov chain model-based drought analysis (HMM-DA) tool to understand the beginning and ending of meteorological drought and to further characterize typhoon-induced drought busters (TDB) by exploring spatiotemporal drought patterns in South Korea. It was found that typhoons have played a dominant role in ending drought events (EDE) during the typhoon season (July-September) over the last four decades (1974-2013). The percentage of EDEs terminated by TDBs was about 43-90% mainly along coastal regions in South Korea. Furthermore, the TDBs, mainly during summer, have a positive role in managing extreme droughts during the subsequent autumn and spring seasons. The HMM-DA models the temporal dependencies between drought states using Markov chain, consequently capturing the dependencies between droughts and typhoons well, thus, enabling a better performance in modeling spatiotemporal drought attributes compared to traditional methods.
- URI
- https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2015GL063753https://repository.hanyang.ac.kr/handle/20.500.11754/178915
- ISSN
- 0094-8276;1944-8007
- DOI
- 10.1002/2015GL063753
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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