A Spatiotemporal Analysis of Historical Droughts in KoreaSource: Journal of Applied Meteorology and Climatology:;2011:;volume( 050 ):;issue: 009::page 1895DOI: 10.1175/2011JAMC2664.1Publisher: American Meteorological Society
Abstract: he climatological characteristics of drought in South Korea were investigated using daily precipitation data for 1777?2008. The effective drought index was used to quantify the drought intensity. As a result, five characteristics were discovered. First, South Korea can be divided into four drought subregions (the central, southern, and east coastal regions and Jeju Island) using hierarchical cluster analysis. Second, a map for long-term drought conditions in the four subregions is created that allows identification of the spatiotemporal distribution of droughts for the 231 yr at a glance. Third, droughts in South Korea have time scales that depend on the onset season. Spring (March?May) droughts tend to be short (≤200 days) because the summer (June?September) rainy season follows. Summer droughts tend to be long (>200 days) because the dry season (October?February) follows. In the dry season, droughts tend to be sustained or become severe rather than being initiated or relieved. Fourth, 5-, 14-, 34-, and 115-yr drought cycles were identified by spectral analysis. The 5-yr cycle was dominant in all of the regions, the 14-yr cycle was observed over the southern and east coastal regions, and the 34-yr cycle was observed over the central region. Fifth, the most extreme drought occurred in 1897?1903 (return period: 233 yr) and was associated with the 115-yr drought cycle. After this drought, severe droughts (return period of >10 yr) occurred in 1927?30, 1938?40, 1942?45, 1951?52, 1967?69, and 1994?96; they were caused by the consecutive shortage of summer rainfall for two or more years.
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contributor author | Kim, Do-Woo | |
contributor author | Byun, Hi-Ryong | |
contributor author | Choi, Ki-Seon | |
contributor author | Oh, Su-Bin | |
date accessioned | 2017-06-09T16:39:20Z | |
date available | 2017-06-09T16:39:20Z | |
date copyright | 2011/09/01 | |
date issued | 2011 | |
identifier issn | 1558-8424 | |
identifier other | ams-71661.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4213577 | |
description abstract | he climatological characteristics of drought in South Korea were investigated using daily precipitation data for 1777?2008. The effective drought index was used to quantify the drought intensity. As a result, five characteristics were discovered. First, South Korea can be divided into four drought subregions (the central, southern, and east coastal regions and Jeju Island) using hierarchical cluster analysis. Second, a map for long-term drought conditions in the four subregions is created that allows identification of the spatiotemporal distribution of droughts for the 231 yr at a glance. Third, droughts in South Korea have time scales that depend on the onset season. Spring (March?May) droughts tend to be short (≤200 days) because the summer (June?September) rainy season follows. Summer droughts tend to be long (>200 days) because the dry season (October?February) follows. In the dry season, droughts tend to be sustained or become severe rather than being initiated or relieved. Fourth, 5-, 14-, 34-, and 115-yr drought cycles were identified by spectral analysis. The 5-yr cycle was dominant in all of the regions, the 14-yr cycle was observed over the southern and east coastal regions, and the 34-yr cycle was observed over the central region. Fifth, the most extreme drought occurred in 1897?1903 (return period: 233 yr) and was associated with the 115-yr drought cycle. After this drought, severe droughts (return period of >10 yr) occurred in 1927?30, 1938?40, 1942?45, 1951?52, 1967?69, and 1994?96; they were caused by the consecutive shortage of summer rainfall for two or more years. | |
publisher | American Meteorological Society | |
title | A Spatiotemporal Analysis of Historical Droughts in Korea | |
type | Journal Paper | |
journal volume | 50 | |
journal issue | 9 | |
journal title | Journal of Applied Meteorology and Climatology | |
identifier doi | 10.1175/2011JAMC2664.1 | |
journal fristpage | 1895 | |
journal lastpage | 1912 | |
tree | Journal of Applied Meteorology and Climatology:;2011:;volume( 050 ):;issue: 009 | |
contenttype | Fulltext |