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Çѱ¹¼öÀÚ¿øÇÐȸ / v.40, no.4, 2007³â, pp.299-311
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( Seasonal Relationship between El Nino-Southern Oscillation and Hydrologic Variables in Korea ) |
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Climatic abnormal phenomena involving El Nino and La Nina have been frequently reported in recent decades. The interannual climate variability represented by El Nino-Southern Oscillation (ENSO) is sometimes investigated to account for the climatic abnormal phenomena around the world. Although many hydroclimatologists have studied the impact of ENSO on regional precipitation and streamflow, however, there are still many difficulties in finding the dominant causal relationship between them. This relationship is very useful in making hydrological forecasting models for water resources management. In this study, the seasonal relationships between ENSO and hydrologic variables were investigated in Korea. As an ENSO indicator, Southern Oscillation Index (SOI) was used. Monthly precipitation, monthly mean temperature, and monthly dam inflow data were used after being transformed to the standardized normal index. Seasonal relationships between ENSO and hydrologic variables were investigated based on the exceedance probability and distribution of hydrologic variables conditioned on the ENSO episode. The results from the analysis of this study showed that the warm ENSO episode affects increases in precipitation and temperature, and the cold ENSO episode is related with decreases in precipitation and temperature in Korea. However, in some regions, the local relationships do not correspond with the general seasonal relationship. |
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Ű¿öµå |
¿¤´Ï´¢-³²¹æÁøµ¿;°èÀýÀû °ü°è;¼ö¹®º¯·®;Ç¥ÁØÈµÈ Á¤±ÔÁö¼ö;El Nino-Southern Oscillation;Seasonal relationship;Hydrologic variables;Standardized normal index; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.40, no.4, 2007³â, pp.299-311
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200727543088091)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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