Influence of climate variation on seasonal precipitation in the Colorado River Basin |
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| Authors: | Tae-Woong Kim Chulsang Yoo Jae-Hyun Ahn |
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| Institution: | (1) Department of Civil and Environmental System Engineering, Hanyang University, Gyeonggi-do, 426-791, South Korea;(2) Department of Civil and Environmental Engineering, Korea University, Seoul, 136-701, South Korea;(3) Department of Civil Engineering, Seokyeong University, Seoul, 136-704, South Korea |
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| Abstract: | This study analyzed the influence of large-scale climate pattern on precipitation in the Colorado River Basin. Large-scale
climatic oscillations, like ENSO, PDO, NAO, and the global warming trend are associated with regional hydrologic variation.
Ten types of climate indices were gathered and analyzed to investigate their influence on seasonal precipitation variation
in the basin based on a linear correlation analysis and an influence index analysis. The influence index was developed in
this study to measure the effect of climate variation on the seasonal precipitation in the basin. The statistical evidence
achieved in this study confirms that the Colorado River Basin is subjected to the phase of climate variation. The strength
of the seasonal response of precipitation to the climate variation varies in different localities in the basin. The methods
of analysis used in this study were proposed in the hope that progress in understanding and modeling dynamic climatic systems
can result in developing a valuable long-term forecasting model for water resources management. |
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