Future Perspectives of Drought Management Incorporating Interconnection of Climate Change and Extreme Drought |
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학술지명 AOGS2015
저자 황만하,Muhamm,Taekim
발표일 2015-08-04
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Drought is a recurrent multidimensional climatic phenomenon that is instigated by intense and persistent shortage of precipitation. To determine the onset and the end of drought, scientists and policymakers often disagree on the basis for declaring an end to drought since there is no universally accepted definition of the phenomenon. It has slow unnoticed onset, develops cumulatively, immediately not observable and hence hampers lives and properties seriously. A worldwide concerned has grown in recent years that droughts may be increasing in frequency, severity, and duration given varying climatic conditions and predictable increases in extreme climate events. Studies revealed that climate change could significantly affect the sustainability of water supply in coming decades to exacerbate droughts. The future drought exacerbation has been connected with weather variability, climate change and over exploitation of water resources. Among the natural hazards, droughts possess certain unique features; in addition to delayed effects, droughts vary by multiple dynamic dimensions including severity and duration, which causing a pervasive and subjective network of long lasting impacts that can filter through economies and the environment for months, years and even decades makes them difficult to characterize. In order to manage droughts, it is essential to perform both retrospective analyses (e.g., severity versus impacts analysis) and prospective planning (e.g., risk assessment). For effective drought management to ensure sustainable water resources and to face drought risk successfully, shifting from a reactive (emergency management and drought relief) to a proactive and comprehensive approach (prediction, preparedness and mitigation) is necessary. This study analyzing the climate impacts and its association with drought based on scientific grounds. In addition, it argues the fundamental concepts of drought, the governing principles and objectives of an effective drought |