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Analysis for Air Temperature Trend and Elasticity of Air-water Temperature according to Climate Changes in Nakdong River Basin  

Shon, Tae Seok (School of Civil & Environmental Engineering, Pusan National University)
Lim, Yong Gyun (Ulsan Metropolitan Government)
Baek, Meung Ki (Busan Metropolitan Government)
Shin, Hyun Suk (School of Civil & Environmental Engineering, Pusan National University)
Publication Information
Journal of Korean Society on Water Environment / v.26, no.5, 2010 , pp. 822-833 More about this Journal
Abstract
Temperature increase due to climate changes causes change of water temperature in rivers which results in change of water quality etc. and the change of river ecosystem has a great impact on human life. Analyzing the impact of current climate changes on air and water temperature is an important thing in adapting to the climate changes. This study examined the effect of climate changes through analyzing air temperature trend for Nakdong river basin and analyzed the elasticity of air-water temperature to understand the effect of climate changes on water temperature. For analysis air temperature trend, collecting air temperature data from the National Weather Service on main points in Nakdong river basin, and resampling them at the units of year, season and month, used as data for air temperature trend analysis. Analyzing for elasticity of air-water temperature, the data were collected by the Water Environment Information system for water temperature, while air temperature data were collected at the National Weather Service point nearest in the water temperature point. And using the results of trend analysis and elasticity analysis, the effect of climate changes on water temperature was examined estimating future water temperature in 20 years and 50 years after. It is judged that analysis on mutual impact between factors such as heat budget, precipitation and evapotranspiration on river water temperature affected by climate changes and river water temperature is necessary.
Keywords
Air temperature; Climate changes; Elasticity; Trend; Water temperature;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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