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Application of Remote Sensing Technique to Enhance the Water Quality Model Validation in a Large Water Body  

Lim, Hyun-Ju (Department of Environmental Science and Engineering, Ewha Womans University)
Choi, Jung-Hyun (Department of Environmental Science and Engineering, Ewha Womans University)
Park, Seok-Soon (Department of Environmental Science and Engineering, Ewha Womans University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.28, no.4, 2006 , pp. 447-452 More about this Journal
Abstract
The remote sensing technique was applied to enhance the water qualify model validation in a large water body. Since the satellite image usually covers the wide surface area of a large water body, it can compensate for the lark of measured data points required for model calibration and verification. This paper describes the analysis of Landsat FTM+images collected on April 29th and September 4th in year 2000 to evaluate surface water temperature of Lake Paldang. The water temperature data obtained from the satellite image were compared with model results by estimating three different methods of error criteria. The residual ratios on April 29th and September 4th were 0.13 and 0.04 respectively. This showed that the model result accords with the data obtained from the process of satellite image. Without considering atmospheric interference, however, transformation process of satellite image causes relatively large residual ratio in the surface water temperature distribution pattern on April 29th. In the future study, therefore, the atmospheric properties of image acquisition point needs to be considered for the application of radiance transformation model.
Keywords
Model Validation; Sensing Remote; Surface Water Temperature;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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