천리안 기상위성을 이용한 한반도 지역의 Linke turbidity 및 청천일사량 추정
Estimation of the Linke Turbidity Factor and the Solar Irradiance under a Clear Sky Over the Korean Peninsula Using COMS MI
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초록
An estimation of the clear sky irradiance is a crucial part of satellite based methods because it is employed to calculatethe clear sky index. Although the accuracy of the clear sky irradiance depends on the AOD (Aerosol Optical Depth) and TPW (TotalPrecipitable Water) mixing ratio, data are difficult to acquire in real time. The Linke turbidity factor simplifies the data as a uniqueparameter that describes the attenuation of solar radiation in terms of a clean and dry atmosphere. SoDa provides the Linke turbiditymaps all over the world, but those maps have low spatial and temporal resolutions. To estimate the clear sky irradiance over theKorean Peninsula using satellite images, this paper presents a method to estimate the Linke turbidity factor using COMS MI, which isoperated by the Korea Meteorological Administration, and the clear sky irradiance using the ESRA clear sky model. The AOD and theTPW derived from COMS MI were also used to calculate the Linke turbidity. Overall, the results show that the Linke turbidity factorcalculated from COMS MI has higher accuracy than that calculated using the SoDa data.
Abstract
An estimation of the clear sky irradiance is a crucial part of satellite based methods because it is employed to calculatethe clear sky index. Although the accuracy of the clear sky irradiance depends on the AOD (Aerosol Optical Depth) and TPW (TotalPrecipitable Water) mixing ratio, data are difficult to acquire in real time. The Linke turbidity factor simplifies the data as a uniqueparameter that describes the attenuation of solar radiation in terms of a clean and dry atmosphere. SoDa provides the Linke turbiditymaps all over the world, but those maps have low spatial and temporal resolutions. To estimate the clear sky irradiance over theKorean Peninsula using satellite images, this paper presents a method to estimate the Linke turbidity factor using COMS MI, which isoperated by the Korea Meteorological Administration, and the clear sky irradiance using the ESRA clear sky model. The AOD and theTPW derived from COMS MI were also used to calculate the Linke turbidity. Overall, the results show that the Linke turbidity factorcalculated from COMS MI has higher accuracy than that calculated using the SoDa data.
참고문헌 (18)
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