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http://dx.doi.org/10.7780/kjrs.2008.24.6.605

An Improved Validation Technique for the Temporal Discrepancy when Estimated Solar Surface Insolation Compare with Ground-based Pyranometer: MTSAT-1R Data use  

Yeom, Jong-Min (Dept. of Atmospheric Science, Pukyong National University)
Han, Kyung-Soo (Dept. of Satellite Information Science, Pukyong National University)
Lee, Chang-Suk (Dept. of Satellite Information Science, Pukyong National University)
Kim, Do-Yong (Center for Atmospheric Sciences and Earthquake Research, the Korea Meteorological Administration)
Publication Information
Korean Journal of Remote Sensing / v.24, no.6, 2008 , pp. 605-612 More about this Journal
Abstract
In this study, we estimate solar surface insolation (SSI) by using physical methods with MTSAT-1R data. SSI is regarded as crucial parameter when interpreting solar-earth energy system, climate change, and agricultural production predict application. Most of SSI estimation model mainly uses ground based-measurement such as pyranometer to tune the constructed model and to validate retrieved SSI data from optical channels. When compared estimated SSI with pyranometer measurements, there are some systemic differences between those instruments. The pyranometer data observed upward-looking hemispherical solid angle and distributed hourly measurements data which are averaged every 2 minute instantaneous observation. Whereas MTSAT-1R channels data are taken instantaneously images at fixed measurement time over scan area, and are pixel-based observation with a much smaller solid angle view. Those temporal discrepancies result from systemic differences can induce validation error. In this study, we adjust hour when estimate SSI to improve the retrieved accurate SSI.
Keywords
Solar Surface Insolation (SSI); pyranometer; temporal discrepancy; MTSAT-1R;
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Times Cited By KSCI : 1  (Citation Analysis)
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