Wataru HIROSE
A study on the spatial distribution of the solar radiation characteristic using MODIS data
Atsushi RIKIMARU, Kazuyoshi TAKAHASHI
There is global irradiance distribution map to evaluate the spatial distribution of the sunshine condition. The map is widely hoped for also by electric power generation, the weather, and agricultural parties concerned, etc. There is a technology that uses a visible image of stationary satellite Geostationary Meteorological Satellite (GMS) as a method of making the map. It is a technology that estimates the quantity of solar radiation from the relation between the GMS image and altitude of the solar radiation by ground observation on 1.25km scale.
There is NASA”Ēs Aqua satellite as a visible-light observation image which is higher ground resolution than that and multi frequency observes recently. In the MODIS sensor installed in Aqua, the highest ground resolution is 250m. Therefore, the characteristic distribution of the sunshine can be expected by more small scale compared with the case to use GMS.
Then, it paid attention to the hours of sunlight time distribution as a sunshiny characteristic, the spatial distribution of hours of sunlight estimated from the relation between the MODIS visible image and Automated Meteorological Data Acquisition System(AMeDAS) hours of sunlight, the characteristic distribution of the sunshiny was evaluated in the present study.
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