名古屋地方における年間半天空昼光照度の数式表示  [in Japanese] FORMULATION OF DAYLIGHT ILLUMINANCE FROM HALF SKY IN NAGOYA DISTRICT  [in Japanese]

This paper is a continuation of the paper "Formulation of Outdoor Daylight Illuminance in Nagoya District Based on the Data Collected by the Measurement" that was published in the Transactions of AIJ in September 2005. This paper describes a study on formulating eight kinds of daylight illuminance from half sky. Many factors affect these kinds of illuminance. In this paper, direction of half sky, weather, and solar altitude are taken as three dominant factors that affect these kinds of illuminance. After all, this paper presents a series of equations that can evaluate these eight kinds of illuminance by taking the above-mentioned three factors into account.