Development and Application of the Quasi-realtime Daylight Source Model based on Geostational Meteorological Satellite Images

基于静止气象卫星影像的准实时日光光源模型的开发与应用

基本信息

批准号：
12650605
负责人：
UETANI Yoshiaki
金额：
$ 1.86万
依托单位：
KYOTO UNIVERSITY (2001)Fukuyama University (2000)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

项目摘要

Both daylighting simulation tools and daylight availability data for various weather conditions are essential to design an architecture with energy efficiency and luminous environment of good quality. Though there are useful daylighting simulation tools being developed in the world, daylight source models are insufficient for the needs for both research and practice. Existing databases and numerical models on solar radiation and daylight availability are usually based on the measured data by surface observations at the limited number of meteorological observatories and daylighting measurement stations. Because of the financial difficulty to set up and operate such a station, the solar radiation and daylight availability data incline to the cities and countries where national meteorological observatories or major research institutes are located.As the alternative approaches of surface observations, the author proposed a statistical model for global and beam solar radiation using the ima … More ges of Japanese geostational meteorological satellite GMS-5. The model is based on the multiple linear regression analysis to estimate surface observed hourly cumulative global and beam radiation values from the satellite observed image values. The major difference of the model and the traditional satellite-derived models is that it utilizes the three channels of meteorological satellite images. The visual channel, the only one used in the traditional method, is converted to the albedo representing the optical thickness of cloud. The infrared channel corresponds to the height of cloud deck. The water vapor channel approximates the relative humidity of the troposphere. The combination of three channels has been expected to provide more detailed information on the atmosphere than ever.The purpose of the project is to develop the Quasi-realtime Daylight Source Model based on Geostational Meteorological Satellite Images. First, it examines the precision of a statistical model to estimate global and beam irradiance and illuminance at hourly intervals by the three channels of the geostational meteorological satellites images. The multiple liner regression analysis is performed between the satellites image values and instantaneous illuminance and irradiance measured at the Fukuyama University. By the weather condition analysis, causes reducing the precision are studied. The daylight source model is applied to estimate the geographical distribution of daylight availability. Less

对于各种天气条件的日光照明工具和日光可用性数据，对于设计具有能效和质量良好的发光环境的建筑至关重要。尽管世界上开发了有用的日光模拟工具，但日光源模型不足以满足研究和实践的需求。现有的有关太阳辐射和日光可用性的数据库和数值模型通常基于在有限数量的气象观测和日光照明测量站以表面观测来测量的数据。由于经济困难要建立和运营这样的站点，太阳辐射和日光可用性数据倾向于找到国家气象学观察或主要研究机构的城市和国家。作为表面观察的替代方法，作者提出了一种使用IMA的全球和光束辐射的统计学模型，使用IMA…更多的日本敌人级别级别的敌人的统计模型。该模型基于多个线性回归分析，以估算从卫星观察到的图像值的每小时累积全局和梁辐射值观察到的表面。该模型和传统卫星衍生模型的主要区别在于，它利用了气象卫星图像的三个通道。视觉通道是传统方法中唯一使用的通道，将其转换为代表云的光学厚度的反照率。红外通道对应于云甲板的高度。水蒸气通道近似对流层的相对湿度。预计三个通道的组合比以往任何时候都提供了有关气氛的更多详细信息。该项目的目的是基于地理气象卫星图像开发准真实的日光源模型。首先，它检查了静态模型的精度，以通过地球仪器气象卫星图像的三个通道以每小时的时间间隔估算全球和光束辐照度和照明。在福山大学测量的卫星图像值和瞬时照明和辐照度之间进行了多个衬里回归分析。通过天气条件分析，降低精度的原因是研究。日光源模型用于估计日光可用性的地理分布。较少的