摘要:
A method of providing a one layer solar radiation model for calculation of insolation includes: calculating direct solar radiation at a selected position, based on extraterrestrial radiation, eccentricity of the earth from the sun, and transmittance of gases in the atmosphere; calculating final diffuse solar radiation at the selected position, by using diffuse solar radiation due to air molecules, diffuse solar radiation due to aerosol, and multi-diffuse solar radiation with the atmosphere and the surface of the earth; accumulating the calculated direct solar radiation and final diffuse solar radiation for a predetermined wavelength region; calculating the direct solar radiation reaching the surface of the earth and the final diffuse solar radiation reaching the surface of the earth by applying the amount of cloud; and calculating global solar radiation at the selected positions.
摘要:
Provided are a method and an apparatus of forming a solar radiation model applying topographical effects, the method comprising: calculating a slope angle and a slope aspect of a selected point on a digital elevation model data; calculating a final direct solar radiation of the selected point; calculating a final diffuse solar radiation of the selected point using the slope angle of the selected point, a sky-view factor of the selected point, and a diffuse solar radiation on the horizontal surface of the selected point; and calculating a global solar radiation using the final direct solar radiation and the final diffuse solar radiation.
摘要:
Provided is a disdrometer system having a three-dimensional laser array unit, including: a plurality of laser transmitting parts which are arranged on an inner side of a cylindrical body to generate a laser beam; a plurality of laser receiving parts which are arranged on the inner side of the cylindrical body to correspond to the laser transmitting parts; and a laser control part which converts a cut-off signal of the laser beam, which is cut-off by precipitation drops flowing into the inner side of the cylindrical body, into an electrical signal, and records the converted electrical signal. Thus, the disdrometer system has an effect that the shape, volume, number, falling velocity of precipitation drops, and the intensity, density and weight of rainfall can be integrally measured.