摘要: This report presents daytime atmospheric optical data collected chiefly with airborne instruments during a field expedition to northern Europe in the fall of 1976. Results from 12 flights are presented. The data include the natura... 展开 This report presents daytime atmospheric optical data collected chiefly with airborne instruments during a field expedition to northern Europe in the fall of 1976. Results from 12 flights are presented. The data include the natural irradiance upon horizontal plane surfaces, total volume scattering coefficients, atmospheric beam transmittances. Data for daytime conditions ranging from scattered clouds to completely overcast are presented. Data were measured in four spectral regions, as follows: Three narrow band optical filters with mean wavelengths of 478, 664, and 765 nanometers; and one broad band sensitivity representing a pseudo-photopic response with a mean wavelength of 557 nanometers. Selected meteorological properties, measured concurrently with the radiometric data are also included. (Author) 收起