Abstract: The regions between crop rows are modeled as infinitely long diffuse cavities. Geometrical view factors are calculated, accounting for reflected radiation emanating internal to the cavity and from the background sky. A ...

Abstract: A general method of accounting for emissivity in making temperature determinations of greybody surfaces from radiometric data is presented. The method differs from previous treatments in that a simple blackbody calibration ...

Abstract: Surface temperature patterns of drained organic soil farmland in the Everglades Agricultural Area south of Lake Okeechobee, Florida, were studied using GOES-1 satellite infrared digital data for the winters of 1976?77 and ...

Abstract: We report on experimental and analytical techniques for extending the useful range of sunphotometry and spectral radiometry to ultraviolet wavelengths < 360 nm. These entail modifications of the Bouguer-Langley method which ...

Abstract: Thermal images from an aircraft-mounted scanner are used to evaluate the effectiveness of crop-freeze protection devices. Data from flights made while using fuel oil heaters, a wind machine and an undercanopy irrigation ...