Engineering topics
Publications and source records attributed to Marlatt, W. E..
The author has identified the following significant results. The potential benefit of improved dissemination of weather information to the Mississippi cotton farmer was estimated at $36,000 per 1000 acres. This is 16% of production cost of cotton in 1976. On a statewide basis, the total potential savings exceeds 100 million dollars.
The author has identified the following significant results. Comparison of several existing infrared radiative transfer models under somewhat controlled conditions and with atmospheric observations of Skylab's S191 and S192 radiometers illustrated that the models tend to over-compute atmospheric attenuation in the window region of the atmospheric infrared spectra.
The Skylab field phase in June, August and September of 1973 for the Skylab concentrated atmospheric radiation project provided an opportunity to conduct infrared and solar observations and subsequent calculations beneath the orbiting space vehicle during EREP overpasses. Infrared and solar transmission and absorption properties observed within the atmosphere were compared with EREP experiments, notably the S-191 and S-192. These same observations were later employed in the development and comparison of various atmospheric infrared and solar radiative transfer approximations. Solar radiation observations and calculations in the scattering atmosphere included the 0.4 to 1.1 microns spectral range while infrared observations and calculations covered the spectral band and portions thereof within the 5.0 to 40.0 microns region. Principal conclusions drawn from the solar radiation research and the infrared radiation research are discussed.
An overview is presented of the Skylab Concentrated Atmospheric Radiation Project (SCARP), which was conducted to determine the accuracy and applicability of different models of radiation transfer through air masses of differing characteristics including varying amounts of wet and dry aerosols. Sites surveyed included onshore and offshore areas in the vicinity of Houston, Texas, the White Sands Missile Range in New Mexico, and Phoenix, Arizona, which provided a variety of warm, hot, dry, wet, clean, and dirty atmospheres. A typical exercise is described, and problems encountered during the experiment are discussed. It is noted that ten models of atmospheric scattering were utilized and that available data is being compared with the models.
Airborne measurement of directional variation in reflected solar radiation over soil surface and vegetation, using scanning radiometer
A radiation transfer model was modified to include semitransparent and opaque layers as well as molecular constituents. An example of the use of the program and an analysis of the mathematical model are included.
Support documentation for NASA Convair 990 meteorological flight number 3
Anisotropic solar reflectance over white sand, snow and stratus clouds using Nimbus F-3 radiometer and silicon cell pyranometer on Piper Twin Comanche
Temperature measurements of grassland, desert and water surfaces using IR radiometer found to compare favorably with miniature thermistors
Temperature and spectral emissivity characteristics of cloud tops and surface of earth
Measurement of earth surface temperature by thermistors and airborne radiometers