Engineering topics
Publications and source records attributed to Sekera, Z..
An analytic formula is derived which describes approximately the scattering of electromagnetic waves in a haze. This formula is compared, and found to agree well, with the exact results from Mie theory that are available in the literature. The formula is used to arrive at a simple, nonredundant, but complete parametrization of the aerosol model.
The inversion problem, I.E., determining the atmospheric turbidity from polarimetry of radiation emerging from the earth's atmosphere, is presented. A major theoretical advance was made by finding a successful approximation for the forward peak scattering of aerosols together with a simplified characterization of particle size distributions. An engineering model of a multibarreled photopolarimeter suitable for operation from a satellite was evaluated in laboratory and high altitude jet aircraft tests. Comparison of the data from flights over the Mexican desert with theoretical curves for a Rayleigh atmosphere with negligible turbidity is in agreement.
Atmospheric radiation polarization characteristics, determining concentration and distribution of atmospheric scatterers
Photoelectric skylight perimeter for Stokes parameter measurements in plane polarized light
Atmospheric radiation and optics, emphasizing the heat transfer calculation for use in atmospheric circulation models
Physical properties of moon & planets - planetary atmospheres, radiometry, reentry and orbit calculations