Hyperspectral modeling for extracting aerosols from aircraft/satellite data

Sensitivity studies using the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) bands are currently under investigation. The objective of this research is to develop improved algorithms for the determination of aerosol type (e.g., presently described by S(sub 12). Preliminary computer calculations were made using LOWTRAN 7, which is the most advanced atmospheric code of the Air Force Geophysics Laboratory. LOWTRAN 7 permits the calculation of atmospheric transmission and absorption caused by aerosols and molecules along a non-homogeneous path for a variety of aerosol models. The calculations used the Navy Aerosol Model (NAM), which was constructed for the marine environment using a three component size distribution model. Calculations of the total transmittance (L(sub T)), the path radiance (L(sub P)), and the reflected radiance (L(sub r)) were made as a function of wavelength (lambda) from 0.4 to 2.4 microns for each of the 224 10 nm wide AVIRIS bands. These calculations were made for various types of atmospheres for the troposphere (0-2 km)

Turning Themselves In: Why Companies Disclose Regulatory Violations

As part of a recent trend toward more cooperative relations between regulators and industry, novel government programs are encouraging firms to monitor their own regulatory compliance and voluntarily report their own violations. In this study, we examine how enforcement activities, statutory protections, community pressure, and organizational characteristics influence organizations ’ decisions to self-police. We created a comprehensive dataset for the “Audit Policy”, a United States Environmental Protection Agency program that encourages companies to self-disclose violations of environmental laws and regulations in exchange for reduced sanctions. We find that facilities were more likely to self-disclose if they were recently inspected or subjected to an enforcement action, were narrowly targeted for heightened scrutiny by a US EPA initiative, and were larger and thus more prominent in their environment. While we find some evidence that state-level statutory immunity facilitates self-disclosure, we find no evidence that statutory audit privilege does so. The pitched political battles over regulation in the 1970s and 1980s, from deregulation to Reagan’s vow to get government “off the backs ” of industry, have given way in recent years to a ne