T h r e e methods for converting Airborne Visible/Infrared Imaging Spectrometer (A VIRIS) radiance data to apparent surface reflectance were compared using data collected over the Lunar Crater Volcanic Field in Nevada and the Pavant Butte tuff cone in Utah. The methods examined were the empirical line method, radiative transfer modeling (using LOWTRAN 7), and spectral mixture analysis using ref...

Several ways of improving the realism of the results of traditional ray tracing are presented. The essential physical quantities of spectral radiant power and spectral radiance and their use in lighting calculations are discussed. Global illumination terms are derived by employing illumination ray tracing for calculation of quickly changing indirect lighting components, and ra-diosity ray traci...

Several ways of improving the realism of the results of traditional ray tracing are presented. The essential physical quantities of spectral radiant power and spectral radiance and their use in lighting calculations are discussed. Global illwnination terms are derived by employing illwnination ray tracing for calculation of quickly changing indirect lighting components, and radiosity ray tracin...

Correcting for atmospheric e ects is an essential part of surface-re ectance recovery from radiance measurements. Model-based atmospheric correction techniques improve the accuracy of the identi cation and classi cation of terrestrial re ectances from multi-spectral imagery. Successful and e cient removal of atmospheric e ects from remote-sensing data is a key factor in the success of Earth obs...

The Ozone Mapping and Profiler Suite Limb Profiler (OMPS/LP) ozone product requires the determination of cloud height for each event to establish the lower boundary of the profile for the retrieval algorithm. We have created a revised cloud detection algorithm for LP measurements that uses the spectral dependence of the vertical gradient in radiance between two wavelengths in the visible and ne...

Radiative forcing from anthropogenic ozone in the troposphere is an important factor in climate change, with an average value of 0.35 W m according to the Intergovernmental Panel for Climate Change (IPCC). IPCC model results range from 0.25 to 0.65 W m, owing to uncertainties in the estimates of pre-industrial concentrations of tropospheric ozone, and in the present spatial and temporal distrib...

Temperature–Emissivity Separation (TES) in the Thermal InfraRed (TIR) domain is an illposed problem, in which the number of measurements (the measured spectral radiances) is less than the number of the parameters to be determined (the values of emissivity in each channel plus the temperature). In this paper we present a new method for deriving these parameters from TIR radiance spectra. The pre...

[1] The impact of smoke aerosols generated from biomass burning activities in Southeast Asia on the total (i.e., direct and indirect effects) reflected solar and emitted thermal radiation from clouds was investigated using satellite data. We combine narrowband radiance measurements, from ultraviolet to near-infrared wavelengths (e.g., SeaWiFS and TOMS), with broadband irradiance measurements (e...

Three southern USA forestry species, loblolly pine (Pinus taeda), Virginia pine (Pinus virginiana), and shortleaf pine (Pinus echinata), were previously shown to be spectrally separable (83% accuracy) using data from a full-range spectroradiometer (400–2500 nm) acquired above tree canopies. This study focused on whether these same species are also separable using hyperspectral data acquired usi...