[1] The fundamental measurement of the Tropospheric Emission Spectrometer (TES) on board the Aura spacecraft is upwelling infrared spectral radiances. Accurate TES retrievals of surface and atmospheric parameters such as trace gas amounts critically depend on well-calibrated radiance spectra. On-orbit TES nadir observations were evaluated using carefully selected, nearly coincident spectral rad...

The character of data required to measure decade-to-century–scale climatic change is distinctly different from that required for weather prediction or for studies of meteorological processes. The data ought to possess the accuracy to detect the small secular climate changes of interest. To be useful to future investigators, the data must include convincing proof that a given level of accuracy w...

We present a new method for estimating the radiance function of lit automotive tail lamps. The method is based on Jensen’s photon mapping algorithm. In order to capture high angular frequencies in the radiance function, we incorporate the angular domain into the density estimation. However, density estimation in position-direction space makes it necessary to find a tradeoff between the spatial ...

We apply the 2D wavelet transform modulus maxima (WTMM) method to highresolution LANDSAT satellite images of cloudy scenes. The computation of the and multifractal spectra of the radiance fields confirms the relevance of the multifractal description to account for the intermittent nature of marine stratocumulus clouds. This analysis reveals that with the available set of experimental data, ther...

This study introduces new CERES Angular Distribution Models (ADMs) for estimating shortwave, longwave and window top-of-atmosphere radiative fluxes from broadband radiance measurements. By combining CERES measurements with narrowband, high-resolution imager measurements, up to a factor 4 improvement in TOA flux accuracy is achieved compared to TOA flux estimates from previous experiments, such ...

A plenoptic camera captures the 4D radiance about a scene. Recent practical solutions mount a microlens array on top of a commodity SLR to directly acquire these rays. However, they suffer from low resolution as hundreds of thousands of views need to be captured in a single shot. In this paper, we develop a simple but effective technique for improving the image resolution of the plenoptic camer...

We present a general technique that allows for appling the instant global illumination (IGI) technique to scenes with glossy BRDFs and high-frequency geometric features like bump and normal maps. Like IGI, we use n×m interleaved sampling patterns to reduce the lighting computations by a factor of n×m, and filter incoming illumination in screen space. Unlike IGI, we filter (per-pixel) the incomi...

A ncw approach to on-orbit satellite sensor calibration has becJl developed using the flight of a high altitude calibrated airborne imaging spectrometer below a multi-spectral satellite sensor. This strategy was in~plcrncnted on the 27th of August 1992 for the Optical Sensor (OPS) on board the Japanese Earth Rcsourccs Satellite-1 (JERS1 ) using NASA’s Airborne Visible-Infrared lmag,ing Spectrom...

The Climate Absolute Radiance and Refractivity Observatory will be a climate benchmarking mission intended to include instruments for measuring Earth’s atmospheric refractivity by GNSS radio occultation (RO), high spectral resolution thermal infrared spectra emitted from the Earth, and the spectrally resolved reflected shortwave spectrum. Climate benchmarking is necessary to establish a record ...

Sirius was spotted with the naked eye at broad daylight by looking along the finder of a 1 m telescope on La Palma Observatory at a 2370 m height. Sun elevation was 73°; Sirius was nearly straight under the Sun at 37° elevation. The sky radiance, although not recorded directly, could be determined from the simultaneously obtained high-precision wavelength-dependent sky polarization data near Si...