Browsing by Subject "Atmosphere"
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Item Studies of BRDF in conifer and deciduous boreal forests using the 4-scale model and airborne POLDER and ground-based PARABOLA measurements(AGU, 1997-08) Chen, J.M.; Leblanc, S.G.; Cihlar, J.C.; Bicheron, P.; Leroy, M.; Deering, D.; Eck, ThomasAn investigation of directional reflectance of boreal forests is conducted using airborne POLDER (1994) and ground-based PARABOLA measurements (1995) and the 4-Scale model (1997). The model simulates well the pronounced hotspots observed by POLDER and the slight bowl shape in the forward scattering direction observed by PARABOLA. The model is also used to demonstrate the importance of branch architecture in the directionality of NDVI calculated from the red and near infrared reflectance.Item The Sky is Coming(2020-01-01) Damico, Danielle; Rosskam, Jules; Visual Arts; Imaging and Digital ArtsThe Sky is Coming is a multisensory two-channel projection installation that depictsan ecosexual encounter between a developing thunderstorm and its human lover. This work ponders the technological mediation of our natural surroundings and the erotic forces at play in the efforts to erode anthropocentricity.Item Vertical Column Precipitable Water Determinations Over Terrestrial Surfaces From Avhrr Thermal Channels(IEEE, 1990-05-20) Eck, Thomas; Holben, B. N.Knowledge of the total vertical column water vapor (precipitable water) is important to meteorological analyses, as a dynamic component of the atmosphere, and for remote sensing investigations due to broad and narrow water vapor absorption bands in the Near-IR and thermal bands. Recent work using NOAA-9 daylight overpass AVHRR thermal band temperature differences (split window) over areas of known aerosol optical thickness and precipitable water in the African Sahel have shown a very high correlation (r²~. 9 between precipitable water and the split window temperature difference) for aerosol optical thicknesses less than 0.4 in the visible band. Using this relationship, an approach is described which can possibly be applied for operational retrieval of precipitable water for the Sahel.