Results 291 to 300 of about 6,949,089 (340)

Surface Roughness Effects on Soil Albedo

Soil Science Society of America Journal, 2000
Knowledge of how surface roughness influences the reflectance of sunlight from cultivated soils is useful in various applications, such as estimating albedo values used as inputs to soil temperature models and erosion models. The albedos of two soils were studied for dry and wet surfaces with four different roughness conditions, changed from a ...
A. D. Matthias, A. Fimbres, E. E. Sano, D. F. Post, L. Accioly, A. K. Batchily, L. G. Ferreira   +6 more
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REFLECTANCE AND ALBEDO, SURFACE

2003
‘Albedo’ is Latin, meaning whiteness. The albedo of a surface is the fraction of the incident sunlight that the surface reflects. Radiation that is not reflected is absorbed by the surface. The absorbed energy raises the surface temperature, evaporates water, melts and sublimates snow and ice, and energizes the turbulent heat exchange between the ...
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Diurnal asymmetry in surface albedo

Agricultural and Forest Meteorology, 1998
Observed surface albedos do not always exhibit the classical diurnal symmetry associated with the diurnal variation of zenith angle. Morning/afternoon albedo differences observed in even vegetated terrain are found to range on the daily average from 0.01 to 0.05 in magnitude in this study, and they have been found to be as high as 0.1 at a given solar ...
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Global land‐surface albedo modelling

International Journal of Climatology, 1993
AbstractThe climatic impact of changes in terrestrial albedo has been studied using numerous climate models, ranging from simple, one‐dimensional energy balance climate models to the most complex, three‐dimensional general circulation models of the atmosphere.
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Surface albedo and the Sahel drought

Nature, 1984
The persistence of the Sahel drought, which reached a peak in 1973, appears to be typical for such dry episodes over past decades and centuries1–3. Such strong persistence can be understood if a strong positive feedback mechanism is operating, partly driven by changes in surface properties4,5.
Courel, Marie-Françoise, Kandel, Robert, Rasool, S., I.   +2 more
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The surface Albedo distribution of Pluto

Icarus, 1989
Two distinct configurations have been established for the surface albedo distribution of Pluto on the basis of a model fitting absolute photometry data obtained over the 1954-1986 period. The two sets of model parameters primarily differ in the equatorial spots; these generate the rotational lightcurve, while the polar caps yield the orbital lightcurve.
Marc W. Buie, David J. Tholen
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Estimating surface albedo over Saudi Arabia

Renewable Energy, 2009
Abstract Using ten years of solar radiation data, the surface albedo of twenty-four sites in the Kingdom of Saudi Arabia was calculated, and annual, seasonal, and geographical variations were investigated. The selected sites encompass a wide range of atmospheric conditions.
A.H. Maghrabi, Z.A. Al-Mostafa
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Surface albedo data for climatic modeling

Reviews of Geophysics, 1983
The climate system is driven, primarily, by energy absorbed at the surface. Surface albedo sensitivity is incorporated into all types of climate models, and changes can lead to large feedback effects. For example, alterations in the extent and/or state of the cryosphere and large‐scale modification of vegetation cause significant perturbations in ...
A. Henderson‐Sellers, M. F. Wilson
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Determination of surface albedo from satellites

Advances in Space Research, 1985
Abstract The dynamical features of the climate system result from the interaction of the atmosphere with the surface. The hope for improving climate prediction, on seasonal and interannual time scales, is based on the premise that slowly varying boundary conditions force well defined predictable patterns of general circulation.
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Anthropogenic increase of winter surface albedo

CATENA, 1985
Summary The range of surface albedo in winter increased fourfold after densely forested swamps in Orange County, New York were turned into farmland, making the local microclimate considerably more sensitive to the presence and duration of snow cover.
D.A. Robinson, G.J. Kukla
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