Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 157 for “"albedo"”.
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An albedo map and frost model of Pluto
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.
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Snow surface albedo variation in the St. Elias mountains
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1964.
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The replacement of reflectors by Albedo-type boundary conditions.
Thesis. 1976. Sc.D.--Massachusetts Institute of Technology. Dept. of Nuclear Engineering.
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Mapping exoplanet clouds and albedo from phase curves and spectra
This thesis uses planetary albedo models to investigate variations in visible wavelength phase curves of exoplanets. We improve upon existing exoplanet giant planet albedo models and incorporate exoplanet general circulation models to analyze the composition and occurrence of clouds on tidally …
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Variations in albedo among natural and disturbed South Western Cape veld types
Albedo is an important part of the radiation regime of any surface as it indicates the relative amount of solar radiation retained by the surface. Variations in albedo of the earth's land surface are broad. Bare, moist dark soils reflect as little as 9%, grasslands 26% and sandy deserts 37%. Man …
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A surface albedo map of Pluto based on photometry of mutual events
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1990.
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Development Of A Supercontinuum Based Photoacoustic Aerosol Light Absorption And Albedo Spectrometer (PALAAS)
… budget because they modify the planetary albedo with their optical properties. These optical properties need to be measured and understood, ideally at multiple wavelengths. This thesis describes the ongoing development of a supercontinuum based multi-wavelength photoacoustic instrument to …
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The albedo of an exoplanet: spacebased photometry of the transiting system HD 209458
… The fraction of light reflected from the planet (albedo) provides crucial insight into the chemical structure of atmospheres and global thermal properties of a planet, including heat dissipation and global weather patterns. Measuring the albedo of an exoplanet requires very precise photometry with …
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Analyzing variation in snow albedo across spatial scales of observation in the Alaskan boreal forest
Snow albedo plays a critical role in the Earth's energy balance due to its high reflectivity in the visible wavelengths. On average, more than 50% of the land area above 20° North latitude is snow covered by December. In a warming climate where temperatures are estimated to rise and less …
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United States Land Cover Land Use Change, Albedo and Radiative Forcing: Past and Potential Climate Implications
… affects Earth surface properties including albedo that impose a radiative forcing on the climate. Recent spatially explicit satellite derived contemporary LCLU, albedo, and projected LCLU data are used to study the impact of LCLU change from 1973 to 2000, and from 2000 to 2050, on albedo and …
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Towards a robust life cycle assessment tool for sustainable pavement designs : quantifying context-specific impacts of pavement albedo
… for quantifying the use phase impacts, such as albedo. High-albedo surfaces reflect more shortwave radiation, exerting "radiative forcing" (RF) on the earth. It also affects the ambient temperature and results in changes in building energy demand (BED). In the past, the impacts of pavement …
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Analysis of the single scatter albedo and imaginary index of refraction of fused silica nanospheres via a photoacoustic technique and a novel aerosol generator
… experiment sought to study the single scatter albedo (SSA) and imaginary index of refraction of 300nm fused silica spheres using the in-situ technique of photoacoustic spectroscopy. Through the use of a novel aerosol generator, sample aerosol streams were generated and sampled via a 4 …
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Surface reflectance characteristics of Langjökull, Iceland
… was then converted to surface broadband albedo using a number of different methods. The differences between the methods used to derive the surface albedo were then compared, followed by an analysis of the impact of spatial resolution and sample size on the differences between the derived …
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Impact of pavements on the urban heat island
… to be most strongly affected by its surface albedo, with only small variations caused by changing other layer properties such as density, thermal conductivity and heat capacity of the pavement layers. While RF is a measure of the overall environmental impact of a pavement, it fails to take …
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Development of a multispectral albedometer and deployment on an unmanned aircraft for evaluating satellite retrieved surface reflectance over Nevada's Black Rock Desert
… a compact and portable instrument to measure albedo toevaluate a major factor that influences the accuracy of AOD retrievals. The instrumentfunctions as a spectral albedometer using two Hamamatsu micro-spectrometers with aspectral range from 340-780 nm for measuring incident and reflected …
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Estimación de la temperatura del suelo, de la temperatura del aire y del albedo en las islas Livingston y Decepción (Antártida) a partir de datos MODIS y Landsat, y datos in situ
… para el monitoreo a escala global de la LST y el albedo. MODIS ofrece imágenes diarias cuya resolución espacial varía en dependencia del producto (500 m para el albedo y 1 km para la LST). Específicamente en la Antártida se encuentra un volumen menor de investigaciones sobre albedo y LST a partir …
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Examining surface energy and moisture balance changes associated with land conversion from annual to perennial biofuel crops
… expected to alter the surface energy balance via albedo changes and shifts in the partitioning of energy between sensible and latent heat fluxes. The degree to which albedo will shift is uncertain, as is the feedback this shift may have on regional climate. This thesis examines how land conversion …
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Analysis of Pluto's light curve to detect volatile transport
… of Pluto, given the viewing geometry and surface albedo distribution. Using an initial surface albedo distribution based on images taken by New Horizons, changes in the light curve mean magnitudes and amplitudes over time were compared to the smallest magnitude changes detectable by a variety of …
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