Graduate theses
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Current Record: 8 of 1639
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Title |
Estimating the albedo of urban materials through the bidirectional reflectance distribution function |
Alternative Title |
Εκτίμηση της λευκαύγειας αστικών υλικών μέσω της διδιευθυνσιακής συνάρτησης κατανομής της ανάκλασης |
Author
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Τσερέπης, Μάριος
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Thesis advisor
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Χαρμανδάρης, Βασίλης
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Abstract |
Cities have their own microclimates, which are influenced by a
variety of factors. Some of these are the materials used for buildings and roads,
the height and density of building, and the shapes of surfaces. This microclimate
can have a significant impact on the temperature inside cities compared to rural
areas, which can cause heat stress related problems for their residents[1]. The
albedo of the materials is of particular importance, because it determines the total
amount of radiation that is reflected by them. The remaining light that isn’t
reflected by the material, is instead absorbed by it, thus increasing their
temperature[2]. Therefore, it is important to understand the radiative properties
of materials, the way these are connected to the shape of their surface, and their
albedo. This can be achieved by measuring the radiance leaving the materials
using a hyperspectral radiometer, which is able to capture a wide and continuous
range of wavelengths. In this study, a method was developed to derive the albedo
of materials by calculating the Bidirectional Reflectance Distribution Function
(BRDF) using hyperspectral measurements taken under direct sunlight, and it was
used to calculate the albedo for materials used in the city of Heraklion.
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Language |
English |
Issue date |
2024-07-11 |
Collection
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School/Department--School of Sciences and Engineering--Department of Physics--Graduate theses
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Type of Work--Graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/0/f/2/metadata-dlib-1719310220-186620-7729.tkl
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Views |
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