Variation of outdoor illumination as a function of solar elevation and light pollution

M Spitschan, GK Aguirre, DH Brainard, AM Sweeney - Scientific reports, 2016 - nature.com
The illumination of the environment undergoes both intensity and spectral changes during
the 24 h cycle of a day. Daylight spectral power distributions are well described by low …

Color and spectral analysis of daylight in southern Europe

J Hernández-Andrés, J Romero, JL Nieves, RL Lee - JOSA A, 2001 - opg.optica.org
We have analyzed the colorimetric and spectral characteristics of 2600 daylight spectra
(global spectral irradiances on a horizontal surface) measured for all sky states during a 2 …

[PDF][PDF] Spectral rendering with daylight: a comparison of two spectral daylight simulation platforms

P Balakrishnan, JA Jakubiec - Proceedings of the BS2019, Rome …, 2019 - researchgate.net
Colours that surround us are not just the result of surface properties, rather the interplay
between the spectral distribution of illuminating light and spectrally specific surface …

Estimating the relative contribution of streetlights, vehicles, and residential lighting to the urban night sky brightness

S Bará, Á Rodríguez-Arós, M Pérez… - Lighting Research …, 2019 - journals.sagepub.com
Under stable atmospheric conditions the brightness of the urban sky varies throughout the
night following the time course of the anthropogenic emissions of light. Different types of …

[HTML][HTML] Matching CIE illuminants to measured spectral power distributions: A method to evaluate non-visual potential of daylight in two European cities

L Bellia, U Błaszczak, F Fragliasso, L Gryko - Solar Energy, 2020 - Elsevier
The evaluation of non-visual effects of light is a crucial topic in lighting design research and
practice. Performing such analysis requires precise information about the spectral …

[PDF][PDF] Irradiation modelling made simple: the cumulative sky approach and its applications

D Robinson, A Stone - PLEA conference, 2004 - alexandria.tue.nl
The ability to map annual irradiation onto the urban fabric can be a powerful tool for
identifying areas in which solar energy may potentially be utilised, as well as where some …

Using all-sky differential photometry to investigate how nocturnal clouds darken the night sky in rural areas

A Jechow, F Hölker, CCM Kyba - Scientific reports, 2019 - nature.com
Artificial light at night has affected most of the natural nocturnal landscapes worldwide and
the subsequent light pollution has diverse effects on flora, fauna and human well-being. To …

Modeling the diurnal variability of effective albedo for cities

DJ Sailor, H Fan - Atmospheric Environment, 2002 - Elsevier
As applied to urban domains, traditional representations of surface albedo do not
adequately account for the complex radiative exchange within the urban canopy. In this …

Dynamic annual daylight simulations based on one-hour and one-minute means of irradiance data

O Walkenhorst, J Luther, C Reinhart, J Timmer - Solar Energy, 2002 - Elsevier
This study investigates the influence of the short-term dynamics of daylight on simulation-
based predictions of the annual daylight availability in a building. To this end annual indoor …

The simulation of annual daylight illuminance distributions—a state-of-the-art comparison of six RADIANCE-based methods

CF Reinhart, S Herkel - Energy and buildings, 2000 - Elsevier
The present work discusses simulation results of annual indoor illuminance distributions for
two office geometries situated in Freiburg, Germany, calculated with six different RADIANCE …