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Kocifaj, M. |
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Title |
Modelling the spectral behaviour of night skylight close to artificial light sources |
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Journal Article |
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2010 |
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Monthly Notices of the Royal Astronomical Society |
Abbreviated Journal |
MNRAS |
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403 |
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4 |
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2105-2110 |
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Keywords |
scattering; atmospheric effects; light pollution; methods: numerical; Modeling |
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Spectral features of the night sky are simulated under cloudless conditions. Numerical runs show that spectral composition of the diffuse light changes over the whole sky and sky radiances quickly respond to altering aerosol characteristics, such as the asymmetry parameter, single scattering albedo and total optical thickness. The general trend is a steep decrease of diffuse irradiance with a distance from the city centre. Powerstar HQI-NDL lamps produce more light at short wavelengths, thus implying the higher levels of light pollution. The red light may markedly contribute to the obtrusive light if Vialox NAV-4Y lamps are considered as a prevailing source of light in the model town. In a non-turbid atmosphere, the minimum radiance is notoriously observed close to the zenith. As aerosol loading increases, the minimum radiance is shifted to larger zenith angles at the opposite side of the light source. Obtained results may serve as corrections to spectrophotometry data, as the light pollution can be easily calculated for any sky element and for any spectral band. |
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0035-8711 |
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IDA @ john @ |
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276 |
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Skibba, R. A.; Bamford, S. P.; Nichol, R. C.; Lintott, C. J.; Andreescu, D.; Edmondson, E. M.; et al. |
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Skibba, R. A., Bamford, S. P., Nichol, R. C., Lintott, C. J., Andreescu, D., Edmondson, E. M., … others. (2009). Galaxy Zoo: disentangling the environmental dependence of morphology and colour. |
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2009 |
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Monthly Notices of the Royal Astronomical Society |
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399 |
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2 |
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966–982 |
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Remote Sensing |
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LoNNe @ kagoburian @ |
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971 |
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Quinn, G.E.; Shin, C.H.; Maguire, M.G.; Stone, R.A. |
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Title |
Myopia and ambient lighting at night |
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Journal Article |
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1999 |
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Nature |
Abbreviated Journal |
Nature |
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399 |
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6732 |
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113-114 |
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Human Health |
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Myopia, or short-sightedness, occurs when the image of distant objects, focused by the cornea and lens, falls in front of the retina. It commonly arises from excessive postnatal eye growth, particularly in the vitreous cavity. Its prevalence is increasing and now reaches 70-90% in some Asian populations1,2. As well as requiring optical correction, myopia is a leading risk factor for acquired blindness in adults because it predisposes individuals to retinal detachment, retinal degeneration and glaucoma. It typically develops in the early school years but can manifest into early adulthood2. Its aetiology is poorly understood but may involve genetic and environmental factors1,2, such as viewing close objects, although how this stimulates eye growth is not known3. We have looked at the effects of light exposure on vision, and find a strong association between myopia and night-time ambient light exposure during sleep in children before they reach two years of age. |
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0028-0836 |
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PMID:10335839 |
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GFZ @ kyba @ |
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2550 |
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Wang, X.; Liu, G.; Coscieme, L.; Giannetti, B.F.; Hao, Y.; Zhang, Y.; Brown, M.T. |
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Study on the emergy-based thermodynamic geography of the Jing-Jin-Ji region: Combined multivariate statistical data with DMSP-OLS nighttime lights data |
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2019 |
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Ecological Modelling |
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Ecological Modelling |
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397 |
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1-15 |
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Remote Sensing |
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Emergy analysis is one of the ecological thermodynamics methods. With a specific set of indicators, it is proved to be highly informative for sustainability assessment of national/regional economies. However, a large amount of data needed for its calculation are from official statistical data by administrative divisions. The spatialization of emergy in early researches were limited to the administrative boundaries. The emergy inside an administrative boundary renders a single value, which hides plenty of information for more precise regional planning.
This study develops a new methodology for mapping the spatial distribution of emergy density of a region. The renewable resource distribution can be mapped based on latest geospatial datasets and GIS technology, instead of solely relying on statistics and yearbooks data. Besides, a new spatialization method of non-renewable emergy based on DMSP-OLS nighttime lights data is proposed. Combined with the radiation calibration data, the problem of light saturation of DMSP-OLS nighttime lights data was solved to improve the emergy spatial detail of city centers. With a case study of Jing-Jin-Ji region, results showed that this method could generate a high-resolution map of emergy use, and depict human disturbance to the environment in a more precise manner. This may provide supportive information for more precise land use planning, strategic layout and policy regulation, and is helpful for regional sustainable development. |
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0304-3800 |
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GFZ @ kyba @ |
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2192 |
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Bamford, S.P.; Nichol, R.C.; Baldry, I.K.; Land, K.; Lintott, C.J.; Schawinski, K.; Slosar, A.; Szalay, A.S.; Thomas, D.; Torki, M.; Andreescu, D.; Edmondson, E.M.; Miller, C.J.; Murray, P.; Raddick, M.J.; Vandenberg, J. |
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Title |
Galaxy Zoo: the dependence of morphology and colour on environment |
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Journal Article |
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2009 |
Publication |
Monthly Notices of the Royal Astronomical Society |
Abbreviated Journal |
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393 |
Issue |
4 |
Pages |
1324-1352 |
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Remote Sensing |
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0035-8711 |
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LoNNe @ kagoburian @ |
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902 |
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