Light Pollution of the Mountain Areas in Poland / Zanieczyszczenie Świetlne W Obszarach Górskich W Polsce

Ściężor, Tomasz; Kubala, Marek; Kaszowski, Wiesław

doi:10.2478/v10265-012-0042-4

Cited by 15 publications

(6 citation statements)

References 13 publications

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“…The issue of the clarity of the night sky is a complex issue and goes beyond the scope of this paper. However, when analyzing the works which present the measured values of the brightness of the night sky [24], it can be stated that luminance in summertime usually does not exceed 0.005 cd/m 2 . Thus, in further considerations, the curve V'(λ) is considered when assessing the light pollution of the night sky.…”

Section: Simulation Results and Their Analysismentioning

confidence: 99%

“…In general, the number of works devoted to the influence of SPD on the effect of light pollution is significant [11,[23][24][25][26][27][28][29][30][31][32][33]. Within these studies, there are many works in which analysis of the influence of SPD on light pollution effect is extended by consideration of spectral reflectance of the ground or atmosphere properties.…”

Section: Introductionmentioning

confidence: 99%

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Influence of a Light Source Installed in a Luminaire of Opal Sphere Type on the Effect of Light Pollution

Tabaka

Rózga

2020

Energies

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The article presents the results of the studies concerning the influence of a light source installed in luminaire of opal sphere type on the light pollution effect of the night sky. It is known from literature reports that the effect of light pollution is influenced by the spectral distribution of light. Although the influence of the spectral distribution has been widely studied from different perspectives, there is still a need to study this phenomenon—for example, from the point of view of the spectral reflection properties of the ground, on which the lanterns are installed. Hence, the above-mentioned aspect was considered in the authors’ investigations. The luminaire considered has been equipped with 20 different light sources, including the latest generation of lamps (light-emitting diodes, LEDs) as well as the conventional ones. With respect to these light sources, the measurements of light distribution and spectral distribution of emitted radiation of the luminaire were performed. Having these measurement data, the simulations were carried out using the DIALux software, and the calculations were made using the specially prepared calculation tool. On the basis of the results obtained in this way this was stated that the type of light source installed in the luminaire has a significant effect on the sky glow. An important factor affecting light pollution is not only the value of the luminous flux emitted upward but also the spectral characteristics of the emitted radiation, the impact of which is most noticeable. The conclusions from the studies indicate the next steps in the analysis of the light pollution effect. These steps will be focused on extended analysis of LEDs as modern and developed light sources.

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Section: Simulation Results and Their Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of a Light Source Installed in a Luminaire of Opal Sphere Type on the Effect of Light Pollution

Tabaka

Rózga

2020

Energies

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“…The most important change was the use of remote data transfer in the measurement process, which reduced the time, organisational and logistical constraints prevalent when using the manual method for such a large area, and also in uenced the daily repeatability and comparability of the measurements carried out. This is because the phenomenon of light pollution is characterised by variability depending not only on the phase of the moon, but primarily on the prevailing atmospheric conditions and air quality [8,10]. On cloudless and overcast nights, the measurements obtained do not differ signi cantly from each other, while on nights with changing cloud cover, the results can differ signi cantly, as cloud cover considerably affects the night sky brightness measurements.…”

Section: Stages Of the Project Implementationmentioning

confidence: 99%

“…The phenomenon is aggravated by the presence of illuminated advertising neon signs and excessive backlighting of architectural elements and city illuminations. In addition, research has shown that light pollution is exacerbated by the scattering of arti cial light in the atmosphere by dust of anthropogenic origin present in the atmosphere, as well as being ampli ed by the re ection of light from clouds, especially low-and mid-level clouds [4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Measuring light pollution in the night sky – from technology demonstrator to monitoring system

Karpińska

Kunz

2023

Preprint

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Pollution of the night sky by artificial light has now become an important element of the modern city landscape. The decline in the quality of the sky observed at night in urban areas has already been noticed even by residents unaware of its origin. A starry sky is nowadays not easy to observe even in places far from large conurbations or smaller cities. More and more places are losing access to the previously natural privilege of observing the dark sky, and their inhabitants are thus systematically exposed to all the direct and indirect negative effects of this phenomenon. Monitoring the brightness of the night sky is gaining interest from a growing number of interdisciplinary research groups being established around the world, including Poland. In Toruń, the first measurements of the magnitude of this phenomenon, together with the determination of its spatial scale, were started using handheld devices in 2017. In the following years, efforts were made to improve the data acquisition process by creating a prototype – a technology demonstrator and, consequently, a commercial version of an automatic device measuring the surface brightness of the night sky. This paper presents the stages of the project aimed at developing a light pollution monitoring system, which has been consistently implemented in Toruń. The most important component of this system is a measuring device of our own design and construction. The monitoring system designed and operating in Toruń, starting in 2019, is being further developed with new components and monitoring (measurement) sites being systematically added, making the city’s observation network increasingly dense. The devices built using the LoRa standard for wireless data exchange implement the concept of the Internet of Things, fitting in with the objectives of a smart city.

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“…In areas that are free from light pollution, the overcast sky is darker than the cloudless one, because the clouds obscure natural light sources, such as stars, planets and the Moon, without scattering any ground-based artificial lights. It was found that the shape of the curve representing the brightness of the night sky vs. the cloudiness is one of the best indicators of the level of light pollution [3]. This means that the ability to determine the presence of clouds in the sky and their possible genus is extremely important for the proper position assessment of astronomical observations.…”

mentioning

confidence: 99%

Overnight measurements of the sky brightness as a method for assessing the cloudiness

Ściężor

2019

Photon.Lett.PL

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Determining the state of cloudiness at night is always a problem, especially at low levels of light pollution. This paper presents an innovative method of assessing the cloudiness of the night sky solely on the basis of all-night measurements of the brightness of the sky using generally available SQM meters. Using the numerical method of calculating the discrete derivative of the overnight brightness of the night sky from time it is possible not only to distinguish a cloudless sky from a cloudy one, but even to distinguish the high level clouds from medium and low level ones. Full Text: PDF ReferencesKyba C.C.M., Ruhtz T., Fischer J., Hölker F., Cloud Coverage Acts as an Amplifier for Ecological Light Pollution in Urban Ecosystems, PLoS ONE, vol. 6, no. 3, 2011, e17307. CrossRef Ściężor T., The impact of clouds on the brightness of the night sky, to be published in Journal of Quantitative Spectroscopy and Radiative Transfer, 2020 CrossRef Ściężor T., Kubala M., Kaszowski W., Light Pollution of the Mountain Areas in Poland, Archives of Environmental Protection, Vol.38, No.4, 2012, pp. 59-69. CrossRef Crawford D.L., Photometry: terminology and units in the lighting and astronomical sciences, The Observatory, vol. 117, 1997, pp. 14-18. DirectLink Ściężor T., Kubala M., Particulate matter as an amplifier for astronomical light pollution, Monthly Notices of the Royal Astronomical Society, vol. 444, no. 3, 2014, pp. 2487-2493. CrossRef

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Light Pollution of the Mountain Areas in Poland / Zanieczyszczenie Świetlne W Obszarach Górskich W Polsce

Cited by 15 publications

References 13 publications

Influence of a Light Source Installed in a Luminaire of Opal Sphere Type on the Effect of Light Pollution

Influence of a Light Source Installed in a Luminaire of Opal Sphere Type on the Effect of Light Pollution

Measuring light pollution in the night sky – from technology demonstrator to monitoring system

Overnight measurements of the sky brightness as a method for assessing the cloudiness

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