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3 results on '"Artificial night light pollution"'

1. (RETRACTED ARTICLE) Effect of artificial light on plant ecology and physiology: A review

Author

MAMTA BAJYA, TEJPAL BAJAYA, RAVNEET KAUR, SALEEM JAHANGIR DAR, and SURESH YADAV

Subjects
Artificial light, Artificial night light pollution, Diurnal cycles, Microenvironment, Photoperiodism, Photoreceptors, Agriculture
Abstract

Early in the 20th century, introduction of artificial light has caused a significant change in human developmental process, but use of artificial light in night has also produced negative effect on phonological, physiological and ecological responses which are sustained in the plants, animals and microorganism from millions of years. In these consequences, most of the plant processes under ANLP are affected intensely and cause compelling changes in plant life cycle from germination to maturity. However, severe effects were observed in the case of pollination, photoreceptor signalling, flowering and microhabitats of plants. Along with, drastic effects on ecology and environments, its relevance to human developmental processes cannot be avoided. Therefore, we need to equipoise between sustainable environment and steady human development processes. Further, selection of plant/crop species, which are more responsive to artificial night light pollution, can minimize the ecological consequences of night light pollution. Likewise, changing artificial nightscape with the implication of new Light emitting diodes lightening policies like Ujala, which are low cost, more durable, eco-friendly and less emitter of CO2, have potential to overcome the biodiversity threat, which arises due to the old artificial lightening technology, used from decades. Hence, adopting new advanced artificial lightening technology and understanding its impact on plant ecosystem will be a future challenge for plant biologists. However, drastic effects of artificial light during night time are enormous; therefore, the present topic is focused on the physiological and ecological consequences of artificial night light pollution on plant systems.

Published
2022

2. Night light pollution: how global religious customs shape its patterns

Author

Universitat Politècnica de Catalunya. Universitat de Barcelona, Carrasco Jordan, Josep Lluís, Cordón Guerrero, Yago, Universitat Politècnica de Catalunya. Universitat de Barcelona, Carrasco Jordan, Josep Lluís, and Cordón Guerrero, Yago

Abstract

In the last decades, dark skies colored with an orange glow have grown to be the main norm during night in urban areas all around the world. Artificial light at night has grown a rough average of 6% every year globally, and its implications in detriment of the environment and the biodiversity are vast and diverse. The only way to mitigate its effects is based on restrictive olicymaking both publicly and privately; to do so, we need to understand better its ehavior. Local and regional patterns regarding light pollution have usually been demonstrated with socioeconomic data. However, with the normalization of the access to satellite remote imagery, we can extract essential information from everything that is visible (and/or measurable) on Earth. With these innovative tools, we wanted to test the hypothesis of worldwide religious events orfestivities shaping the annual light pollution peaks or highest frequency periods. Thanks to satellite imagery taken by the VIIRS sensor on board of the Suomi NPP weather satellite, and the Google Earth Engine platform, we were able to extract the monthly Light Frequency Time Series for the period 2016-2019, for 136 countries. Along with Circular Statistics techniques to study the cyclical time patterns of light pollution – and data visualization, we succeeded to relate the global religious events with a cyclical light pollution pattern. Above all, Christmas, Ramadan, and Diwali festivities, showed to have a significant effect on the annual timing of light pollution peaks in countries of Europe, Asia, and North America, except for Africa in the case of the Muslim festivity, Ramadan. Overall, however, Christmas turned out to be the most light-pollutant festivity in the world, due to the export of Christmas from christian countries to Asian countries such as China. For Islam, only countries from Middle East & North Africa –Islam’s cradle – showed a clear pattern during Ramadan months; in other Muslim countries, the yearly light pollutio

Published
2022

3. Night light pollution: how global religious customs shape its patterns

Author

Cordón Guerrero, Yago, Universitat Politècnica de Catalunya. Universitat de Barcelona, and Carrasco Jordan, Josep Lluís

Subjects
Estadística matemàtica, Mathematical statistics, Circular Statistics, Matemàtiques i estadística::Estadística matemàtica [Àrees temàtiques de la UPC], Bayesian Modeling, 62 Statistics::62F Parametric inference [Classificació AMS], Artificial Night Light Pollution, Time Series, Bayesian Statistics
Abstract

In the last decades, dark skies colored with an orange glow have grown to be the main norm during night in urban areas all around the world. Artificial light at night has grown a rough average of 6% every year globally, and its implications in detriment of the environment and the biodiversity are vast and diverse. The only way to mitigate its effects is based on restrictive olicymaking both publicly and privately; to do so, we need to understand better its ehavior. Local and regional patterns regarding light pollution have usually been demonstrated with socioeconomic data. However, with the normalization of the access to satellite remote imagery, we can extract essential information from everything that is visible (and/or measurable) on Earth. With these innovative tools, we wanted to test the hypothesis of worldwide religious events orfestivities shaping the annual light pollution peaks or highest frequency periods. Thanks to satellite imagery taken by the VIIRS sensor on board of the Suomi NPP weather satellite, and the Google Earth Engine platform, we were able to extract the monthly Light Frequency Time Series for the period 2016-2019, for 136 countries. Along with Circular Statistics techniques to study the cyclical time patterns of light pollution – and data visualization, we succeeded to relate the global religious events with a cyclical light pollution pattern. Above all, Christmas, Ramadan, and Diwali festivities, showed to have a significant effect on the annual timing of light pollution peaks in countries of Europe, Asia, and North America, except for Africa in the case of the Muslim festivity, Ramadan. Overall, however, Christmas turned out to be the most light-pollutant festivity in the world, due to the export of Christmas from christian countries to Asian countries such as China. For Islam, only countries from Middle East & North Africa –Islam’s cradle – showed a clear pattern during Ramadan months; in other Muslim countries, the yearly light pollution peak occurred during Christmas. Our evidence highlighted, once again, the gregarious behavior of humans regarding their light pemission patterns, and how predictable are the annual periods of highest artificial light pollution at night. We believe this can be useful regarding new policies for the mitigation of the effects of night light pollution during the celebration of global religious events such as Christmas, to have a responsible and sustainable relation with our environment.

Published
2022

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