| Records |
| Author |
Kocifaj, M.; Bará, S. |
Title  |
Aerosol characterization using satellite remote sensing of light pollution sources at night |
Type |
Journal Article |
| Year |
2020 |
Publication |
Monthly Notices of the Royal Astronomical Society: Letters |
Abbreviated Journal |
MNRAS |
| Volume |
495 |
Issue |
1 |
Pages |
L76-L80 |
| Keywords |
Skyglow; Radiative transfer; Light scattering; Aerosols |
| Abstract |
A demanding challenge in atmospheric research is the night-time characterization of aerosols using passive techniques, that is, by extracting information from scattered light that has not been emitted by the observer. Satellite observations of artificial night-time lights have been used to retrieve some basic integral parameters, like the aerosol optical depth. However, a thorough analysis of the scattering processes allows one to obtain substantially more detailed information on aerosol properties. In this letter, we demonstrate a practicable approach for determining the aerosol particle size number distribution function in the air column, based on the measurement of the angular radiance distribution of the scattered light emitted by night- time lights of cities and towns, recorded from low Earth orbit. The method is self-calibrating and does not require the knowledge of the absolute city emissions. The input radiance data are readily available from several spaceborne platforms, like the VIIRS-DNB radiometer onboard the Suomi-NPP satellite. |
| Address |
Faculty of Mathematics, Physics, and Informatics, Comenius University, Mlynska Dolina, 842 48 Bratislava, Slovakia; Miroslav.Kocifaj(at)savba.sk |
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Thesis |
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| Publisher |
OUP |
Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
English |
Original Title |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1745-3925 |
ISBN |
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Conference |
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| Notes |
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Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
2910 |
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| Author |
Rydell, J.; Eklöf, J.; Sánchez-Navarro, S. |
| Title |
Age of enlightenment: long-term effects of outdoor aesthetic lights on bats in churches |
Type |
Journal Article |
| Year |
2017 |
Publication |
Royal Society Open Science |
Abbreviated Journal |
R. Soc. open sci. |
| Volume |
4 |
Issue |
8 |
Pages |
161077 |
| Keywords |
Animals |
| Abstract |
We surveyed 110 country churches in south-western Sweden for presence of brown long-eared bats Plecotus auritus in summer 2016 by visual inspection and/or evening emergence counts. Each church was also classified according to the presence and amount of aesthetic directional lights (flood-lights) aimed on its walls and tower from the outside. Sixty-one of the churches had previously been surveyed by one of us (J.R.) between 1980 and 1990, before lights were installed on Swedish churches, using the same methods. Churches with bat colonies had decreased significantly in frequency from 61% in 1980s to 38% by 2016. All abandoned churches had been fitted with flood-lights in the period between the two surveys. The loss of bat colonies from lit churches was highly significant and most obvious when lights were applied from all directions, leaving no dark corridor for the bats to leave and return to the roost. In contrast, in churches that were not lit, all of 13 bat colonies remained after 25+ years between the surveys. Lighting of churches and other historical buildings is a serious threat to the long-term survival and reproduction of light-averse bats such as Plecotus spp. and other slow-flying species. Bat roosts are strictly protected according to the EU Habitats Directive and the EUROBATS agreement. Lighting of buildings for aesthetic purposes is becoming a serious environmental issue, because important bat roosts are destroyed in large numbers, and the problem should be handled accordingly. As a start, installation of flood-lights on historical buildings should at least require an environmental impact assessment (EIA). |
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Series Title |
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Series Issue |
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Edition |
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| ISSN |
2054-5703 |
ISBN |
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Approved |
no |
| Call Number |
LoNNe @ kyba @; GFZ @ kyba @ |
Serial |
1698 |
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| Author |
Verma, A.K.; Singh, S.; Rizvi, S.I. |
| Title |
Age-dependent altered redox homeostasis in the chronodisrupted rat model and moderation by melatonin administration |
Type |
Journal Article |
| Year |
2020 |
Publication |
Chronobiology International |
Abbreviated Journal |
Chronobiol Int |
| Volume |
in press |
Issue |
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Pages |
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| Keywords |
Animals; Aging; artificial light-at-night; circadian disruption; melatonin; oxidative stress |
| Abstract |
Circadian disruption or chronodisruption (CD) occurs when day-night cycles and other internal rhythms are not adjusted to environmental light-dark regimens and are unable to synchronize among each other. Artificial light-induced oxidative stress is a major concern as the circadian physiology of the cell is chronically altered due to suppression of the time-keeping hormone, melatonin. The relationship between age-related impaired redox status and disrupted circadian rhythms is still not fully understood. The present study evaluated the effect of artificial light at night (ALAN) with respect to aging and role of melatonin supplementation. This study was conducted on young (3 months) and old (24 months) male Wistar rats subdivided into four groups control (C), melatonin treated (MLT), artificial light at night (ALAN), and ALAN+MLT group. Pronounced changes were observed in the old compared to the young rats. Reactive oxygen species (ROS), malondialdehyde (MDA), plasma membrane redox system (PMRS), protein carbonyl (PCO), and sialic acid (SA) were significantly (p </= 0.05) increased, while ferric reducing ability of plasma (FRAP) and reduced glutathione (GSH) were significantly (p </= 0.05) suppressed in light-exposed young and old animals compared to their age-matched controls. Advanced oxidation protein products (AOPP) increased non-significantly in young rats of the ALAN group; however, significant (p </= 0.05) changes were observed in the old rats of the ALAN group compared to their respective controls. Advanced glycation end products (AGEs) increased and acetylcholinesterase (AChE) activity decreased, significantly (p </= 0.05) in young animals of the ALAN group, while nonsignificant changes of both parameters were recorded in the old animals of the ALAN groups compared with their age-matched controls. Melatonin supplementation resulted in maintenance of the normal redox homeostasis in both young and old animal groups. Our study suggests that aged rats are more susceptible to altered photoperiod as their circadian redox homeostasis is under stress subsequent to ALAN. Melatonin supplementation could be a promising means of alleviating age-related circadian disturbances, especially in light-polluted areas. |
| Address |
Department of Biochemistry, University of Allahabad , Allahabad, India |
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Place of Publication |
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| Language |
English |
Summary Language |
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Edition |
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| ISSN |
0742-0528 |
ISBN |
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| Notes |
PMID:32731777 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
3067 |
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| Author |
Aschoff, J. |
| Title |
Aktivitätsmuster der Tagesperiodik |
Type |
Journal Article |
| Year |
1957 |
Publication |
Die Naturwissenschaften |
Abbreviated Journal |
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| Volume |
44 |
Issue |
13 |
Pages |
361-367 |
| Keywords |
Human Health |
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no |
| Call Number |
LoNNe @ kagoburian @ |
Serial |
709 |
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| Author |
Kennard, D.C.; Chamberlin, V.D. |
| Title |
All-night Light for Layers |
Type |
Report |
| Year |
1931 |
Publication |
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Abbreviated Journal |
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| Volume |
Bulletin 476 |
Issue |
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Pages |
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Animals |
| Abstract |
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Ohio Agricultural Experiment Station |
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no |
| Call Number |
GFZ @ kyba @ |
Serial |
2392 |
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