NIGHT SKY BRIGHTNESS ABOVE ZAGREB 2012.-2017.
The night sky brightness at the RGN site (near the centre of Zagreb, Croatia) was monitored form January 2012. to December 2017. The gathered data show that the average night sky brightness in this period did not change significantly, apart from differences caused by yearly variations in meteorologi...
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| Format: | Article |
| Language: | English |
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University of Zagreb
2018-01-01
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| Series: | Rudarsko-geološko-naftni Zbornik |
| Subjects: | |
| Online Access: | https://hrcak.srce.hr/file/295958 |
| _version_ | 1827160672602947584 |
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| author | Željko Andreić |
| author_facet | Željko Andreić |
| author_sort | Željko Andreić |
| collection | DOAJ |
| description | The night sky brightness at the RGN site (near the centre of Zagreb, Croatia) was monitored form January 2012. to December 2017. The gathered data show that the average night sky brightness in this period did not change significantly, apart from differences caused by yearly variations in meteorological parameters. The nightly minima, maxima and mean values of the sky brightness do change considerably due to changes in meteorological conditions, often being between 2 and 3 magnitudes. The seasonal probability curves and histograms are constructed and are used to obtain additional information on the light pollution at the RGN site. They reveal that the night sky brightness clutters around two peaks, at about 15.0 mag/arcsec2 and at about 18.2 mag/arcsec2. The tendency to slightly lower brightness values in spring and summer can also be seen in the data. Two peaks correspond to cloudy and clear nights respectively, the difference in brightness between them being about 3 magnitudes. A crude clear/cloudy criterion can be defined too: the minimum between two peaks is around 16.7 mag/arcsec2. The brightness values smaller than thisare attributed to clear nights and vice-versa. Comparison with Vienna and Hong-Kong indicates that the light pollution of Zagreb is a few times larger. |
| first_indexed | 2024-04-24T09:26:26Z |
| format | Article |
| id | doaj.art-2380511acbeb4cd9aa5bd2159e81765a |
| institution | Directory Open Access Journal |
| issn | 0353-4529 1849-0409 |
| language | English |
| last_indexed | 2025-03-21T00:16:45Z |
| publishDate | 2018-01-01 |
| publisher | University of Zagreb |
| record_format | Article |
| series | Rudarsko-geološko-naftni Zbornik |
| spelling | doaj.art-2380511acbeb4cd9aa5bd2159e81765a2024-08-03T08:59:30ZengUniversity of ZagrebRudarsko-geološko-naftni Zbornik0353-45291849-04092018-01-01333859410.17794/rgn.2018.3.9NIGHT SKY BRIGHTNESS ABOVE ZAGREB 2012.-2017.Željko Andreić0University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, Pierottijeva 6, 10000 Zagreb, CroatiaThe night sky brightness at the RGN site (near the centre of Zagreb, Croatia) was monitored form January 2012. to December 2017. The gathered data show that the average night sky brightness in this period did not change significantly, apart from differences caused by yearly variations in meteorological parameters. The nightly minima, maxima and mean values of the sky brightness do change considerably due to changes in meteorological conditions, often being between 2 and 3 magnitudes. The seasonal probability curves and histograms are constructed and are used to obtain additional information on the light pollution at the RGN site. They reveal that the night sky brightness clutters around two peaks, at about 15.0 mag/arcsec2 and at about 18.2 mag/arcsec2. The tendency to slightly lower brightness values in spring and summer can also be seen in the data. Two peaks correspond to cloudy and clear nights respectively, the difference in brightness between them being about 3 magnitudes. A crude clear/cloudy criterion can be defined too: the minimum between two peaks is around 16.7 mag/arcsec2. The brightness values smaller than thisare attributed to clear nights and vice-versa. Comparison with Vienna and Hong-Kong indicates that the light pollution of Zagreb is a few times larger.https://hrcak.srce.hr/file/295958light pollutionnight sky brightnesssite testingatmospheric effectsZagreb |
| spellingShingle | Željko Andreić NIGHT SKY BRIGHTNESS ABOVE ZAGREB 2012.-2017. Rudarsko-geološko-naftni Zbornik light pollution night sky brightness site testing atmospheric effects Zagreb |
| title | NIGHT SKY BRIGHTNESS ABOVE ZAGREB 2012.-2017. |
| title_full | NIGHT SKY BRIGHTNESS ABOVE ZAGREB 2012.-2017. |
| title_fullStr | NIGHT SKY BRIGHTNESS ABOVE ZAGREB 2012.-2017. |
| title_full_unstemmed | NIGHT SKY BRIGHTNESS ABOVE ZAGREB 2012.-2017. |
| title_short | NIGHT SKY BRIGHTNESS ABOVE ZAGREB 2012.-2017. |
| title_sort | night sky brightness above zagreb 2012 2017 |
| topic | light pollution night sky brightness site testing atmospheric effects Zagreb |
| url | https://hrcak.srce.hr/file/295958 |
| work_keys_str_mv | AT zeljkoandreic nightskybrightnessabovezagreb20122017 |