Sky type classification in Harbin during winter
Sky type classification is a significant element in daylight simulation. As a “winter city”, the daylight climate of Harbin is distinctive, and there is therefore a particular need to determine the most appropriate sky models to establish sky luminance distribution in the city and thereby improve th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-09-01
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| Series: | Journal of Asian Architecture and Building Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/13467581.2020.1752217 |
| _version_ | 1797755681942536192 |
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| author | Ying Zi Cheng Sun Yunsong Han |
| author_facet | Ying Zi Cheng Sun Yunsong Han |
| author_sort | Ying Zi |
| collection | DOAJ |
| description | Sky type classification is a significant element in daylight simulation. As a “winter city”, the daylight climate of Harbin is distinctive, and there is therefore a particular need to determine the most appropriate sky models to establish sky luminance distribution in the city and thereby improve the accuracy of daylight simulations. To determine the closest sky type to that of Harbin during winter, sky luminance data consisting of 145 sky elements were collected by a sky scanner at 10 min intervals from June 2018 to February 2019. The sky luminance data were compared with the 15 standard sky definitions, varying from overcast sky to clear sky, proposed by the Commission International de l’ Eclairage (CIE). The sky with the lowest root-mean-square-error was selected as the most appropriate sky type. The results show that clear skies prevail in Harbin during winter, with an occurrence of 70.56%. The dominant sky type is type 12, with an occurrence of 48.57%, followed by types 11, 10, and 8 with occurrences of 17.67%, 5.81%, and 5.36% respectively. The sum of the occurrences of these four sky types exceeds 77%, which means that they can be regarded as generally representative of Harbin’s skies during winter. |
| first_indexed | 2024-03-12T17:50:42Z |
| format | Article |
| id | doaj.art-8cb145d4c8b3491980841d9d36fe3856 |
| institution | Directory Open Access Journal |
| issn | 1347-2852 |
| language | English |
| last_indexed | 2024-03-12T17:50:42Z |
| publishDate | 2020-09-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Architecture and Building Engineering |
| spelling | doaj.art-8cb145d4c8b3491980841d9d36fe38562023-08-03T09:07:49ZengTaylor & Francis GroupJournal of Asian Architecture and Building Engineering1347-28522020-09-0119551552610.1080/13467581.2020.17522171752217Sky type classification in Harbin during winterYing Zi0Cheng Sun1Yunsong Han2Harbin Institute of Technology; Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information TechnologyHarbin Institute of Technology; Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information TechnologyHarbin Institute of Technology; Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information TechnologySky type classification is a significant element in daylight simulation. As a “winter city”, the daylight climate of Harbin is distinctive, and there is therefore a particular need to determine the most appropriate sky models to establish sky luminance distribution in the city and thereby improve the accuracy of daylight simulations. To determine the closest sky type to that of Harbin during winter, sky luminance data consisting of 145 sky elements were collected by a sky scanner at 10 min intervals from June 2018 to February 2019. The sky luminance data were compared with the 15 standard sky definitions, varying from overcast sky to clear sky, proposed by the Commission International de l’ Eclairage (CIE). The sky with the lowest root-mean-square-error was selected as the most appropriate sky type. The results show that clear skies prevail in Harbin during winter, with an occurrence of 70.56%. The dominant sky type is type 12, with an occurrence of 48.57%, followed by types 11, 10, and 8 with occurrences of 17.67%, 5.81%, and 5.36% respectively. The sum of the occurrences of these four sky types exceeds 77%, which means that they can be regarded as generally representative of Harbin’s skies during winter.http://dx.doi.org/10.1080/13467581.2020.1752217cie general standard skysky luminance distributiondaylight climatesky scannernorth-eastern chinese cities |
| spellingShingle | Ying Zi Cheng Sun Yunsong Han Sky type classification in Harbin during winter Journal of Asian Architecture and Building Engineering cie general standard sky sky luminance distribution daylight climate sky scanner north-eastern chinese cities |
| title | Sky type classification in Harbin during winter |
| title_full | Sky type classification in Harbin during winter |
| title_fullStr | Sky type classification in Harbin during winter |
| title_full_unstemmed | Sky type classification in Harbin during winter |
| title_short | Sky type classification in Harbin during winter |
| title_sort | sky type classification in harbin during winter |
| topic | cie general standard sky sky luminance distribution daylight climate sky scanner north-eastern chinese cities |
| url | http://dx.doi.org/10.1080/13467581.2020.1752217 |
| work_keys_str_mv | AT yingzi skytypeclassificationinharbinduringwinter AT chengsun skytypeclassificationinharbinduringwinter AT yunsonghan skytypeclassificationinharbinduringwinter |