Hämmerle Martin; Gál Tamás; Unger János; Matzarakis Andreas: Introducing a script for calculating the sky view factor used for urban climate investigations. In: Acta climatologica, (44-45). pp. 83-92. (2011)
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Absztrakt (kivonat)
The sky view factor (SVF) is a parameter widely used in several research fields, applied research and planning. It is of crucial importance concerning the energy budget of a certain location. Many methods for calculating the SVF have been developed. In the present study, a selection of methods and models is analyzed in order to find out about possible improvements. Also, a new method using GIS software is introduced. In the city of Szeged fisheye pictures were taken along transects and evaluated. For the images' coordinates, SVF was calculated by numerical models which use a 3D-building database as input. Also, a set of artificial fisheye pictures was created and used for validating the applied methods. The calculations were performed with the models SkyHelios (Matuschek and Matzarakis 2010, Matzarakis and Matuschek 2010), SOLWEIG (Lindberg et al. 2008) and the ArcView SVF-Extension (Gál et al. 2009). The evaluation of the fisheye pictures was done according to the manual Steyn-method (Steyn 1980), RayMan (Matzarakis et al. 2007 2010) and with BMSkyView (Rzepa and Gromek 2006). Additionally, a new ArcView-script has been developed in order to enhance the only manual method (Steyn 1980). The comparison of the obtained results showed a systematic deviation of the SVF values. After including a cosine weighting factor in the differing models, all SVF values corresponded to each other.
| Mű típusa: | Cikk, tanulmány, mű |
|---|---|
| Befoglaló folyóirat/kiadvány címe: | Acta climatologica |
| Dátum: | 2011 |
| Kötet: | 44-45 |
| ISSN: | 0563-0614 |
| Oldalak: | pp. 83-92 |
| Nyelv: | angol |
| Kiadás helye: | Szeged |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/38805/ |
| Kulcsszavak: | Éghajlat - városi, Éghajlattan |
| Megjegyzések: | Bibliogr.: 92. p. ; ill. ; összefoglalás angol nyelven |
| Szakterület: | 01. Természettudományok 01. Természettudományok > 01.05. Föld- és kapcsolódó környezettudományok |
| Feltöltés dátuma: | 2016. okt. 15. 14:09 |
| Utolsó módosítás: | 2022. máj. 11. 09:06 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/16938 |
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