RESEARCH ARTICLE
Classification of Hong Kong Prevailing Standard Skies
D.H.W. Li*, H.L. Tang
Article Information
Identifiers and Pagination:
Year: 2008Volume: 2
First Page: 251
Last Page: 256
Publisher ID: TOBCTJ-2-251
DOI: 10.2174/1874836800802010251
Article History:
Received Date: 31/03/2008Revision Received Date: 4/09/2008
Acceptance Date: 5/09/2008
Electronic publication date: 10/10/2008
Collection year: 2008
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Abstract
In 2003, the International Commission on Illumination (CIE) adopted a range of 15 standard skies covering the whole probable spectrum of usual skies in the world. A good understanding of the sky luminance distribution is essential to daylighting developments and energy-efficient building designs. This paper studies the work on the identification of Hong Kong prevailing standard skies. Ten-minute data recorded between 1999 and 2005 in Hong Kong were used for the analysis. An approach to identify a subset of 6 sky standards including overcast, partly cloudy and clear sky types was proposed. The performance of the proposed approach was evaluated against the measured data in terms of root-meansquare error (RMSE). The statistical analysis showed that the proposed method produced acceptable agreements with the measured data and the overall RMSE was computed of 30%