Improved ground based sky camera for studies of enhanced spectral UV irradiance
Paper
Paper/Presentation Title | Improved ground based sky camera for studies of enhanced spectral UV irradiance |
---|---|
Presentation Type | Paper |
Authors | Sabburg, J. (Author) and Long, C. N. (Author) |
Journal or Proceedings Title | Geophysical Research Abstracts |
Journal Citation | 6 (00544), pp. 1-1 |
Number of Pages | 1 |
Year | 2004 |
Place of Publication | Germany |
Web Address (URL) of Paper | http://www.cosis.net/abstracts/EGU04/00544/EGU04-J-00544.pdf |
Conference/Event | EGU 1: 1st European GeoSciences Union Genral Assembly |
Event Details | EGU 1: 1st European GeoSciences Union Genral Assembly Event Date 25 to end of 30 Apr 2004 Event Location Nice, France |
Abstract | A recent World Meteorological Organisation report discussed the importance of continued study of the effect of clouds on the solar UV radiation reaching the earths surface. The report mentions that the use of all-sky imagery offers the potential to understand and quantify cloud effects more accurately. There are an increasing number of studies investigating the enhancement of surface UV irradiance, and UV actinic flux, using automated CCD and sky cameras. This paper describes image-processing improvements and new algorithms applicable to a commercially available, relatively low cost all-sky camera (TSI-440), we use for investigating cloud enhanced spectral UV irradiance. Specifically, these include improved shadow band masking, and the addition of three new algorithms relating to cloud amount at different spatial positions and the visible brightness of clouds surrounding the sun. We also present a summary of 5-minute resolution cloud enhanced UV index and spectral UV irradiance over a 5-month period at a Southern Hemispheric sub-tropical latitude site using these new techniques, as well as how these findings relate to the current literature on this topic. |
Keywords | UV exposure; clouds; all-sky imagery |
ANZSRC Field of Research 2020 | 519999. Other physical sciences not elsewhere classified |
370106. Atmospheric radiation | |
370107. Cloud physics | |
Public Notes | Only abstract published. |
Byline Affiliations | Centre for Astronomy, Solar Radiation and Climate |
Pacific Northwest National Laboratory, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q04xy/improved-ground-based-sky-camera-for-studies-of-enhanced-spectral-uv-irradiance
Download files
Published Version
Sabburg_Long_EGU1_2004_PV.pdf | ||
File access level: Anyone |
Other Documentation
COSIS_net_List_of_Accepted_Contributions_-_AS1_10_Solar_UV.pdf | ||
File access level: Anyone |
416
total views67
total downloads5
views this month4
downloads this month