Retrieving cloud characteristics from ground-based daytime color all-sky images

Article

Long, C. N., Sabburg, J. M., Calbo, J. and Pages, D.. 2006. "Retrieving cloud characteristics from ground-based daytime color all-sky images." Journal of Atmospheric and Oceanic Technology. 23 (5), pp. 633-652. https://doi.org/10.1175/JTECH1875.1

Article Title	Retrieving cloud characteristics from ground-based daytime color all-sky images
ERA Journal ID	1920
Article Category	Article
Authors	Long, C. N. (Author), Sabburg, J. M. (Author), Calbo, J. (Author) and Pages, D. (Author)
Journal Title	Journal of Atmospheric and Oceanic Technology
Journal Citation	23 (5), pp. 633-652
Number of Pages	20
Year	2006
Place of Publication	Boston, MA. USA
ISSN	0739-0572
	1520-0426
Digital Object Identifier (DOI)	https://doi.org/10.1175/JTECH1875.1
Web Address (URL)	http://journals.ametsoc.org/doi/abs/10.1175/JTECH1875.1
Abstract	A discussion is presented of daytime sky imaging and techniques that may be applied to the analysis of full-color sky images to infer cloud macrophysical properties. Descriptions of two different types of sky-imaging systems developed by the authors are presented, one of which has been developed into a commercially available instrument. Retrievals of fractional sky cover from automated processing methods are compared to human retrievals, both from direct observations and visual analyses of sky images. Although some uncertainty exists in fractional sky cover retrievals from sky images, this uncertainty is no greater than that attached to human observations for the commercially available sky-imager retrievals. Thus, the application of automatic digital image processing techniques on sky images is a useful method to complement, or even replace, traditional human observations of sky cover and, potentially, cloud type. Additionally, the possibilities for inferring other cloud
Keywords	irradiance; skies; surface; simulations
ANZSRC Field of Research 2020	370199. Atmospheric sciences not elsewhere classified
	519999. Other physical sciences not elsewhere classified
	370107. Cloud physics
Byline Affiliations	Pacific Northwest National Laboratory, United States
	Department of Biological and Physical Sciences
	University of Girona, Spain

Permalink -

https://research.usq.edu.au/item/9y383/retrieving-cloud-characteristics-from-ground-based-daytime-color-all-sky-images

Download files

Published Version

	Long_Sabburg_Calbo_Pages_JAOT_v23n5_PV.pdf
File access level: Anyone

Export as

Related outputs

Measurement of cloud angle for enhanced UVB at the Earth's surface

Sabburg, Jeff and Wong, Joe. 1999. "Measurement of cloud angle for enhanced UVB at the Earth's surface." Wong, Joe and Parisi, Alfio (ed.) 2nd Internet Conference on Photochemistry and Photobiology: Protection Against the Hazards of UVR 1999. 18 Jan - 05 Feb 1999

Understanding the UVA environment at a sub-tropical site and its consequent impact on human UVA exposure

Kimlin, Michael G., Parisi, Alfio, Sabburg, Jeff and Downs, Nathan. 2002. "Understanding the UVA environment at a sub-tropical site and its consequent impact on human UVA exposure." Photochemical and Photobiological Sciences. 1 (7), pp. 478-482. https://doi.org/10.1039/b200844k

Comparisons of corrected daily-integrated erythermal UVR data from the U.S. EPA/UGA network of Brewer spectroradiometers with model and TOMS-inferred data

Sabburg, Jeff, Rives, J. E., Meltzer, R. S., Taylor, T., Schmalzle, G. B., Zheng, S., Huang, N., Wilson, A. and Udelhofen, P. M.. 2002. "Comparisons of corrected daily-integrated erythermal UVR data from the U.S. EPA/UGA network of Brewer spectroradiometers with model and TOMS-inferred data." Journal of Geophysical Research. 107, pp. 4676-4685. https://doi.org/10.1029/2001JD001565

Preliminary UV, ozone and cloud comparison between southern and northern hemisphere, sub-tropical latitude sites during 1996/1997

Sabburg, J., Parisi, A., Wong, J. and Meldrum, L.. 2001. "Preliminary UV, ozone and cloud comparison between southern and northern hemisphere, sub-tropical latitude sites during 1996/1997." Journal of Atmospheric and Solar: Terrestrial Physics. 63 (15), pp. 1623-1629. https://doi.org/10.1016/S1364-6826(01)00043-8

Effect of cloud on UVA and exposure to humans

Sabburg, J., Parisi, A. V. and Wong, J. C. F.. 2001. "Effect of cloud on UVA and exposure to humans." Photochemistry and Photobiology. 74 (3), pp. 412-416. https://doi.org/10.1562/0031-8655(2001)0740412EOCOUA2.0.CO2

Five years of cloud enhanced surface UV radiation measurements at two sites (in the Northern and Southern Hemispheres)

Sabburg, J. and Calbo, J.. 2009. "Five years of cloud enhanced surface UV radiation measurements at two sites (in the Northern and Southern Hemispheres)." Atmospheric Research. 93 (4), pp. 902-912. https://doi.org/10.1016/j.atmosres.2009.05.003

Comparison of Brewer spectrophotometer ultraviolet data from similar latitudes in the northern and southern hemisphere

Kimlin, M. G., Sabburg, J. M., Parisi, A. V. and Meltzer, R. S.. 2003. "Comparison of Brewer spectrophotometer ultraviolet data from similar latitudes in the northern and southern hemisphere." Journal of Atmospheric and Solar: Terrestrial Physics. 65 (16), pp. 1401-1410. https://doi.org/10.1016/j.jastp.2003.09.003

Feature extraction from whole-sky ground-based images for cloud-type recognition

Calbo, Josep and Sabburg, Jeff. 2008. "Feature extraction from whole-sky ground-based images for cloud-type recognition." Journal of Atmospheric and Oceanic Technology. 25 (1), pp. 3-14. https://doi.org/10.1175/2007JTECHA959.1

Cloud observations for the statistical evaluation of the UV index at Toowoomba, Australia

Parisi, A. V., Sabburg, J., Turner, J. and Dunn, P. K.. 2008. "Cloud observations for the statistical evaluation of the UV index at Toowoomba, Australia." International Journal of Biometeorology: the description, causes, and implications of climatic change. 52 (3), pp. 159-166. https://doi.org/10.1007/s00484-007-0106-7

Evaluation of a sky/cloud formula for estimating UV-B irradiance under cloudy skies

Sabburg, J. and Wong, J.. 2000. "Evaluation of a sky/cloud formula for estimating UV-B irradiance under cloudy skies." Journal of Geophysical Research. 105 (D24), pp. 685-691. https://doi.org/10.1029/2000JD900530

The effect of clouds on enhancing UVB irradiance at the earth's surface: a one year study

Sabburg, J. and Wong, J.. 2000. "The effect of clouds on enhancing UVB irradiance at the earth's surface: a one year study." Geophysical Research Letters. 27 (20), pp. 3337-3340. https://doi.org/10.1029/2000GL011683

Evaluation of a ground-based sky camera system for use in surface irradiance measurement

Sabburg, Jeff and Wong, Joe. 1999. "Evaluation of a ground-based sky camera system for use in surface irradiance measurement." Journal of Atmospheric and Oceanic Technology. 16 (6), pp. 752-759. https://doi.org/10.1175/1520-0426(1999)016<0752:EOAGBS>2.0.CO;2

Comparisons of corrected daily integrated erythemal UVR from the U.S. EPA/UGA network of Brewer spectroradiometers with model and satellite data

Sabburg, Jeff, Kimlin, Michael G., Rives, John E., Meltzer, Richard S., Taylor, Thomas E., Schmalzle, Gina, Zheng, Sherry, Huang, Nancy, Wilson, Andrew R. and Udelhofen, Petra M.. 2002. "Comparisons of corrected daily integrated erythemal UVR from the U.S. EPA/UGA network of Brewer spectroradiometers with model and satellite data." Slusser, J. R., Herman, J. R. and Gao, W. (ed.) Ultraviolet Ground and Space-based Measurements, Models, and Effects (2002). San Diego, United States 30 Jul - 01 Aug 2001 Bellingham, WA. United States. https://doi.org/10.1117/12.452955

Physics concepts: Engineering PBL at USQ

Sabburg, J., Fahey, P. and Brodie, L.. 2006. "Physics concepts: Engineering PBL at USQ." Sang, Robert and Dobson, John (ed.) Australian Institute of Physics (AIP) 17th National Congress 2006. Brisbane, Australia 03 - 08 Dec 2006 Brisbane,Australia.

Cloud effects on evaporation at a sub-tropical site

Young, A. R. and Sabburg, J.. 2006. "Cloud effects on evaporation at a sub-tropical site." Sang, Robert and Dobson, John (ed.) Australian Institute of Physics (AIP) 17th National Congress 2006. Brisbane, Australia 03 - 08 Dec 2006 Brisbane, Australia.

Improved ground based sky camera for studies of enhanced spectral UV irradiance

Sabburg, J. and Long, C. N.. 2004. "Improved ground based sky camera for studies of enhanced spectral UV irradiance." EGU 1: 1st European GeoSciences Union Genral Assembly. Nice, France 25 - 30 Apr 2004 Germany.

Validation of improved sky camera algorithm for measurement of cloud around the Sun

Sabburg, Jeff and Wong, Joe. 1999. "Validation of improved sky camera algorithm for measurement of cloud around the Sun." Wong, Joe and Parisi, Alfio (ed.) 2nd Internet Conference on Photochemistry and Photobiology: Protection Against the Hazards of UVR 1999. 18 Jan - 05 Feb 1999

Development of a Sun centred sky camera for use in UV measurements

Sabburg, J. and Wong, J.. 1997. "Development of a Sun centred sky camera for use in UV measurements." Pan, Heping, Brooks, Mike, McMichael, Daniel and Newsam, Garry (ed.) International Workshop on Image Analysis and Information Fusion (IAIF 1997). Adelaide, Australia 06 - 08 Nov 1997 Australia.

Improved sky imaging for studies of enhanced UV irradiance

Sabburg, J. M. and Long, C. N.. 2004. "Improved sky imaging for studies of enhanced UV irradiance." Atmospheric Chemistry and Physics. 4 (11-12), pp. 2543-2552.

Spectral dependency of cloud enhanced UV irradiance

Sabburg, Jeff and Parisi, Alfio. 2006. "Spectral dependency of cloud enhanced UV irradiance." Atmospheric Research. 81 (3), pp. 206-214.

Enhanced spectral UV irradiance: a one year preliminary study

Sabburg, Jeff, Parisi, Alfio and Kimlin, Michael G.. 2003. "Enhanced spectral UV irradiance: a one year preliminary study." Atmospheric Research. 66 (4), pp. 261-272.

Ozone, cloud, solar and UV-B levels at a low pollution, southern hemisphere, sub-tropical site for winter/spring 1995

Sabburg, J., Parisi, A. V. and Wong, J. C. F.. 1997. "Ozone, cloud, solar and UV-B levels at a low pollution, southern hemisphere, sub-tropical site for winter/spring 1995." Professor Yogesh K Dwivedi. 20 (4), pp. 198-202.

Scattered and filtered solar UV measurements

Parisi, Alfio, Sabburg, Jeff and Kimlin, Michael G.. 2004. Scattered and filtered solar UV measurements. Dordrecht. Kluwer Academic Publishers.

Comparison of biologically damaging spectral solar ultraviolet radiation at a southern hemisphere sub-tropical site

Parisi, Alfio, Sabburg, Jeff and Kimlin, Michael G.. 2003. "Comparison of biologically damaging spectral solar ultraviolet radiation at a southern hemisphere sub-tropical site." Physics in Medicine and Biology. 48 (8), pp. N121-N129. https://doi.org/10.1088/0031-9155/48/8/401

Optical properties of poly (2,6-Dimethyl-1,4-Phenylene Oxide) film and its potential for a long-term solar ultraviolet dosimeter

Lester, Rick A., Parisi, Alfio, Kimlin, Michael G. and Sabburg, Jeff. 2003. "Optical properties of poly (2,6-Dimethyl-1,4-Phenylene Oxide) film and its potential for a long-term solar ultraviolet dosimeter." Physics in Medicine and Biology. 48, pp. 3685-3698.

Measured and modelled contributions to UV exposures by the albedo of surfaces in an urban environment

Parisi, Alfio, Sabburg, Jeff, Kimlin, Michael G. and Downs, Nathan. 2003. "Measured and modelled contributions to UV exposures by the albedo of surfaces in an urban environment." Theoretical and Applied Climatology. 76 (3-4), pp. 181-188. https://doi.org/10.1007/s00704-003-0012-9