From the Ground Up II: Sky Glow and Near-Ground Artificial Light Propagation in Flagstaff, Arizona
We present panoramic sky brightness measures in the Johnson V V band made at the US Naval Observatory Flagstaff Station. We find that these measures show much less sky glow from Flagstaff than expected using the total light output and unshielded fraction determined recently by Luginbuhl et al. and G...
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| Veröffentlicht in: | Publications of the Astronomical Society of the Pacific 2009-02, Vol.121 (876), p.204-212 |
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| container_title | Publications of the Astronomical Society of the Pacific |
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| creator | Luginbuhl, Christian B. Duriscoe, Dan M. Moore, Chadwick W. Richman, Angela Lockwood, G. Wesley Davis, Donald R. |
| description | We present panoramic sky brightness measures in the Johnson
V
V
band made at the US Naval Observatory Flagstaff Station. We find that these measures show much less sky glow from Flagstaff than expected using the total light output and unshielded fraction determined recently by Luginbuhl et al. and Garstang’s 1991 modeling approach. We suggest the difference arises principally from the diminution of upward-directed light after emission from light fixtures and reflection from the ground due to interaction with structures and vegetation. This interaction not only reduces the effective albedo, it also disproportionately reduces flux emitted upward at angles near the horizontal. We explore the size and consequences of this factor in light pollution modeling, and propose a modified upward angular distribution function to account for this effect. |
| doi_str_mv | 10.1086/597626 |
| format | Article |
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V
V
band made at the US Naval Observatory Flagstaff Station. We find that these measures show much less sky glow from Flagstaff than expected using the total light output and unshielded fraction determined recently by Luginbuhl et al. and Garstang’s 1991 modeling approach. We suggest the difference arises principally from the diminution of upward-directed light after emission from light fixtures and reflection from the ground due to interaction with structures and vegetation. This interaction not only reduces the effective albedo, it also disproportionately reduces flux emitted upward at angles near the horizontal. We explore the size and consequences of this factor in light pollution modeling, and propose a modified upward angular distribution function to account for this effect.</description><identifier>ISSN: 0004-6280</identifier><identifier>EISSN: 1538-3873</identifier><identifier>DOI: 10.1086/597626</identifier><identifier>CODEN: PASPAU</identifier><language>eng</language><publisher>Chicago, IL: University of Chicago Press</publisher><subject>Albedo ; Angular distribution ; Astronomy ; Azimuth ; Cities ; Earth, ocean, space ; Exact sciences and technology ; Horizon coordinate system ; Lighting ; Modeling ; Optical reflection ; Sky brightness ; Zenith</subject><ispartof>Publications of the Astronomical Society of the Pacific, 2009-02, Vol.121 (876), p.204-212</ispartof><rights>2009. The Astronomical Society of the Pacific. All rights reserved. Printed in U.S.A.</rights><rights>2009 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c379t-e63efd5a96c990f8d4c2d35b8cb127459fcc54c338a48730eec40d1a5d84f7b43</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,803,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=21327261$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Luginbuhl, Christian B.</creatorcontrib><creatorcontrib>Duriscoe, Dan M.</creatorcontrib><creatorcontrib>Moore, Chadwick W.</creatorcontrib><creatorcontrib>Richman, Angela</creatorcontrib><creatorcontrib>Lockwood, G. Wesley</creatorcontrib><creatorcontrib>Davis, Donald R.</creatorcontrib><title>From the Ground Up II: Sky Glow and Near-Ground Artificial Light Propagation in Flagstaff, Arizona</title><title>Publications of the Astronomical Society of the Pacific</title><description>We present panoramic sky brightness measures in the Johnson
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V
V
band made at the US Naval Observatory Flagstaff Station. We find that these measures show much less sky glow from Flagstaff than expected using the total light output and unshielded fraction determined recently by Luginbuhl et al. and Garstang’s 1991 modeling approach. We suggest the difference arises principally from the diminution of upward-directed light after emission from light fixtures and reflection from the ground due to interaction with structures and vegetation. This interaction not only reduces the effective albedo, it also disproportionately reduces flux emitted upward at angles near the horizontal. We explore the size and consequences of this factor in light pollution modeling, and propose a modified upward angular distribution function to account for this effect.</abstract><cop>Chicago, IL</cop><pub>University of Chicago Press</pub><doi>10.1086/597626</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Publications of the Astronomical Society of the Pacific, 2009-02, Vol.121 (876), p.204-212 |
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| source | IOP Publishing Journals; JSTOR Archive Collection A-Z Listing; EZB-FREE-00999 freely available EZB journals; Institute of Physics (IOP) Journals - HEAL-Link; Alma/SFX Local Collection |
| subjects | Albedo Angular distribution Astronomy Azimuth Cities Earth, ocean, space Exact sciences and technology Horizon coordinate system Lighting Modeling Optical reflection Sky brightness Zenith |
| title | From the Ground Up II: Sky Glow and Near-Ground Artificial Light Propagation in Flagstaff, Arizona |
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