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dc.contributor.author
Weihs, Philipp
dc.contributor.author
Wagner, J.E.
dc.contributor.author
Schreier, Stefan F.
dc.contributor.author
Rieder, H.E.
dc.contributor.author
Angelini, Federico
dc.contributor.author
Blumthaler, Mario
dc.contributor.author
Fitzka, Michael
dc.contributor.author
Gobbi, Gian P.
dc.contributor.author
Kift, Richard
dc.contributor.author
Kreuter, Axel
dc.contributor.author
Simic, Stana
dc.contributor.author
Webb, Ann R.
dc.date.accessioned
2018-10-26T13:43:49Z
dc.date.available
2017-06-09T20:13:10Z
dc.date.available
2018-10-26T13:43:49Z
dc.date.issued
2012
dc.identifier.issn
1680-7375
dc.identifier.issn
1680-7367
dc.identifier.other
10.5194/acp-12-2297-2012
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/47423
dc.identifier.doi
10.3929/ethz-b-000047423
dc.description.abstract
The aim of this study is to investigate the influence of the spatial resolution of a digital elevation map (DEM) on the three-dimensional (3-D) radiative transfer performance for both spectral ultraviolet (UV) irradiance and actinic flux at 305 nm. Model simulations were performed for clear sky conditions for three case studies: the first and second one using three sites in the Innsbruck area and the third one using three sites at the Sonnblick observatory and surrounding area. It was found that the DEM resolution may change the altitude at some locations by up to 500 m, resulting in changes in the sky obscured by the horizon of up to 15%. The geographical distribution of UV irradiance and actinic flux shows that with larger pixel size, uncertainties in UV irradiance and actinic flux determination of up to 100% are possible. These large changes in incident irradiance and actinic flux with changing pixel size are strongly connected to shading effects. The effect of the DEM pixel size on irradiance and actinic flux was studied at the six locations, and it was found that significant increases in irradiance and actinic flux with increasing DEM pixel size occurred at one valley location at high solar zenith angles in the Innsbruck area as well as for one steep valley location in the Sonnblick area. This increase in irradiance and actinic flux with increasing DEM resolution is most likely to be connected to shading effects affecting the reflections from the surroundings.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
The influence of the spatial resolution of topographic input data on the accuracy of 3-D UV actinic flux and irradiance calculations
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2012-03-01
ethz.journal.title
Atmospheric Chemistry and Physics
ethz.journal.volume
12
en_US
ethz.journal.issue
5
en_US
ethz.journal.abbreviated
Atmos. chem. phys.
ethz.pages.start
2297
en_US
ethz.pages.end
2312
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
004294181
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-09T20:13:54Z
ethz.source
ECIT
ethz.identifier.importid
imp59364f13bd90421264
ethz.ecitpid
pub:78083
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-14T14:19:25Z
ethz.rosetta.lastUpdated
2023-02-06T16:05:43Z
ethz.rosetta.versionExported
true
ethz.COinS
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