Tilt error in cryospheric surface radiation measurements at high latitudes: a model study
We have evaluated the magnitude and makeup of error in cryospheric radiation observations due to small sensor misalignment in in situ measurements of solar irradiance. This error is examined through simulation of diffuse and direct irradiance arriving at a detector with a cosine-response fore optic....
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00013834 2023-05-15T18:32:32+02:00 Tilt error in cryospheric surface radiation measurements at high latitudes: a model study Bogren, Wiley Steven Burkhart, John Faulkner Kylling, Arve 2016-03 electronic https://doi.org/10.5194/tc-10-613-2016 https://noa.gwlb.de/receive/cop_mods_00013834 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013790/tc-10-613-2016.pdf https://tc.copernicus.org/articles/10/613/2016/tc-10-613-2016.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-10-613-2016 https://noa.gwlb.de/receive/cop_mods_00013834 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013790/tc-10-613-2016.pdf https://tc.copernicus.org/articles/10/613/2016/tc-10-613-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/tc-10-613-2016 2022-02-08T22:55:25Z We have evaluated the magnitude and makeup of error in cryospheric radiation observations due to small sensor misalignment in in situ measurements of solar irradiance. This error is examined through simulation of diffuse and direct irradiance arriving at a detector with a cosine-response fore optic. Emphasis is placed on assessing total error over the solar shortwave spectrum from 250 to 4500 nm, as well as supporting investigation over other relevant shortwave spectral ranges. The total measurement error introduced by sensor tilt is dominated by the direct component. For a typical high-latitude albedo measurement with a solar zenith angle of 60°, a sensor tilted by 1, 3, and 5° can, respectively introduce up to 2.7, 8.1, and 13.5 % error into the measured irradiance and similar errors in the derived albedo. Depending on the daily range of solar azimuth and zenith angles, significant measurement error can persist also in integrated daily irradiance and albedo. Simulations including a cloud layer demonstrate decreasing tilt error with increasing cloud optical depth. Article in Journal/Newspaper The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 10 2 613 622 |
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article Verlagsveröffentlichung Bogren, Wiley Steven Burkhart, John Faulkner Kylling, Arve Tilt error in cryospheric surface radiation measurements at high latitudes: a model study |
topic_facet |
article Verlagsveröffentlichung |
description |
We have evaluated the magnitude and makeup of error in cryospheric radiation observations due to small sensor misalignment in in situ measurements of solar irradiance. This error is examined through simulation of diffuse and direct irradiance arriving at a detector with a cosine-response fore optic. Emphasis is placed on assessing total error over the solar shortwave spectrum from 250 to 4500 nm, as well as supporting investigation over other relevant shortwave spectral ranges. The total measurement error introduced by sensor tilt is dominated by the direct component. For a typical high-latitude albedo measurement with a solar zenith angle of 60°, a sensor tilted by 1, 3, and 5° can, respectively introduce up to 2.7, 8.1, and 13.5 % error into the measured irradiance and similar errors in the derived albedo. Depending on the daily range of solar azimuth and zenith angles, significant measurement error can persist also in integrated daily irradiance and albedo. Simulations including a cloud layer demonstrate decreasing tilt error with increasing cloud optical depth. |
format |
Article in Journal/Newspaper |
author |
Bogren, Wiley Steven Burkhart, John Faulkner Kylling, Arve |
author_facet |
Bogren, Wiley Steven Burkhart, John Faulkner Kylling, Arve |
author_sort |
Bogren, Wiley Steven |
title |
Tilt error in cryospheric surface radiation measurements at high latitudes: a model study |
title_short |
Tilt error in cryospheric surface radiation measurements at high latitudes: a model study |
title_full |
Tilt error in cryospheric surface radiation measurements at high latitudes: a model study |
title_fullStr |
Tilt error in cryospheric surface radiation measurements at high latitudes: a model study |
title_full_unstemmed |
Tilt error in cryospheric surface radiation measurements at high latitudes: a model study |
title_sort |
tilt error in cryospheric surface radiation measurements at high latitudes: a model study |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-613-2016 https://noa.gwlb.de/receive/cop_mods_00013834 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013790/tc-10-613-2016.pdf https://tc.copernicus.org/articles/10/613/2016/tc-10-613-2016.pdf |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-10-613-2016 https://noa.gwlb.de/receive/cop_mods_00013834 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013790/tc-10-613-2016.pdf https://tc.copernicus.org/articles/10/613/2016/tc-10-613-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-10-613-2016 |
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The Cryosphere |
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10 |
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2 |
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613 |
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622 |
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1766216640681213952 |