dc.identifier.uri |
http://dx.doi.org/10.15488/10468 |
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dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/10544 |
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dc.contributor.author |
Rowe, Penny M.
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dc.contributor.author |
Cordero, Raul R.
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dc.contributor.author |
Warren, Stephen G.
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dc.contributor.author |
Stewart, Emily
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dc.contributor.author |
Doherty, Sarah J.
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dc.contributor.author |
Pankow, Alec
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dc.contributor.author |
Schrempf, Michael
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dc.contributor.author |
Casassa, Gino
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dc.contributor.author |
Carrasco, Jorge
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dc.contributor.author |
Pizarro, Jaime
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dc.contributor.author |
MacDonell, Shelley.
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dc.contributor.author |
Damiani, Alessandro
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dc.contributor.author |
Lambert, Fabrice
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dc.contributor.author |
Rondanelli, Roberto
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dc.contributor.author |
Huneeus, Nicolas
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dc.contributor.author |
Fernandoy, Francisco
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dc.contributor.author |
Neshyba, Steven
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dc.date.accessioned |
2021-03-02T10:17:48Z |
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dc.date.available |
2021-03-02T10:17:48Z |
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dc.date.issued |
2019 |
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dc.identifier.citation |
Rowe, P.M.; Cordero, R.R.; Warren, St.G. et al.: Black carbon and other light-absorbing impurities in snow in the Chilean Andes. In: Scientific Reports 9 (2019), Nr. 1, 4008. DOI: https://doi.org/10.1038/s41598-019-39312-0 |
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dc.description.abstract |
Vertical profiles of black carbon (BC) and other light-absorbing impurities were measured in seasonal snow and permanent snowfields in the Chilean Andes during Austral winters 2015 and 2016, at 22 sites between latitudes 18°S and 41°S. The samples were analyzed for spectrally-resolved visible light absorption. For surface snow, the average mass mixing ratio of BC was 15 ng/g in northern Chile (18–33°S), 28 ng/g near Santiago (a major city near latitude 33°S, where urban pollution plays a significant role), and 13 ng/g in southern Chile (33–41°S). The regional average vertically-integrated loading of BC was 207 µg/m 2 in the north, 780 µg/m 2 near Santiago, and 2500 µg/m 2 in the south, where the snow season was longer and the snow was deeper. For samples collected at locations where there had been no new snowfall for a week or more, the BC concentration in surface snow was high (~10–100 ng/g) and the sub-surface snow was comparatively clean, indicating the dominance of dry deposition of BC. Mean albedo reductions due to light-absorbing impurities were 0.0150, 0.0160, and 0.0077 for snow grain radii of 100 µm for northern Chile, the region near Santiago, and southern Chile; respective mean radiative forcings for the winter months were 2.8, 1.4, and 0.6 W/m 2 . In northern Chile, our measurements indicate that light-absorption by impurities in snow was dominated by dust rather than BC. © 2019, The Author(s). |
eng |
dc.language.iso |
eng |
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dc.publisher |
London : Nature Publishing Group |
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dc.relation.ispartofseries |
Scientific Reports 9 (2019), Nr. 1 |
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dc.rights |
CC BY 4.0 Unported |
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dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
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dc.subject |
Black carbon |
eng |
dc.subject |
Chilean Andes |
eng |
dc.subject |
Chile |
eng |
dc.subject.ddc |
500 | Naturwissenschaften
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ger |
dc.subject.ddc |
600 | Technik
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ger |
dc.title |
Black carbon and other light-absorbing impurities in snow in the Chilean Andes |
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dc.type |
Article |
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dc.type |
Text |
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dc.relation.essn |
2045-2322 |
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dc.relation.doi |
https://doi.org/10.1038/s41598-019-39312-0 |
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dc.bibliographicCitation.issue |
1 |
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dc.bibliographicCitation.volume |
9 |
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dc.bibliographicCitation.firstPage |
4008 |
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dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
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