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Atmospheric conditi...
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Sotiropoulou, GeorgiaStockholms universitet,Meteorologiska institutionen (MISU)
(author)
Atmospheric conditions during the Arctic Clouds in Summer Experiment (ACSE) : Contrasting open-water and sea-ice surfaces during melt and freeze-up seasons
- Article/chapterEnglish2016
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LIBRIS-ID:oai:DiVA.org:su-134342
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-134342URI
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https://doi.org/10.1175/JCLI-D-16-0211.1DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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The Arctic Clouds in Summer Experiment (ACSE) was conducted during summer and early autumn 2014, providing a detailed view of the seasonal transition from ice melt into freeze-up. Measurements were taken over both ice-free and ice-covered surfaces, near the ice edge, offering insight to the role of the surface state in shaping the atmospheric conditions. The initiation of the autumn freeze-up was related to a change in air mass, rather than to changes in solar radiation alone; the lower atmosphere cooled abruptly leading to a surface heat loss. During melt season, strong surface inversions persisted over the ice, while elevated inversions were more frequent over open water. These differences disappeared during autumn freeze-up, when elevated inversions persisted over both ice-free and ice-covered conditions. These results are in contrast to previous studies that found a well-mixed boundary layer persisting in summer and an increased frequency of surface-based inversions in autumn, suggesting that our knowledge derived from measurements taken within the pan-Arctic area and on the central ice-pack does not necessarily apply closer to the ice-edge. This study offers an insight to the atmospheric processes that occur during a crucial period of the year; understanding and accurately modeling these processes is essential for the improvement of ice-extent predictions and future Arctic climate projections.
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Tjernström, MichaelStockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)tjern
(author)
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Sedlar, JosephStockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)jose7536
(author)
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Achtert, Peggy
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Brooks, Barbara J.
(author)
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Brooks, Ian M.
(author)
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Persson, P. Ola G.
(author)
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Prytherch, John
(author)
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Salisbury, Dominic J.
(author)
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Shupe, Matthew D.
(author)
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Johnston, Paul E.
(author)
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Wolfe, Dan
(author)
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Stockholms universitetMeteorologiska institutionen (MISU)
(creator_code:org_t)
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In:Journal of Climate29:24, s. 8721-87440894-87551520-0442
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Achtert, Peggy
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Persson, P. Ola ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Stockholm University