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Satellite retrieved cloud optical thickness sensitive to surface wind speed in the subarctic marine boundary layer
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
2010 (English)In: Environmental research letters, ISSN 1748-9326, Vol. 5, no 3, 034002- p.Article in journal (Refereed) Published
Abstract [en]

The optical and microphysical properties of low level marine clouds, presented over the Norwegian Sea and Barents Sea, have been investigated for the period 2000-2006. The air masses were transported for more or less seven days over the warmer North Atlantic before they arrived at the area investigated. The main focus in this study is on investigating the relationship between cloud optical thickness (COT) and surface wind speed (U-10 m) using satellite retrievals in combination with operational meteorological data. A relatively strong correlation (R-2 = 0.97) is obtained for wind speeds up to 12 m s(-1), in air masses that were probably to a major degree influenced by wind shears and to a minor degree by buoyancy. The relationship (U-2.5) is also in between those most commonly found in the literature for water vapor (similar to U-1) and sea salt (similar to U-3.4). The present results highlight the magnitude of marine sea-spray influence on COT and their global climatic importance.

Place, publisher, year, edition, pages
2010. Vol. 5, no 3, 034002- p.
Keyword [en]
sea salt, surface wind speed, cloud optical thickness
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:su:diva-51739DOI: 10.1088/1748-9326/5/3/034002ISI: 000282273700003OAI: oai:DiVA.org:su-51739DiVA: diva2:386098
Note
authorCount :1Available from: 2011-01-12 Created: 2011-01-12 Last updated: 2011-01-12Bibliographically approved

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