[{"@context":"http:\/\/schema.org\/","@type":"Dataset","identifier":"https:\/\/doi.org\/10.17043\/oden-ascos-2008-aerosol-stratification-1","@id":"https:\/\/doi.org\/10.17043\/oden-ascos-2008-aerosol-stratification-1","name":"Vertical stratification of submicrometer aerosol particles measured during the high-Arctic ASCOS expedition 2008","description":"The atmospheric thermodynamic structure and aerosol particle concentrations, in several size ranges, across a multitude of surface conditions over the Arctic Ocean pack ice, was profiled using a helicopter based onboard Swedish icebreaker Oden during the Arctic Summer Cloud Ocean Study (ASCOS) expedition in summer 2008.\r\n\r\nAerosol sources are known to be few in summer high Arctic while the cloud cover is generally at a maximum during this season. Until now, a large deficiency has been an inability to relate Arctic aerosol and cloud properties because of the difficulties in performing in situ measurements within the harsh Arctic environment.\r\n\r\nThe ultrafine particle (diameters between 3\u2060\u200a\u2013\u200a\u206015 nm) concentrations were typically a few hundred per cm\u00b3, but reached as high as 1500 cm\u207b\u00b3 and were often found within the shallow Arctic boundary layer, while occasional elevated concentrations were measured at higher altitudes. The accumulation mode particle concentrations were generally less than 1 cm\u207b\u00b3 within the well-mixed boundary layer. Such low levels can be explained by the presence of a moist boundary layer combined with in general weak local sources. In addition, largest accumulation mode numbers were found at and above former cloud tops.\r\n","url":"http:\/\/bolin.su.se\/data\/oden-ascos-2008-aerosol-stratification-1","keywords":["Atmosphere","Aerosols","Aerosol vertical profiling","High Arctic","Summer","ASCOS","Arctic boundary layer","Arctic clouds","Icebreaker Oden","Earth science > Atmosphere"],"creator":{"@type":"Person","name":"Caroline Leck, Joseph Sedlar, Erik Swietlicki, Staffan Sj\u00f6gren, Barbara Brooks, Sarah Norris"},"citation":"Kupiszewski P, Leck C, Tjernstr\u00f6m M, Sjogren S, Sedlar J, Graus M, M\u00fcller M, Brooks B, Swietlicki E, Norris S, Hansel A (2013) Vertical profiling of aerosol particles and tracer gases over the central Arctic Ocean during summer. Atm Chem Phys 13: 12405\u2060\u200a\u2013\u200a\u206012431. doi:10.5194\/acp-13-12405-2013","license":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","isAccessibleForFree":true,"includedInDataCatalog":{"@type":"DataCatalog","name":"Bolin Centre for Climate Research, Stockholm University","identifier":"https:\/\/bolin.su.se\/data\/","url":"https:\/\/bolin.su.se\/data\/"},"distribution":{"@type":"DataDownload","encodingFormat":"application\/zip","contentUrl":"https:\/\/bolin.su.se\/data\/uploads\/oden-ascos-2008-aerosol-stratification-1.zip"},"size":80875337,"isBasedOn":"Kupiszewski P, Leck C, Tjernstr\u00f6m M, Sjogren S, Sedlar J, Graus M, M\u00fcller M, Brooks B, Swietlicki E, Norris S, Hansel A (2013) Vertical profiling of aerosol particles and tracer gases over the central Arctic Ocean during summer. Atm Chem Phys 13: 12405\u2060\u200a\u2013\u200a\u206012431. doi:10.5194\/acp-13-12405-2013","temporalCoverage":"2008-08-10\/2008-08-10"}]