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Observations of Aerosol, Cloud, Turbulence, and Radiation Properties at the Top of the Marine Boundary Layer over the Eastern North Atlantic Ocean: The ACORES Campaign

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cris.lastimport.scopus2024-02-12T19:53:45Z
dc.abstract.enWe report on the Azores Stratocumulus Measurements of Radiation, Turbulence and Aerosols (ACORES) campaign, which took place around Graciosa and Pico Islands/Azores in July 2017. The main objective was to investigate the vertical distribution of aerosol particles, stratocumulus microphysical and radiative properties, and turbulence parameters in the eastern North Atlantic. The vertical exchange of mass, momentum, and energy between the free troposphere (FT) and the cloudy marine boundary layer (MBL) was explored over a range of scales from submeters to kilometers. To cover these spatial scales with appropriate measurements, helicopter-borne observations with unprecedented high resolution were realized using the Airborne Cloud Turbulence Observation System (ACTOS) and Spectral Modular Airborne Radiation Measurement System–Helicopter-Borne Observations (SMART-HELIOS) instrumental payloads. The helicopter-borne observations were combined with ground-based aerosol measurements collected at two continuously running field stations on Pico Mountain (2,225 m above sea level, in the FT), and at the Atmospheric Radiation Measurement (ARM) station on Graciosa (at sea level). First findings from the ACORES observations we are discussing in the paper are as follows: (i) we have observed a high variability of the turbulent cloud-top structure on horizontal scales below 100 m with local temperature gradients of up to 4 K over less than 1 m vertical distance, (ii) we have collected strictly collocated radiation measurements supporting the relevance of small-scale processes by revealing significant inhomogeneities in cloud-top brightness temperature to scales well below 100 m, and (iii) we have concluded that aerosol properties are completely different in the MBL and FT with often-complex stratification and frequently observed burst-like new particle formation.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorSchum, Simeon
dc.contributor.authorAllwayin, Nithin
dc.contributor.authorWehner, Birgit
dc.contributor.authorEgerer, Ulrike
dc.contributor.authorChevalier, Karine
dc.contributor.authorHenning, Silvia
dc.contributor.authorSzodry, Kai-Erik
dc.contributor.authorKollias, Pavlos
dc.contributor.authorLuke, Edward P.
dc.contributor.authorMellado, Juan Pedro
dc.contributor.authorWood, Robert
dc.contributor.authorWendisch, Manfred
dc.contributor.authorEhrlich, André
dc.contributor.authorRoberts, Greg
dc.contributor.authorFialho, Paulo
dc.contributor.authorKumala, Wojciech
dc.contributor.authorSiebert, Holger
dc.contributor.authorNowak, Jakub L.
dc.contributor.authorMazzoleni, Lynn
dc.contributor.authorCzyzewska, Dominika
dc.contributor.authorKarpinska, Katarzyna
dc.contributor.authorMalinowski, Szymon
dc.contributor.authorMazzoleni, Claudio
dc.contributor.authorShaw, Raymond A.
dc.contributor.authorGottschalk, Matthias
dc.contributor.authorWelz, Oliver
dc.contributor.authorLückerath, Janine
dc.contributor.authorLauermann, Felix
dc.contributor.authorWeinhold, Kay
dc.date.accessioned2024-01-25T14:07:42Z
dc.date.available2024-01-25T14:07:42Z
dc.date.issued2021
dc.description.financePublikacja bezkosztowa
dc.description.number1
dc.description.volume102
dc.identifier.doi10.1175/BAMS-D-19-0191.1
dc.identifier.issn0003-0007
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/114178
dc.identifier.weblinkhttps://journals.ametsoc.org/view/journals/bams/102/1/BAMS-D-19-0191.1.xml
dc.languageeng
dc.pbn.affiliationearth and related environmental sciences
dc.relation.ispartofBulletin of the American Meteorological Society
dc.relation.pagesE123-E147
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enAerosols
dc.subject.enCloud radiative effects
dc.subject.enSmall scale processes
dc.subject.enAircraft observations
dc.titleObservations of Aerosol, Cloud, Turbulence, and Radiation Properties at the Top of the Marine Boundary Layer over the Eastern North Atlantic Ocean: The ACORES Campaign
dc.typeJournalArticle
dspace.entity.typePublication