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Profiles of cloud condensation nuclei, dust mass concentration, and ice-nucleating-particle-relevant aerosol properties in the Saharan Air Layer over Barbados from polarization lidar and airborne in situ measurements

Haarig, Moritz und Walser, Adrian und Ansmann, Albert und Dollner, Maximilian und Althausen, Dietrich und Sauer, Daniel und Farrell, David und Weinzierl, Bernadett (2019) Profiles of cloud condensation nuclei, dust mass concentration, and ice-nucleating-particle-relevant aerosol properties in the Saharan Air Layer over Barbados from polarization lidar and airborne in situ measurements. Atmospheric Chemistry and Physics (ACP) (19), Seiten 13773-13788. Copernicus Publications. doi: 10.5194/acp-19-13773-2019. ISSN 1680-7316.

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Offizielle URL: https://doi.org/10.5194/acp-19-13773-2019

Kurzfassung

The present study aims to evaluate lidar retrievals of cloud-relevant aerosol properties by using polarization lidar and coincident airborne in situ measurements in the Saharan Air Layer (SAL) over the Barbados region. Vertical profiles of the number concentration of cloud condensation nuclei (CCN), large particles (diameter d>500 nm), surface area, mass, and ice-nucleating particle (INP) concentration are derived from the lidar measurements and compared with CCN concentrations and the INP-relevant aerosol properties measured in situ with aircraft. The measurements were performed in the framework of the Saharan Aerosol Long-range Transport and Aerosol-Cloud-Interaction Experiment (SALTRACE) in summer 2013. The CCN number concentrations derived from lidar observations were up to a factor of 2 higher than the ones measured in situ aboard the research aircraft Falcon. Possible reasons for the difference are discussed. The number concentration of particles with a dry radius of more than 250 nm and the surface-area concentration obtained from the lidar observations and used as input for the INP parameterizations agreed well (<30 %-50 % deviation) with the aircraft measurements. In a pronounced lofted dust layer during summer (10 July 2013), the lidar retrieval yielded 100-300 CCN per cubic centimeter at 0.2 % water supersaturation and 10-200 INPs per liter at -25 C. Excellent agreement was also obtained in the comparison of mass concentration profiles. During the SALTRACE winter campaign (March 2014), the dust layer from Africa was mixed with smoke particles which dominated the CCN number concentration. This example highlights the unique lidar potential to separate smoke and dust contributions to the CCN reservoir and thus to identify the sensitive role of smoke in trade wind cumuli developments over the tropical Atlantic during the winter season.

elib-URL des Eintrags:https://elib.dlr.de/129710/
Dokumentart:Zeitschriftenbeitrag
Titel:Profiles of cloud condensation nuclei, dust mass concentration, and ice-nucleating-particle-relevant aerosol properties in the Saharan Air Layer over Barbados from polarization lidar and airborne in situ measurements
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Haarig, MoritzLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germanyhttps://orcid.org/0000-0002-5533-2112NICHT SPEZIFIZIERT
Walser, AdrianFaculty of Physics, University of Vienna, Vienna, Austriahttps://orcid.org/0000-0003-0175-8211NICHT SPEZIFIZIERT
Ansmann, AlbertLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germanyhttps://orcid.org/0000-0002-9196-4969NICHT SPEZIFIZIERT
Dollner, MaximilianFaculty of Physics, University of Vienna, Vienna, AustriaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Althausen, DietrichLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Sauer, DanielDLR, IPAhttps://orcid.org/0000-0002-0317-5063NICHT SPEZIFIZIERT
Farrell, DavidCaribbean Institute for Meteorology and Hydrology, Bridgetown, Barbadoshttps://orcid.org/0000-0003-0644-7164NICHT SPEZIFIZIERT
Weinzierl, BernadettFaculty of Physics, University of Vienna, Vienna, Austriahttps://orcid.org/0000-0003-4555-5686NICHT SPEZIFIZIERT
Datum:18 November 2019
Erschienen in:Atmospheric Chemistry and Physics (ACP)
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
DOI:10.5194/acp-19-13773-2019
Seitenbereich:Seiten 13773-13788
Verlag:Copernicus Publications
ISSN:1680-7316
Status:veröffentlicht
Stichwörter:aerosol-cloud interaction, Saharan mineral dust, lidar, in-situ measurements
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Projekt Klimarelevanz von atmosphärischen Spurengasen, Aerosolen und Wolken
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Atmosphärische Spurenstoffe
Hinterlegt von: Sauer, Dr. Daniel
Hinterlegt am:11 Nov 2019 07:16
Letzte Änderung:04 Jun 2024 08:46

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