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| DOI | 10.5194/acp-19-13773-2019 |
| 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 | |
| Haarig M.; Walser A.; Ansmann A.; Dollner M.; Althausen D.; Sauer D.; Farrell D.; Weinzierl B. | |
| 发表日期 | 2019 |
| ISSN | 16807316 |
| 起始页码 | 13773 |
| 结束页码 | 13788 |
| 卷号 | 19期号:22 |
| 英文摘要 | 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 Longrange 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. © 2017 Georg Thieme Verlag. All rights reserved. |
| 语种 | 英语 |
| scopus关键词 | aerosol; aerosol property; cloud condensation nucleus; concentration (composition); dust; in situ measurement; lidar; particulate matter; polarization; Barbados; Sahara; Falconidae |
| 来源期刊 | Atmospheric Chemistry and Physics
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/144042 |
| 作者单位 | Leibniz Institute for Tropospheric Research, Leipzig, Germany; Faculty of Physics, University of Vienna, Vienna, Austria; Institut für Physik der Atmosphäre, Deutsches Zentrum für Luft-und Raumfahrt, Oberpfaffenhofen, Germany; Caribbean Institute for Meteorology and Hydrology, Bridgetown, Barbados |
| 推荐引用方式 GB/T 7714 | Haarig M.,Walser A.,Ansmann A.,et al. 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[J],2019,19(22). |
| APA | Haarig M..,Walser A..,Ansmann A..,Dollner M..,Althausen D..,...&Weinzierl B..(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,19(22). |
| MLA | Haarig M.,et al."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 19.22(2019). |
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