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Open AccessArticle

A First Case Study of CCN Concentrations from Spaceborne Lidar Observations

1
Department of Meteorology and Climatology, School of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2
Institut für Physik der Atmosphäre, Deutsches Zentrum für Luft und Raumfahrt (DLR), Oberpfaffenhofen, 82234 Weßling, Germany
3
Institute for Astronomy, Astrophysics, Space Application and Remote Sensing, National Observatory of Athens, Athens, 15236 Penteli, Greece
4
Laboratory of Atmospheric Physics, Physics Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
5
Satellite Applications, Met Office, Exeter EX1 3PB, UK
6
Leipzig Institute for Meteorology, Leipzig University, 04103 Leipzig, Germany
*
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(10), 1557; https://doi.org/10.3390/rs12101557
Received: 4 April 2020 / Revised: 7 May 2020 / Accepted: 13 May 2020 / Published: 14 May 2020
(This article belongs to the Collection Feature Papers of Section Atmosphere Remote Sensing)
We present here the first cloud condensation nuclei (CCN) concentration profiles derived from measurements with the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) aboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO), for different aerosol types at a supersaturation of 0.15%. CCN concentrations, along with the corresponding uncertainties, were inferred for a nighttime CALIPSO overpass on 9 September 2011, with coincident observations with the Facility for Airborne Atmospheric Measurements (FAAM) BAe-146 research aircraft, within the framework of the Evaluation of CALIPSO’s Aerosol Classification scheme over Eastern Mediterranean (ACEMED) research campaign over Thessaloniki, Greece. The CALIPSO aerosol typing is evaluated, based on data from the Copernicus Atmosphere Monitoring Service (CAMS) reanalysis. Backward trajectories and satellite-based fire counts are used to examine the origin of air masses on that day. Our CCN retrievals are evaluated against particle number concentration retrievals at different height levels, based on the ACEMED airborne measurements and compared against CCN-related retrievals from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensors aboard Terra and Aqua product over Thessaloniki showing that it is feasible to obtain CCN concentrations from CALIPSO, with an uncertainty of a factor of two to three. View Full-Text
Keywords: CCN concentrations; remote sensing; aerosol-cloud Interactions; CALIPSO; airborne measurements; ACEMED; FAAM; MODIS CCN concentrations; remote sensing; aerosol-cloud Interactions; CALIPSO; airborne measurements; ACEMED; FAAM; MODIS
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MDPI and ACS Style

Georgoulias, A.K.; Marinou, E.; Tsekeri, A.; Proestakis, E.; Akritidis, D.; Alexandri, G.; Zanis, P.; Balis, D.; Marenco, F.; Tesche, M.; Amiridis, V. A First Case Study of CCN Concentrations from Spaceborne Lidar Observations. Remote Sens. 2020, 12, 1557.

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