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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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doi:10.5194/amt-2017-131
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
04 May 2017
Review status
This discussion paper is under review for the journal Atmospheric Measurement Techniques (AMT).
Potential of polarization/Raman lidar to separate fine dust, coarse dust, maritime, and anthropogenic aerosol profiles
Rodanthi-Elisavet Mamouri1,2 and Albert Ansmann3 1Cyprus University of Technology, Dep. of Civil Engineering and Geomatics, Limassol, Cyprus
2The Cyprus Institute, Energy, Environment, and Water Research Center, Nicosia, Cyprus
3Leibniz Institute for Tropospheric Research, Leipzig, Germany
Abstract. We applied the recently introduced Polarization Lidar Photometer Networking (POLIPHON) technique for the first time to triple-wavelength polarization lidar measurements at 355, 532, and 1064 nm. The lidar observations were performed at Barbados during the Saharan Aerosol Long-Range Transport and Aerosol-Cloud-Interaction Experiment (SALTRACE) in the summer of 2014. POLIPHON comprises the traditional lidar technique to separate mineral dust and non-dust backscatter contributions and the new extended approach to separate even the dust backscatter component into fine and coarse dust fractions. We show that the traditional and the extended methods are compatible and lead to the same set of dust and non-dust profiles at simplified, less complex aerosol layering and mixing conditions as is the case over the remote tropical Atlantic. To derive dust mass concentration profiles from the lidar observations, trustworthy extinction-to-volume conversion factors are needed and obtained from an updated, extended AERONET sun photometer data analysis of the correlation of fine, coarse and total dust volume concentration with dust extinction coefficients for all three laser wavelengths. Conversion factors for pure marine aerosol conditions and continental anthropogenic aerosol situations are presented in addition. As an additional new feature of POLIPHON, the Raman-lidar method for particle extinction profiling is used to identify the aerosol type (marine or anthropogenic) of the non-dust aerosol fraction. The full POLIPHON methodology was successfully applied to a SALTRACE case and the results are discussed. We conclude that the 532 nm polarization lidar technique has many advantages in comparison to respective 355 and 1064 nm polarization lidar approaches and leads to most robust and accurate POLIPHON products.

Citation: Mamouri, R.-E. and Ansmann, A.: Potential of polarization/Raman lidar to separate fine dust, coarse dust, maritime, and anthropogenic aerosol profiles, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2017-131, in review, 2017.
Rodanthi-Elisavet Mamouri and Albert Ansmann
Rodanthi-Elisavet Mamouri and Albert Ansmann
Rodanthi-Elisavet Mamouri and Albert Ansmann

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