Use of pure rotational Raman channels for lidar measurement of aerosol extinction coefficient: the EARLINET/ACTRIS Barcelona station experience

Alejandro Rodríguez-Gómez; Constantino Muñoz-Porcar; José-Alex Zenteno-Hernández; Adolfo Comerón; Federico Dios; Michaël Sicard; Cristina Gil-Díaz; Daniel Camilo F. S. Oliveira; Charly Mandal

doi:10.1117/12.2636427

28 October 2022 Use of pure rotational Raman channels for lidar measurement of aerosol extinction coefficient: the EARLINET/ACTRIS Barcelona station experience

Alejandro Rodríguez-Gómez, Constantino Muñoz-Porcar, José-Alex Zenteno-Hernández, Adolfo Comerón, Federico Dios, Michaël Sicard, Cristina Gil-Díaz, Daniel Camilo F. S. Oliveira, Charly Mandal

Author Affiliations +

Proceedings Volume 12265, Remote Sensing of Clouds and the Atmosphere XXVII; 1226507 (2022) https://doi.org/10.1117/12.2636427
Event: SPIE Remote Sensing, 2022, Berlin, Germany

Abstract

Advances in interference filter technology permit currently using selected parts of the N₂ and O₂ pure rotational Raman spectra with very low temperature sensitivity, while rejecting sufficiently the elastic return. The Raman technique to retrieve the aerosol extinction coefficient can then be used with higher signal-to-noise ratios, because of a higher (about 8 times) effective differential backscatter cross-section as compared to the cross-section of the N2 vibro-rotational spectra. The design and results of pure rotational Raman channels at 354 nm and 530 nm allowing daytime aerosol extinction measurements implemented at the EARLINET/ACTRIS Barcelona lidar station are presented and discussed.

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Alejandro Rodríguez-Gómez, Constantino Muñoz-Porcar, José-Alex Zenteno-Hernández, Adolfo Comerón, Federico Dios, Michaël Sicard, Cristina Gil-Díaz, Daniel Camilo F. S. Oliveira, and Charly Mandal "Use of pure rotational Raman channels for lidar measurement of aerosol extinction coefficient: the EARLINET/ACTRIS Barcelona station experience", Proc. SPIE 12265, Remote Sensing of Clouds and the Atmosphere XXVII, 1226507 (28 October 2022); https://doi.org/10.1117/12.2636427

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