EGU21-15153
https://doi.org/10.5194/egusphere-egu21-15153
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Dual pure-rotational Raman channel design and implementation in a multiwavelength lidar system for the monitoring of aerosol optical properties.

José-Alex Zenteno-Hernández1,2, Adolfo Comerón-Tejero1, Alejandro Rodríguez-Gómez1, Constantino Muñoz-Porcar1, Daniel-Camilo Fortunato-dos-Santos-Oliveira1, and Michaël Sicard1,3
José-Alex Zenteno-Hernández et al.
  • 1CommSensLab, Dept. of Signal Theory and Communications, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
  • 2Instituto Nacional de Astrofísica, Óptica y Electrónica., Optics department, Mexico (jazh@inaoep.mx)
  • 3Ciències i Tecnologies de l’Espai-Centre de Recerca de l’Aeronàutica i de l’Espai/Institut d’Estudis Espacials de Catalunya (CTE-CRAE/IEEC), Universitat Politècnica de Catalunya (UPC), 08034 Barcelona, Spain

Pure-rotational Raman (PRR) scattering has proven to be an efficient technique for the determination of atmospheric aerosol optical properties for lidar applications. We present the implementation of a UV-PRR and the design of a VIS-PRR in the EARLINET/UPC multi-wavelength lidar system (Barcelona, Spain). State-of-the-art computations of N2 and O2 differential backscatter cross-sections weighted by the optical losses inside the optical separation unit of the system allow for the theoretical estimation of the expected signal-to-noise ratios (SNR) in both UV and VIS channels. By means of customized optical interference filters UV-PRR signals from atmospheric N2 and O2 were detected and compared to the classical vibro-rotational Raman signals. UV-PRR detected signals have shown to possess high SNR and relative uncertainty levels lower than a tolerable 15% for daytime and nighttime measurements. The theoretical analysis of the VIS-PRR channel augurs improvements similar to those observed with the UV-PRR channel.

How to cite: Zenteno-Hernández, J.-A., Comerón-Tejero, A., Rodríguez-Gómez, A., Muñoz-Porcar, C., Fortunato-dos-Santos-Oliveira, D.-C., and Sicard, M.: Dual pure-rotational Raman channel design and implementation in a multiwavelength lidar system for the monitoring of aerosol optical properties., EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-15153, https://doi.org/10.5194/egusphere-egu21-15153, 2021.

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