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Publikacja

Broadband Single-channel Fluorescence in ESA Mobile Raman Lidar (EMORAL)

Hafiz A., Stachlewska I.S.

10th International Conference on Sensors and Electronic Instrumentation Advances (SEIA' 2024)

2024

This paper discusses the technical evaluation of integration of the broadband channel centered at 470 ± 50 nm for indicative measurements of fluorescence into the European Space Agency Mobile Raman Lidar (EMORAL). The fluorescence results retrieved from POLIMOS campaign dataset (also in other datasets detailed in the full paper due to space constraints here) confirms high concentrations of fluorescence particles mainly at lower altitudes. Reliable observation at high altitudes is restricted due to low SNR at high altitudes (>3km), attributed to significant background noise and its fluctuations, complicates the background subtraction. Thus, to enhance SNR we plan to implement other denoising techniques: Fourier Transform or Empirical Mode Decomposition [1]. Additionally, direct comparisons with other fluorescence lidars would be valuable for benchmarking and/or identifying potential areas for upgrade although there are only two broadband fluorescence lidars available currently in the EU. Recent EMORAL participation in the EarthCARE Cal/Val Pilot Campaign in May 2024 at Center for Aerosol Remote Sensing (CARS) of Aerosol, Cloud and Trace Gases Research Infrastructure (ACTRIS) hosted by INOE, Romania gives us opportunity for such comparative study. Overall, addressing the challenges will be crucial for advancing the application of lidar technology in detecting fluorescence signals. 


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