Atmospheric CO₂ measurements with a 2-μm DIAL instrument

Erwan Cadiou (1, 2) , Jean-Baptiste Dherbecourt (1) , Guillaume Gorju (1) , Jean-Michel Melkonian (1) , Antoine Godard (1) , Jacques Pelon (3) , Myriam Raybaut (1)

1 ONERA, Université Paris Saclay (COmUE) [Palaiseau]
2 CNES - Centre National d'Études Spatiales [Toulouse]
3 TROPO - LATMOS

We report on ground-based atmospheric concentration measurements of carbon dioxide, using a pulsed direct detection differential absorption lidar operating at 2051 nm. The transmitter is based on a tunable parametric source emitting 10-mJ energy, 10-ns duration Fourier-limited pulses. Range resolved concentration measurements have been carried out on the aerosol back-scattered signal. Cloud signals have been used to get long range integrated-path measurements.

Domains: Sciences of the Universe [physics]; Ocean, Atmosphere

Erwan Cadiou, Jean-Baptiste Dherbecourt, Guillaume Gorju, Jean-Michel Melkonian, Antoine Godard, et al.. Atmospheric CO₂ measurements with a 2-μm DIAL instrument. EPJ Web of Conferences, 2018, (The 28th International Laser Radar Conference (ILRC 28), Bucharest 2017), 176, art. 05045 (4 p.). ⟨10.1051/epjconf/201817605045⟩. ⟨insu-01769225⟩