What question did this study set out to answer?

The aim is to enhance mechanisms for monitoring atmospheric methane through advanced lidar techniques.

April 16, 2026

Ongoing activities at LMD to prepare the CH

Key Points

The aim is to enhance mechanisms for monitoring atmospheric methane through advanced lidar techniques.
Improving spectroscopy data for better precision.
Conducting end-to-end modeling to understand uncertainty impacts.
Developing an inversion system for processing parameters.
Setting up measurement campaigns to analyze methane variability and fluxes.
Creating a ground-based lidar system for CH4 profiling.
Enhanced understanding of measurement sensitivity to uncertainties.
Development of new tools for accurate methane flux measurement.
Increased capability to analyze atmospheric methane variability.

Abstract

MERLIN (MEthane Remote LIdar missioN) is a space mission developed by France and Germany to monitor the atmospheric methane using an IPDA (Integrated Path Differential Absorption) lidar. The mission is scheduled for launch at the end of the decade. Currently, the LMD (Laboratoire de Météorologie Dynamique) is working on improving spectroscopy data, end-to-end modelling of the instrument to study the sensitivity of measurements to different sources of uncertainty, developing an inversion system to study the impact of certain data processing parameters, setting up measurement campaigns to better understand methane variability and fluxes, as well as developing a ground-based differential absorption lidar for CH4 profiling.

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