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A few years later, in 2009, the LMD embarked on the design of lidars for measuring the concentration of greenhouse gases (methane, carbon dioxide). It thus contributes to the Ascope space project, dedicated to measuring the concentration of CO 2 . This project served as the basis for the design of Merlin, the first Franco-German mission in progress – the launch is scheduled for 2021 – which will measure the atmospheric concentration of methane using a lidar. Finally, for nearly 20 years, the LMD has been contributing to the European Copernicus program for the construction of a European service system for monitoring air quality and climate.
Laser beam emitted by the Ipral lidar, deployed by the LMD on the Sirta experiment site for the phone number list study of aerosols and clouds. DR , Author provided A model for the Earth and the planets Second pillar of the LMD, numerical modeling was initiated in 1965 with the development of a general circulation model, perfected in anticipation of the Eole project; a first version appeared in 1984. The development of the general circulation model of the LMD stimulates the development of a specific land surface model (called Sechiba), in order to calculate the energy and water balance of terrestrial ecosystems. The first version of the model is developed at the LMD by Katia Laval and Robert Sadourny.

In 1990, the laboratory chose to make this dynamic code the backbone of the future LMD climate model. Called LMDz , the LMD model began to be used from 1995 for climate studies. Since then, it has continued to evolve. LMDz also constitutes the atmospheric component of the “Integrated Climate Model” of the Pierre Simon Laplace Institute; the latter serves the international research effort on the future evolution of the climate and simulates the dynamics of all the components of the Earth system: the atmosphere, of course, but also the ocean and the continental surface.
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