There’s this research institute in the U.S. called the Chemical Sciences Division, it’s in the same federal building that houses the National Weather Service. The overlaps between chemistry and meteorology are so important for air quality and atmospheric modeling, it’s one of the main directions the field of meteorology is developed in. France and US have many programs for exchanging scientists, just email people in mid-level positions of authority and ask for visiting researcher funding. Come visit once you’ve studied for a while! Check out this woman’s work

https://iccf.uca.fr/mopga-arrivee-de-barbara-ervens-a-l-iccf-88994.kjsp?RH=1537881700094