Atmospheric Chemistry Mission Program

ESA Earth Explorer research candidate identified in 1996 to advance understanding of atmospheric chemistry, including active chlorine species and hydrogen oxides. ESA’s strategy placed the mission in the first Earth Explorer candidate set and noted the long-term need for atmospheric-chemistry monitoring and stratospheric halogen observations beyond the ozone instrument on MetOp; the dedicated Atmospheric Chemistry Mission assessment was published as volume 6 of ESA SP-1196.