ACECHEM (Atmospheric Composition Explorer for CHEMistry and climate interaction) was an early ESA Earth Explorer candidate concept for studying the upper troposphere and lower stratosphere as a coupled chemical, dynamical and radiative system. It targeted climate-chemistry feedbacks, stratosphere-troposphere exchange, stratospheric change and pollution impacts, using dedicated limb-sounding millimetre-wave and mid-infrared spectrometers plus a limb-viewing cloud imager in formation with MetOp. ESA documents ACECHEM as a research concept rather than an implemented programme.
ACECHEM (Atmospheric Composition Explorer for CHEMistry and climate interaction) was an early ESA Earth Explorer candidate concept for studying the upper troposphere and lower stratosphere as a coupled chemical, dynamical and radiative system. It targeted climate-chemistry feedbacks, stratosphere-troposphere exchange, stratospheric change and pollution impacts, using dedicated limb-sounding millimetre-wave and mid-infrared spectrometers plus a limb-viewing cloud imager in formation with MetOp. ESA documents ACECHEM as a research concept rather than an implemented programme.