The Tropospheric Emission Spectrometer (TES) was launched aboard the Aura spacecraft in 2004 and decommissioned in February 2018. Over more than a decade of observations, TES has shown the potential of high-resolution Fourier Transform Spectrometer (FTS) measurements to alter our understanding of atmospheric composition and its relationship to the Earth System. We survey some of the major contributions TES has made to understanding air quality, chemistry-climate interactions, atmospheric hydrology, and carbon cycle science. We then show how innovations in retrieval methods pioneered by the TES team are now being applied to multi-spectral, multi-instrument records, establishing a new paradigm for composition measurements into the future.
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