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Chemical CluesOzoneGlobal Climate ChangeGlobal Water CycleBiomass BurningAir PollutionWhat Is TESDetecting AltitudesNadir and Limb ViewsValidationWebsite banner: Tropospheric Emission SpectrometerEarth


As we prepare to meet the challenges of global climate change and pollution, we urgently need to improve our understanding of the atmosphere's chemistry. TES is making a vital contribution to this effort as one of four instruments aboard NASA's Aura satellite. TES focuses on the troposphere, the layer of atmosphere that stretches from the ground to the altitude at which airplanes fly. With very high spectral resolution, TES can distinguish concentrations of gases at different altitudes, a key factor in understanding their behavior and impact. It's the first orbiting instrument able to do this with ozone, a very important chemical with regard to both global warming and air pollution.

News And Events

KORUS-AQ AIRS-OMI combined Ozone Regional Maps Available at AVDC
The TES team has generated new KORUS AQ AIRS-OMI combined Level 2 ozone profile products that have regional coverage over the Korean penninsula. More >>
Farewell to a Pioneering Pollution Sensor
On Jan. 31, NASA ended the Tropospheric Emission Spectrometer's (TES) almost 14-year career of discovery. More >>
NASA-led Study Solves a Methane Puzzle
A new NASA-led study has solved a puzzle involving the recent rise in atmospheric methane, a potent greenhouse gas, with a new calculation of emissions from global fires. More >>
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