Temperature of tropopause
Measurement Instruments
Measurement Definition: Atmospheric temperature at the height of the surface separating the troposphere from the stratosphere - Physical unit: [ K ] - Accuracy unit: [ K ].
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
| ACE-FTS | Operational | Measure and understand the chemical processes that control the distribution of ozone in the Earth's atmosphere, especially at high altitudes. Monitoring the Canadian Environmental Protection Act (CEPA), the UN Montreal Protocol, and Paris Climate Agreement. Contribute to GoC Methane Pledge | Limb-scanning IR spectrometer |  |
| AMSU-A | Operational | All-weather night-day temperature sounding to an altitude of 45 km. | n/a | |
| AMSU-A | Operational | All-weather night-day temperature sounding to an altitude of 45 km. AMSU-A on Aqua is still partially operational, with 9 of the 15 channels working and collecting data. | n/a | |
| GNOS-1 | Operational | Atmospheric sounding for weather forecasting. | GNSS radio-occultation receiver | |
| GNOS-2 | Operational | Atmospheric sounding for weather forecasting. | GNSS radio-occultation receiver | |
| HIRAS-1 | Operational | Measurements: High-spectral-resolution thermal infrared radiance spectra of the Earth–atmosphere system
Applications: Atmospheric profiling, Trace-gas retrieval, NWP data assimilation, Climate monitoring | n/a | |
| HIRAS-2 | Operational | Measurements: High-spectral-resolution thermal infrared radiance spectra of the Earth–atmosphere system
Applications: Atmospheric profiling, Trace-gas retrieval, NWP data assimilation, Climate monitoring | n/a | |