- 1U. of Alabama in Huntsville, University, Atmospheric and Earth Science, Huntsville, United States of America (mike@nsstc.uah.edu)
- 2UC Berkeley, Berkeley, USA (rccohen@berkeley.edu)
- 3USEPA, Hampton, USA (szykman.jim@epa.gov)
- 4U Wisconsin, SSEC, Madison, USA, (rbpierce@wisc.edu
- 5SAO, Cambridge, USA (xliu@cfa.harvard.edu)
- 6NASA/LaRC, Hampton, USA (david.e.flittner@nasa.gov)
- 7SAO, Cambridge, USA retired (kchance@cfa.harvard.edu)
The Tropospheric Emissions: Monitoring of Pollution (TEMPO) Instrument is a NASA Earth Venture Instrument (EV-I) project selected on November 8, 2012 in response to the second Stand Alone Mission of Opportunity Notice. The Smithsonian Astrophysical Observatory (SAO) under the direction of the TEMPO Principal Investigator (Pl) at SAO is the lead organization for the project, responsible for TEMPO instrument development data products and science.
The Tropospheric Emissions: Monitoring of Pollution (TEMPO) Instrument [Zoogman et al., 2017] is dispersive spectrometer designed to measure solar back-scatter light in the ultraviolet (UV) and visible (VIS) spectral ranges. The TEMPO instrument draws on several decades of heritage spectrometers (GOME, SCIAMACHY, OMI, TROPOMI, GOME-2, and OMPS; Burrows et al., 1999; Bovensmann et al., 1999; Levelt et al., 2018; Munro et al., 2016; Flynn et al., 2014) operating in low-earth-orbit (LEO), adapting and applying the technology for a geostationary satellite mission designed to monitor air quality over North America. TEMPO takes advantage of a commercial geostationary host spacecraft to make the first North American tropospheric trace gas measurements from GEO. Novel to TEMPO are hourly measurements (or less) during daylight hours at high spatial resolution (2 × 4.75 km2 at the center of field of regard) enabling the quantification of spatial and temporal variations of trace gases and aerosols at scales relevant for understanding urban air quality in the troposphere.
As part of the PI-led TEMPO Science Team, validation of Level 2 NO2, HCHO and O3 column data products recently achieved provisional status in the TEMPO Validation Plan (NASA, 2023). This effort was completed under a best-efforts approach leveraging measurement and modeling assets and many scientist volunteers’ hours to produce a draft validation report currently under review. This talk will provide an overview of the TEMPO validation effort, specifically highlighting the range of contribution from the ad-hoc TEMPO validation team and the resulting validation of the TEMPO gas products.
How to cite: Newchurch, M., Cohen, R., Szykman, J., Pierce, B., Liu, X., Flittner, D., Henderson, B., Judd, L., and Chance, K.: TEMPO Provisional Validation, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-13818, https://doi.org/10.5194/egusphere-egu25-13818, 2025.
