EGU24-20394, updated on 11 Mar 2024
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Validation and support of space-based measurements with the Pandonia Global Network of ground-based spectrometers

Thomas Hanisco1, Nader Abuhassan1,2,3, Stefano Casadio4, Alexander Cede1,3,5, Limseok Chang6, Angelika Dehn4, Barry Lefer7, Elena Lind1, Apoorva Pandey1,2, Bryan Place1,3, Alberto Redondas8, James Szykman9, Martin Tiefengraber5, Luke Valin9, Michel van Roozendael10, and Jonas von Bismarck4
Thomas Hanisco et al.
  • 1NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
  • 2University of Maryland Baltimore County, Maryland, USA
  • 3SciGlob, Columbia, MD, USA
  • 4Earth Observation Ground Segment Department, ESA / ESRIN, Frascati, Italy
  • 5LuftBlick, Innsbruck, Austria
  • 6National Institute of Environmental Research, Incheon, Korea
  • 7NASA Headquarters, Washington, DC, USA
  • 8AEMET- Meteorological State Agency, Spain
  • 9EPA Research Triangle Park, Charllotte, NC, USA
  • 10BIRA-IASB, Brussels, Belgium

Since 2019 the NASA Pandora and ESA Pandonia projects have been collaborating to coordinate and facilitate the expansion of a global network of ground-based spectrometers to support space-based measurements of trace gases relevant to air quality (NO2, O3, HCHO, SO2, …). This network of standardized, calibrated Pandora instruments, the Pandonia Global Network (PGN,, is focused on providing data needed to help validate satellite measurements and to contribute to scientific studies of air quality.  As of January 2024, the PGN is comprised of 158 official sites in 34 countries. This presentation will describe recent efforts to expand and improve the network to support the increased capability and complexity of space-based measurements. Collaborative efforts by partner agencies, especially the US Environmental Protection Agency (EPA) and the Korean National Institute of Environmental Research (NIER), and new programs such as the Increasing Participation in Minority Serving Institutions (IPMSI) and Satellite Needs Working Group (SNWG) have accelerated the growth of the PGN, providing greater global coverage and allowing improved data products.  With these improvements and continued input from other suborbital assets, the PGN is well positioned to facilitate the interpretation and validation of high spatial resolution and diurnal measurements provided by the newest orbiting and geostationary satellite instruments. 

How to cite: Hanisco, T., Abuhassan, N., Casadio, S., Cede, A., Chang, L., Dehn, A., Lefer, B., Lind, E., Pandey, A., Place, B., Redondas, A., Szykman, J., Tiefengraber, M., Valin, L., van Roozendael, M., and von Bismarck, J.: Validation and support of space-based measurements with the Pandonia Global Network of ground-based spectrometers, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-20394,, 2024.