Seasonal variation of total column formaldehyde, nitrogen dioxide, and ozone over various Pandora spectrometer sites with a comparison of OMI and diurnally varying DSCOVR-EPIC satellite data

Herman, Jay; Mao, Jianping

doi:https://doi.org/10.5194/amt-18-4165-2025

Articles | Volume 18, issue 17

https://doi.org/10.5194/amt-18-4165-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-18-4165-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 17

Research article

|

08 Sep 2025

Research article |

| 08 Sep 2025

Seasonal variation of total column formaldehyde, nitrogen dioxide, and ozone over various Pandora spectrometer sites with a comparison of OMI and diurnally varying DSCOVR-EPIC satellite data

Jay Herman and Jianping Mao

Data sets

OMI Overpass files for NO2, O3, HCHO in 7zip format J. Herman https://doi.org/10.5281/zenodo.15468213

Short summary

This paper examines the seasonal variation of column formaldehyde (HCHO), NO₂, and O₃ as retrieved from satellite Ozone Monitoring Instrument (OMI) and ground-based Pandora spectrometer observations. Both OMI and Pandora show that HCHO has a strong seasonal dependence. The daily amount of NO₂ pollution is underestimated by the OMI satellite observations. Pandora O₃ measurements have been successfully compared with hourly satellite measurements from the Earth Polychromatic Imaging Camera (EPIC).