Aura Ozone Monitoring Instrument (OMI) Collection 4 Formaldehyde Products

Abstract This study presents the ozone monitoring instrument (OMI) Collection 4 formaldehyde (HCHO) retrieval developed with the Smithsonian Astrophysical Observatory's (SAO) Making Earth System Data Records for Use in Research Environments (MEaSUREs) algorithm. The retrieval algorithm updates and makes improvements to the NASA operational OMI HCHO (OMI Collection 3 HCHO) algorithm, and has been transitioned to use OMI Collection 4 Level‐1B radiances. This paper describes the updated retrieval algorithm and compares Collection 3 and Collection 4 data products. The OMI Collection 4 HCHO exhibits remarkably improved stability over time in comparison to the OMI Collection 3 HCHO product, with better precision and the elimination of artificial trends present in the Collection 3 during the later years of the mission. We validate the OMI Collection 4 HCHO data product using Fourier‐Transform Infrared (FTIR) ground‐based HCHO measurements. The climatological monthly averaged OMI Collection 4 HCHO vertical column densities (VCDs) agree well with the FTIR VCDs, with a correlation coefficient of 0.83, root‐mean‐square error (RMSE) of molecules , regression slope of 0.79, and intercept of molecules . Additionally, we compare the monthly averaged OMI Collection 4 HCHO VCDs to OMPS Suomi NPP, OMPS NOAA‐20, and TROPOMI HCHO VCDs in overlapping years for 12 geographic regions. This comparison demonstrates high correlation coefficients of 0.98 (OMPS Suomi NPP), 0.97 (OMPS NOAA‐20), and 0.90 (TROPOMI).

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Publication Details

Journal
Earth and Space Science
Published
2025-02-01
DOI
https://doi.org/10.1029/2024ea003792
Citations
8
Primary Topic
Atmospheric chemistry and aerosols
Type
article
Field-Weighted Citation Impact
10.41

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article

Aura Ozone Monitoring Instrument (OMI) Collection 4 Formaldehyde Products

HUIQUN WANG, Gonzalo González Abad, Wolfgang Stremme, Zolal Ayazpour et al.
8 citations
Earth and Space Science
Atmospheric chemistry and aerosols
10.41
article

Aura Ozone Monitoring Instrument (OMI) Collection 4 Formaldehyde Products

HUIQUN WANG, Gonzalo González Abad, Wolfgang Stremme, Zolal Ayazpour, Amelie N. Röhling, Dan Smale, Kimberly Strong, Mathias Palm, Emmanuel Mahieu, Justus Notholt, Isabelle De Smedt, Nicholas Jones, Caroline R. Nowlan, James W. Hannigan, Rigel Kivi, Ewan O’Sullivan, K. Chance, Christopher Chan Miller, Kang Sun, Isao Murata, Tomoo Nagahama, Hyeong‐Ahn Kwon, Ralf Sussmann, Lei Zhu, Christof Petri, Isamu Morino, Corinne Vigouroux, Xiong Liu, Yao Té, Heesung Chong, Maria Makarova, M. Zhou, Xiaoyu Sun
article en
8 citations

Abstract

Abstract This study presents the ozone monitoring instrument (OMI) Collection 4 formaldehyde (HCHO) retrieval developed with the Smithsonian Astrophysical Observatory's (SAO) Making Earth System Data Records for Use in Research Environments (MEaSUREs) algorithm. The retrieval algorithm updates and makes improvements to the NASA operational OMI HCHO (OMI Collection 3 HCHO) algorithm, and has been transitioned to use OMI Collection 4 Level‐1B radiances. This paper describes the updated retrieval algorithm and compares Collection 3 and Collection 4 data products. The OMI Collection 4 HCHO exhibits remarkably improved stability over time in comparison to the OMI Collection 3 HCHO product, with better precision and the elimination of artificial trends present in the Collection 3 during the later years of the mission. We validate the OMI Collection 4 HCHO data product using Fourier‐Transform Infrared (FTIR) ground‐based HCHO measurements. The climatological monthly averaged OMI Collection 4 HCHO vertical column densities (VCDs) agree well with the FTIR VCDs, with a correlation coefficient of 0.83, root‐mean‐square error (RMSE) of molecules , regression slope of 0.79, and intercept of molecules . Additionally, we compare the monthly averaged OMI Collection 4 HCHO VCDs to OMPS Suomi NPP, OMPS NOAA‐20, and TROPOMI HCHO VCDs in overlapping years for 12 geographic regions. This comparison demonstrates high correlation coefficients of 0.98 (OMPS Suomi NPP), 0.97 (OMPS NOAA‐20), and 0.90 (TROPOMI).

Earth and Space ScienceVol. 12(2)
Karlsruhe Institute of Technology (DE), NSF National Center for Atmospheric Research (US), Finnish Meteorological Institute (FI), Centre National de la Recherche Scientifique (FR), Environmental Defense Fund (US), Harvard University (US), University of Liège (BE), University of Suwon (KR), St Petersburg University (RU), University of Bremen (DE), University of Toronto (CA), Chinese Academy of Sciences (CN), Royal Belgian Institute for Space Aeronomy (BE), National Institute for Environmental Studies (JP), Tohoku University (JP), University of Wollongong (AU), Southern University of Science and Technology (CN), UNSW Sydney (AU), Sorbonne Université (FR), Center for Astrophysics Harvard & Smithsonian (US), Molécule aux Nanos-objets : Réactivité, Interactions et Spectroscopies (FR), Institute of Atmospheric Physics (CN), National Institute of Water and Atmospheric Research (NZ), Nagoya University (JP), University at Buffalo, State University of New York (US), Universidad Nacional Autónoma de México (MX)
National Aeronautics and Space Administration
Climate action
Openalex Percentile: Top 1%
Atmospheric chemistry and aerosols
10.41
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