TY - JOUR

T1 - Bias correction of OMI HCHO columns based on FTIR and aircraft measurements and impact on top-down emission estimates

AU - Müller, J.-F.

AU - Stavrakou, T.

AU - Oomen, G.-M.

AU - Opacka, B.

AU - De Smedt, I.

AU - Guenther, A.

AU - Vigouroux, C.

AU - Langerock, B.

AU - Aquino, C.A.B.

AU - Grutter, M.

AU - Hannigan, J.

AU - Hase, F.

AU - Kivi, R.

AU - Lutsch, E.

AU - Mahieu, E.

AU - Makarova, M.

AU - Metzger, J.-M.

AU - Morino, I.

AU - Murata, I.

AU - Nagahama, T.

AU - Notholt, J.

AU - Ortega, I.

AU - Palm, M.

AU - Röhling, A.

AU - Stremme, W.

AU - Strong, K.

AU - Sussmann, R.

AU - Té, Y.

AU - Fried, A.

N1 - Export Date: 11 March 2024 Адрес для корреспонденции: Müller, J.-F.; Royal Belgian Institute for Space Aeronomy (BIRA-IASB)Belgium; эл. почта: jfm@aeronomie.be Сведения о финансировании: Horizon 2020 Framework Programme, H2020, 101004318 Сведения о финансировании: Seventh Framework Programme, FP7, 6007405 Сведения о финансировании: European Commission, EC Сведения о финансировании: European Space Agency, ESA, 4000130630 Сведения о финансировании: Bundesministerium für Bildung und Forschung, BMBF, 01LG1904A Сведения о финансировании: Belgian Federal Science Policy Office, BELSPO, B2/202/01/EQUATOR Сведения о финансировании: Nagoya University, NU Сведения о финансировании: Sorbonne Université Текст о финансировании 1: This research has been supported by the EQUATOR project of the BRAIN-be 2.0 program from the Belgian Science Policy Office (Belspo) (grant no. B2/202/01/EQUATOR), by the SEEDS project funded by the European Commission under the H2020 program (grant no. 101004318), by the ProDEx-12 project TROVA-E2 of the European Space Agency (grant no. 4000130630) and by the BMBF (German Ministry of Research and Education) in the project ROMIC-II, subproject TroStra (grant no. 01LG1904A). Текст о финансировании 2: The Paris site has received funding from Sorbonne Université, the French research center CNRS, the French space agency CNES and Région Île-de-France. FTIR operations of Rikubetsu and Tsukuba are supported in part by the GOSAT series project. The Rikubetsu NDACC site is funded by the joint research program of the Institute for Space-Earth Environmental Research (ISEE), Nagoya University. We thank the AWI Bremerhaven, Germany, and the Meteorological Service Suriname for logistical support and the senate of Bremen for logistical and financial support. We acknowledge the support of the station personnel at the AWIPEV research base in Ny-Ålesund, Spitsbergen, and Cor Becker for support in Paramaribo, Suriname. Текст о финансировании 3: HCHO satellite data from OMI were produced in the scope of the European FP7 project QA4ECV (grant no. 6007405). We thank Dan Smale and the National Institute of Water and Atmospheric Research (NIWA) for the provision of the Lauder FTIR data, and we thank Nicholas Jones of the Centre for Atmospheric Chemistry, University of Wollongong, Wollongong, Australia, for provision of Wollongong FTIR data. Thanks to Thomas Hanisco and the NASA Goddard Space Flight Center (GSFC) for provision of ISAF data (SENEX). Emmanuel Mahieu is a senior research associate with the F.R.S. – FNRS. Пристатейные ссылки: Abbot, D. S., Palmer, P. I., Martin, R. V., Chance, K. V., Jacob, D. 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PY - 2024/2/22

Y1 - 2024/2/22

N2 - Spaceborne formaldehyde (HCHO) measurements constitute an excellent proxy for the sources of non-methane volatile organic compounds (NMVOCs). Past studies suggested substantial overestimations of NMVOC emissions in state-of-the-art inventories over major source regions. Here, the QA4ECV (Quality Assurance for Essential Climate Variables) retrieval of HCHO columns from OMI (Ozone Monitoring Instrument) is evaluated against (1) FTIR (Fourier-transform infrared) column observations at 26 stations worldwide and (2) aircraft in situ HCHO concentration measurements from campaigns conducted over the USA during 2012-2013. Both validation exercises show that OMI underestimates high columns and overestimates low columns. The linear regression of OMI and aircraft-based columns gives ωOMICombining double low line0.651ωairc+2.95×1015 molec.cm-2, with ωOMI and ωairc the OMI and aircraft-derived vertical columns, whereas the regression of OMI and FTIR data gives ωOMICombining double low line0.659ωFTIR+2.02×1015 molec.cm-2. Inverse modelling of NMVOC emissions with a global model based on OMI columns corrected for biases based on those relationships leads to much-improved agreement against FTIR data and HCHO concentrations from 11 aircraft campaigns. The optimized global isoprene emissions (ĝ1/4445Tgyr-1) are 25% higher than those obtained without bias correction. The optimized isoprene emissions bear both striking similarities and differences with recently published emissions based on spaceborne isoprene columns from the CrIS (Cross-track Infrared Sounder) sensor. Although the interannual variability of OMI HCHO columns is well understood over regions where biogenic emissions are dominant, and the HCHO trends over China and India clearly reflect anthropogenic emission changes, the observed HCHO decline over the southeastern USA remains imperfectly elucidated. © Copyright:

AB - Spaceborne formaldehyde (HCHO) measurements constitute an excellent proxy for the sources of non-methane volatile organic compounds (NMVOCs). Past studies suggested substantial overestimations of NMVOC emissions in state-of-the-art inventories over major source regions. Here, the QA4ECV (Quality Assurance for Essential Climate Variables) retrieval of HCHO columns from OMI (Ozone Monitoring Instrument) is evaluated against (1) FTIR (Fourier-transform infrared) column observations at 26 stations worldwide and (2) aircraft in situ HCHO concentration measurements from campaigns conducted over the USA during 2012-2013. Both validation exercises show that OMI underestimates high columns and overestimates low columns. The linear regression of OMI and aircraft-based columns gives ωOMICombining double low line0.651ωairc+2.95×1015 molec.cm-2, with ωOMI and ωairc the OMI and aircraft-derived vertical columns, whereas the regression of OMI and FTIR data gives ωOMICombining double low line0.659ωFTIR+2.02×1015 molec.cm-2. Inverse modelling of NMVOC emissions with a global model based on OMI columns corrected for biases based on those relationships leads to much-improved agreement against FTIR data and HCHO concentrations from 11 aircraft campaigns. The optimized global isoprene emissions (ĝ1/4445Tgyr-1) are 25% higher than those obtained without bias correction. The optimized isoprene emissions bear both striking similarities and differences with recently published emissions based on spaceborne isoprene columns from the CrIS (Cross-track Infrared Sounder) sensor. Although the interannual variability of OMI HCHO columns is well understood over regions where biogenic emissions are dominant, and the HCHO trends over China and India clearly reflect anthropogenic emission changes, the observed HCHO decline over the southeastern USA remains imperfectly elucidated. © Copyright:

KW - airborne survey

KW - atmospheric pollution

KW - correction

KW - formaldehyde

KW - FTIR spectroscopy

KW - volatile organic compound

KW - United States

UR - https://www.mendeley.com/catalogue/63db05ed-c53b-314d-bce2-e0844cf9d67f/

U2 - 10.5194/acp-24-2207-2024

DO - 10.5194/acp-24-2207-2024

M3 - статья

VL - 24

SP - 2207

EP - 2237

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 4

ER -