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Validation of OMPS Suomi NPP and OMPS NOAA-20 Formaldehyde Total Columns With NDACC FTIR Observations

dc.contributor.authorKwon, H.-A.
dc.contributor.authorGonzález Abad, G.
dc.contributor.authorNowlan, C.R.
dc.contributor.authorChong, H.
dc.contributor.authorSouri, A.H.
dc.contributor.authorVigouroux, C.
dc.contributor.authorRöhling, A.
dc.contributor.authorKivi, R.
dc.contributor.authorMakarova, M.
dc.contributor.authorNotholt, J.
dc.contributor.authorPalm, M.
dc.contributor.authorWinkler, H.
dc.contributor.authorTé, Y.
dc.contributor.authorSussmann, R.
dc.contributor.authorRettinger, M.
dc.contributor.authorMahieu, E.
dc.contributor.authorStrong, K.
dc.contributor.authorLutsch, E.
dc.contributor.authorYamanouchi, S.
dc.contributor.authorNagahama, T.
dc.contributor.authorHannigan, J.W.
dc.contributor.authorZhou, M.
dc.contributor.authorMurata, I.
dc.contributor.authorGrutter, M.
dc.contributor.authorStremme, W.
dc.contributor.authorDe Mazière, M.
dc.contributor.authorJones, N.
dc.contributor.authorSmale, D.
dc.contributor.authorMorino, I.
dc.date2023
dc.date.accessioned2023-05-17T04:41:35Z
dc.date.available2023-05-17T04:41:35Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/10994
dc.descriptionWe validate formaldehyde (HCHO) vertical column densities (VCDs) from Ozone Mapping and Profiler Suite Nadir Mapper (OMPS-NM) instruments onboard the Suomi National Polar-orbiting Partnership (Suomi NPP) satellite for 2012–2020 and National Oceanic and Atmospheric Administration-20 (NOAA-20) satellite for 2018–2020, hereafter referred to as OMPS-NPP and OMPS-N20, with ground-based Fourier-Transform Infrared (FTIR) observations of the Network for the Detection of Atmospheric Composition Change (NDACC). OMPS-NPP/N20 HCHO products reproduce seasonal variability at 24 FTIR sites. Monthly variability of OMPS-NPP/N20 has a very good agreement with FTIR, showing correlation coefficients of 0.83 and 0.88, respectively. OMPS-NPP (N20) biases averaged over all sites are −0.9 (4) ± 3 (6)\%. However, at clean sites (with VCDs < 4.0 × 1015 molecules cm−2), positive biases of 20 (32) ± 6 (18)\% occur for OMPS-NPP (N20). At sites with HCHO VCDs > 4.0 × 1015 molecules cm−2, negative biases of −15\% ± 4\% appear for OMPS-NPP, but OMPS-N20 shows smaller bias of 0.5\% ± 6\% due to its smaller ground pixel footprints. Therefore, smaller satellite footprint sizes are important in distinguishing small-scale plumes. In addition, we discuss a bias correction and provide lower limit for the monthly uncertainty of OMPS-NPP/N20 HCHO products. The total uncertainty for OMPS-NPP (N20) at clean sites is 0.7 (0.8) × 1015 molecules cm−2, corresponding to a relative uncertainty of 32 (30)\%. In the case of HCHO VCDs > 4.0 × 1015 molecules cm−2, however, the relative uncertainty in HCHO VCDs for OMPS-NPP (N20) decreases to 31 (18)\%.
dc.languageeng
dc.titleValidation of OMPS Suomi NPP and OMPS NOAA-20 Formaldehyde Total Columns With NDACC FTIR Observations
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeformaldehyde
dc.subject.freeOMPS
dc.subject.freeSuomi NPP
dc.subject.freeNOAA-20
dc.subject.freeFTIR
dc.subject.freevalidation
dc.source.titleEarth and Space Science
dc.source.volume10
dc.source.issue5
dc.source.pagee2022EA002778
Orfeo.peerreviewedYes
dc.identifier.doi10.1029/2022EA002778
dc.identifier.scopus


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