Global Formaldehyde Products From the Ozone Mapping and Profiler Suite (OMPS) Nadir Mappers on Suomi NPP and NOAA-20
| dc.contributor.author | Nowlan, C.R. | |
| dc.contributor.author | González Abad, G. | |
| dc.contributor.author | Kwon, H.-A. | |
| dc.contributor.author | Ayazpour, Z. | |
| dc.contributor.author | Chan Miller, C. | |
| dc.contributor.author | Chance, K. | |
| dc.contributor.author | Chong, H. | |
| dc.contributor.author | Liu, X. | |
| dc.contributor.author | O’Sullivan, E. | |
| dc.contributor.author | Wang, H. | |
| dc.contributor.author | Zhu, L. | |
| dc.contributor.author | De Smedt, I. | |
| dc.contributor.author | Jaross, G. | |
| dc.contributor.author | Seftor, C. | |
| dc.contributor.author | Sun, K. | |
| dc.date | 2023 | |
| dc.date.accessioned | 2023-05-17T04:41:35Z | |
| dc.date.available | 2023-05-17T04:41:35Z | |
| dc.identifier.uri | https://orfeo.belnet.be/handle/internal/10993 | |
| dc.description | We describe new publicly available, multi-year formaldehyde (HCHO) data records from the Ozone Mapping and Profiler Suite (OMPS) nadir mapper (NM) instruments on the Suomi NPP and NOAA-20 satellites. The OMPS-NM instruments measure backscattered UV light over the globe once per day, with spatial resolutions close to nadir of 50 × 50 km2 (OMPS/Suomi-NPP) and 17 × 17 km2 or 12 × 17 km2 (OMPS/NOAA-20). After a preliminary instrument line shape and wavelength calibration using on-orbit observations, we use the backscatter measurements in a direct spectral fit of radiances, in combination with a nadir reference spectrum collected over a clean area, to determine slant columns of HCHO. The slant columns are converted to vertical columns using air mass factors (AMFs) derived through scene-by-scene radiative transfer calculations. Finally, a correction is applied to account for background HCHO in the reference spectrum, as well as any remaining high-latitude biases. We investigate the consistency of the OMPS products from Suomi NPP and NOAA-20 using long-term monthly means over 12 geographic regions, and also compare the products with publicly available TROPOMI HCHO observations. OMPS/Suomi-NPP and OMPS/NOAA-20 monthly mean HCHO vertical columns are highly consistent (r = 0.98), with low proportional (2\%) and offset (2 × 1014 molecules cm−2) biases. OMPS HCHO monthly means are also well-correlated with those from TROPOMI (r = 0.92), although they are consistently 10\% ± 16\% larger in polluted regions (columns >8 × 1015 molecules cm−2). These differences result primarily from differences in AMFs. | |
| dc.language | eng | |
| dc.title | Global Formaldehyde Products From the Ozone Mapping and Profiler Suite (OMPS) Nadir Mappers on Suomi NPP and NOAA-20 | |
| dc.type | Article | |
| dc.subject.frascati | Earth and related Environmental sciences | |
| dc.audience | Scientific | |
| dc.subject.free | OMPS | |
| dc.subject.free | JPSS | |
| dc.subject.free | formaldehyde | |
| dc.subject.free | volatile organic compounds | |
| dc.subject.free | Suomi NPP | |
| dc.subject.free | NOAA-20 | |
| dc.source.title | Earth and Space Science | |
| dc.source.volume | 10 | |
| dc.source.issue | 5 | |
| dc.source.page | e2022EA002643 | |
| Orfeo.peerreviewed | Yes | |
| dc.identifier.doi | 10.1029/2022EA002643 | |
| dc.identifier.scopus |
