Global Formaldehyde Products From the Ozone Mapping and Profiler Suite (OMPS) Nadir Mappers on Suomi NPP and NOAA-20

Nowlan，Caroline R.1; González Abad，Gonzalo1; Kwon，Hyeong Ahn1,2; Ayazpour，Zolal3; Chan Miller，Christopher1,4; Chance，Kelly1; Chong，Heesung1; Liu，Xiong1; O’Sullivan，Ewan1; Wang，Huiqun1; Zhu，Lei5; De Smedt，Isabelle6; Jaross，Glen7; Seftor，Colin7,8; Sun，Kang3

2023-05-01

10.1029/2022EA002643

Earth and Space Science   影响因子和分区

2333-5084

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 km (OMPS/Suomi-NPP) and 17 × 17 km or 12 × 17 km (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 × 10 molecules cm) 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 × 10 molecules cm). These differences result primarily from differences in AMFs.

formaldehyde JPSS NOAA-20 OMPS Suomi NPP volatile organic compounds

SCI

英语

其他

Science Mission Directorate[80NSSC18K0691];Science Mission Directorate[80NSSC18M0091];Climate Program Office[NA18OAR4310108];

Astronomy & Astrophysics ; Geology

Astronomy & Astrophysics ; Geosciences, Multidisciplinary

WOS:000999809100001

AMER GEOPHYSICAL UNION

2-s2.0-85160404244

Scopus

1.Center for Astrophysics,Harvard & Smithsonian,Cambridge,United States
2.Now at the University of Suwon,Gyeonggi-do,South Korea
3.University at Buffalo,Buffalo,United States
4.Harvard University,Cambridge,United States
5.Southern University of Science and Technology,Shenzhen,China
6.Royal Belgian Institute for Space Aeronomy,Brussels,Belgium
7.NASA Goddard Space Flight Center,Greenbelt,United States
8.Science Systems and Applications,Inc,Lanham,United States

Nowlan，Caroline R.,González Abad，Gonzalo,Kwon，Hyeong Ahn,et al. Global Formaldehyde Products From the Ozone Mapping and Profiler Suite (OMPS) Nadir Mappers on Suomi NPP and NOAA-20[J]. Earth and Space Science,2023,10(5).

Nowlan，Caroline R..,González Abad，Gonzalo.,Kwon，Hyeong Ahn.,Ayazpour，Zolal.,Chan Miller，Christopher.,...&Sun，Kang.(2023).Global Formaldehyde Products From the Ozone Mapping and Profiler Suite (OMPS) Nadir Mappers on Suomi NPP and NOAA-20.Earth and Space Science,10(5).

Nowlan，Caroline R.,et al."Global Formaldehyde Products From the Ozone Mapping and Profiler Suite (OMPS) Nadir Mappers on Suomi NPP and NOAA-20".Earth and Space Science 10.5(2023).