A027-06
Multi-year formaldehyde products from the OMPS Nadir Mappers on Suomi-NPP and NOAA-20
Monday, 7 December 2020: 21:02
Virtual
Caroline R Nowlan1, Gonzalo Gonzalez Abad1, Lei Zhu2,3, Christopher Chan Miller1, Kelly Chance1, Lawrence E Flynn4, Glen R Jaross5, Yeonjin Jung1, Hyeong-Ahn Kwon6, Ewan O'Sullivan1, Colin J Seftor7 and Amir Souri1, (1)Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States, (2)Harvard University, John A. Paulson School of Engineering and Applied Sciences, Cambridge, MA, United States, (3)Southern University of Science and Technology, School of Environmental Science and Engineering, Shenzhen, China, (4)NOAA Center for Satellite Applications and Reserch, STAR, College Park, MD, United States, (5)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (6)Seoul National University, School of Earth and Environmental Sciences, Seoul, Korea, Republic of (South), (7)NASA Goddard SFC, Greenbelt, MD, United States
Abstract:
Formaldehyde is one of the most abundant non-methane volatile organic compounds (NMVOCs) in the troposphere. Enhanced levels of ambient formaldehyde can result from the oxidation of NMVOCs from biogenic, anthropogenic and pyrogenic activities, as well as from direct emission by industrial activity and fires. Formaldehyde can be detected using nadir sounding satellite instruments measuring backscattered light in the ultraviolet. Its short lifetime of a few hours means that formaldehyde measured by satellite instruments can be used as a proxy of NMVOC reactivity, and as a top-down constraint on isoprene emissions.
The Ozone Mapping and Profiler Suite (OMPS) nadir-viewing instruments on the Suomi National Polar-orbiting Partnership (Suomi-NPP) and NOAA-20 satellites operate in the ultraviolet. Our group at the Smithsonian Astrophysical Observatory has developed publicly-available multi-year formaldehyde products for OMPS/Suomi-NPP (2012-present) and OMPS/NOAA-20 (2018-present) using well-established algorithms developed for the Ozone Monitoring Instrument (OMI) operational formaldehyde product and the future Tropospheric Emissions: Monitoring of Pollution (TEMPO) geostationary instrument. We present these OMPS formaldehyde retrievals, validation with airborne and ground-based observations, and inter-comparisons with formaldehyde derived from other satellites.
