Articles | Volume 18, issue 8
Atmos. Chem. Phys., 18, 5483–5497, 2018
https://doi.org/10.5194/acp-18-5483-2018
Atmos. Chem. Phys., 18, 5483–5497, 2018
https://doi.org/10.5194/acp-18-5483-2018

Research article 23 Apr 2018

Research article | 23 Apr 2018

High-resolution inversion of OMI formaldehyde columns to quantify isoprene emission on ecosystem-relevant scales: application to the southeast US

Jennifer Kaiser et al.

Data sets

OMI/Aura Formaldehyde (HCHO) Total Column 1-orbit L2 Swath 13x24 km V003 Kelly Chance https://doi.org/10.5067/Aura/OMI/DATA2015

SEAC4RS Field Campaign Data SEAC4RS Science Team https://doi.org/10.5067/aircraft/seac4rs/aerosol-tracegas-cloud

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Short summary
Isoprene emissions from vegetation have a large effect on atmospheric chemistry and air quality. Here we use the adjoint of GEOS-Chem in an inversion of OMI formaldehyde observations to produce top-down estimates of isoprene emissions in the southeast US during the summer of 2013. We find that MEGAN v2.1 is biased high on average by 40 %. Our downward correction of isoprene emissions leads to a small reduction in modeled surface O3 and decreases the contribution of isoprene to organic aerosol.
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