Importance of secondary sources in the atmospheric budgets of formic and acetic acids
Why is this work in the frame?
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
No Canadian affiliation. An affiliation-only frame — the usual design — would never have seen this work. It is one of the works that make the case for inverting the frame.
Machine scores (provisional)
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
- Teacher spread
- 0.178 · how far apart the two teachers sit on this one work
- Validation status
score_only:v0-immature-baseline· verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it
Abstract
Abstract. We present a detailed budget of formic and acetic acids, two of the most abundant trace gases in the atmosphere. Our bottom-up estimate of the global source of formic and acetic acids are ~1200 and ~1400 Gmol yr−1, dominated by photochemical oxidation of biogenic volatile organic compounds, in particular isoprene. Their sinks are dominated by wet and dry deposition. We use the GEOS-Chem chemical transport model to evaluate this budget against an extensive suite of measurements from ground, ship and satellite-based Fourier transform spectrometers, as well as from several aircraft campaigns over North America. The model captures the seasonality of formic and acetic acids well but generally underestimates their concentration, particularly in the Northern midlatitudes. We infer that the source of both carboxylic acids may be up to 50% greater than our estimate and report evidence for a long-lived missing secondary source of carboxylic acids that may be associated with the aging of organic aerosols. Vertical profiles of formic acid in the upper troposphere support a negative temperature dependence of the reaction between formic acid and the hydroxyl radical as suggested by several theoretical studies.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
The record
- Venue
- Atmospheric chemistry and physics
- Topic
- Atmospheric chemistry and aerosols
- Field
- Earth and Planetary Sciences
- Canadian institutions
- —
- Funders
- National Centre for Earth ObservationOffice of Polar ProgramsCanadian Space AgencyNatural Environment Research CouncilSight Research UKNational Oceanic and Atmospheric AdministrationDeutsche ForschungsgemeinschaftBelgian Federal Science Policy OfficeJet Propulsion LaboratoryCalifornia Institute of TechnologyNational Aeronautics and Space AdministrationNational Center for Atmospheric ResearchNational Science Foundation
- Keywords
- Formic acidIsopreneTroposphereChemistryAcetic acidTrace gasAtmosphere (unit)Atmospheric chemistryEnvironmental chemistryAtmospheric sciencesOzoneMeteorologyOrganic chemistryGeology
- Has abstract in OpenAlex
- yes