acetone–co enhancement ratios in the upper troposphere based on 7 years of caribic data: new insights and estimates of regional acetone fluxes
Clicks: 183
ID: 146553
2017
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This
article has not been analysed, so there is no overall score —
reader engagement is measured and shown alongside.
Reader Engagement
Emerging Content
30.0
/100
183 views
22 readers
AI Quality Assessment
Not analyzed
Readership in this journal
EmergingRanked #257 of 850 articles by views in Journal of agricultural and food chemistry
Most read
Least read
Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 850 in total.
Mint this article as an NFT
Not yet mintedCreate a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.
5
SUSD
one-off · no wallet required
Abstract
Acetone and carbon monoxide (CO) are two important trace gases controlling
the oxidation capacity of the troposphere; enhancement ratios (EnRs) are
useful in assessing their sources and fate between emission and sampling,
especially in pollution plumes. In this study, we focus on in situ data from
the upper troposphere recorded by the passenger-aircraft-based IAGOS–CARIBIC
(In-service Aircraft for a Global Observing System–Civil Aircraft for the
Regular Investigation of the atmosphere Based on an Instrument Container)
observatory over the periods 2006–2008 and 2012–2015. This dataset is used
to investigate the seasonal and spatial variation of acetone–CO EnRs.
Furthermore, we utilize a box model accounting for dilution, chemical
degradation and secondary production of acetone from precursors. In former
studies, increasing acetone–CO EnRs in a plume were associated with
secondary production of acetone. Results of our box model question this
common presumption and show increases of acetone–CO EnR over time without
taking secondary production of acetone into account. The temporal evolution
of EnRs in the upper troposphere, especially in summer, is not negligible and
impedes the interpretation of EnRs as a means for partitioning of acetone and
CO sources in the boundary layer. In order to ensure that CARIBIC EnRs
represent signatures of source regions with only small influences by dilution
and chemistry, we limit our analysis to temporal and spatial coherent events
of high-CO enhancement. We mainly focus on North America and Southeast Asia
because of their different mix of pollutant sources and the good data
coverage. For both regions, we find the expected seasonal variation in
acetone–CO EnRs with maxima in summer, but with higher amplitude over North
America. We derive mean (± standard deviation) annual acetone fluxes of
(53 ± 27) 10−13 kg m−2 s−1 and
(185 ± 80) 10−13 kg m−2 s−1 for North America and
Southeast Asia, respectively. The derived flux for North America is
consistent with the inventories, whereas Southeast Asia acetone emissions
appear to be underestimated by the inventories.
| Reference Key |
fischbeck2017atmosphericacetoneco
Use this key to autocite in the manuscript while using
SciMatic Manuscript Manager or Thesis Manager
|
|---|---|
| Authors | ;G. Fischbeck;H. Bönisch;M. Neumaier;C. A. M. Brenninkmeijer;J. Orphal;J. Brito;J. Becker;D. Sprung;P. F. J. van Velthoven;A. Zahn |
| Journal | Journal of agricultural and food chemistry |
| Year | 2017 |
| DOI |
10.5194/acp-17-1985-2017
|
| URL | |
| Keywords |
Citations
No citations found. To add a citation, contact the admin at info@scimatic.org
Comments
No comments yet. Be the first to comment on this article.