% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Franco:894240,
author = {Franco, B. and Blumenstock, T. and Cho, C. and Clarisse, L.
and Clerbaux, C. and Coheur, P.-F. and De Mazière, M. and
De Smedt, I. and Dorn, H.-P. and Emmerichs, T. and Fuchs, H.
and Gkatzelis, Georgios and Griffith, D. W. T. and Gromov,
S. and Hannigan, J. W. and Hase, F. and Hohaus, T. and
Jones, N. and Kerkweg, A. and Kiendler-Scharr, A. and
Lutsch, E. and Mahieu, E. and Novelli, A. and Ortega, I. and
Paton-Walsh, C. and Pommier, M. and Pozzer, A. and Reimer,
D. and Rosanka, S. and Sander, R. and Schneider, M. and
Strong, K. and Tillmann, R. and Van Roozendael, M. and
Vereecken, L. and Vigouroux, C. and Wahner, A. and
Taraborrelli, D.},
title = {{U}biquitous atmospheric production of organic acids
mediated by cloud droplets},
journal = {Nature},
volume = {593},
number = {7858},
issn = {1476-4687},
address = {London [u.a.]},
publisher = {Nature Publ. Group},
reportid = {FZJ-2021-03120},
pages = {233 - 237},
year = {2021},
abstract = {Atmospheric acidity is increasingly determined by carbon
dioxide and organic acids1,2,3. Among the latter, formic
acid facilitates the nucleation of cloud droplets4 and
contributes to the acidity of clouds and rainwater1,5. At
present, chemistry–climate models greatly underestimate
the atmospheric burden of formic acid, because key processes
related to its sources and sinks remain poorly
understood2,6,7,8,9. Here we present atmospheric chamber
experiments that show that formaldehyde is efficiently
converted to gaseous formic acid via a multiphase pathway
that involves its hydrated form, methanediol. In warm cloud
droplets, methanediol undergoes fast outgassing but slow
dehydration. Using a chemistry–climate model, we estimate
that the gas-phase oxidation of methanediol produces up to
four times more formic acid than all other known chemical
sources combined. Our findings reconcile model predictions
and measurements of formic acid abundance. The additional
formic acid burden increases atmospheric acidity by reducing
the pH of clouds and rainwater by up to 0.3. The diol
mechanism presented here probably applies to other aldehydes
and may help to explain the high atmospheric levels of other
organic acids that affect aerosol growth and cloud
evolution.},
cin = {IEK-8},
ddc = {500},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {2111 - Air Quality (POF4-211)},
pid = {G:(DE-HGF)POF4-2111},
typ = {PUB:(DE-HGF)16},
pubmed = {33981052},
UT = {WOS:000649848600015},
doi = {10.1038/s41586-021-03462-x},
url = {https://juser.fz-juelich.de/record/894240},
}