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@ARTICLE{Fiore:844167,
author = {Fiore, Arlene M. and Fischer, Emily V. and Deolal, Shubha
Pandey and Wild, Oliver and Jaffe, Dan and Staehelin,
Johannes and Clifton, Olivia E. and Milly, George P. and
Bergmann, Dan and Collins, William and Dentener, Frank and
Doherty, Ruth M. and Duncan, Bryan N. and Fischer, Bernd and
Gilge, Stefan and Hess, Peter G. and Horowitz, Larry W. and
Lupu, Alexandru and MacKenzie, Ian and Park, Rokjin and
Ries, Ludwig and Sanderson, Michael and Schultz, Martin and
Shindell, Drew T. and Steinbacher, Martin and Stevenson,
David S. and Szopa, Sophie and Zellweger, Christoph and
Zeng, Guang},
title = {{R}egional and intercontinental pollution signatures on
modeled and measured {PAN} at northern mid-latitude mountain
sites},
journal = {Atmospheric chemistry and physics / Discussions},
volume = {1},
issn = {1680-7367},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {FZJ-2018-01629},
pages = {90},
year = {2018},
abstract = {Peroxy acetyl nitrate (PAN) is the most important reservoir
species for nitrogen oxides (NOx) in the remote troposphere.
Upon decomposition in remote regions, PAN promotes efficient
ozone production. We evaluate monthly mean PAN abundances
from global chemical transport model simulations (HTAP1) for
2001 with measurements from five northern mid-latitude
mountain sites (four European and one North American). The
multi-model mean generally captures the observed monthly
mean PAN but individual models simulate a factor of
~ 4–8 range in monthly abundances. We quantify PAN
source-receptor relationships at the measurement sites with
sensitivity simulations that decrease regional anthropogenic
emissions of PAN (and ozone) precursors by $20 \%$ from
North America (NA), Europe (EU), and East Asia (EA). The
HTAP1 models attribute more of the observed PAN at
Jungfraujoch (Switzerland) to emissions in NA and EA, and
less to EU, than a prior trajectory-based estimate. The
trajectory-based and modeling approaches agree that EU
emissions play a role in the observed springtime PAN maximum
at Jungfraujoch. The signal from anthropogenic emissions on
PAN is strongest at Jungfraujoch and Mount Bachelor (Oregon,
U.S.A.) during April. In this month, PAN source-receptor
relationships correlate both with model differences in
regional anthropogenic volatile organic compound (AVOC)
emissions and with ozone source-receptor relationships. PAN
observations at mountaintop sites can thus provide key
information for evaluating models, including links between
PAN and ozone production and source-receptor relationships.
Establishing routine, long-term, mountaintop measurements is
essential given the large observed interannual variability
in PAN.},
cin = {JSC},
ddc = {550},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {512 - Data-Intensive Science and Federated Computing
(POF3-512) / Earth System Data Exploration (ESDE)},
pid = {G:(DE-HGF)POF3-512 / G:(DE-Juel-1)ESDE},
typ = {PUB:(DE-HGF)16},
doi = {10.5194/acp-2018-90},
url = {https://juser.fz-juelich.de/record/844167},
}