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@ARTICLE{Fiore:4664,
author = {Fiore, A.M. and Dentener, F.J. and Wild, O. and Cuvelier,
C. and Schultz, M. G. and Hess, P. and Textor, C. and
Schulz, M. and Doherty, R.M. and Horowitz, L.W. and
MacKenzie, I.A. and Sanderson, M.G. and Shindell, D.T. and
Stevenson, D.S. and Szopa, S. and Van Dingenen, R. and Zeng,
G. and Atherton, C. and Bergmann, D. and Bey, I. and
Carmichael, G. and Collins, W. J. and Duncan, B. N. and
Faluvegi, G. and Folberth, G. and Gauss, M. and Gong, S. and
Hauglustaine, D. and Holloway, T. and Isaksen, I.S.A. and
Jacob, D.J. and Jonson, J.E. and Kaminski, J.W. and Keating,
T. J. and Lupu, A. and Marmer, E. and Montanaro, V. and
Park, R.J. and Pitari, G. and Pringle, K. J. and Pyle, J.A.
and Schroeder, S. and Vivanco, M.G. and Wind, P. and Wojcik,
G. and Wu, S. and Zuber, A.},
title = {{M}ultimodel estimates of intercontinental source-receptor
relationships for ozone pollution},
journal = {Journal of Geophysical Research},
volume = {114},
issn = {0148-0227},
address = {Washington, DC},
publisher = {Union},
reportid = {PreJuSER-4664},
pages = {1 - 24},
year = {2009},
note = {We are grateful to D. Jaffe and D. Reidmiller (University
of Washington), and to A. Gnanadesikan and R. Stouffer
(GFDL) and three anonymous reviewers for insightful comments
on previous versions of the manuscript. C. A. and D. B. were
supported primarily by the U.S. DOE Atmospheric Science
Program (Office of Science, BER) at LLNL under contract
DE-AC52-07NA27344. R. M. D., I. A. M., and D. S. S.
acknowledge funding from NERC (NE/D012538/1); B.N.D. from
NASA MAP; M. G. S., K.J.P., and W.J.C. from the UK Defra
under contract AQ902 and the Joint DECC and MoD Programme,
(DECC) GA01101 (MoD) $CBC/2B/0417_Annex$ C5; A. L. and J. W.
K. from the Canadian Foundation for Climate and Atmospheric
Sciences, the Ontario Ministry of the Environment, the
Canadian Foundation for Innovation and the Ontario
Innovation Trust; and M. G. V. from the Spanish Ministry of
the Environment. R. J. P. was partly supported by the Korea
Meteorological Administration Research and Development
Program under grant CATER 2007-3205.},
abstract = {Understanding the surface O-3 response over a "receptor"
region to emission changes over a foreign "source" region is
key to evaluating the potential gains from an international
approach to abate ozone (O-3) pollution. We apply an
ensemble of 21 global and hemispheric chemical transport
models to estimate the spatial average surface O-3 response
over east Asia (EA), Europe (EU), North America (NA), and
south Asia (SA) to $20\%$ decreases in anthropogenic
emissions of the O-3 precursors, NOx, NMVOC, and CO
(individually and combined), from each of these regions. We
find that the ensemble mean surface O-3 concentrations in
the base case (year 2001) simulation matches available
observations throughout the year over EU but overestimates
them by > 10 ppb during summer and early fall over the
eastern United States and Japan. The sum of the O-3
responses to NOx, CO, and NMVOC decreases separately is
approximately equal to that from a simultaneous reduction of
all precursors. We define a continental-scale "import
sensitivity" as the ratio of the O-3 response to the $20\%$
reductions in foreign versus "domestic" (i.e., over the
source region itself) emissions. For example, the combined
reduction of emissions from the three foreign regions
produces an ensemble spatial mean decrease of 0.6 ppb over
EU (0.4 ppb from NA), less than the 0.8 ppb from the
reduction of EU emissions, leading to an import sensitivity
ratio of 0.7. The ensemble mean surface O-3 response to
foreign emissions is largest in spring and late fall
(0.7-0.9 ppb decrease in all regions from the combined
precursor reductions in the three foreign regions), with
import sensitivities ranging from 0.5 to 1.1 (responses to
domestic emission reductions are 0.8-1.6 ppb). High O-3
values are much more sensitive to domestic emissions than to
foreign emissions, as indicated by lower import
sensitivities of 0.2 to 0.3 during July in EA, EU, and NA
when O-3 levels are typically highest and by the weaker
relative response of annual incidences of daily maximum 8-h
average O-3 above 60 ppb to emission reductions in a foreign
region(< $10-20\%$ of that to domestic) as compared to the
annual mean response (up to $50\%$ of that to domestic).
Applying the ensemble annual mean results to changes in
anthropogenic emissions from 1996 to 2002, we estimate a
Northern Hemispheric increase in background surface O-3 of
about 0.1 ppb a(-1), at the low end of the 0.1-0.5 ppb a(-1)
derived from observations. From an additional simulation in
which global atmospheric methane was reduced, we infer that
$20\%$ reductions in anthropogenic methane emissions from a
foreign source region would yield an O-3 response in a
receptor region that roughly equals that produced by
combined $20\%$ reductions of anthropogenic NOx, NMVOC, and
CO emissions from the foreign source},
keywords = {J (WoSType)},
cin = {ICG-2},
ddc = {550},
cid = {I:(DE-Juel1)VDB791},
pnm = {Atmosphäre und Klima},
pid = {G:(DE-Juel1)FUEK406},
shelfmark = {Meteorology $\&$ Atmospheric Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000263612000001},
doi = {10.1029/2008JD010816},
url = {https://juser.fz-juelich.de/record/4664},
}