Simulation of in situ ultrafine particle formation in the eastern United States using PMCAMx-UF. Jung, J., Fountoukis, C., Adams, P., J., & Pandis, S., N. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2, 2010. abstract bibtex A three-dimensional chemical transport model has been developed
incorporating the Dynamic Model for Aerosol Nucleation for the
simulation of aerosol dynamics into the regional model PMCAMx. Using a
scaled version of the ternary H2SO4-NH3-H2O nucleation theory and the
Two Moment Aerosol Sectional algorithm, the new model (PMCAMx-UF) is
used to simulate a summertime period in the eastern United States. The
model predicts, in agreement with observations, frequent nucleation
events that take place over hundreds to thousands of kilometers,
especially in the northeastern United States. Detailed comparison with
the observations of the Pittsburgh Air Quality Study suggests that the
model reproduces reasonably well the details of the events in this
sulfur rich area but has a tendency to overpredict the frequency of the
events. Regional nucleation is predicted to increase the total number
concentrations by roughly a factor of 2.5 over the whole domain. The
corresponding increases for particles larger than 10 nm (N-10) and 100
nm (N-100) were 75% and 15%, respectively. In the Ohio River Valley
the increases are as much as a factor of 10 for total particle number
and 40% for N-100. Contrary to the total particle concentration,
increases of N-100 take place often in areas different than those of
the nucleation events. Nucleation is predicted to decrease the N-100 in
some areas even if it increases the total number concentration. The
sensitivity of the model to the nucleation rate scaling parameter and
the ammonia levels is discussed.
@article{
title = {Simulation of in situ ultrafine particle formation in the eastern United States using PMCAMx-UF},
type = {article},
year = {2010},
identifiers = {[object Object]},
volume = {115},
month = {2},
id = {a7810989-96f3-3e7b-a7aa-56c3e690c9ef},
created = {2014-10-08T16:28:18.000Z},
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last_modified = {2017-03-14T17:32:24.802Z},
read = {false},
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citation_key = {Jung.jgra.2010a},
source_type = {article},
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abstract = {A three-dimensional chemical transport model has been developed
incorporating the Dynamic Model for Aerosol Nucleation for the
simulation of aerosol dynamics into the regional model PMCAMx. Using a
scaled version of the ternary H2SO4-NH3-H2O nucleation theory and the
Two Moment Aerosol Sectional algorithm, the new model (PMCAMx-UF) is
used to simulate a summertime period in the eastern United States. The
model predicts, in agreement with observations, frequent nucleation
events that take place over hundreds to thousands of kilometers,
especially in the northeastern United States. Detailed comparison with
the observations of the Pittsburgh Air Quality Study suggests that the
model reproduces reasonably well the details of the events in this
sulfur rich area but has a tendency to overpredict the frequency of the
events. Regional nucleation is predicted to increase the total number
concentrations by roughly a factor of 2.5 over the whole domain. The
corresponding increases for particles larger than 10 nm (N-10) and 100
nm (N-100) were 75% and 15%, respectively. In the Ohio River Valley
the increases are as much as a factor of 10 for total particle number
and 40% for N-100. Contrary to the total particle concentration,
increases of N-100 take place often in areas different than those of
the nucleation events. Nucleation is predicted to decrease the N-100 in
some areas even if it increases the total number concentration. The
sensitivity of the model to the nucleation rate scaling parameter and
the ammonia levels is discussed.},
bibtype = {article},
author = {Jung, JaeGun and Fountoukis, Christos and Adams, Peter J and Pandis, Spyros N},
journal = {JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES}
}
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Using a\nscaled version of the ternary H2SO4-NH3-H2O nucleation theory and the\nTwo Moment Aerosol Sectional algorithm, the new model (PMCAMx-UF) is\nused to simulate a summertime period in the eastern United States. The\nmodel predicts, in agreement with observations, frequent nucleation\nevents that take place over hundreds to thousands of kilometers,\nespecially in the northeastern United States. Detailed comparison with\nthe observations of the Pittsburgh Air Quality Study suggests that the\nmodel reproduces reasonably well the details of the events in this\nsulfur rich area but has a tendency to overpredict the frequency of the\nevents. Regional nucleation is predicted to increase the total number\nconcentrations by roughly a factor of 2.5 over the whole domain. The\ncorresponding increases for particles larger than 10 nm (N-10) and 100\nnm (N-100) were 75% and 15%, respectively. In the Ohio River Valley\nthe increases are as much as a factor of 10 for total particle number\nand 40% for N-100. Contrary to the total particle concentration,\nincreases of N-100 take place often in areas different than those of\nthe nucleation events. Nucleation is predicted to decrease the N-100 in\nsome areas even if it increases the total number concentration. The\nsensitivity of the model to the nucleation rate scaling parameter and\nthe ammonia levels is discussed.","bibtype":"article","author":"Jung, JaeGun and Fountoukis, Christos and Adams, Peter J and Pandis, Spyros N","journal":"JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES","bibtex":"@article{\n title = {Simulation of in situ ultrafine particle formation in the eastern United States using PMCAMx-UF},\n type = {article},\n year = {2010},\n identifiers = {[object Object]},\n volume = {115},\n month = {2},\n id = {a7810989-96f3-3e7b-a7aa-56c3e690c9ef},\n created = {2014-10-08T16:28:18.000Z},\n file_attached = {false},\n profile_id = {363623ef-1990-38f1-b354-f5cdaa6548b2},\n group_id = {02267cec-5558-3876-9cfc-78d056bad5b9},\n last_modified = {2017-03-14T17:32:24.802Z},\n read = {false},\n starred = {false},\n authored = {false},\n confirmed = {true},\n hidden = {false},\n citation_key = {Jung.jgra.2010a},\n source_type = {article},\n private_publication = {false},\n abstract = {A three-dimensional chemical transport model has been developed\nincorporating the Dynamic Model for Aerosol Nucleation for the\nsimulation of aerosol dynamics into the regional model PMCAMx. Using a\nscaled version of the ternary H2SO4-NH3-H2O nucleation theory and the\nTwo Moment Aerosol Sectional algorithm, the new model (PMCAMx-UF) is\nused to simulate a summertime period in the eastern United States. The\nmodel predicts, in agreement with observations, frequent nucleation\nevents that take place over hundreds to thousands of kilometers,\nespecially in the northeastern United States. Detailed comparison with\nthe observations of the Pittsburgh Air Quality Study suggests that the\nmodel reproduces reasonably well the details of the events in this\nsulfur rich area but has a tendency to overpredict the frequency of the\nevents. Regional nucleation is predicted to increase the total number\nconcentrations by roughly a factor of 2.5 over the whole domain. The\ncorresponding increases for particles larger than 10 nm (N-10) and 100\nnm (N-100) were 75% and 15%, respectively. In the Ohio River Valley\nthe increases are as much as a factor of 10 for total particle number\nand 40% for N-100. Contrary to the total particle concentration,\nincreases of N-100 take place often in areas different than those of\nthe nucleation events. Nucleation is predicted to decrease the N-100 in\nsome areas even if it increases the total number concentration. 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