Publikasjoner
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Gkatzelis, Georgios I.; Coggon, Matthew M.; Stockwell, Chelsea E.; Hornbrook, Rebecca S.; Allen, Hannah & Apel, Eric C.
[Vis alle 65 forfattere av denne artikkelen]
(2024).
Parameterizations of US wildfire and prescribed fire emission ratios and emission factors based on FIREX-AQ aircraft measurements.
Atmospheric Chemistry and Physics (ACP).
ISSN 1680-7316.
24(2),
s. 929–956.
doi:
10.5194/acp-24-929-2024.
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Tan, Wen; Zhu, Liang; Mikoviny, Tomas; Nielsen, Claus Jørgen; Wisthaler, Armin & D'Anna, Barbara
[Vis alle 13 forfattere av denne artikkelen]
(2023).
Experimental and Theoretical Study of the OH-Initiated Degradation of Piperidine under Simulated Atmospheric Conditions.
Journal of Physical Chemistry A.
ISSN 1089-5639.
128(14),
s. 2789–2814.
doi:
10.1021/acs.jpca.3c08415.
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Geetha, Anjitha Sarachandra Kumar; Mikoviny, Tomas; Piel, Felix Maximilian & Wisthaler, Armin
(2023).
Room temperature rate coefficients for the reaction of chlorine atoms with a series of volatile methylsiloxanes (L<inf>2</inf>-L<inf>5</inf>, D<inf>3</inf>-D<inf>6</inf>).
International Journal of Chemical Kinetics.
ISSN 0538-8066.
55(9),
s. 570–576.
doi:
10.1002/kin.21657.
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Håland, Alexander; Mikoviny, Tomas; Syse, Elisabeth Emilie & Wisthaler, Armin
(2022).
On the development of a new prototype PTR-ToF-MS instrument and its application to the detection of atmospheric amines.
Atmospheric Measurement Techniques.
ISSN 1867-1381.
15(21),
s. 6297–6307.
doi:
10.5194/amt-15-6297-2022.
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Bunkan, Arne Joakim Coldevin; Reijrink, Nina Gwendolyn; Mikoviny, Tomas; Müller, Markus; Nielsen, Claus Jørgen & Zhu, Liang
(2022).
Atmospheric Chemistry of N-Methylmethanimine (CH<inf>3</inf>N=CH<inf>2</inf>): A Theoretical and Experimental Study.
Journal of Physical Chemistry A.
ISSN 1089-5639.
126(20),
s. 3247–3264.
doi:
10.1021/acs.jpca.2c01925.
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Kim, Saewung; Seco, R.; Gu, Dasa; Sanchez, Dianne; Jeong, Daun & Guenther, Alex B.
[Vis alle 25 forfattere av denne artikkelen]
(2021).
The role of a suburban forest in controlling vertical trace gas and OH reactivity distributions-A case study for the Seoul metropolitan area.
Faraday discussions.
ISSN 1359-6640.
226,
s. 537–550.
doi:
10.1039/d0fd00081g.
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Simpson, Isobel J.; Blake, Donald R.; Blake, Nicola J.; Meinardi, Simone; Barletta, Barbara & Hughes, Stacey C.
[Vis alle 27 forfattere av denne artikkelen]
(2020).
Characterization, sources and reactivity of volatile organic compounds (VOCs) in Seoul and surrounding regions during KORUS-AQ.
Elementa: Science of the Anthropocene.
ISSN 2325-1026.
8.
doi:
10.1525/elementa.434.
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Fried, Alan; Walega, James; Weibring, Petter; Richter, Dirk; Simpson, Isobel J. & Blake, Donald R.
[Vis alle 35 forfattere av denne artikkelen]
(2020).
Airborne formaldehyde and volatile organic compound measurements over the Daesan petrochemical complex on Korea’s northwest coast during the Korea-United States Air Quality study: Estimation of emission fluxes and effects on air quality.
Elementa: Science of the Anthropocene.
ISSN 2325-1026.
8:121(1),
s. 1–28.
doi:
10.1525/elementa.2020.121.
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Antonsen, Simen Gjelseth; Bunkan, Arne Joakim Coldevin; Mikoviny, Tomas; Nielsen, Claus Jørgen; Stenstrøm, Yngve H. & Wisthaler, Armin
(2020).
Atmospheric Chemistry of Methyl Isocyanide – an Experimental and Theoretical Study.
Journal of Physical Chemistry A.
ISSN 1089-5639.
124(32),
s. 6562–6571.
doi:
10.1021/acs.jpca.0c05127.
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Antonsen, Simen Gjelseth; Bunkan, Arne Joakim Coldevin; Mikoviny, Tomas; Nielsen, Claus Jørgen; Stenstrøm, Yngve H. & Wisthaler, Armin
(2020).
Atmospheric chemistry of diazomethane – an experimental and theoretical study.
Molecular Physics.
ISSN 0026-8976.
s. 1–8.
doi:
10.1080/00268976.2020.1718227.
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Chen, Xin; Millet, Dylan B.; Singh, Hanwant B.; Wisthaler, Armin; Apel, Eric C. & Atlas, Elliot L.
[Vis alle 34 forfattere av denne artikkelen]
(2019).
On the sources and sinks of atmospheric VOCs: an integratedanalysis of recent aircraft campaigns over North America.
Atmospheric Chemistry and Physics (ACP).
ISSN 1680-7316.
19(14),
s. 9097–9123.
doi:
10.5194/acp-19-9097-2019.
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Vis sammendrag
We apply a high-resolution chemical transport model (GEOS-Chem CTM) with updated treatment of volatile organic compounds (VOCs) and a comprehensive suite of airborne datasets over North America to (i) characterize the VOC budget and (ii) test the ability of current models to capture the distribution and reactivity of atmospheric VOCs over this region. Biogenic emissions dominate the North American VOC budget in the model, accounting for 70 % and 95 % of annually emitted VOC carbon and reactivity, respectively. Based on current inventories anthropogenic emissions have declined to the point where biogenic emissions are the dominant summertime source of VOC reactivity even in most major North American cities. Methane oxidation is a 2× larger source of nonmethane VOCs (via production of formaldehyde and methyl hydroperoxide) over North America in the model than are anthropogenic emissions. However, anthropogenic VOCs account for over half of the ambient VOC loading over the majority of the region owing to their longer aggregate lifetime. Fires can be a significant VOC source episodically but are small on average. In the planetary boundary layer (PBL), the model exhibits skill in capturing observed variability in total VOC abundance (R2=0.36) and reactivity (R2=0.54). The same is not true in the free troposphere (FT), where skill is low and there is a persistent low model bias (∼ 60 %), with most (27 of 34) model VOCs underestimated by more than a factor of 2. A comparison of PBL : FT concentration ratios over the southeastern US points to a misrepresentation of PBL ventilation as a contributor to these model FT biases. We also find that a relatively small number of VOCs (acetone, methanol, ethane, acetaldehyde, formaldehyde, isoprene + oxidation products, methyl hydroperoxide) drive a large fraction of total ambient VOC reactivity and associated model biases; research to improve understanding of their budgets is thus warranted. A source tracer analysis suggests a current overestimate of biogenic sources for hydroxyacetone, methyl ethyl ketone and glyoxal, an underestimate of biogenic formic acid sources, and an underestimate of peroxyacetic acid production across biogenic and anthropogenic precursors. Future work to improve model representations of vertical transport and to address the VOC biases discussed are needed to advance predictions of ozone and SOA formation.
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Piel, Felix; Muller, Markus; Mikoviny, Tomas; Pusede, Sally E. & Wisthaler, Armin
(2019).
Airborne measurements of particulate organic matter by proton-transfer-reaction mass spectrometry (PTR-MS): a pilot study.
Atmospheric Measurement Techniques.
ISSN 1867-1381.
12(11),
s. 5947–5958.
doi:
10.5194/amt-12-5947-2019.
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Schripp, Tobias; Anderson, Bruce; Crosbie, Ewan C.; Moore, Richard; Herrmann, Friederike & Oßwald, Patrick
[Vis alle 14 forfattere av denne artikkelen]
(2018).
Impact of Alternative Jet Fuels on Engine Exhaust Composition during the 2015 ECLIF Ground-Based Measurements Campaign.
Environmental Science and Technology.
ISSN 0013-936X.
52(8),
s. 4969–4978.
doi:
10.1021/acs.est.7b06244.
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Tan, Wen; Zhu, Liang; Mikoviny, Tomas; Nielsen, Claus Jørgen; Wisthaler, Armin & Eichler, Philipp
[Vis alle 14 forfattere av denne artikkelen]
(2018).
Theoretical and experimental study on the reaction of tert-butylamine with OH radicals in the atmosphere.
Journal of Physical Chemistry A.
ISSN 1089-5639.
122(18),
s. 4470–4480.
doi:
10.1021/acs.jpca.8b01862.
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Lakey, PSJ; Wisthaler, Armin; Berkemeier, T; Mikoviny, Tomas; Poschl, U & Shiraiwa, M.
(2017).
Chemical kinetics of multiphase reactions between ozone and human skin lipids: Implications for indoor air quality and health effects.
Indoor Air.
ISSN 0905-6947.
27(4),
s. 816–828.
doi:
10.1111/ina.12360.
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Zhu, Liang; Mikoviny, Tomas; Wisthaler, Armin & Nielsen, Claus Jørgen
(2017).
A Sampling Line Artifact in Stack Emission Measurement of Alkanolamine-enabled Carbon Capture Facility: Surface Reaction of Amines with Formaldehyde.
Energy Procedia.
ISSN 1876-6102.
114,
s. 1022–1025.
doi:
10.1016/j.egypro.2017.03.1247.
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Fisher, Jenny A.; Jacob, Daniel J.; Travis, Katherine R.; Kim, Patrick S.; Marais, Eloise A. & Miller, Christopher Chan
[Vis alle 34 forfattere av denne artikkelen]
(2016).
Organic nitrate chemistry and its implications for nitrogen budgets in an isoprene- and monoterpene-rich atmosphere: Constraints from aircraft (SEAC4RS) and ground-based (SOAS) observations in the Southeast US.
Atmospheric Chemistry and Physics (ACP).
ISSN 1680-7316.
16(9),
s. 5969–5991.
doi:
10.5194/acp-16-5969-2016.
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Bunkan, Arne Joakim Coldevin; Mikoviny, Tomas; Nielsen, Claus Jørgen; Wisthaler, Armin & Zhu, Liang
(2016).
Experimental and Theoretical Study of the OH-Initiated Photo-oxidation of Formamide.
Journal of Physical Chemistry A.
ISSN 1089-5639.
120(8),
s. 1222–1230.
doi:
10.1021/acs.jpca.6b00032.
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Yu, Karen; Jacob, Daniel J.; Fisher, Jenny A.; Kim, Patrick S.; Marais, Eloise A. & Miller, Christopher C.
[Vis alle 17 forfattere av denne artikkelen]
(2016).
Sensitivity to grid resolution in the ability of a chemical transport model to simulate observed oxidant chemistry under high-isoprene conditions.
Atmospheric Chemistry and Physics (ACP).
ISSN 1680-7316.
16(7),
s. 4369–4378.
doi:
10.5194/acp-16-4369-2016.
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Müller, Markus; Anderson, Bruce E; Beyersdorf, Andreas J.; Crawford, J.H; Diskin, Glenn S. & Eichler, Philipp
[Vis alle 15 forfattere av denne artikkelen]
(2016).
In situ measurements and modeling of reactive trace gases in a small biomass burning plume.
Atmospheric Chemistry and Physics (ACP).
ISSN 1680-7316.
16(6),
s. 3813–3824.
doi:
10.5194/acp-16-3813-2016.
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Hu, Weiwei; Campuzano-Jost, Pedro; Palm, Brett B.; Day, Douglas A.; Ortega, Amber M. & Hayes, Patrick L.
[Vis alle 40 forfattere av denne artikkelen]
(2015).
Characterization of a real-time tracer for isoprene epoxydiols-derived secondary organic aerosol (IEPOX-SOA) from aerosol mass spectrometer measurements.
Atmospheric Chemistry and Physics (ACP).
ISSN 1680-7316.
15(20),
s. 11807–11833.
doi:
10.5194/acp-15-11807-2015.
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Emmons, Louisa K.; Arnold, Steve R.; Monks, Sarah A.; Huijnen, Vincent; Tilmes, Simone & Law, Katherine S.
[Vis alle 36 forfattere av denne artikkelen]
(2015).
The POLARCAT Model Intercomparison Project (POLMIP): Overview and evaluation with observations.
Atmospheric Chemistry and Physics (ACP).
ISSN 1680-7316.
15(12),
s. 6721–6744.
doi:
10.5194/acp-15-6721-2015.
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Bunkan, Arne Joakim Coldevin; Hetzler, Jens; Mikoviny, Tomas; Wisthaler, Armin; Nielsen, Claus Jørgen & Olzmann, Matthias
(2015).
The reactions of N-methylformamide and N,N-dimethylformamide with OH and their photo-oxidation under atmospheric conditions: experimental and theoretical studies.
Physical Chemistry, Chemical Physics - PCCP.
ISSN 1463-9076.
17(10),
s. 7046–7059.
doi:
10.1039/C4CP05805D.
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Müller, M; Mikoviny, Tomas; Feil, S; Haidacher, S.; Hanel, G. & Hartungen, E.
[Vis alle 13 forfattere av denne artikkelen]
(2014).
A compact PTR-ToF-MS instrument for airborne measurements of volatile organic compounds at high spatiotemporal resolution.
Atmospheric Measurement Techniques.
ISSN 1867-1381.
7(11),
s. 3763–3772.
doi:
10.5194/amt-7-3763-2014.
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Müller, Markus; Mikoviny, Tomas & Wisthaler, Armin
(2014).
Detector aging induced mass discrimination and non-linearity effects in PTR-ToF-MS.
International Journal of Mass Spectrometry.
ISSN 1387-3806.
365-366,
s. 93–97.
doi:
10.1016/j.ijms.2013.12.008.
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Maguta, Mihayo Musabila; Aursnes, Marius; Bunkan, Arne Joakim Coldevin; Edelen, Katie; Mikoviny, Tomas & Nielsen, Claus Jørgen
[Vis alle 8 forfattere av denne artikkelen]
(2014).
Atmospheric fate of nitramines: An experimental and theoretical study of the OH reactions with CH<sub>3</sub>NHNO<sub>2</sub> and (CH<sub>3</sub>) <sub>2</sub>NNO<sub>2</sub>.
Journal of Physical Chemistry A.
ISSN 1089-5639.
118(19),
s. 3450–3462.
doi:
10.1021/jp500305w.
Se alle arbeider i Cristin
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Weber, Ulrich Wolfgang; Kampman, Niko; Mikoviny, Tomas; Thomassen, Jorgen & Sundal, Anja
(2021).
Noble Gases as Monitoring Tracers in CCS: A Case study with CO2 from the Waste-To-Energy Plant Klemetsrud, Norway.
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Hak, Claudia; Vogt, Matthias; Dauge, Franck Rene; Fjellheim, Øystein; Holøs, Sverre Bjørn & Yang, Aileen
[Vis alle 8 forfattere av denne artikkelen]
(2019).
P-4 Formation of ultrafine particles in a classroom under different ventilation conditions.
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Publisert
17. feb. 2015 08:11
- Sist endret
17. feb. 2015 08:14