Browsing Kjemisk institutt by Author "Wisthaler, Armin"

Now showing items 21-40 of 59

  • Degradation and emission results of amine plant operations from MEA testing at the CO2 technology centre Mongstad 
    Morken, Anne Kolstad; Pedersen, Steinar; Kleppe, Eirik Romslo; Wisthaler, Armin; Vernstad, Kai; Ullestad, Øyvind; Flø, Nina Enaasen; Faramarzi, Leila; Hamborg, Espen Steinseth (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    In 2015, the CO2 Technology Centre Mongstad (TCM DA), operated a test campaign using aqueous monoethanolamine (MEA) solvent at 30 wt%. The main objective was to demonstrate and document the performance of the TCM DA Amine ...
  • Effect of demand-controlled ventilation strategies on indoor air pollutants in a classroom: A Norwegian case study 
    Yang, Aileen; Andersen, Kamilla Heimar; Hak, Claudia; Mikoviny, Tomas; Wisthaler, Armin; Holøs, Sverre Bjørn (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract The choice of the minimum ventilation rate (V min ) in a demand-controlled ventilation strategy can influence energy demand but also introduce outdoor air pollutants. The latter may have direct health ...
  • Estimating Source Region Influences on Black Carbon Abundance, Microphysics, and Radiative Effect Observed Over South Korea 
    Lamb, Kara D.; Perring, Anne E.; Samset, Bjørn Hallvard; Peterson, Dave; Davis, Sean; Anderson, Bruce E.; Beyersdorf, Andreas; Blake, Donald R; Campuzano-Jost, Pedro; Corr, Chelsea A.; Diskin, Glenn S.; Kondo, Yutaka; Moteki, Nobuhiro; Nault, Benjamin A.; Oh, Jun; Park, Minsu; Pusede, Sally E.; Simpson, Isobel J.; Thornhill, Kenneth L.; Wisthaler, Armin; Schwarz, Joshua P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    East Asia is the strongest global source region for anthropogenic black carbon (BC), the mostimportant light-absorbing aerosol contributing to direct radiative climate forcing. To provide extendedobservational constraints ...
  • Evaluating the Impact of Chemical Complexity and Horizontal Resolution on Tropospheric Ozone Over the Conterminous US With a Global Variable Resolution Chemistry Model 
    Schwantes, Rebecca H.; Lacey, Forrest G.; Tilmes, Simone; Emmons, Louisa K.; Lauritzen, Peter H.; Walters, Stacy; Callaghan, Patrick; Zarzycki, Colin M.; Barth, Mary C.; Jo, Duseong S.; Bacmeister, Julio T.; Neale, Richard B.; Vitt, Francis; Kluzek, Erik; Roozitalab, Behrooz; Hall, Samuel R.; Ullmann, Kirk; Warneke, Carsten; Peischl, Jeff; Pollack, Ilana B.; Flocke, Frank; Wolfe, Glenn M.; Hanisco, Thomas F.; Keutsch, Frank N.; Kaiser, Jennifer; Bui, Thao Paul V.; Jimenez, Jose L.; Campuzano-Jost, Pedro; Apel, Eric C.; Hornbrook, Rebecca S.; Hills, Alan J.; Yuan, Bin; Wisthaler, Armin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    A new configuration of the Community Earth System Model (CESM)/Community Atmosphere Model with full chemistry (CAM-chem) supporting the capability of horizontal mesh refinement through the use of the spectral element (SE) ...
  • Evaluation of Secondary Organic Aerosol (SOA) Simulations for Seoul, Korea 
    Oak, Yujin J.; Park, Rokjin J.; Jo, Duseong S.; Hodzic, Alma; Jimenez, Jose L.; Campuzano-Jost, Pedro; Nault, Benjamin A.; Kim, Hwajin; Kim, Hyeonmin; Ha, Eunjo S.; Song, Chang-Keun; Yi, Seung-Muk; Diskin, Glenn S.; Weinheimer, Andrew J.; Blake, Donald R.; Wisthaler, Armin; Shim, Mihee; Shin, Yoonmi (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Organic aerosols (OA) represent a significant fraction of total submicron particulate matter (PM1) concentrations globally, including densely populated megacities such as Seoul. However, scientific understanding of the ...
  • Evaluation of simulated O3 production efficiency during the KORUS-AQ campaign: Implications for anthropogenic NOx emissions in Korea 
    Oak, Yujin J.; Park, Rokjin J; Schroeder, Jason R.; Crawford, James H.; Blake, Donald R.; Weinheimer, Andrew J.; Woo, Jung-Hun; Kim, Sang-Woo; Yeo, Huidong; Fried, Alan; Wisthaler, Armin; Brune, William H. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    We examine O3 production and its sensitivity to precursor gases and boundary layer mixing in Korea by using a 3-D global chemistry transport model and extensive observations during the KORea-US cooperative Air Quality field ...
  • Experimental and Theoretical Study of the OH-Initiated Degradation of Piperazine under Simulated Atmospheric Conditions 
    Tan, Wen; Zhu, Liang; Mikoviny, Tomas; Nielsen, Claus Jørgen; Wisthaler, Armin; D´Anna, Barbara; Antonsen, Simen Gjelseth; Stenstrøm, Yngve H.; Farren, Naomi J.; Hamilton, Jacqueline F.; Boustead, Graham A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    The OH-initiated photo-oxidation of piperazine and 1-nitropiperazine as well as the photolysis of 1-nitrosopiperazine were investigated in a large atmospheric simulation chamber. The rate coefficient for the reaction of ...
  • Factors controlling marine aerosol size distributions and their climate effects over the northwest Atlantic Ocean region 
    Croft, Betty; Martin, Randall V.; Moore, Richard H.; Ziemba, Luke; Crosbie, Ewan; Liu, Hongyu; Russell, Lynn M.; Saliba, Georges; Wisthaler, Armin; Müller, Markus; Schiller, Arne; Galí, Martí; Chang, Rachel Y.-W.; McDuffie, Erin; Bilsback, Kelsey R.; Pierce, Jeffrey R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Aerosols over Earth's remote and spatially extensive ocean surfaces have important influences on planetary climate. However, these aerosols and their effects remain poorly understood, in part due to the remoteness and ...
  • Field observational constraints on the controllers in glyoxal (CHOCHO) reactive uptake to aerosol 
    Kim, Dongwook; Cho, Changmin; Jeong, Seokhan; Lee, Soojin; Nault, Benjamin A.; Campuzano-Jost, Pedro; Day, Douglas A.; Schroder, Jason C.; Jimenez, Jose L.; Volkamer, Rainer; Blake, Donald R.; Wisthaler, Armin; Fried, Alan; Digangi, Joshua P.; Diskin, Glenn S.; Pusede, Sally E.; Hall, Samuel R.; Ullmann, Kirk; Huey, L. Gregory; Tanner, David J.; Dibb, Jack; Knote, Christoph J.; Min, Kyung-Eun (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Glyoxal (CHOCHO), the simplest dicarbonyl in the troposphere, is a potential precursor for secondary organic aerosol (SOA) and brown carbon (BrC) affecting air quality and climate. The airborne measurement of CHOCHO ...
  • Future changes in isoprene-epoxydiol-derived secondary organic aerosol (IEPOX SOA) under the Shared Socioeconomic Pathways: The importance of physicochemical dependency 
    Jo, Duseong S.; Hodzic, Alma; Emmons, Louisa; Tilmes, Simone; Schwantes, Rebecca H.; Mills, Michael J.; Campuzano-Jost, Pedro; Hu, Weiwei; Zaveri, Rahul A.; Easter, Richard C.; Singh, Balwinder; Lu, Zheng; Schulz, Christiane; Schneider, Johannes; Shilling, John E.; Wisthaler, Armin; Jimenez, Jose L. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Abstract. Secondary organic aerosol (SOA) is a dominant contributor of fine particulate matter in the atmosphere, but the complexity of SOA formation chemistry hinders the accurate representation of SOA in models. ...
  • Gas-particle partitioning of toluene oxidation products: An experimental and modeling study 
    Lannuque, Victor; D'Anna, Barbara; Kostenidou, Evangelia; Couvidat, Florian; Martinez-Valiente, Alvaro; Eichler, Philipp; Wisthaler, Armin; Müller, Markus; Temime-Roussel, Brice; Valorso, Richard; Sartelet, Karine (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract. Toluene represents a large fraction of anthropogenic emissions and significantly contributes to tropospheric ozone and secondary organic aerosol (SOA) formation. Despite the fact that toluene is one of the most ...
  • High Concentrations of Atmospheric Isocyanic Acid (HNCO) Produced from Secondary Sources in China 
    Wang, Zelong; Yuan, Bin; Ye, Chenshuo; Roberts, James M.; Wisthaler, Armin; Lin, Yi; Li, Tiange; Wu, Caihong; Peng, Yuwen; Wang, Chaomin; Wang, Sihang; Yang, Suxia; Wang, Baolin; Qi, Jipeng; Wang, Chen; Song, Wei; Hu, Weiwei; Wang, Xinming; Xu, Wanyun; Ma, Nan; Kuang, Ye; Tao, Jiangchuan; Zhang, Zhanyi; Su, Hang; Cheng, Yafang; Wang, Xuemei; Shao, Min (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    Isocyanic acid (HNCO) is a potentially toxic atmospheric pollutant, whose atmospheric concentrations are hypothesized to be linked to adverse health effects. An earlier model study estimated that concentrations of isocyanic ...
  • Higher measured than modeled ozone production at increased NOx levels in the Colorado Front Range 
    Baier, Bianca C; Brune, William H; Miller, David O; Blake, Donald; Long, Russell; Wisthaler, Armin; Cantrell, Christopher; Fried, Alan; Heikes, Brian; Brown, Steven; McDuffie, Erin; Flocke, Frank; Apel, Eric; Kaser, Lisa; Weinheimer, Andrew (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Chemical models must correctly calculate the ozone formation rate, P(O3), to accurately predict ozone levels and to test mitigation strategies. However, air quality models can have large uncertainties in P(O3) calculations, ...
  • In situ measurements of water uptake by black carbon-containing aerosol in wildfire plumes 
    Perring, Anne E.; Schwarz, Joshua P.; Markovic, Milos Z.; Fahey, David W.; Jimenez, José L.; Campuzano-Jost, Pedro; Palm, Brett D.; Wisthaler, Armin; Mikoviny, Tomas; Diskin, Glenn; Sachse, Glen; Ziemba, Luke; Anderson, Bruce; Shingler, Taylor; Crosbie, Ewan; Sorooshian, Armin; Yokelson, Robert; Gao, Ru-Shan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Water uptake by black carbon (BC)-containing aerosol was quantified in North American wildfire plumes of varying age (1 to ~40 h old) sampled during the SEAC4RS mission (2013). A Humidified Dual SP2 (HD-SP2) is used to ...
  • Introducing the extended volatility range proton-Transfer-reaction mass spectrometer (EVR PTR-MS) 
    Piel, Felix; Müller, Markus; Winkler, Klaus; Skytte Af Sätra, Jenny Marie; Wisthaler, Armin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Proton-transfer-reaction mass spectrometry (PTR-MS) is widely used in atmospheric sciences for measuring volatile organic compounds in real time. In the most widely used type of PTR-MS instruments, air is directly introduced ...
  • Measurement report: Aerosol vertical profiles over the western North Atlantic Ocean during the North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) 
    Gallo, Francesca; Sanchez, Kevin J.; Anderson, Bruce E.; Bennett, Ryan; Brown, Matthew D.; Crosbie, Ewan C.; Hostetler, Chris; Jordan, Carolyn; Yang Martin, Melissa; Robinson, Claire E.; Russell, Lynn M.; Shingler, Taylor J.; Shook, Michael A.; Thornhill, Kenneth L.; Wiggins, Elizabeth B.; Winstead, Edward L.; Wisthaler, Armin; Ziemba, Luke D.; Moore, Richard H. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The NASA North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) ship and aircraft field campaign deployed to the western subarctic Atlantic between the years 2015 and 2018. One of the primary goals of NAAMES is to ...
  • Measurement report: Emission factors of NH3 and NHx for wildfires and agricultural fires in the United States 
    Tomsche, Laura; Piel, Felix Maximilian; Mikoviny, Tomas; Nielsen, Claus Jørgen; Guo, Hongyu; Campuzano-Jost, Pedro; Nault, Benjamin A.; Schueneman, Melinda K.; Jimenez, Jose L.; Halliday, Hannah; Diskin, Glenn; Digangi, Joshua P.; Nowak, John B.; Wiggins, Elizabeth B.; Gargulinski, Emily; Soja, Amber J.; Wisthaler, Armin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract. During the 2019 Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) study, the NASA DC-8 carried out in situ chemical measurements in smoke plumes emitted from wildfires and agricultural ...
  • Modeling air quality in the San Joaquin valley of California during the 2013 Discover-AQ field campaign 
    Chen, Jianjun; Yin, Dazhong; Zhao, Zhan; Kaduwela, Ajith; Avise, Jeremy; DaMassa, John; Beyersdorf, Andreas; Burton, Sharon; Ferrare, Richard; Herman, Jay; Kim, Hwajin; Neuman, Andy; Nowak, John; Parworth, Caroline; Scarino, Amy; Wisthaler, Armin; Young, Dominique; Zhang, Qi (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The San Joaquin Valley (SJV) of California has one of the nation's most severe wintertime PM2.5 pollution problems. The DISCOVER-AQ (Deriving Information on Surface Conditions from Column and Vertically Resolved Observations ...
  • Modeling NH4NO3 Over the San Joaquin Valley During the 2013 DISCOVER‐AQ Campaign 
    Kelly, James T.; Parworth, Caroline L.; Zhang, Qi; Miller, David J.; Sun, Kang; Zondlo, Mark A.; Baker, Kirk R.; Wisthaler, Armin; Nowak, John B.; Pusede, Sally E.; Cohen, Ronald C.; Weinheimer, Andrew J.; Beyersdorf, Andreas J.; Tonnesen, Gail S; Bash, Jesse O.; Valin, Luke C.; Crawford, James H.; Fried, Alan; Walega, James G. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    The San Joaquin Valley (SJV) of California experiences high concentrations of particulate matterNH4NO3during episodes of meteorological stagnation in winter. A rich data set of observations related toNH4NO3formation was ...
  • New insights into the column CH2O/NO2 ratio as an indicator of near-surface ozone sensitivity 
    Schroeder, Jason R.; Crawford, James H.; Fried, Alan; Walega, James; Weinheimer, Andrew; Wisthaler, Armin; Muller, Markus; Mikoviny, Tomas; Chen, Gao; Shook, Michael; Blake, Donald R; Tonnesen, Gail S (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Satellite-based measurements of the column CH2O/NO2 ratio have previously been used to estimate near-surface ozone (O3) sensitivity (i.e., NOx or VOC limited), and the forthcoming launch of air quality-focused geostationary ...