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    Academic Journals

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• Harmonized Emissions Component (HEMCO) 3.0 as a versatile emissions component for atmospheric models: application in the GEOS-Chem, NASA GEOS, WRF-GC, CESM2, NOAA GEFS-Aerosol, and NOAA UFS models.

  Authors:Haipeng Lin, Daniel J. Jacob, Elizabeth W. Lundgren, Melissa P. Sulprizio, Christoph A. Keller, Thibaud M. Fritz, et al.From:Geoscientific Model Development (Vol. 14, Issue 9) Peer-Reviewed

  Sept. 6, 2021515 words Article Emissions are a central component of atmospheric chemistry models. The Harmonized Emissions Component (HEMCO) is a software component for computing emissions from a user-selected ensemble of emission inventories and...

• Impact of intercontinental pollution transport on North American ozone air pollution: an HTAP phase 2 multi-model study

  Authors:Min Huang, Gregory R. Carmichael, R. Bradley Pierce, Duseong S. Jo, Rokjin J. Park, Johannes Flemming, et al.From:Atmospheric Chemistry and Physics (Vol. 17, Issue 9) Peer-Reviewed

  May 8, 2017592 words Author abstract, Bri... The recent update on the US National Ambient Air Quality Standards (NAAQS) of the ground-level ozone (O.sub.3) can benefit from a better understanding of its source contributions in different US regions during recent...

• Interpreting space-based trends in carbon monoxide with multiple models

  Authors:Sarah A. Strode, Helen M. Worden, Megan Damon, Anne R. Douglass, Bryan N. Duncan, Louisa K. Emmons, et al.From:Atmospheric Chemistry and Physics (Vol. 16, Issue 11) Peer-Reviewed

  June 10, 2016257 words Brief article We use a series of chemical transport model and chemistry climate model simulations to investigate the observed negative trends in MOPITT CO over several regions of the world, and to examine the consistency of...

• Assessing sub-grid variability within satellite pixels over urban regions using airborne mapping spectrometer measurements.

  Authors:Wenfu Tang, David P. Edwards, Louisa K. Emmons, Helen M. Worden, Laura M. Judd, Lok N. Lamsal, et al.From:Atmospheric Measurement Techniques (Vol. 14, Issue 6) Peer-Reviewed

  June 23, 2021477 words Article Sub-grid variability (SGV) in atmospheric trace gases within satellite pixels is a key issue in satellite design and interpretation and validation of retrieval products. However, characterizing this variability is...

• Future changes in isoprene-epoxydiol-derived secondary organic aerosol (IEPOX SOA) under the Shared Socioeconomic Pathways: the importance of physicochemical dependency.

  Authors:Duseong S. Jo, Alma Hodzic, Louisa K. Emmons, Simone Tilmes, Rebecca H. Schwantes, Michael J. Mills, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 5) Peer-Reviewed

  Mar. 5, 2021516 words Article 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. Volatility-based...

• Ozone variability in the troposphere and the stratosphere from the first 6 years of IASI observations (2008-2013)

  Authors:Catherine Wespes, Daniel Hurtmans, Louisa K. Emmons, Sarah Safieddine, Cathy Clerbaux, and David P. EdwardsFrom:Atmospheric Chemistry and Physics (Vol. 16, Issue 9) Peer-Reviewed

  May 10, 2016309 words Brief article In this paper, we assess how daily ozone (O.sub.3) measurements from the Infrared Atmospheric Sounding Interferometer (IASI) on the MetOp-A platform can contribute to the analyses of the processes driving O.sub.3...

• Representation of the Community Earth System Model (CESM1) CAM4-chem within the Chemistry-Climate Model Initiative (CCMI)

  Authors:Simone Tilmes, Jean-Francois Lamarque, Louisa K. Emmons, Doug E. Kinnison, Dan Marsh, Rolando R. Garcia, et al.From:Geoscientific Model Development (Vol. 9, Issue 5) Peer-Reviewed

  May 20, 2016321 words Brief article The Community Earth System Model (CESM1) CAM4-chem has been used to perform the Chemistry Climate Model Initiative (CCMI) reference and sensitivity simulations. In this model, the Community Atmospheric Model...

• Decoupling peroxyacetyl nitrate from ozone in Chinese outflows observed at Gosan Climate Observatory

  Authors:Jihyun Han, Meehye Lee, Xiaona Shang, Gangwoong Lee, and Louisa K. EmmonsFrom:Atmospheric Chemistry and Physics (Vol. 17, Issue 17) Peer-Reviewed

  Sept. 8, 2017268 words Brief article, Repor... We measured peroxyacetyl nitrate (PAN) and other reactive species such as O.sub.3, NO.sub.2, CO, and SO.sub.2 with aerosols including mass, organic carbon (OC), and elemental carbon (EC) in PM.sub.2. 5 and K.sup.+ in...

• Assessing Measurements of Pollution in the Troposphere (MOPITT) carbon monoxide retrievals over urban versus non-urban regions

  Authors:Wenfu Tang, Helen M. Worden, Merritt N. Deeter, David P. Edwards, Louisa K. Emmons, Sara Martinez-Alonso, et al.From:Atmospheric Measurement Techniques (Vol. 13, Issue 3) Peer-Reviewed

  Mar. 23, 2020527 words Brief article The Measurements of Pollution in the Troposphere (MOPITT) retrievals over urban regions have not been validated systematically, even though MOPITT observations are widely used to study CO over urban regions. Here we...

• A simplified parameterization of isoprene-epoxydiol-derived secondary organic aerosol (IEPOX-SOA) for global chemistry and climate models: a case study with GEOS-Chem v11-02-rc

  Authors:Duseong S. Jo, Alma Hodzic, Louisa K. Emmons, Eloise A. Marais, Zhe Peng, Benjamin A. Nault, et al.From:Geoscientific Model Development (Vol. 12, Issue 7) Peer-Reviewed

  July 15, 2019382 words Author abstract, Bri...

  Secondary organic aerosol derived from isoprene epoxydiols (IEPOX-SOA) is thought to contribute the dominant fraction of total isoprene SOA, but the current volatility-based lumped SOA parameterizations are not...

• Analysis of secondary organic aerosol simulation bias in the Community Earth System Model (CESM2.1).

  Authors:Yaman Liu, Xinyi Dong, Minghuai Wang, Louisa K. Emmons, Yawen Liu, Yuan Liang, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 10) Peer-Reviewed

  May 26, 2021371 words Brief article Organic aerosol (OA) has been considered as one of the most important uncertainties in climate modeling due to the complexity in presenting its chemical production and depletion mechanisms. To better understand the...

• Effective radiative forcing from emissions of reactive gases and aerosols - a multi-model comparison.

  Authors:Gillian D. Thornhill, William J. Collins, Ryan J. Kramer, Dirk Olivié, Ragnhild B. Skeie, Fiona M. O'Connor, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 2) Peer-Reviewed

  Jan. 21, 2021404 words Brief article This paper quantifies the pre-industrial (1850) to present-day (2014) effective radiative forcing (ERF) of anthropogenic emissions of NO.sub.X, volatile organic compounds (VOCs; including CO), SO.sub.2, NH.sub.3, black...

• Tropospheric ozone in CMIP6 simulations.

  Authors:Paul T. Griffiths, Lee T. Murray, Guang Zeng, Youngsub Matthew Shin, N. Luke Abraham, Alexander T. Archibald, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 5) Peer-Reviewed

  Mar. 18, 2021350 words Brief article The evolution of tropospheric ozone from 1850 to 2100 has been studied using data from Phase 6 of the Coupled Model Intercomparison Project (CMIP6). We evaluate long-term changes using coupled atmosphere-ocean...

• Comprehensive isoprene and terpene gas-phase chemistry improves simulated surface ozone in the southeastern US.

  Authors:Rebecca H. Schwantes, Louisa K. Emmons, John J. Orlando, Mary C. Barth, Geoffrey S. Tyndall, Samuel R. Hall, et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 6) Peer-Reviewed

  Mar. 30, 2020423 words Article Ozone is a greenhouse gas and air pollutant that is harmful to human health and plants. During the summer in the southeastern US, many regional and global models are biased high for surface ozone compared to...

• Correcting model biases of CO in East Asia: impact on oxidant distributions during KORUS-AQ.

  Authors:Benjamin Gaubert, Louisa K. Emmons, Kevin Raeder, Simone Tilmes, Kazuyuki Miyazaki, Avelino F. Arellano Jr., et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 23) Peer-Reviewed

  Dec. 1, 2020481 words Article Global coupled chemistry-climate models underestimate carbon monoxide (CO) in the Northern Hemisphere, exhibiting a pervasive negative bias against measurements peaking in late winter and early spring. While this bias...

• Interpreting Space-Based Trends in Carbon Monoxide

  Authors:Sarah A. Strode, Helen M. Worden, Megan Damon, Anne R. Douglass, Bryan N. Duncan, Louisa K. Emmons, et al.From:Atmospheric Chemistry and Physics (Vol. 2016, Issue 2) Peer-Reviewed

  Feb. 2, 2016216 words Brief article We use a series of chemical transport model and chemistry climate model simulations to investigate the observed negative trends in MOPITT CO over several regions of the world, and to examine the consistency of...