Joint Session 60 20th Conference on Atmospheric Chemistry

Program Chairs: Jonathan Jiang , JPL ; Jeffrey L. Collett Jr. , Colorado State Univ. ; Kenneth E. Pickering , NASA/GSFC

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- Indicates paper is an Award Winner

Sunday, 7 January 2018

4:00 PM-5:00 PM: Sunday, 7 January 2018

Monday, 8 January 2018

8:30 AM-8:45 AM: Monday, 8 January 2018


Plenary Session 2
Welcoming Address
Location: Austin, Texas

8:45 AM-9:30 AM: Monday, 8 January 2018

Recording files available
Session 1A
Land Surface Conditions and Atmospheric Composition
Location: Room 9 C (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Chair: Min Huang, George Mason Univ.
8:45 AM
1A.1
9:00 AM
1A.2
Vegetation Phenology Contributes to Seasonal Patterns of Isoprene above a Rain Forest in Central Amazonia
Dandan Wei, The Pennsylvania State Univ., University Park, PA; and J. D. Fuentes, T. Gerken, M. Chamecki, A. M. Trowbridge, P. Stoy, G. G. Katul, G. Fisch, O. C. Acevedo, A. O. Manzi, C. von Randow, and R. M. N. Santos

8:45 AM-9:45 AM: Monday, 8 January 2018

Recording files available
Joint Session 4
Soil Dust I: Lofting, Transport, Characterization, and Interactions with Clouds and Climate
Location: Room 9AB (ACC) (Austin, Texas)
Hosts: (Joint between the 10th Symposium on Aerosol-Cloud-Climate Interactions; and the 20th Conference on Atmospheric Chemistry )
Cochairs: Ottmar Möhler, Karlsruhe Institute of Technology; Naruki Hiranuma, West Texas A&M Univ.
8:45 AM
J4.1
Heterogeneous Ice Nucleation of Dusts: Overview of Results from the INUIT Project (Invited Presentation)
Joachim Curtius, Goethe Univ., Frankfurt, Germany; and S. Augustin-Bauditz, H. Bingemer, C. Budke, H. Clemen, K. Diehl, M. Ebert, S. Eriksen Hammer, F. Frank, J. Fröhlich-Nowoisky, S. Grawe, S. Hartmann, N. Hiranuma, K. Höhler, N. Hoffmann, L. B. Hande, C. Hoose, K. Kandler, A. Kiselev, R. Kohl, T. Koop, A. T. Kunert, T. Leisner, S. Mertes, O. Möhler, M. Niemand, U. Pöschl, B. Pummer, N. Reicher, I. Reichardt, D. Rose, Y. Rudich, T. Schiebel, J. Schneider, J. Schrod, I. Steinke, F. Stratmann, M. Szakall, R. Ullrich, B. Weber, D. Weber, S. Weinbruch, H. Wex, and P. Yordanova
9:15 AM
J4.2
A Comprehensive Dataset on the Immersion Freezing Behavior of Cellulose Particles
Naruki Hiranuma, West Texas A&M Univ., Canyon, TX; and K. Adachi, D. Bell, F. Belosi, H. Beydoun, B. Bhaduri, H. Bingemer, C. Budke, F. Conen, K. Cory, J. Curtius, P. J. DeMott, O. Eppers, S. Grawe, S. Hartmann, N. Hoffmann, K. Höhler, D. Imre, E. Jantsch, K. Kandler, A. Kiselev, T. Koop, G. Kulkarni, A. Mayer, O. Möhler, M. Murakami, B. J. Murray, M. D. Petters, M. Piazza, M. Polen, N. Reicher, S. Robrecht, Y. Rudich, A. Saito, T. Schiebel, G. P. Schill, J. Schneider, M. Scott, L. Segev, E. Stopelli, R. C. Sullivan, K. J. Suski, M. Szakall, T. Tajiri, H. Taylor, H. Tekleab, Y. Tobo, D. Weber, H. Wex, T. F. Whale, C. Whiteside, K. Yamashita, A. Zelenyuk, and S. Zorn
9:30 AM
J4.3
How the Emitted Size Distribution and Mixing State of Feldspar Affect the Ice Nucleating Particle Number Concentration in a Global Model
Jan P. Perlwitz, Climate, Aerosol, and Pollution Research, LLC, Bronx, NY; and A. M. Fridlind, D. A. Knopf, R. L. Miller, and C. Pérez García-Pando

8:45 AM-10:00 AM: Monday, 8 January 2018

Recording files available
Session 1B
Measurement and Modeling of Atmospheric Ammonia—Part I
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: J. X. Warner, Univ. of Maryland; Jeffrey L. Collett Jr., Colorado State Univ.
9:00 AM
1B.2
Modeling Atmospheric Ammonia in Summer Arctic
Wanmin Gong, EC, Downsview, Canada; and S. R. Beagley, C. Whaley, J. Zhang, G. Wentworth, and J. G. Murphy
9:15 AM
1B.3
Quantifying Emissions of NH3 and NOx from Agricultural Sources and Biomass Burning Using SOF
N. Kille, Univ. of Colorado at Boulder, Boulder, CO; and B. Dix and R. Volkamer
9:30 AM
1B.4
A Comparison of Satellite-Retrieved, Modeled, and Measured NH3/CO Ratios in Biomass Burning Plumes
Dale J. Allen, Univ. of Maryland, College Park, MD; and K. E. Pickering, J. X. Warner, L. D. Oman, S. A. Strode, R. R. Dickerson, and Z. Wei
10:00 AM
Evaluation of Ambient Ammonia Measurements using QC-Tildas - Ilana Pollack

9:30 AM-10:00 AM: Monday, 8 January 2018

Recording files available
Session 2
Atmospheric Halogen Chemistry—Part I
Location: Room 9 C (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Chair: Ross Salawitch, Univ. of Maryland
9:30 AM
2.1
Stratospheric Ozone Response to Future Volcanic Eruptions
J. Eric Klobas, Harvard Univ., Cambridge, MA; and D. M. Wilmouth, D. Weisenstein, J. G. Anderson, and R. J. Salawitch
9:45 AM
2.2
Stratospheric Injection of Bromine from VSL Biogenic Sources Inferred from CONTRAST and ATTREX Observations
Pamela Wales, Univ. of Maryland, College Park, MD; and R. J. Salawitch, J. M. Nicely, D. C. Anderson, T. Canty, E. Atlas, S. Schauffler, V. Donets, R. A. Lueb, M. Navarro, D. Chen, L. G. Huey, D. Tanner, R. Volkamer, T. Koenig, S. Baidar, B. Dix, A. Weinheimer, G. M. Wolfe, T. Hanisco, S. Hall, K. Ullmann, A. Saiz-Lopez, R. P. Fernandez, D. Kinnison, J. F. Lamarque, S. Honomichl, and L. L. Pan

10:00 AM-10:30 AM: Monday, 8 January 2018


Coffee Break

10:30 AM-12:00 PM: Monday, 8 January 2018

Recording files available
Session 3A
Atmospheric Halogen Chemistry—Part II
Location: Room 9 C (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Chair: Ross Salawitch, Univ. of Maryland
10:30 AM
3A.1
11:00 AM
3A.2
Modelling the Impact of Reactive Halogens on Tropospheric Ozone
Alfonso Saiz-Lopez, Institute of Physical Chemistry Rocasolano–Consejo Superior de Investigaciones Científicas, Madrid, Spain
11:30 AM
3A.3
The Montreal Protocol and the Pathway from CFCs to Climate-Friendly Compounds and Technologies
Paul A. Newman, NASA GSFC, Greenbelt, MD; and D. W. Fahey, E. L. Fleming, M. M. Hurwitz, F. Li, Q. Liang, S. A. Montzka, J. A. Pyle, B. Safari, and G. Velders

Recording files available
Session 3B
Measurement and Modeling of Atmospheric Ammonia—Part II
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Jeff Collett, Colorado State Univ.; Xiaohong Liu, Univ. of Wyoming
10:30 AM
3B.1
10:45 AM
3B.2
Atmospheric NH3 Dynamics in Relation to PM2.5 Pollution in the North China Plain (Invited Presentation)
Xuejun Liu, China Agricultural Univ., Beijing, Beijing, China; and W. Xu, Y. Zhang, and A. Tang

11:00 AM
3B.3
The Underappreciated Role of Nonvolatile Cations on Aerosol Ammonium–Sulfate Molar Ratios
Rodney Weber, Georgia Institute of Technology, Atlanta, GA; and H. Guo and A. Nenes
11:15 AM
3B.4
Increased Atmospheric Ammonia over the World’s Major Agricultural Areas Detected from Space
J. X. Warner, Univ. of Maryland, College Park, MD; and Z. Wei, R. R. Dickerson, L. L. Strow, Y. Wang, and Q. Liang
11:45 AM
3B.6
Initial Applications of the New Cross-Track Infrared Sounder (CrIS) Satellite Observations of Ammonia
Mark W. Shephard, Environment Canada, Toronto, Canada; and S. K. Kharol, C. McLinden, C. E. Sioris, K. Cady-Pereira, E. Dammers, J. J. Siemons, L. Zhang, C. Whaley, J. Zhang, A. Segers, M. Schaap, J. M. O'Brien, P. A. Makar, and R. Vet
Recording files available
Joint Session 8
Impacts of Aerosol–Cloud Interaction on Radiation
Location: Room 12A (ACC) (Austin, Texas)
Hosts: (Joint between the 10th Symposium on Aerosol-Cloud-Climate Interactions; and the 20th Conference on Atmospheric Chemistry )
Cochairs: Jun Wang, Univ. of Iowa; Zhibo Zhang, Univ. of Maryland
10:30 AM
J8.1
11:15 AM
J8.4
Effects of Biomass Smoke from Southern Africa on Stratocumulus over the Southeastern Atlantic based on Satellite Observations and WRF-Chem Model Simulations (Invited Presentation)
Xiaohong Liu, Univ. of Wyoming, Laramie, WY; and Z. Lu, Z. Zhang, C. Zhao, K. Meyer, C. Wu, C. Rajapakshe, Z. Yang, and J. E. Penner
11:30 AM
J8.5
Modeling the Impact of New Particle Formation on Regional Cloud Radiative Forcing
Ryan C. Sullivan, Cornell Univ., Ithaca, NY; and P. Crippa, H. Matsui, R. Leung, C. Zhao, A. Thota, and S. C. Pryor

Recording files available
Joint Session 9
Soil Dust II: Lofting, Transport, Characterization, and Interactions with Clouds and Climate
Location: Room 9AB (ACC) (Austin, Texas)
Hosts: (Joint between the 10th Symposium on Aerosol-Cloud-Climate Interactions; and the 20th Conference on Atmospheric Chemistry )
Cochairs: Ottmar Möhler, Karlsruhe Institute of Technology; Naruki Hiranuma, West Texas A&M Univ.
10:30 AM
J9.1
Intercomparison of Ice Nucleation Measurements at a Mountaintop Field Observatory (Invited Presentation)
Sarah D. Brooks, Texas A&M Univ., College Station, TX; and S. S. Petters, D. J. Cziczo, P. J. DeMott, M. D. Petters, K. D. Froyd, M. A. Zawadowicz, A. G. Hallar, I. B. McCubbin, and F. Team
11:00 AM
J9.2
Saharan Dust Signature Characterization during AEROSE 2015
Daniel Yeager, Howard Univ., Washington, DC; and V. R. Morris
11:15 AM
J9.3
Frequency and Characteristics of Volcanic Ash and Dust Suspension Events in Iceland
Mary K. Butwin, Univ. of Iceland, Reykjavik, Iceland; and S. von Löwis, M. A. Pfeffer, and Þ. Þorsteinsson
11:30 AM
J9.4
Southwestern New Mexico Thunderstorm Outflow Dust Events in 2017
David DuBois, New Mexico State Univ., Las Cruces, NM; and G. Lundeen and Z. Ghodsi Zadeh
11:45 AM
J9.5
Comparison of Saharan Dust Surface Mass Observations and Lidar in Miami, FL, to the MERRA2 Reanalysis
Samantha Kramer, RSMAS, Miami, FL; and P. Zuidema, R. Delgadillo, A. da Silvia, C. Alvarez, L. Custals, A. Barkley, C. J. Gaston, and J. M. Prospero

12:00 PM-2:00 PM: Monday, 8 January 2018


Lunch Break

2:00 PM-3:00 PM: Monday, 8 January 2018

Recording files available
Lecture 1
2018 Haurwitz Lecture
Location: Salon K (Hilton) (Austin, Texas)
Cochairs: Ángel F. Adames, GFDL; Scott W. Powell, Colorado State Univ.
Recording files available
Joint Session 12
Core Science Keynotes
Location: Room 18CD (ACC) (Austin, Texas)
Hosts: (Joint between the 20th Conference on Atmospheric Chemistry; and the 10th Symposium on Aerosol-Cloud-Climate Interactions )
Cochairs: Jonathan Jiang, JPL; Ottmar Möhler, Karlsruhe Institute of Technology

3:15 PM-4:15 PM: Monday, 8 January 2018

Recording files available
Joint Session 18
Soil Dust III: Lofting, Transport, Characterization, and Interactions with Clouds and Climate
Location: Room 9AB (ACC) (Austin, Texas)
Hosts: (Joint between the 10th Symposium on Aerosol-Cloud-Climate Interactions; and the 20th Conference on Atmospheric Chemistry )
Cochairs: Ottmar Möhler, Karlsruhe Institute of Technology; Naruki Hiranuma, West Texas A&M Univ.
3:15 PM
J18.1
Dust-Infused Baroclinic Storm Clouds: The Evidence, Meteorology, and Some Implications
Michael D. Fromm, NRL, Washington, DC; and P. F. Caffrey and G. P. Kablick III
3:30 PM
J18.2
Impact of Simulated Dust Lofting Methodologies on Sea Breezes along the Arabian Peninsula
Stephen M. Saleeby, Colorado State Univ., Fort Collins, CO; and S. C. van den Heever and J. Bukowski
3:45 PM
J18.3
Disappearing Dust Plumes: Exploring the Roles of Water Vapor and Dust Properties in Detection from Satellite Observations
Sonia Kreidenweis, Colorado State Univ., Fort Collins, CO; and Q. Bian, L. Grasso, X. Xu, J. Bukowski, S. C. van den Heever, J. E. Solbrig, and S. Miller

4:00 PM
J18.4
Retrieving Dust Aerosols over Oceans from MODIS
Yaping Zhou, Morgan State Univ., Greenbelt, MD; and R. Levy, L. Remer, S. Mattoo, and R. Kleidman

4:15 PM-6:00 PM: Monday, 8 January 2018


Formal Poster Viewing with Coffee Break
Location: Exhibit Hall 3 (ACC) (Austin, Texas)

Poster Session 1
20ATMChem Poster Session I
Location: Exhibit Hall 3 (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Chair: Jonathan Jiang, JPL
Cochairs: Jeff Collett, Colorado State Univ.; Kenneth Pickering, Univ. of Maryland
184
Evaluation of Ambient Ammonia Measurements from a Research Aircraft Using a Fast-Response TILDAS Spectrometer with Active Passivation
Ilana Pollack, Colorado State Univ., Fort Collins, CO; and J. Lindaas, J. R. Roscioli, M. Agnese, and E. V. Fischer

Handout (2.6 MB)

185
Stable Isotopic Composition of NH3 at Regional and Urban Scales: Source and Transport Implications
J. David Felix, Texas A&M Univ, Corpus Christi, TX; and A. Berner, E. M. Elliott, and E. A. D. Alvarez

188
The Spatial and Temporal Distribution of Atmospheric Ammonia in Northern Colorado
Katherine B. Benedict, Colorado State Univ., Fort Collins, CO; and E. Bangs, Y. Li, Y. Shao, A. P. Sullivan, and J. L. Collett Jr.

189
Tropospheric and Stratospheric BrO Profiles from Mountaintops in the Remote Marine Atmosphere
Theodore K. Koenig, Univ. of Colorado, Boulder, CO; and B. Dix, F. Hendrick, N. Theys, M. Van Roozendael, J. Brioude, J. P. Cammas, and R. Volkamer

190
Bromine Conundrum over Tropical Oceans: A Missing BrO Sink in the Remote Marine Boundary Layer
R. Volkamer, Univ. of Colorado, Boulder, CO; and T. Koenig, B. Dix, R. Chiu, G. Tyndall, J. J. Orlando, E. C. Apel, S. Y. Wang, M. S. Long, and Y. Miyazaki

191
Aerosol Optical Properties with Polydisperse Size Distribution and Mixture Types during Smog and Asian Dust Events in Seoul, South Korea
Chang Hoon Jung, Kyungin Women's Univ., Incheon, Korea, Republic of (South); and J. Lee, J. Um, and Y. P. Kim

192
LaRC Modeling of Ozone Formation in San Antonio, Texas
Fangzhou Guo, Rice Univ., Houston, TX; and R. Griffin, A. Bui, B. Schulze, H. Wallace, J. H. Flynn III, M. Erickson, S. L. Alvarez, A. Kotsakis, S. Usenko, R. Sheesley, and S. Yoon

193
A Case Study of a Springtime Ozone Episode in the North China Plain
Sarah Benish, Univ. of Maryland, College Park, MD; and P. Stratton, X. Ren, H. He, and R. R. Dickerson

Poster 195 is now paper 7.3A

196
Impact of Convection and Long-Range Transport on Short-Lived Halocarbons in the UT/LS
E. Atlas, Univ. of Miami, Miami, FL; and S. Schauffler, M. Navarro, R. Lueb, R. Hendershot, and R. Ueyama

6:00 PM-8:00 PM: Monday, 8 January 2018


Exhibits Opening and Reception
Location: Exhibit Hall 4 (ACC) (Austin, Texas)

8:00 PM-10:00 PM: Monday, 8 January 2018


Ryan Symposium Reception
Location: The Reverbery at the Hilton (Austin, Texas)

Tuesday, 9 January 2018

8:30 AM-10:00 AM: Tuesday, 9 January 2018

Recording files available
Session 4A
Atmospheric Composition and Modeling—Part I
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Richard S. Eckman, NASA/LARC; Kenneth W. Jucks, NASA Headquarters
8:30 AM
4A.1
Constraining Hydrocarbon Emissions over the Indian Subcontinent Based on HCHO Observations from OMI and GOME-2
Sreelekha Chaliyakunnel, Univ. of Minnesota, St.Paul, MN; and D. B. Millet and K. C. Wells
8:45 AM
4A.2
9:00 AM
4A.3
CO in the Tropical Troposphere: Spatiotemporal Variations and Retrieval Sensitivities from Several Space-Based Sensors
Lucien Froidevaux, JPL, California Institute of Technology, Pasadena, CA; and R. Fuller, J. X. Warner, M. Park, H. M. Worden, and D. E. Kinnison
9:15 AM
4A.4
Evaluation of Surface Ozone Chemistry in Regulatory Air Quality Models through the Use of OMI Observations and Ground-Based Data
Timothy P. Canty, Univ. of Maryland, College Park, MD; and A. M. Ring, M. R. Marvin, S. J. Roberts, L. Hembeck, G. M. Wolfe, R. J. Salawitch, and R. R. Dickerson

9:45 AM
4A.6
Tropospheric NO2 Observations from Airborne Remote Sensors during Discover-AQ: Retrieval and Evaluation
Lok N. Lamsal, USRA, Columbia, MD; and M. Fiollett-Cook, K. E. Pickering, S. Janz, M. Kowalewski, C. P. Loughner, and B. Duncan
Recording files available
Session 4B
The ATom Mission—Part I
Location: Room 9 C (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Michael J. Prather, NASA USRA; Steven Wofsy, Harvard Univ.
9:00 AM
4B.3
The Chemical Context of ATom-1: Insights from Satellite Observations and Modeling
S. A. Strode, NASA USRA, Greenbelt, MD; and J. Liu, L. Lait, R. Commane, B. Daube, S. Wofsy, A. Conaty, P. A. Newman, and M. J. Prather
9:15 AM
4B.4
Influences of Air Masses Sampled by the ATom Mission
Eric A. Ray, CIRES/Univ. of Colorado, Boulder, CO
9:30 AM
4B.5
Ozone and Related Trace Gases over the Atlantic and Pacific Oceans: Comparison of Results from the ATom Mission and Model Studies
Eric J. Hintsa, NOAA, Boulder, CO; and F. L. Moore, G. S. Dutton, B. D. Hall, A. McClure-Begley, J. D. Nance, J. W. Elkins, C. Thompson, J. Peischl, T. B. Ryerson, J. Liu, S. A. Strode, A. M. Fiore, and L. T. Murray
9:45 AM
4B.6
Understanding CO in the Most Remote Atmosphere: Direct Emissions and Secondary Chemistry
Roisin Commane, Harvard Univ., Cambridge, MA; and B. Daube, H. Bian, A. M. Fiore, N. J. Blake, D. R. Blake, R. Hornbrook, J. Liu, E. A. Marais, S. A. Montzka, L. T. Murray, J. M. Nicely, P. Novelli, M. Parrington, E. A. Ray, S. A. Strode, and S. C. Wofsy

10:00 AM-10:30 AM: Tuesday, 9 January 2018


Coffee . Break

10:30 AM-12:00 PM: Tuesday, 9 January 2018

Recording files available
Session 5A
Atmospheric Composition and Modeling—Part II
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Richard S. Eckman, NASA/LARC; Kenneth W. Jucks, NASA Headquarters
10:30 AM
5A.1A
Estimating Convective Entrainment Rates Associated with Deep Convection Using Aura CO and CloudSat Observations
Ryan Stanfield, JPL, Pasadena, CA; and H. Su, J. Jiang, L. Huang, Z. Luo, and A. Molod
10:45 AM
5A.2
A Decade of Changes in Global SO2 Pollution: Insights from Aura/Ozone Monitoring Instrument
Can Li, Univ. of Maryland, College Park, MD; and C. McLinden, V. Fioletov, N. A. Krotkov, S. Carn, J. Joiner, Y. Zhang, D. Streets, H. He, X. Ren, Z. Li, and R. R. Dickerson
11:00 AM
5A.3
More Accurate OMI Tropospheric NO2 Retrievals, Aided by NASA's A-Train High-Resolution Data
Nickolay A. Krotkov, NASA GSFC, Greenbelt, MD; and L. N. Lamsal, A. Vasilkov, S. Marchenko, W. Qin, E. S. Yang, Z. Fasnacht, D. Haffner, W. H. Swartz, R. Spurr, and J. Joiner
11:15 AM
5A.4
Lightning NOx Production per Flash in the Midlatitudes and Tropics Derived from OMI NO2, and WWLLN Observations
K. E. Pickering, Univ. of Maryland, College Park, MD; and E. J. Bucsela, D. J. Allen, R. H. Holzworth, and N. A. Krotkov
11:30 AM
5A.5
A Reevaluation of the Contribution of Very-Short-Lived Bromocarbons to Stratospheric Bromine Loading Based on Satellite BrO
Pamela Wales, Univ. of Maryland, College Park, MD; and R. J. Salawitch, T. P. Canty, R. M. Suleiman, K. Chance, S. Choi, J. Joiner, R. McPeters, P. K. Bhartia, T. Kurosu, G. Mount, E. Spinei, W. R. Simpson, D. Donohoue, B. Johnson, D. E. Kinnison, and S. Tilmes
Recording files available
Session 5B
The ATom Mission—Part II
Location: Room 9 C (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Michael J. Prather, NASA USRA; Steven Wofsy, Harvard Univ.
10:45 AM
5B.2
Spatial and Temporal Representativeness of ATom Transects Using GEOS-5 and GMI–CTM Simulations
Junhua Liu, NASA USRA, Greenbelt, MD; and S. A. Strode, M. J. Prather, L. Lait, A. Conaty, M. R. Damon, S. D. Steenrod, P. A. Newman, R. Commane, B. C. Daube, S. C. Wofsy, T. B. Ryerson, J. Peischl, C. Thompson, H. Bian, and S. E. Strahan
11:15 AM
5B.4
Evaluation of the Reactive Nitrogen Budget of the Remote Atmosphere in Global Models Using Airborne Measurements
Lee Thomas Murray, Univ. of Rochester, Rochester, NY; and S. A. Strode, A. M. Fiore, J. F. Lamarque, M. J. Prather, C. Thompson, J. Peischl, T. B. Ryerson, H. Allen, D. R. Blake, W. Brune, J. Crounse, J. W. Elkins, S. Hall, E. J. Hintsa, L. G. Huey, M. Kim, F. L. Moore, K. Ullmann, P. O. Wennberg, and S. C. Wofsy

11:30 AM
5B.5
Distributions of Nonmethane Hydrocarbons and Oxygenated VOCs and Their Contribution to Chemical Reactivity and HOx Production in the Most Remote Troposphere during the NASA Atmospheric Tomography (ATom) Experiment
Eric C. Apel, NCAR, Boulder, CO; and R. Hornbrook, A. Hills, J. J. Orlando, L. K. Emmons, J. F. Lamarque, E. Asher, T. Hanisco, G. M. Wolfe, J. St. Clair, C. Sweeney, K. McKain, M. Kim, J. Crounse, P. Wennberg, T. B. Ryerson, C. Thompson, J. Peischl, E. A. Ray, N. J. Blake, S. Meinardi, B. Barletta, I. J. Simpson, D. Blake, W. Brune, B. Daube, R. Commane, and S. Wofsy
11:45 AM
5B.6
The Atmospheric Tomography Mission (ATom): Comparing the Chemical Climatology of Reactive Species from Measurements and Global Models
Clare Marie Flynn, Univ. of California, Irvine, Irvine, CA; and M. J. Prather, X. Zhu, P. O. Wennberg, M. Kim, J. Crounse, T. B. Ryerson, C. Thompson, J. Peischl, T. Hanisco, G. Diskin, B. C. Daube, R. Commane, K. McKain, E. C. Apel, N. J. Blake, D. R. Blake, J. Elkins, F. L. Moore, E. J. Hintsa, S. Hall, K. Ullman, S. A. Strode, S. D. Steenrod, S. E. Strahan, J. F. Lamarque, A. M. Fiore, L. W. Horowitz, J. Mao, L. T. Murray, D. T. Shindell, and S. Wofsy

1:30 PM-3:30 PM: Tuesday, 9 January 2018

Recording files available
Session 6A
Atmospheric Composition and Modeling—Part III
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Richard S. Eckman, NASA/LARC; Kenneth W. Jucks, NASA Headquarters
1:30 PM
6A.1
Global Aerosol Type Maps: The Next Generation
Ralph Kahn, NASA GSFC, Greenbelt, MD; and J. A. Limbacher, V. J. B. Flower, M. D. Friberg, and S. H. chen

2:00 PM
6A.2
Transatlantic Dust Transport and Deposition: An Evaluation of the GEOS-5 Model with Satellite and Aircraft Observations
Hongbin Yu, NASA Goddard Space Flight Center, Greenbelt, MD; and M. Chin, Z. Zhang, D. Kim, Q. Tan, T. Yuan, X. Pan, A. da Silva, and C. A. Randles

2:15 PM
6A.3
Are Satellite-Derived Aerosol Types Useful for Evaluating Global Chemistry Transport Models?
Meloë Kacenelenbogen, Bay Area Environmental Research Institute/NASA Ames Research Center, Moffett Field, CA; and J. Redemann, S. P. Burton, M. S. Johnson, O. P. Hasekamp, Q. Tan, K. Dawson, J. W. Hair, R. A. Ferrare, C. F. Butler, B. N. Holben, A. Beyersdof, L. Ziemba, K. D. Froyd, J. E. Dibb, T. Shingler, A. Sorooshian, J. L. Jimenez, P. Campuzano-Jost, D. J. Jacob, K. R. Travis, P. S. Kim, J. P. Schwarz, J. V. Martins, and W. R. Espinosa
2:30 PM
6A.4
2:45 PM
6A.5
Natural and Anthropogenic Aerosols in the UTLS: Sources and the Role of Monsoon Transport
Mian Chin, NASA/GSFC, Greenbelt, MD; and H. Bian, V. Aquila, Q. Tan, T. Kucsera, P. Colarco, J. Burrows, A. E. Bourassa, D. A. Degenstein, J. P. Vernier, and B. G. Martinsson
3:00 PM
6A.6
Reevaluating CFC-11 Emissions: Insights from the 3D GEOS-5 Model Analysis and the Recent NASA Aircraft Missions
Qing Liang, USRA, Greenbelt, MD; and P. A. Newman, D. R. Blake, and I. J. Simpson

3:15 PM
6A.7
The Recent Slowdown in the Decline of CFC-11: New Emissions, Stratospheric Loss Variability, or Both?
Eric A. Ray, CIRES, Boulder, CO; and S. A. Montzka, J. S. Daniel, R. W. Portmann, and P. Yu
Recording files available
Session 6B
The ATom Mission—Part III
Location: Room 9 C (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Michael J. Prather, NASA USRA; Steven Wofsy, Harvard Univ.
1:30 PM
6B.1
Global Distributions of Coarse-Mode Aerosol and Clouds during the Atmospheric Tomography Mission (ATom)
Bernadett Weinzierl, Univ. of Vienna, Vienna, Austria; and M. Dollner, H. Schuh, C. A. Brock, T. P. Bui, G. S. Diskin, K. D. Froyd, J. Gasteiger, J. Katich, A. Kupc, D. Murphy, J. P. Schwarz, A. Spanu, and C. J. Williamson

1:45 PM
6B.2
The Global Distribution of Sea Salt Aerosol
Daniel Murphy, NOAA, Boulder, CO; and K. D. Froyd, C. A. Brock, M. Dollner, A. Kupc, B. Weinzierl, C. J. Williamson, and P. Yu

2:00 PM
6B.3
Global-Scale Measurements of CCN-Sized Particles in the Remote Marine Boundary Layer: Results from the Atmospheric Tomography Mission
Charles A. Brock, NOAA, Boulder, CO; and A. Kupc, C. J. Williamson, K. D. Froyd, D. Murphy, J. L. Jimenez, P. Campuzano-Jost, B. Nault, B. Weinzierl, M. Dollner, F. Erdesz, M. Richardson, N. L. Wagner, and T. V. Bui
2:15 PM
6B.4
Geographical and Vertical Distribution of Organic Aerosol (OA) during ATom-1 and 2: Chemical Removal and Aging as a Function of Photochemical Age
Pedro Campuzano-Jost, Univ. of Colorado, Boulder, CO; and B. A. Nault, J. C. Schroder, D. A. Day, J. L. Jimenez, J. Katich, J. P. Schwarz, R. Commane, B. Daube, S. Wofsy, N. J. Blake, D. R. Blake, C. L. Heald, A. Hodzic, H. Bian, P. R. Colarco, M. Chin, E. A. Ray, S. Pawson, and P. A. Newman

2:30 PM
6B.5
Temporal Variability of Inefficient Combustion Sources in Africa and the Impact on Pollution over the Atlantic Ocean
Eloise A. Marais, Univ. of Birmingham, Birmingham, United Kingdom; and H. Worden, R. Commane, B. Daube, and S. Wofsy
2:45 PM
6B.6
Black Carbon Vertical Distributions in Transported Biomass Burning Plumes
Joshua P. Schwarz, NOAA, Boulder, CO; and J. katich, B. Weinzierl, M. Dollner, C. A. Brock, C. J. Williamson, A. Kupc, B. C. Daube, P. O. Wennberg, and J. Crounse

3:00 PM
6B.7
Current State of the Arctic Atmosphere as Observed by the NASA Atmospheric Tomography (ATom) Mission
Jack E. Dibb, Univ. of New Hampshire, Durham, NH; and E. C. Apel, B. Barletta, D. R. Blake, N. J. Blake, R. Commane, E. J. Hintsa, R. Hornbrook, S. A. Montzka, S. C. Wofsy, and ATom Science Team
3:15 PM
6B.8
Constraining New Particle Formation in Global Models with Global-Scale Measurements of Aerosol Size Distributions
Christina J Williamson, CIRES, Boulder, CO; and A. Kupc, P. Yu, J. Kodros, A. Hodshire, J. R. Pierce, K. Froyd, E. A. Ray, F. Erdesz, M. Richardson, T. V. Bui, and C. A. Brock

3:45 PM-5:30 PM: Tuesday, 9 January 2018


Formal Poster Viewing with Coffee Break
Location: Exhibit Hall 3 (ACC) (Austin, Texas)

6:30 PM-8:30 PM: Tuesday, 9 January 2018


Peter J. Webster Symposium Banquet
Location: Ballroom A (ACC) (Austin, Texas)

Wednesday, 10 January 2018

8:30 AM-10:00 AM: Wednesday, 10 January 2018

Recording files available
Session 7
Regional Air Quality Observations and Modeling—Part I
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Stuart McKeen, NOAA; Kenneth Pickering, Univ. of Maryland
8:30 AM
7.1
Modeling of Meteorology, Chemistry, and Aerosol for the 2017 Utah Winter Fine Particle Study
Stuart A. McKeen, CIRES/Univ. of Colorado and NOAA/Earth System Research Laboratory/Chemical Sciences Division, Boulder, CO; and W. M. Angevine, R. Ahmadov, A. Franchin, A. Middlebrook, D. L. Fibiger, E. McDuffie, C. Womack, S. S. Brown, A. Moravek, J. G. Murphy, and M. Trainer
8:45 AM
7.2
Real-Time Wildfire Smoke Prediction in the United States: The HRRR-Smoke Model
Eric P. James, CIRES/Univ. of Colorado and NOAA/ESRL/GSD, Boulder, CO; and R. Ahmadov and G. A. Grell
9:00 AM
7.3A
Projecting Air Quality Impacts for the Next Eruption of Mauna Loa Volcano, Hawai‘i
Andre Pattantyus, Univ. of Hawai, Honolulu, HI; and L. Holland, S. Businger, and T. Elias
9:15 AM
7.4
The Relationship between Observed and Modeled AOD and Surface PM10 during an Eastern Mediterranean Dust Event
Burcu Kabatas, CIMSS, Madison, WI; and B. Pierce, A. Unal, M. Rogal, A. L. Lenzen, and T. Schaack

9:30 AM
7.5
9:45 AM
7.6
Evaluation of Chemical Lateral Boundary Conditions from the GEOS-5 Global Chemical Transport Model to the Performance of Operational NAQFC
Zhining Tao, USRA, Greenbelt, MD; and Y. Tang, H. Bian, D. Tong, L. Pan, P. Lee, B. Baker, L. D. Oman, and I. Stajner

10:00 AM-10:30 AM: Wednesday, 10 January 2018


Coffee Break

10:30 AM-12:00 PM: Wednesday, 10 January 2018

Recording files available
Session 8
Regional Air Quality Observations and Modeling—Part II
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Stuart McKeen, NOAA; Kenneth Pickering, Univ. of Maryland
10:30 AM
8.1
Observations of Short-Lived Air Pollutants and Greenhouse Gases in the Mid-Atlantic States
R. R. Dickerson, Univ. of Maryland, College Park, MD; and X. Ren, S. Benish, P. Stratton, R. J. Salawitch, H. He, T. P. Canty, D. J. Allen, and P. Miller
10:45 AM
8.2
Impacts of Bay Breezes and Deep Convective Circulations on Surface Ozone at Two Coastal Sites along the Chesapeake Bay
Gina M. Mazzuca, Univ. of Maryland, College Park, MD; and K. E. Pickering, J. Dreessen, R. R. Dickerson, and D. A. New
11:00 AM
8.3
Trends in Hourly Ozone, Daily Ozone, and Ozone Health Metrics across the United States, the European Union, and China
Heather Simon, EPA, Research Triangle Park, NC; and A. Lefohn, C. Malley, B. Wells, A. Reff, X. Xu, L. Zhang, T. Wang, B. Hubbell, and K. Baker
11:15 AM
8.4
New Tools to Identify Wildfire Influence on O3 in Houston
Daniel Jaffe, Univ. of Washington, Bothell, WA; and A. Kaulfus and U. S. Nair
11:30 AM
8.5
Impacts of Biomass Burning on Free-Tropospheric Ozone Photochemistry over the Southern United States
Alexander Kotsakis, Univ. of Houston, Houston, TX; and Y. Choi, A. H. Souri, W. Jeon, and J. H. Flynn III
11:45 AM
8.6
Gaseous Methylamines over the Yangtze River Delta in China: Contributions from Different Source Types and Comparisons of WRF-Chem Simulations with Observations
Jingbo Mao, Fudan Univ., Shanghai, China; and F. Yu, Y. Zhang, J. An, L. Wang, L. Yao, G. Luo, W. Ma, Q. Yu, C. Huang, L. Li, and L. Chen

12:00 PM-1:30 PM: Wednesday, 10 January 2018


Lunch Break

1:30 PM-2:30 PM: Wednesday, 10 January 2018

Recording files available
Lecture 2
2018 Horton Lecture
Location: Room 18A (ACC) (Austin, Texas)
1:30 PM
L2.1
Rain Rates from Space: Past & Future (Invited Presentation)
Gerald R. North, Texas A&M Univ., College Station, TX

1:30 PM-3:15 PM: Wednesday, 10 January 2018

Recording files available
Joint Session 43
Joint Session with the Committee on Atmospheric Chemistry. Part I: Use of Satellite Observations for Air Quality Applications
Location: Salon G (Hilton) (Austin, Texas)
Hosts: (Joint between the 20th Joint Conference on the Applications of Air Pollution Meteorology with the A&WMA; and the 20th Conference on Atmospheric Chemistry )
Cochairs: Aaron Pina, Aeris LLC; Hesham EL-Askary, Center for Earth Observing and Space Research (CEOSR); Olga Kalashnikova, JPL
1:45 PM
J43.2
Satellite Observed Interannual Variations of Intercontinental Transport of Dust and Combustion Aerosol
Hongbin Yu, NASA Goddard Space Flight Center, Greenbelt, MD; and Q. Tan, M. Chin, H. Bian, L. Remer, and R. Levy

2:00 PM
J43.3
2:45 PM
J43.6
Constraining Chemical Transport Model Simulations of PM2.5 Using Surface Aerosol Airmass Type Maps
Mariel D. Friberg, Georgia Institute of Technology, Atlanta, GA; and R. Kahn, J. A. Limbacher, K. W. Appel, and J. A. Mulholland

3:00 PM
J43.7
Identifying Biomass Burning Impacts on Air Quality in Southeast Texas Using Satellites, Models, and Surface Data
David Westenbarger, Texas Commission on Environmental Quality (TCEQ), Austin, TX; and G. A. Morris

1:30 PM-3:30 PM: Wednesday, 10 January 2018

Recording files available
Session 9
Atmospheric Composition and Modeling—Part IV
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Richard S. Eckman, NASA/LARC; Kenneth W. Jucks, NASA Headquarters
1:30 PM
9.1A
Toward Isoprene Measurements from CrIS: A First Look over Two Isoprene Hot Spots
Kelley C. Wells, Univ. of Minnesota, St. Paul, MN; and D. B. Millet, D. Fu, and V. Payne
1:45 PM
9.2
Comparing POSIDON and ATTREX Observations of Water Vapor to MLS Measurements
Mark R. Schoeberl, Science and Technology Corporation, Columbia, MD; and E. Jensen, T. Thornberry, and L. Pfister
2:00 PM
9.3
Observational Evidence of Horizontal Transport-Driven Dehydration in the TTL
Laura L. Pan, NCAR, Boulder, CO; and S. Honomichl, R. S. Gao, T. Thornberry, A. W. Rollins, E. J. Hintsa, G. Diskin, T. P. Bui, L. Pfister, and E. Jensen

2:15 PM
9.4
How Important Is Convection for Controlling Stratospheric Humidity and Upper-Tropospheric Clouds?
Rei Ueyama, NASA, Moffett Field, CA; and M. R. Schoeberl, E. Jensen, L. Pfister, and M. A. Avery
2:30 PM
9.5
2:45 PM
9.6
Effect of Lofted Ice Sublimation from Tropical Deep Convection on TTL Water Vapor
Andrew E. Dessler, Texas A&M Univ., College Station, TX; and H. Ye

3:15 PM-3:45 PM: Wednesday, 10 January 2018


Joint Session 47
Joint Session with the Committee on Atmospheric Chemistry. Part II: Topics Involving Atmospheric Bioaerosols
Location: Salon G (Hilton) (Austin, Texas)
Hosts: (Joint between the 20th Joint Conference on the Applications of Air Pollution Meteorology with the A&WMA; and the 20th Conference on Atmospheric Chemistry )
Chair: Erik Kabela, Oak Ridge National Laboratory
3:15 PM
J47.1

3:45 PM-5:30 PM: Wednesday, 10 January 2018


Formal Poster Viewing with Coffee Break
Location: Exhibit Hall 3 (ACC) (Austin, Texas)

Poster Session 2
20ATMChem Poster Session II
Location: Exhibit Hall 3 (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Chair: Jonathan Jiang, JPL
Cochairs: Kenneth Pickering, Univ. of Maryland; Jeff Collett, Colorado State Univ.
1098
Evaluating Commercial Marine Emissions and their Role in Air Quality Policy using Observations and the CMAQ Model
Allison M. Ring, Univ. of Maryland, College Park, MD; and T. P. Canty, D. Anderson, T. Vinciguerra, H. He, D. L. Goldberg, S. Ehrman, R. R. Dickerson, and R. J. Salawitch

1099
Mechanism of SOA Formation Determines the Magnitude of Radiative Effects
Jialei Zhu, Univ. of Michigan, Ann Arbor, MI; and J. E. Penner, G. Lin, and C. Zhou

1100
Constraining Aging Processes of Black Carbon in a Climate Model
Yuan Wang, California Institute of Technology, Pasadena, CA; and P. L. Ma, J. Peng, R. Zhang, J. Jiang, R. Easter, and Y. Yung

1102
Ensemble Simulation of Anthropogenic and Biomass Burning CO2 and CO in CAM-Chem
Wenfu Tang, Univ. of Arizona, Tucson, AZ; and A. F. Arellano Jr., L. K. Emmons, and B. Gaubert

1103
Model Simulation of the Convectively Lofted Ice Contribution to Stratospheric Water Vapor
Wandi Yu, Texas A&M Univ., College Station, TX; and A. E. Dessler

1104
Influence of Lightning NOx on Near-Surface Air Quality
Jianfeng Li, Georgia Institute of Technology, Atlanta, GA; and Y. Wang, C. smeltzer, and W. J. Koshak

1108
The Potential Impact of Using OMI Data for Aerosol Analysis over the Arctic Region
Jianglong Zhang, Univ. of North Dakota, Grand Forks, ND; and J. W. Marquis, J. R. Campbell, E. J. Hyer, M. I. Oyola, T. D. Toth, and P. Xian

Poster 1109 has moved. New Paper number is 9.1A

1110
Variability in Lightning NOx Production Rates due to Regional Differences in Lightning Type and Polarity
Jeff Lapierre, Earth Networks, Germantown, MD; and J. L. Laughner, S. Pusede, and W. J. Koshak

1111
Application of Aura OMI L2G Products Compared with NASA MERRA-2 Assimilation
Jian Zeng, Adnet Systems and NASA Goddard Space Flight Center, Greenbelt, MD; and S. Shen, J. E. Johnson, J. Wei, and D. Meyer

1112
Global Distributions of Tropopause-Layer Laminar Cirrus Clouds Revealed by CALIPSO
Victoria Tsai, Stanford Univ., Stanford, CA; and J. Gong, T. Wang, and D. L. Wu

1113
Increased Propane Emissions from the United States over the Last Decade
Lei Hu, CIRES, Boulder, CO; and S. A. Montzka, A. Andrews, D. Helmig, B. Miller, K. Thoning, T. Nehrkorn, M. Mountain, C. Sweeney, E. Dlugokencky, L. Bruhwiler, J. Miller, S. Lehman, J. W. Elkins, and P. Tans

1114
Ozone Variability and Anomalies Observed during the SENEX and SEAC4RS Campaigns
Shi Kuang, Univ. of Alabama, Huntsville, AL; and M. J. Newchurch, A. M. Thompson, R. M. Stauffer, B. Johnson, and L. Wang

1116
Balloonsonde SO2 and O3 Profiles from TICOSONDE in Costa Rica for the Validation of OMI and Sentinel-5 Precursor Retrievals
Gary A. Morris, St. Edward's Univ., Austin, TX; and H. B. Selkirk, H. Vömel, J. A. Diaz, N. A. Krotkov, C. Li, and J. Joiner

1117
1118
Investigation of Laminar Cirrus and Its Roles in the TTL Water Budget
Tao Wang, NASA/GSFC, Greenbelt, MD; and J. Gong, V. Tsai, and D. L. Wu

1119
Potential Constraints on “Background” Oxidation in Chemistry–Climate Models Using AToM-1 and -2 Observations of Formaldehyde Variability
Colleen Baublitz, Columbia Univ., New York, NY; and A. M. Fiore, L. Valin, L. T. Murray, W. Brune, G. Diskin, T. Hanisco, R. Hornbrook, E. C. Apel, J. F. Lamarque, D. O. Miller, J. Peischl, T. B. Ryerson, A. Thames, C. Thompson, D. Westervelt, G. M. Wolfe, and M. J. Prather

1120
High-Latitude Observations of NMHCs, Halocarbons, and COs during ATom-1 and ATom-2
Nicola J. Blake, Univ. of California, Irvine, CA; and D. R. Blake, S. Meinardi, B. Barletta, I. J. Simpson, S. Hughes, N. Vizenor, C. Woods, L. K. Emmons, E. C. Apel, R. Hornbrook, A. Hills, S. A. Montzka, F. L. Moore, B. Miller, E. A. Ray, J. E. Campbell, R. Commane, and S. C. Wofsy

1121
Alkyl Nitrate Measurements Using Whole Air Sampling (WAS) during ATom-1 and ATom-2
Barbara Barletta, Univ. of California, Irvine, CA; and D. R. Blake, S. Meinardi, N. J. Blake, I. J. Simpson, S. Hughes, N. Vizenor, C. Woods, T. B. Ryerson, C. Thompson, J. Peischl, L. K. Emmons, E. C. Apel, and R. Hornbrook

1122
Improving Emission Inventories in CESM2.0 Using TOGA Observations from the ATom Campaign
Elizabeth Asher, NCAR, Boulder, CO; and R. Hornbrook, A. Hills, L. K. Emmons, S. Arnold, B. B. Stephens, D. Murphy, P. Campuzano-Jost, K. Froyd, and E. C. Apel

1123
Global Survey of Submicron Aerosol Acidity (pH)
Benjamin A. Nault, Univ. of Colorado, Boulder, CO; and P. Campuzano-Jost, D. A. Day, W. Hu, B. B. Palm, J. C. Schroder, H. Bian, M. Chin, S. L. Clegg, P. R. Colarco, J. Crounse, J. E. Dibb, M. J. Kim, J. Kodros, E. A. Marais, J. R. Pierce, E. Scheuer, P. O. Wennberg, and J. L. Jimenez

1124
Investigate Atmospheric Aerosol over Oceans Using ATom Measurements and the GEOS-5 Model
Huisheng Bian, NASA/GSFC Univ. Maryland, Baltimore County/JCET, Greenbelt, MD; and M. Chin, P. Colarco, A. S. Darmenov, A. M. Dasilva, P. Campuzano-Jost, J. Elkins, K. D. Froyd, E. J. Hintsa, J. L. Jimenez, F. L. Moore, C. Sweeney, and S. Wofsy

1125
Measured OH Reactivity in ATom
Alexander Thames, Pennsylvania State Univ., University Park, PA; and W. Brune and D. O. Miller

1126
ATom Observations of New Particle Formation in the Tropical Upper Troposphere: The Role of Convection and Nucleation Mechanisms
Agnieszka Kupc, CIRES/NOAA, Boulder, CO; and C. J. Williamson, A. Hodshire, J. R. Pierce, E. A. Ray, K. D. Froyd, M. Richardson, B. Weinzierl, M. Dollner, F. Erdesz, T. P. Bui, G. Diskin, and C. A. Brock

1127
Bridging the Gap between Large-Scale Drivers of CH4 Lifetime Model Differences and Instantaneous, Localized Measurements of OH and Related Species
Julie M. Nicely, NASA GSFC, Greenbelt, MD; and E. C. Apel, W. Brune, R. Commane, B. Daube, M. Deushi, G. S. Diskin, B. Duncan, S. Hall, T. Hanisco, R. Hornbrook, P. Joeckel, B. Josse, D. E. Kinnison, M. Manyin, K. McKain, D. O. Miller, O. Morgenstern, L. T. Murray, L. Oman, J. Peischl, A. Pozzer, L. E. Revell, E. Rozanov, T. B. Ryerson, R. J. Salawitch, A. Stenke, A. Thames, C. Thompson, S. Tilmes, H. Tost, K. Ullman, D. Westervelt, and G. Zeng

1128
Constraining Ozone Deposition to the Sea Surface Using Airborne Data
Jeff Peischl, CIRES/Univ. of Colorado, Boulder, CO; and G. M. Wolfe, C. Thompson, T. V. Bui, G. S. Diskin, R. Commane, B. Daube, S. C. Wofsy, and T. B. Ryerson

1129
Measurements of Brown Carbon during ATom-2
Linghan Zeng, Georgia Institute of Technology, Atlanta, GA; and R. Weber, A. Zhang, Y. Wang, E. Scheuer, and J. E. Dibb

1130
A Comparison of the Seasonal and Long-Term Climatology of TICOSONDE Water Vapor and Ozone Profiles for the Period 2005–17 with MLS Version 4 at Costa Rica (10°N, 84°W)
Henry B Selkirk, GSFC, Greenbelt, MD; and H. Vömel, M. R. Schoeberl, G. Taha, G. A. Morris, S. M. Davis, A. M. Thompson, and J. C. Witte

1131
Observations of N2O5 in the Remote Atmosphere during ATom-2
Marilyn B. Jones, Georgia Tech, Atlanta, GA; and L. G. Huey, D. Tanner, Y. Ji, G. Eris, M. Takeuchi, N. L. Ng, C. Thompson, J. Peischl, J. E. Dibb, J. Crounse, P. Wennberg, G. Diskin, and L. T. Murray

1132
Online Inclusion of Chemical Suites with Different Levels of Complexity in Two Global Modeling Systems and Comparison to Observations
Li Zhang, NOAA/ESRL–CIRES, Boulder, CO; and G. A. Grell, S. A. McKeen, and R. Ahmadov

1133
From Global to Cloud-Resolving Scale: Experiments with a Scale-Aware Physics Package and Impact on the Transport of Chemical Species
Georg A. Grell, NOAA, Boulder, CO; and S. R. Freitas, J. B. Olson, M. M. Bela, and T. G. Smirnova

1134
1135
Extratropical Stratospheric Tracer Transport: Effects of High-Impact Orographic Gravity Wave Events
Laura Holt, NorthWest Research Associates, Boulder, CO; and M. J. Alexander and D. A. Ortland

1136
In Situ Measurements of Sulfur Hexafluoride (SF6) and Age of Air from NH Sources during the Atmospheric Tomography (ATom) Global Airborne Survey
James W. Elkins, NOAA, Boulder, CO; and F. L. Moore, E. J. Hintsa, E. A. Ray, G. S. Dutton, J. D. Nance, B. D. Hall, C. Sweeney, S. A. Montzka, E. Dlugokencky, and P. A. Newman

1138
Laboratory Evaluation and Analysis of Low-Cost NDIR CO2 Measuring Platforms for Determining Ambient CO2 Concentrations
Shaun T. Howe, Univ. of Maryland, College Park, MD; and N. Zeng, C. R. Martin, A. Karion, J. R. Whetstone, and R. R. Dickerson

1139
Investigating Regional Carbon Flux Estimates from the GEOS-Carb system using GOSAT-ACOS and OCO-2 Total-Column CO2 Observations
Abhishek Chatterjee, USRA, Greenbelt, MD; and B. Weir, L. Ott, J. Kouatchou, S. R. Kawa, and S. Pawson

1140
Constructing a Spatially Resolved Methane Emission Inventory of Natural Gas Production and Distribution over the Contiguous United States
Xiang Li, Carnegie Mellon Univ., Pittsburgh, PA; and M. Omara, P. J. Adams, and A. Presto

1141
Separating Methane Emissions from Agricultural Sources and Natural Gas: Direct Measurements of Excess Columns of CH4, C2H6, and NH3 in the Colorado Front Range
N. Kille, Univ. of Colorado at Boulder, Boulder, CO; and R. Chiu, M. Frey, F. Hase, M. K. Sha, T. Blumenstock, J. W. Hannigan, and R. Volkamer

1142
Comparison of CO2 Measurements with CO2 Distributions from New Forward Model Simulations
Yuping Liu, NASA, Greenbelt, MD; and S. R. Kawa and G. J. Collatz

1143
GES DISC Long-Term Data Analysis Services Using AIRS and CMS Methane Data as an Example
Jennifer Wei, GES DISC, Greenbelt, MD; and E. Sherman and D. Meyer

1144
The Impact of Coupling CO2 with a Convective Scheme on the Simulated CO2
Tyler Leicht, Cornell Univ., Ithaca, NY; and S. Feng and T. Lauvaux

1145
20 Years of Tracer Transport Studies: Challenges and Implications for Flux Inversions
Brad Weir, NASA/GSFC/USRA, Greenbelt, MD; and S. Basu, A. Jacobson, A. Schuh, L. Ott, and S. Pawson

1146
Influence of Large-Scale Circulation on Carbon Dioxide
Jason La, Univ. of Houston, Houston, TX; and X. Jiang, L. Li, and Y. Yung

1147
Progress toward Estimating Surface Carbon Dioxide Fluxes at the Regional Scale Using an Augmented Ensemble Kalman Filter
Hans W. Chen, Pennsylvania State Univ., Univ. Park, PA; and F. Zhang, T. Lauvaux, and K. J. Davis

Poster 1148 has moved. New Paper number is 5A.1A

7:00 PM-9:00 PM: Wednesday, 10 January 2018


98th AMS Awards Banquet
Location: Ballroom D (ACC) (Austin, Texas)

Thursday, 11 January 2018

8:30 AM-9:30 AM: Thursday, 11 January 2018

Recording files available
Session 10
The ATom Mission—Part IV
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Michael J. Prather, NASA USRA; Steven Wofsy, Harvard Univ.
8:30 AM
10.1
The Behavior of Global Atmospheric Hydroxyl (OH) and Hydroperoxyl (HO2)
William Brune, Pennsylvania State Univ., University Park, PA; and D. O. Miller and A. Thames
8:45 AM
10.2
Observational Constraints on a Potential Source of Secondary Methanol
Michelle Kim, California Institute of Technology, Pasadena, CA; and J. Crounse, A. P. Teng, E. Asher, A. Hills, R. Hornbrook, E. C. Apel, A. L. Brosius, D. O. Miller, A. Thames, W. Brune, K. Ullman, S. Hall, J. St. Clair, G. M. Wolfe, T. Hanisco, C. Sweeney, K. McKain, J. Peischl, C. Thompson, T. B. Ryerson, R. Commane, B. C. Daube, S. Wofsy, and P. Wennberg

9:00 AM
10.3
Formaldehyde Variability in the Remote Troposphere
G. M. Wolfe, NASA GSFC, Greenbelt, MD; and J. Liao, J. St. Clair, T. Hanisco, W. Brune, D. O. Miller, A. Thames, C. Thompson, T. B. Ryerson, and J. Peischl
9:15 AM
10.4
Tracking Oxidation during Transport of Trace Gases in Air from the Northern to the Southern Hemisphere
Stephen A Montzka, NOAA/ESRL/GMD, Boulder, CO; and F. Moore, E. Atlas, D. D. Parrish, B. Miller, C. Sweeney, K. McKain, B. D. Hall, C. Siso, M. Crotwell, E. J. Hintsa, J. W. Elkins, D. R. Blake, B. Barletta, S. Meinardi, T. Claxton, and R. Hossaini

Recording files available
Joint Session 49
Joint Session with the Committee on Atmospheric Chemistry. Part III: Quantification of Long-Range Transport of Air Pollutants
Location: 412 (Hilton) (Austin, Texas)
Hosts: (Joint between the 20th Joint Conference on the Applications of Air Pollution Meteorology with the A&WMA; and the 20th Conference on Atmospheric Chemistry )
Cochairs: Stefano Alessandrini, NCAR; Terry Keating, Office or Air and Radiation, U.S. Environmental Protection Agency
8:30 AM
J49.1
HTAP2/AeroCom III Modeling and Analysis on Hemispheric Transport of Aerosol
Mian Chin, NASA/GSFC, Greenbelt, MD; and H. Bian, L. Emmons, J. Flemming, D. Henze, J. E. Jonson, T. Kucsera, M. Lund, B. H. Samset, M. Schulz, K. Sudo, T. Takemura, and S. Tilmes
8:45 AM
J49.2
9:15 AM
J49.4
Regional Variation in the Time of Emergence of Air Quality Climate Penalties Under Climate Change Mitigation Scenarios
Daniel Rothenberg, MIT, Cambridge, MA; and F. Garcia-Menendez, E. Monier, S. Solomon, and N. Selin

9:30 AM-10:30 AM: Thursday, 11 January 2018


Exhibit Hall Breakfast
Location: Exhibit Hall 4 (ACC) (Austin, Texas)

10:30 AM-12:00 PM: Thursday, 11 January 2018

Recording files available
Session 11
Greenhouse Gases—Part I
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Abhishek Chatterjee, USRA; Sean Crowell, Univ. of Oklahoma; Scott Denning, Colorado State Univ.
10:30 AM
11.1
10:45 AM
11.2
An Overview of the Arctic Boreal Vulnerability Experiment (ABoVE) and Its Relevance to Characterizing Land–Atmosphere Exchanges and Climate Feedbacks
Scott J Goetz, Northern Arizona Univ., Flagstaff, AZ; and E. Kasischke, C. E. Miller, P. Griffith, and H. A. Margolis

11:15 AM
11.3
Pulsed Lidar Measurements of CO2 Column Concentrations in the 2017 ASCENDS Airborne Campaign and Comparison with In Situ Measurements
James B. Abshire, GSFC, Greenbelt, MD; and H. Riris, G. R. Allan, J. Mao, W. E. Hasselbrack, K. Numata, J. R. Chen, S. R. Kawa, J. Digangi, and Y. Choi
11:30 AM
11.4
Constraints on Southern Ocean CO2 Fluxes and Seasonality from Atmospheric Vertical Gradients Observed on Multiple Airborne Campaigns
Kathryn McKain, NOAA, Boulder, CO; and C. Sweeney, B. B. Stephens, M. C. Long, A. Jacobson, S. Basu, A. Chatterjee, B. Weir, S. Wofsy, E. Atlas, D. R. Blake, S. A. Montzka, and R. Stern

11:45 AM
11.5A
Benchmarking Chemistry–Climate Model Top-of-Atmosphere Flux in the 9.6-µm Infrared Ozone Absorption Band with Comparisons to Satellite Observations
Helen Worden, NCAR, Boulder, CO; and L. Kuai, K. Bowman, A. Conley, J. F. Lamarque, D. T. Shindell, G. Faluvegi, C. Clerbaux, P. F. Coheur, S. Doniki, S. Kulawik, F. Paulot, D. Paynter, L. Oman, S. A. Strode, E. Rozanov, A. Stenke, and L. E. Revell
Recording files available
Joint Session 51
Joint Session with the Committee on Atmospheric Chemistry. Part IV: Topics of Atmospheric Chemistry and Air Pollution Meteorology
Location: 412 (Hilton) (Austin, Texas)
Hosts: (Joint between the 20th Joint Conference on the Applications of Air Pollution Meteorology with the A&WMA; and the 20th Conference on Atmospheric Chemistry )
Chair: Jon Pleim, NOAA
10:30 AM
J51.1
10:45 AM
J51.2
Photochemical Modeling of Industrial Flare Plumes Using SCICHEM
Ron Thomas, Texas Commission on Environmental Quality, Austin, TX; and P. Karamchandani, L. Parker, G. Yarwood, and M. Jones
11:00 AM
J51.3
Pollution Characteristics and Control Strategies of Atmospheric Photochemistry at a Comprehensive Site in Guangzhou, China
Yu Zou, Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration (CMA), Guangzhou, China
11:30 AM
J51.5
Reduction in Potency of Floral Scents as a Result of Increasing Pollutant Concentrations
J. D. Fuentes, Pennsylvania State Univ., Univ. Park, PA; and J. J. Orlando, G. Tyndall, G. G. Katul, E. Bou-Zeid, and T. Roulston
11:45 AM
J51.6
SCICHEM, CMAQ, and CAMx Single-Source Secondary Pollutants: A Model Intercomparison
Bart Brashers, Ramboll Environ, Lynnwood, WA; and P. Karamchandani, E. Knipping, J. Jung, T. Shah, B. Chowdhury, A. Alvarez-Gomez, G. Yarwood, R. Morris, and N. Kumar

12:00 PM-1:30 PM: Thursday, 11 January 2018


David J. Raymond Symposium Luncheon
Location: Ballroom A (ACC) (Austin, Texas)

Lunch Break

1:30 PM-2:30 PM: Thursday, 11 January 2018

1:30 PM-3:00 PM: Thursday, 11 January 2018

Recording files available
Session 12
Greenhouse Gases—Part II
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Abhishek Chatterjee, USRA; Sean Crowell, Univ. of Oklahoma; Scott Denning, Colorado State Univ.
1:30 PM
12.1
Progress toward Improving Regional Atmospheric Inversions Using Airborne Measurements: Results from ACT-America
Kenneth J. Davis, Pennsylvania State Univ., Univ. Park, PA; and D. Baker, Z. Barkley, E. Bell, K. Bowman, E. Browell, J. Campbell, H. Chen, Y. Choi, J. Digangi, J. Dobler, W. Erxleben, T. F. Fan, S. Feng, A. Fried, B. Gaudet, A. Jacobson, K. Keller, S. Kooi, T. Lavaux, B. Lin, M. McGill, D. McGregor, A. Michalak, C. O'Dell, S. Pal, N. Parazoo, R. Pauly, N. Randazzo, A. Samaddar, A. Schuh, C. Williams, F. Zhang, and Y. Zhou
2:00 PM
12.2
Evaluation of WRF-VPRM CO2 Dynamical Downscaling over the Contiguous United States Using the ACT-America Data
Xiao-Ming Hu, Univ. of Oklahoma, Norman, OK; and Y. Zhang, S. Crowell, M. Xue, B. Moore III, X. Xiao, J. Digangi, and K. J. Davis
2:15 PM
12.3
Evaluation of WRF-Chem-Simulated Carbon Dioxide Concentrations in the Baltimore–Washington Metropolitan Area
Cory R. Martin, Univ. of Maryland, College Park, MD; and N. Zeng, A. Karion, I. Lopez-Coto, Y. Liu, K. Gurney, T. Oda, R. R. Dickerson, and J. R. Whetstone
2:30 PM
12.4
City-Scale Traffic Emissions from Long-Path Measurements
Eleanor Waxman, National Institute of Standards and Technology, Boulder, CO; and K. Cossel, G. W. Truong, F. Giorgetta, W. Swann, I. Coddington, and N. Newbury
2:45 PM
12.5
Measurement and Modeling of CH4 and CO2 Fluxes from Local Sources Using Portable Total-Column Spectrometers
Taylor Jones, Harvard Univ., Cambridge, MA; and J. E. Franklin, N. Jacobs, W. R. Simpson, M. Dubey, and S. C. Wofsy
Recording files available
Joint Session 55
Joint Session with Committee on Atmospheric Chemistry. Part V: Air Quality Impacts on Society and the Environment Involving Ozone
Location: 412 (Hilton) (Austin, Texas)
Hosts: (Joint between the 20th Joint Conference on the Applications of Air Pollution Meteorology with the A&WMA; and the 20th Conference on Atmospheric Chemistry )
Chair: Erik Kabela, Oak Ridge National Laboratory
1:30 PM
J55.1
Progress on Understanding U.S. Background Ozone
Daniel Jaffe, Univ. of Washington, Bothell, WA; and O. R. Cooper, A. M. Fiore, B. H. Henderson, D. Henze, A. O. Langford, M. Lin, T. Moore, G. Tonnesen, and A. G. Russell
1:45 PM
J55.2
An Overview of the Fires, Asian, and Stratospheric Transport-Las Vegas Ozone Study (FAST-LVOS)
Andrew O. Langford, NOAA/Earth System Research Laboratory/Chemical Sciences Division, Boulder, CO; and R. J. Alvarez II, T. A. Bonin, W. A. Brewer, G. Kirgis, S. P. Sandberg, C. J. Senff, A. M. Weickmann, S. S. Brown, Z. Decker, W. P. Dubé, D. L. Fibiger, J. Peischl, T. B. Ryerson, D. J. Caputi, S. A. Conley, P. Cullis, I. Petropavlovskikh, and C. W. Sterling
2:00 PM
J55.3
2:15 PM
J55.4
Impacts of Emission Variability on CTM Pollutant Representation
Gaige Hunter Kerr, The Johns Hopkins Univ., Baltimore, MD; and D. W. Waugh
2:30 PM
J55.5
A Case Study of Ozone Diurnal Variation in the Planetary Boundary Layer in Southeast United States using Multiple Observations and Large-Eddy Simulation
Guanyu Huang, Spelman College, Atlanta, GA; and M. J. Newchurch, S. Kuang, K. R. Knupp, H. G. Ouwersloot, and L. Wang
2:45 PM
J55.6
Analog–Kalman Filter−Based Post-Processing of Surface Ozone from the CMAQ Model
Irina V. Djalalova, CIRES, Boulder, CO; and J. Wilczak, D. Allured, L. Delle Monache, S. Alessandrini, J. Huang, J. McQueen, and I. Stajner
Recording files available
Joint Session 56
Natural Aerosols in the Atmosphere: Emissions through Impacts -Part I
Location: Room 12A (ACC) (Austin, Texas)
Hosts: (Joint between the 10th Symposium on Aerosol-Cloud-Climate Interactions; and the 20th Conference on Atmospheric Chemistry )
Cochairs: Thomas E. Gill, Univ. of Texas; Vernon Morris, Howard University; Heather Holmes, Univ. of Texas
1:45 PM
J56.2
An Improved Methodology to Calculate the Aerosol Extinction Coefficients for the El Paso-Juarez Airshed
Rosa M. Fitzgerald, Univ. of Texas, El Paso, TX; and J. Polanco, R. McaFee, and W. R. Stockwell

2:00 PM
J56.3
Characterizing Aerosol Optical Properties Using the Aerosol Robotic Network (AERONET) Version 3 Aerosol Optical Depth and Inversion Products
David M. Giles, SSAI, Lanham-Seabrook, MD; and B. Holben, T. Eck, A. Smirnov, A. Sinyuk, J. Schafer, M. Sorokin, and I. Slutsker

2:15 PM
J56.4
An Observational Study on the Impact of Saharan Aerosol Layer on Thermodynamical Parameters in the Mid-Atlantic during the AEROSE 2007 Campaign
Ricardo K. Sakai, Howard Univ., Beltsville, MD; and A. Flores, E. Joseph, N. Nalli, B. B. Demoz, and V. Morris
2:30 PM
J56.5
Identification of dust source regions and dust emission trends across North Africa and the Middle East using MISR satellite observations
Yan Yu, NASA/California Institute of Technology Jet Propulsion Laboratory, Pasadena, CA; and O. V. Kalashnikova, M. Garay, and M. Notaro
2:45 PM
J56.6
Hyperspectral and Polarimetric Fire Emission Characterization from the NASA ER-2 Aircraft
Olga Kalashnikova, JPL, Pasadena, CA; and M. Garay, F. Xu, D. J. Diner, K. Le, G. Hully, R. Duren, S. Hook, J. H. Seinfeld, K. Bates, C. Kenseth, S. Kong, and C. Cappa

3:00 PM-3:30 PM: Thursday, 11 January 2018


Coffee Break

3:30 PM-4:45 PM: Thursday, 11 January 2018

Recording files available
Session 13
Greenhouse Gases—Part III
Location: Room 18CD (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Cochairs: Abhishek Chatterjee, USRA; Sean Crowell, Univ. of Oklahoma; Scott Denning, Colorado State Univ.
3:45 PM
13.2
Direct Space-Based Observations of Anthropogenic CO2 Emission Areas from OCO-2 and Comparison with Emission Inventories' Spatial Distribution
Iolanda Ialongo, Finnish Meteorological Institute, Helsinki, Finland; and J. Hakkarainen and J. Tamminen

4:00 PM
13.3
Quantifying the Impact of Mesoscale and Synoptic-Scale Transport on XCO2 for Robust Flux Inference
Gretchen Keppel-Aleks, Univ. of Michigan, Ann Arbor, MI; and S. Doney, A. D. Torres, and M. Fendrock
4:30 PM
13.4
The GeoCarb Mission
Berrien Moore III, National Weather Center/Univ. of Oklahoma, Norman, OK; and S. Crowell
Recording files available
Joint Session 59
Joint Session with the Committee on Atmospheric Chemistry. Part VI: Air Quality Impacts on Society and the Environment Particulate Matter Studies
Location: 412 (Hilton) (Austin, Texas)
Hosts: (Joint between the 20th Conference on Atmospheric Chemistry; and the 20th Joint Conference on the Applications of Air Pollution Meteorology with the A&WMA )
Chair: Jared Lee, NCAR
3:30 PM
J59.1
Assessing the Impact of Power Plants on PM10 in South Korea using a Modeling Approach
Il Soo Park Sr., Hankuk Univ. of Foreign Studies, Korea-Latin America Green Convergence Center, Yongin-si, Korea, Republic of (South); and S. S. Ha Jr., Y. W. Jang Jr., S. H. Jang Jr., K. W. Chung Sr., M. S. Park Jr., C. K. Song, B. G. Kim, C. H. Kim Sr., and W. J. Lee
3:45 PM
J59.2
Mapping the PM Emissions Exposure Risk due to Hydraulic Fracturing in Pennsylvania
Z. Banan, Penn State Univ., Univ. Park, PA; and J. M. Gernand

4:00 PM
J59.3
An Approach for Straw Burning in China to Minimize Air Pollution
Yongqiang Liu, USDA Forest Service, Athens, GA; and L. Zhang
4:15 PM
J59.4
High Resolution Air Quality Modeling of Emissions, Transformation, and Fate of Canadian Oil Sands Pollutants
Paul A. Makar, EC, Toronto, ON, Canada; and A. Akingunola, C. Stroud, C. Whaley, A. Dastoor, J. Chen, M. D. Moran, J. Zhang, J. Soares, Y. A. Aklilu, B. Pabla, M. Sheppard, K. Hayden, A. Robichaud, S. M. Li, A. Cole, L. Zhang, R. M. Staebler, J. Liggio, M. Gordon, J. Aherne, I. Wong, J. Kirk, K. Scott, P. Cheung, Q. Zheng, and W. Gong

3:30 PM-5:00 PM: Thursday, 11 January 2018

Recording files available
Joint Session 60
Natural Aerosols in the Atmosphere: Emissions through Impacts—Part II
Location: Room 12A (ACC) (Austin, Texas)
Hosts: (Joint between the 10th Symposium on Aerosol-Cloud-Climate Interactions; and the 20th Conference on Atmospheric Chemistry )
Cochairs: Thomas E. Gill, Univ. of Texas; Vernon Morris, Howard University; Heather Holmes, Univ. of Texas
3:30 PM
J60.1
Wildfire Smoke Exposure Modeling: Investigating CMAQ-Modeled Aerosol Concentrations Using a Satellite-Based Wildfire Emissions Inventory
Cesunica Ivey, Univ. of Nevada, Reno, NV; and C. Liu, Y. Liu, H. Chang, M. Strickland, and H. A. Holmes

3:45 PM
J60.2
On the Relationship between Biogenic Aerosol Concentrations and Anthropogenic Emissions of Nitrogen Oxides and Organic Compounds
William R. Stockwell, Univ. of Texas, El Paso, TX; and D. R. M. Fitzgerald, D. Campbell, R. Perea, D. R. Stewart, and E. Saunders
4:00 PM
J60.3
Aerosol Transport and Photochemical Evolution over Baltimore–Washington Region Using Modeling and Observations
Mengsteab H. Weldegaber, Howard Univ., Washington, DC; and S. T. Gebremariam, S. Li, B. B. Demoz, and V. R. Morris

4:30 PM
J60.5
Potential Sources, Characteristics, and Controls over Emissions of Marine Ice Nucleating Particles
Thomas C. J. Hill, Colorado State Univ., Fort Collins, CO; and F. Malfatti, G. P. Schill, C. S. McCluskey, M. V. Santander, A. M. Rauker, L. Johnson, E. J. T. Levin, K. A. Moore, K. J. Suski, H. A. Al-Mashat, G. C. Cornwell, C. Lee, R. E. Cochran, J. V. Trueblood, V. H. Grassian, M. Harvey, K. A. Prather, S. M. Kreidenweis, and P. J. DeMott

4:45 PM
J60.6
New Particle Formation in the Mid-Latitude Upper Troposphere
Duncan Axisa, Droplet Measurement Technologies, Longmont, CO; and J. C. Wilson, J. Kazil, and M. Reeves