Atmospheric Chemical
Mechanisms
December 10-12, 2008
The ARC, University of California Davis
Preliminary Program as of September 3, 2008
Wednesday – December 10, 2008
7:30 – 8:00
REGISTRATION and CONTINENTAL BREAKFAST
8:00 – 8:15
Introductions
Anthony Wexler, UC Davis
Ian Barnes, University of Wuppertal
8:15- 9:00
PLENARY LECTURE I
Recent Developments in Gas Phase Chemical Mechanisms
Mike Jenkin, Imperial College London
9:00
SESSION A
UNCERTAINTIES IN CHEMICAL MECHANISMS: CURRENT STATUS
AND IMPORTANT ISSUES
MODERATOR: Paul Ziemann, University of California, Riverside
This session will include mainly basic gas phase chemistry and some contributions on theory which
aid mechanism development. Advances in aromatic hydrocarbon chemical mechanisms and
biogenic mechanisms will feature prominently. Contributions on the chemistry of organic nitrates/
hydroperoxides are especially welcome, including new emerging methodologies for measurement
of intermediates and products which will help improve mechanism elucidation and gas phase
sources of HONO.
9:00-9:20
Recent Advances in Aromatic Hydrocarbon Gas Phase Mechanisms
Ian Barnes, University of Wuppertal
9:20 – 9:40
Uncertainties in Ozone / Terpene Mechanisms
George Marston, University of Reading
9:40- 10:00Theoretical Work on Terpene Systems
Luc Vereecken, University of Leuven, Belgium
10:00 – 10:20
BREAK
10:20 – 10:40
TBA
INVITED
10:40 – 11:00
TBA
11:00 – 11:45
PLENARY LECTURE II
NEW EVOLVING CHEMISTRIES AND THEIR IMPLICATIONS
TBA
11:45 – 1:15 LUNCH
1:15
SESSION B
NEW EVOLVING CHEMISTRIES
MODERATOR: Theo Brauers, Jülich Research Centre
This session will cover new issues raised from recent field experiments and modeling studies such as
i) the proposals of OH formation from isoprene derived organic peroxy radicals, ii) the fate of
nitrate radicals in isoprene oxidation, which significantly affect NOx and ozone formation, iii)
satellite observations of carbonyls, e.g. how existing mechanisms cope with simulating HCHO and
glyoxal and iv) observations in polluted urban scenarios, e.g. Mexico City. While the focus of the
session is gas phase, observations of organic aerosol, e.g. OOA vs. HOA, BSOA vs. ASOA, and
other such issues might also be addressed.
1:15 – 1:35
Uncertainties in Radical Production, Oxygenates, and SOA Formation
Rainer Volkamer, University of Colorado at Boulder
1:35 – 1:55
Cloud Processing
Barbara Turpin, Rutgers University
1:55 – 2:15
New Chemistries – Evidence from Field Experiments
Andreas Hofzumahaus, Jülich Research Center
INVITED
2:15 – 2:35 Sensitivity of Ozone in Houston to New Radical Source Reactions
Greg Yarwood, Environ Corporation
2:35 – 2:55TBA
3:00 – 3:20
BREAK
3:20
SESSION C
GAS PHASE TO SECONDARY ORGANIC AEROSOLS
MODERATOR: Rainer Volkamer, University of Colorado at Boulder
This session will explore experimental and modeling investigations on the evolution of gas phase
low-volatility organics which lead to or promote secondary organic aerosol formation. Issues
relating directly to mechanisms for semi-volatiles, oligomer formation and the role of small
organics in SOA formation may be addressed as well as phase transfer and surface processes.
3:20 – 3:40
Chemical Mechanisms of SOA Formation from Alkanes and Alkenes
Paul Ziemann, University of California, Riverside
3:40 – 4:00
Secondary Organic Aerosol Formation
Rich Kamens, University of North Carolina Chapel Hill
4:00 – 4:20
4:20 – 4:40
TBA
Title TBA
Gordon McFiggans, University of Manchester
4:40 – 5:00
TBA
5:00 – 7:00
POSTER VIEWING AND RECEPTION
Thursday – December 11, 2008
7:30 – 8:00
CONTINENTAL BREAKFAST
8:00 – 8:45
PLENARY LECTURE III
The Chemistry of Secondary Organic Aerosol Formation: Current Consensus
8:45 -
SESSION D
CONDENSED AND MULTIPHASE PHASE CHEMISTRY
MODERATOR: Barbara Turpin, Rutgers University
This session covers current issues in condensed, multiphase and heterogeneous chemistry including
phase transfer, general surface processes, and liquid phase mechanisms as well as tactical
approaches to interfacing liquid phase and gas phase mechanisms.
8:45 – 9:05Current Issues in Multiphase Chemistry
Hartmut Hermann, Leibniz Institute for Tropospheric Research
9:05 – 9:25Uptake of HO2 and N2O5
Joel Thornton, University of Washington
9:25 – 9:45
Photo-Enhanced Deposition of Trace Gases at the Interface of Organic Surfaces
Christian George, University of Lyon
9:45 – 10:05
BREAK
10:05 – 10:25
TBA
10:25 – 10:45
TBA
10:45
SESSION E
CHEMICAL MECHANISM EVALUATION
MODERATOR: William Carter, University of California, Riverside
This session will cover smog chamber evaluations for all phases and comparison with field data,
concentrating on mechanistic detail and chemical understanding rather than mechanisms that have
been optimized to recreate for profiles (although contributions in mechanism evaluation are
encouraged).
10:45 – 11:05
EUROCHAMP-2
Peter Wiesen, University of Wuppertal
11:05 – 11:25
Problems and Progress in Using Environmental Chambers for
Evaluating Mechanisms
David Cocker, University of California, Riverside
11:25 – 11:45
Title TBA
Urs Baltensperger, Paul Scherrer Institute INVITED
11:45 – 12:05
Gas-Phase Precursors to Anthropogenic SOA: Using the MCM to Probe Detailed
Observations of Aromatic Photo-Oxidation
Andrew Rickard, University of Leeds
12:05 – 12:25
Work on Modeling of Field Experiments (Nitrates)
Roberto Sommariva, National Oceanic and Atmospheric Administration
12:25 – 1:30
LUNCH
1:30 -
SESSION F
DEVELOPMENTS IN MECHANISM REDUCTION TECHNIQUES
MODERATOR: Mike Jenkin, Imperial College London
Mechanism reduction and lumping is a key bridge to policy applications and is therefore an
essential element in atmospheric chemistry model development. This session will include
contributions on formal approaches to reduction, lumping and sensitivity analysis, e.g. high
dimensional model representation and more chemical approache,s as well as difficulties and
uncertainties in reducing representations of SOA formation.
1:30 – 1:50 TBA
1:50 – 2:10 A Condensed Version of SAPRC-07
William Carter, University of California, Riverside
2:10 – 2:30 Title TBA
Bernard Aumont, University of Paris
2:30 – 2:50
A New Condensed Toluene Mechanism for Carbon Bond
Gary Whitten, Smog Reyes
2:50 – 3:10 Title TBA
Michael Jenkin, Imperial College London
3:10 – 3:30 BREAK
3:30 – 4:30
TBA
Friday – December 12, 2008
7:30 – 8:00
CONTINENTAL BREAKFAST
8:00 – 8:50
PLENARY LECTURE IV
The Present State and Future Direction of Policy Formation
TBA
8:50
SESSION G
CHEMISTRY IN THE FREE TROPOSPHERE
MODERATOR: TBA
This session will examine new issues in upper tropospheric chemistry particularly those related to
temperature dependent oxidation chemistry and climate change issues. Issues include alkoxy radical
reactions, especially dissociation and isomerization vs. reaction with O2; pressure and temperature
dependencies generally, e.g. for OH addition – how well do we know the kinetics? The pressure
and temperature dependence of carbonyl photolysis is also relevant. Why don’t the models match
the observed NO to NO2 conversions above the mixing height? How do we put these effects into
global models?
8:50 – 9:10 Overview of Outcome of the SCOUT Project
John Crowley, Max Planck Institute for Chemistry
INVITED
9:10 – 9:30 NOy Chemistry in the Free Troposphere
William Stockwell, Howard University
9:30 – 9:50
Representation of Free Tropospheric Chemistry in Global Models
Speaker TBA
9:50 – 10:10
Problems Above the Mixing Height
Speaker TBA
10:10 – 10:30
BREAK
10:30 -
SESSION H
CHEMICAL MECHANISM IMPLEMENTATION FOR POLICY
MODERATORS: Ajith Kaduwela, California Air Resources Board
Deborah Luecken, U.S. Environmental Protection Agency
Fundamental chemical issues and needs have been addressed in the preceding sessions. This session
will focus on the difficulties of bridging fundamental knowledge with policy-making and the
methods used for introducing chemical issues, especially emergent chemical science, in policy
formation. New and innovative policy applications of chemical mechanisms rather than just
applications are to be discussed in order to address whether the mechanisms currently available are
fit for the purpose.
10:30 – 10:50
Title TBA
Ajith Kaduwela, California Air Resources Board
10:50 – 11:10
Multi-Pollutant Policy Applications
Karen Wesson and Deborah Luecken, U.S. Environmental Protection Agency
11:10 – 11:30
Policy Formation in Europe
Dick Derwent, rdscientific
11:30 – 11:50
New Modeling Approaches in Houston and Relevance to Policy
Harvey Jeffries, University of North Carolina
11:50 – 12:10
Peer Review of SAPRC07
William Carter, UC Riverside
12:10 – 1:10 LUNCH
1:10 – 1:30
Title TBA
Daewon Byun, University of Houston
1:30 – 1:50 Title TBA
James Boylan, Georgia Department of Natural Resources
1:50 - 2:50
INVITED
PANEL DISCUSSION
Sustained Further Development in Atmospheric Chemistry Mechanisms
Panel Members TBA
2:50 – 3:15 Conference Summary
CONFERENCE SPONSORS
UC Davis Air Quality Research Center
California Air Resources Board
U.S. Environmental Protection Agency
INTROP (The European Science Foundation’s Interdisciplinary Tropospheric Research Programme)
For questions about the conference please contact :
Donna Reid, Outreach Manager, Air Quality Research Center at dvreid@ucdavis.edu