Whiteface 2016 Agenda

DAY 1 
8:00-8:30Light breakfast and Welcome (A. Carlton and S. Lance)
8:30-9:00Intro Whiteface Mtn. Observatory and history of cloud sampling and chemical climatology (J. Schwab)
9:00-10:00Recent measurements (K Pratt)
WRF-Chem and CMAQ results for WFM (M. Barth)
Process model results for WFM (B. Ervens)
10:00-1:30Tours of lodge and summit observatories
(Paul Casson, Jed Dukett, Jim Schwab, Rich Brandt)
10:00-11:30Group 1 Summit transport and tour
11:30-12:30Group 1 Break and Lunch
12:30-1:30Group 1 Tour lodge trailer and lower sampling site
10:00-10:15Group 2 break
10:15-11:15Group 2 Tour lodge trailer and lower sampling site 
11:15-12:00Group 2 Lunch
12:00-1:30Group 2 Summit transport and tour
1:30-2:30Synthesis of mtn. top experiments, including Great Dun Fell and FEBUKO/HCCT, key knowledge gaps in cloud chemistry (J. Collett and H. Herrmann)

 Are these the right questions?
1.) Can the clear-sky bias in chemical characterization of the troposphere be quantified with a coordinated field study(s)? How well can an intensive cloud-chemistry-focused field study reveal oxidation products and related processes from aqueous chemistry?
Discussion Leaders: Annmarie Carlton and Ewan Crosbie

2.) How much do aqueous-phase oxidation and cloud processing affect gas-phase organic compound mixing ratios? To what extent is the fate and transport different from gas-phase only processing?
Discussion Leaders: Hartmut Herrmann and Delphine Farmer

3.) How does water-mediated processing modify the size, composition, and light absorption properties of atmospheric aerosols? With respect to organics, how does cloud processing alter the organic aerosol oxidation state or O:C ratio?  Do aqueous phase functionalization reactions lead to increased organic aerosol mass, or do fragmentation mechanisms dominate, leading to a decrease in organic aerosol mass following cloud processing? Can we observe enhancements of BrC or formation of OA-metal ligands, such as iron-oxalate, that also absorb light? Does the toxicity of particles change?
Discussion Leaders: Sara Lance and Rodney Weber

4.) What are the key oxidants driving aqueous phase chemistry?  How does cloud chemistry change between daylight and nighttime conditions?   
Discussion Leaders: Faye McNeil and Jonathan Raff

5.) Are there unique (or at least useful) chemical tracers of cloud processing? What are the dominant aqueous-phase chemical mechanisms involving organic aerosol?
Discussion Leaders: Barbara Turpin and Kerri Pratt

6.) Can vertically-resolved measurements of chemical species in clouds provide information about vertical mixing and boundary layer free troposphere exchange?
Discussion Leaders: Thanos Nenes and Eric Leibensperger

7.) Are aqueous phase biological processes relevant/important?
Discussion Leader: Pierre Herckes and Paul Shepson

3:15-3:30 break
3:15-4:15Breakout groups revising science questions (summaries are above)
4:15-5:15Report out by break out groups (summaries are above)
5:15-6:00Components of a Cloud Chemistry Field Experiment (Richard Leaitch)


DAY 2 
8:30-8:45Recap of previous day and plans for second day (AM Carlton, M Barth, S Lance)
8:45-10:15Cloud Experiment Design breakout groups: Outline experimental design with aircraft and mountain top sampling components. 4 breakout groups addressing same goal of designing experiment (two for mountain top, two for aircraft)

Report back to entire group

Group 1 leader: Jim Schwab (mountain)
Group 2 leader: Gannet Hallar (mountain)
Group 3 leader: Paul Shepson (aircraft)
Group 4 leader: Jorgen Jensen (aircraft)

1:00-1:15Cloud Water Sampling Protocol Used at Whiteface Mountain Observatory (Paul Casson)
1:00-3:00Breakout into 2 Teams:  1) observations team, 2) modeling team

Report back to plenary with discussion on field experiment design

1) observations team

2) modeling team

4:30-5:30Organized discussion addressing expected outcomes and future directions (S. Lance, AM Carlton)

Download agenda (pdf).




ACOM | Atmospheric Chemistry Observations & Modeling