Whiteface 2016 Agenda

DAY 1  
8:00-8:30 Light breakfast and Welcome (A. Carlton and S. Lance)
8:30-9:00 Intro Whiteface Mtn. Observatory and history of cloud sampling and chemical climatology (J. Schwab)
9:00-10:00 Recent measurements (K Pratt)

 

WRF-Chem and CMAQ results for WFM (M. Barth)

Process model results for WFM (B. Ervens)
10:00-1:30 Tours of lodge and summit observatories

(Paul Casson, Jed Dukett, Jim Schwab, Rich Brandt)
10:00-11:30 Group 1 Summit transport and tour
11:30-12:30 Group 1 Break and Lunch
12:30-1:30 Group 1 Tour lodge trailer and lower sampling site
10:00-10:15 Group 2 break
10:15-11:15 Group 2 Tour lodge trailer and lower sampling site 
11:15-12:00 Group 2 Lunch
12:00-1:30 Group 2 Summit transport and tour
1:30-2:30 Synthesis of mtn. top experiments, including Great Dun Fell and FEBUKO/HCCT, key knowledge gaps in cloud chemistry (J. Collett and H. Herrmann)
2:30-3:15

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

 

DAY 2  
8:30-8:45 Recap of previous day and plans for second day (AM Carlton, M Barth, S Lance)
8:45-10:15 Cloud 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)
10:15-10:30 break
10:30-12:00

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)
12:00-1:00 Lunch
1:00-1:15 Cloud Water Sampling Protocol Used at Whiteface Mountain Observatory (Paul Casson)
1:00-3:00 Breakout into 2 Teams:  1) observations team, 2) modeling team
3:00-3:15 break
3:15-4:30

Report back to plenary with discussion on field experiment design

1) observations team

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

Download agenda (pdf).



 

ACOM Type
Cloud Chemistry