Production mechanism, number concentration, size distribution, chemical composition, and optical properties of sea spray

1. Production mechanism, number concentration, size distribution, chemical composition, and optical properties of sea spray aerosols Nicholas Meskhidze, Markus Pettersand Kostas Tsigaridis Steering Committee: Tim Bates, National Oceanic and Atmospheric Administration Colin O’Dowd, National University of Ireland Galway Jeff Reid, US Naval Research Laboratory, Marine Meteorology Division Ernie R. Lewis, Brookhaven National Laboratory

2. Accommodations

3. A couple of things in the binders • Workshop agenda • Campus map • List of restaurants • Also: • Wireless access • W2 forms for domestic participants • Copy of a passport and/or visa for internationals

4. Objectives Identify the most critical open questions and develop a strategic science prioritization plan for conducting and facilitating novel research regarding sea spray aerosol Identify the pressing science questions and rank them by their highest impact on reducing the current uncertainty ranges Prioritize the research agenda and identify areas of investigation by the magnitude of their impact on proposed science questions Rank the difficulty/feasibility for resolving each processes using currently available measurement and remote sensing techniques and modeling approaches Identify future strategies, including new measurement techniques and long-term clean oceanic atmospheric aerosol measurements which can provide significant constraints on different processes Disseminate workshop findings and results in a form of a white paper.

5. June 4: Morning – Participants travel to Raleigh 1:00 – Registration at the ballroom of the Brownstone Hotel 1:30 – 2:00 PM Welcome (some logistical issues) 2:00 – 3:00 Prof. Gerrit de Leeuw : “Sea spray Aerosol Production: an overview of current knowledge” 3:00 – 3:30 Coffee break 3:30 – 5:00 Overview vision/breakout group introductions 5:30 - Poster showing with food

6. June 5: 7:30 -7:45 AM Pick up at the Hotel and drive to the Jordan Hall, NCSU campus 8 AM: Breakfast (at Rm#1216 Jordan Hall II) 8:30 – 8:40 Outline of charge to working groups (please sign up for your preferred breakout session(s)). Breakout sessions by discipline:Remote Sensing, Regional and Global Modeling, Laboratory Measurements, andField Measurements (we need volunteers to chair the sessions) 8:40 – 10:30 Breakout charge one – State of the science. Working groups based on the historical Prospective and Identification of Current Problems 10:30 – 10:50 Coffee break 10:50 – 12:30 Breakout group presentations with plenary discussion 12:30 – 2:00 Lunch

7. Charges to the working groups Give brief overview of Give specific examples of different measurements/modeling/ remote sensing, approaches that were taken, techniques that were used, lessons that were learned, and science that was advanced. What were successes and difficulties of the field campaigns, lab measurements, remote sensing and modeling? Which important parameters were missing? Where the measurements specifically designed/representative of the marine conditions? What were the conclusions? In which parts do we have consensus and which parts contradict?

8. Can we revalidate some of the data? If yes, what can be used as a benchmark? Can we develop more authoritative method to reduce the uncertainty? 15 min. presentation + 10 min discussion. Write-up (will help with the white paper)

9. 2:00 – 3:30 Breakout charge two – Ways forward. New working groups will be created based on the themes: Source function, Budget (transport and removal processes), Aging (size distribution dynamics, CCN, IN), and Optical Properties. Charge: identify the pressing science questions, future strategies, including new modeling and measurement techniques 3:30 – 3:50 Coffee break 3:50 – 5:30 Breakout group presentations with plenary discussion 5:30 – 6:00 Drive back to the hotel After 6 PM Dinner on you own

10. Charge to Breakout “Ways Forward” • What are the type of studies that need to be done to make progress? (e.g. new satellite mission, field study, lab study ...) • What new techniques or approaches are needed to overcome the current limitations? • What are the limitations of the current techniques (i.e., signal to noise ratio, different methodologies…) ? • Do we need cheap “lab” measurements and many of them, or one or two big field campaigns (VOCALS style). • Start thinking about prioritization (what should we do first, what does give us the biggest benefit in a challenging funding environment).

11. Jun 6: 7:30 – 7:45 AM Pick up at the Hotel and drive to the Jordan Hall, NCSU campus 8 AM: Breakfast (at Rm#1214 Jordan Hall II) 8:30 - 9:00 Breakout charge three – Workshop synthesis. Breakout groups return to their discipline. Brief discussion on prioritization perspectives. 9:00 – 10:30 Prioritization matrix 10:30-10:50 Coffee break 10:50 – 12:00 Summary and plenary discussion 12:00 Meeting adjourned

12. Source function

13. Thank you!