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Climate Engineering
Gordon Research Conference

Radiation Management Climate Engineering: Technology, Modeling, Efficacy, and Risks

Dates

July 23-28, 2017

Location

Grand Summit Hotel at Sunday River
Newry, ME Site Information

Organizers

Chairs:
David Keith & Alan Robock

Vice Chairs:
Douglas MacMartin & Trude Storelvmo

Application Deadline

Applications for this meeting must be submitted by June 25, 2017. Please apply early, as some meetings become oversubscribed (full) before this deadline. If the meeting is oversubscribed, it will be stated here. Note: Applications for oversubscribed meetings will only be considered by the Conference Chair if more seats become available due to cancellations.

Meeting Description

Climate engineering, also called geoengineering, is the idea of deliberately intervening in Earth's global radiation budget with the goal of reducing some of the risks of accumulating greenhouse gases. The two most frequently discussed possibilities are injecting aerosols into the stratosphere or adding aerosols to low marine clouds, both of which would reflect more sunlight to space; other possibilities include artificially thinning cirrus cloud cover to increasing outgoing longwave radiation. This conference will focus on the scientific questions associated with this set of technologies with the goal of fostering a better understanding of their efficacy and risks.

Contributors

Meeting Program

Sunday
2:00 pm - 9:00 pmArrival and Check-in
6:00 pmDinner
7:30 pm - 7:40 pmWelcome / Introductory Comments by GRC Site Staff
7:40 pm - 9:30 pmKeynote Session: The Known and Unknown in Geoengineering
Discussion Leader: Oliver Morton (The Economist, United Kingdom)
7:40 pm - 7:55 pmOpening Remarks
7:55 pm - 8:25 pmKen Caldeira (Carnegie Institution for Science, USA)
"What We Know About Geoengineering"
8:25 pm - 8:35 pmDiscussion
8:35 pm - 9:05 pmMyles Allen (University of Oxford, United Kingdom)
"What We Don't Know About Geoengineering"
9:05 pm - 9:15 pmDiscussion
9:15 pm - 9:30 pmGeneral Discussion
Monday
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmStratospheric Chemistry
Discussion Leader: Donald Wuebbles (University of Illinois at Urbana-Champaign, USA)
9:00 am - 9:40 amDavid Fahey (NOAA Earth System Research Laboratory, USA)
"Messing with Stratospheric Chemistry: What’s At Stake"
9:40 am - 10:00 amDiscussion
10:00 am - 10:30 amCoffee Break
10:30 am - 11:10 amSimone Tilmes (National Center for Atmospheric Research, USA)
"Impact of Sulfate Aerosol Geoengineering on Stratospheric Ozone"
11:10 am - 11:30 amDiscussion
11:30 am - 12:10 pmFrank Keutsch (Harvard University, USA)
"Stratospheric Solar Radiation Management Beyond Sulfate"
12:10 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
3:00 pm - 4:00 pmPower Hour
The GRC Power Hour is an optional informal gathering open to all meeting participants. It is designed to help address the challenges women face in science and support the professional growth of women in our communities by providing an open forum for discussion and mentoring.
Organizers: Trude Storelvmo (Yale University, USA) and Kate Ricke (University of California, San Diego, USA)
4:00 pm - 6:00 pmPoster Session
6:00 pmDinner
7:30 pm - 9:30 pmStratospheric Dynamics
Discussion Leader: Owen Toon (University of Colorado, USA)
7:30 pm - 8:10 pmUlrike Niemeier (Max Planck Institute for Meteorology, Germany)
"Stratospheric Sulfur Injections - Uncertainties, Limits and Impacts"
8:10 pm - 8:30 pmDiscussion
8:30 pm - 9:10 pmMichael Mills (National Center for Atmospheric Research, USA)
"Stratospheric Dynamical Responses to Stratospheric SO2 Injections"
9:10 pm - 9:30 pmDiscussion
Tuesday
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmMarine Cloud Brightening
Discussion Leader: Olivier Boucher (Institut Pierre Simon Laplace, France)
9:00 am - 9:40 amGraham Feingold (National Oceanic and Atmospheric Administration, USA)
"What Process-Level Understanding of Aerosol-Cloud Interactions Has Taught Us About the Potential for Successful Marine Cloud Brightening"
9:40 am - 10:00 amDiscussion
10:00 am - 10:30 amCoffee Break
10:30 am - 11:10 amJames Haywood (University of Exeter, United Kingdom)
"Marine Cloud Brightening: Modelling and Observations from Natural Analogues"
11:10 am - 11:30 amDiscussion
11:30 am - 12:10 pmPhilip Rasch (Pacific Northwest National Laboratory, USA)
"Attempts to Tease Out the Mechanisms Responsible for Large Scale Climate Responses to Marine Cloud Brightening"
12:10 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 6:00 pmPoster Session
6:00 pmDinner
7:30 pm - 9:30 pmCirrus Thinning
Discussion Leader: David Mitchell (Desert Research Institute, USA)
7:30 pm - 8:10 pmUlrike Lohmann (ETH Zurich, Switzerland)
"Cirrus Seeding: Understanding the Complicated Little Sister of Stratospheric Geoengineering"
8:10 pm - 8:30 pmDiscussion
8:30 pm - 9:10 pmDaniel Cziczo (Massachusetts Institute of Technology, USA)
"Inadvertent Modification of Cirrus Clouds Due to Climate Engineering"
9:10 pm - 9:30 pmDiscussion
Wednesday
7:30 am - 8:30 amBreakfast
8:30 amGroup Photo
9:00 am - 12:30 pmAgriculture, Hydrological, and Ecosystem Impacts
Discussion Leader: Helene Muri (University of Oslo, Norway)
9:00 am - 9:40 amLili Xia (Rutgers University, USA)
"Stratospheric Aerosol Impacts on Agriculture and Air Pollution"
9:40 am - 10:00 amDiscussion
10:00 am - 10:30 amCoffee Break
10:30 am - 11:10 amJohn Moore (Beijing Normal University, China)
"Sea Level Rise Under Geoengineering"
11:10 am - 11:30 amDiscussion
11:30 am - 12:10 pmGabriel Vecchi (National Oceanic and Atmospheric Administration, USA)
"SRM Experiments with a High-Resolution Climate Model: Global, Regional and Extreme Event Impacts"
12:10 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 6:00 pmPoster Session
6:00 pmDinner
7:00 pm - 7:30 pmBusiness Meeting
Nominations for the Next Vice Chair; Fill in Conference Evaluation Forms; Discuss Future Site and Scheduling Preferences; Election of the Next Vice Chair
7:30 pm - 9:30 pmUncertainty, Feedback, and Attribution
Discussion Leader: Mark Lawrence (Institute for Advanced Sustainability Studies, Germany)
7:30 pm - 8:10 pmBen Kravitz (Pacific Northwest National Laboratory, USA)
"Geoengineering as a Design Problem"
8:10 pm - 8:30 pmDiscussion
8:30 pm - 9:10 pmPiers Forster (University of Leeds, United Kingdom)
"Comparing Different Geoengineering Schemes with Mitigation - Effectiveness and Side Effects"
9:10 pm - 9:30 pmDiscussion
Thursday
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmEconomics and Impact Assessment
Discussion Leader: Martin Weitzman (Harvard University, USA)
9:00 am - 9:40 amGernot Wagner (Harvard University, USA)
"Feedbacks Between Solar Geoengineering and Mitigation Decisions"
9:40 am - 10:00 amDiscussion
10:00 am - 10:30 amCoffee Break
10:30 am - 11:10 amKate Ricke (University of California, San Diego, USA)
"A Portfolio Approach to Geoengineering Technology Assessment"
11:10 am - 11:30 amDiscussion
11:30 am - 12:10 pmGeoffrey Heal (Columbia University, USA)
"Notes on the Economics of Geoengineering"
12:10 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 5:30 pmPoster Session
5:30 pm - 7:30 pmEngineering Aspects and Outdoor Experimentation
Discussion Leader: Riley Duren (National Aeronautics and Space Administration, USA)
5:30 pm - 6:10 pmThomas Ackerman (University of Washington, USA)
"Proposed Outdoor Experiments in Monterey Bay"
6:10 pm - 6:30 pmDiscussion
6:30 pm - 7:10 pmJohn Dykema (Harvard University, USA)
"A Critical Survey of Small-Scale Outdoor Experiments to Test Climate Engineering Risk and Efficacy"
7:10 pm - 7:30 pmDiscussion
8:00 pmDinner
Friday
7:30 am - 8:30 amBreakfast
9:00 amDeparture
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