Marine Cloud Brightening

Special guests, Stephen Salter and Peter Wadhams, join Paul Beckwith and Regina Valdez to discuss Marine Cloud Brightening. Stephen Salter is one of the leading voices of the Marine Cloud Brightening (MCB) movement.

As average global temperatures rise, increasing the reflectivity of clouds over the ocean has been studied as a geoengineering method to reflect more solar radiation away from the Earth thus reducing and reversing the warming caused by excess CO2 concentration in the atmosphere.

This CEF program was recorded at COP26, Glasgow, Scotland, in the Durdle Door press conference room on November 4th, 2021, and published on December 13th, 2021. This presentation is brought to you through a collaboration with FacingFuture.Earth /// FacingFuture.TV.

Topics discussed include the following:

• Why some clouds, such as cumulonimbus are dark, and some are light
• Using nozzles installed on ships to spray very small drops of filtered seawater 0.8 microns in diameter.
• Ships spraying filtered droplets of sea water could be deployed to reverse sea level rise and/or save the Arctic sea ice.
• Governments of countries could decide on targets for sea-surface temperatures
• Cost estimates to deploy a fleet of 800 spray vessels/ships
• Advantages of MCB as a geoengineering technique to prevent the worst extremes of climate change
• How we can change the reflectivity of clouds in areas that will most benefit the Earth.

Links:

• Earth is dimming due to climate change

Special Guests:

• Stephen Salter - Emeritus Professor of Engineering Design at the University of Edinburgh and is responsible for creating the concept of the mechanical enhancement of clouds to increase their reflectivity. Professor Salter is a Member of the Order of the British Empire.

• Dr. Peter Wadhams - Peter Wadhams ScD, is emeritus professor of Ocean Physics, and Head of the Polar Ocean Physics Group in the Department of Applied Mathematics and Theoretical Physics, University of Cambridge. He is best known for his work on sea ice.

Panelists:

• Paul Beckwith - Climate Systems Scientist. Professor at the University of Ottawa’s Paleoclimatology Laboratory as well as at Carleton University

• Regina Valdez - Program Director, Climate Reality Project, NYC. GreenFaith Fellow and LEED Green Associate

Video Production:

• The UNFCCC’s COP26 Media Crew in the Durdle Door Press Conference Room

• Charles Gregoire – Climate Reality Leader, Electrical Engineer, Webmaster and IT prime for FacingFuture.Earth and the Climate Emergency Forum

• Heidi Brault - Climate Reality Leader, BA(Psychology), Library & Information Technician Diploma - Video production and website assistant - Organizer and convener, Metadata technician, COP26 Team Lead for FacingFuture.Earth and the Climate Emergency Forum.

Acknowledgements

Thanks to the following organizations for making this program at COP26 possible:

• Tzu-Chi Foundation
• Interfaith Center for Sustainable Development
• International Society of Ecological Economics
• Sustainable Population Australia

Attributions:

Background Music:

• Title: Through the City II
• Author: Crowander
• Source: crowander.com

Image and Video:

• Image and Video Attributions