aerosols – Healthy Planet Action Coalition

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Greg Slater -Update on a Proposal for a First Antarctic SAI Test (FAST), HPAC, February 5, 2026

https://www.youtube.com/watch?v=i21bLM5Kebc Greg Slater -Update on a Proposal for a First Antarctic SAI Test (FAST), HPAC, February 5, 2026 Greg Slater will be presenting an "Update On a Proposal For the 'First Antarctic SAI Test' (FAST)”. He will be discussing the need to have the first tests of SAI…

HPACAdminFebruary 5, 2026

1 degree C warming above normal aerosols albedo Arctic refreezing carbon balance carbon burden Carbon Capture and Storage carbon cycle response Carbon removal carbon removal reduces natural feedback emissions climate restoration climate triad Earth systems Earth's energy imbalance geoengineering Marine cloud brightening methane natural geoengineering presentation

Glenn Weinreb – Saving the Planet with a “Climate Moonshot” R&D Program, HPAC, January 22, 2026

https://www.youtube.com/watch?v=gGIeKRWWdEY Glenn Weinreb - Saving the Planet with a "Climate Moonshot" R&D Program, HPAC, January 22, 2026 Glenn Weinreb is Director of the AspenCore Climate Solutions Research Center. Glenn will explore with us the following question: Is it possible for HPAC to save the planet with a climate…

HPACAdminJanuary 22, 2026

1 degree C warming above normal 30 degrees north and south 350 ppm CO2 aerosols albedo Arctic refreezing atmospheric greenhouse gas concentration carbon burden carbon cycle response Carbon removal climate restoration climate triad clouds Cooling intervention governance implementation direct air capture Earth systems Earth's energy imbalance Engineered cooling Engineered cooling scenarios engineered cooling strategy response geoengineering Marine cloud brightening natural feedback emissions natural geoengineering negative emissions Ocean acidification Ocean response presentation Risk-Risk Analysis sequestration ship's fuels regulations solar radiation modification SRM stratospheric aerosols Temperature response threshold crossing tipping tropospheric aerosols warming in the pipeline

Global Heating Emergency Conference by HPAC, October 15 and 16, 2025

https://youtu.be/OTlZ4lQ5Evc?si=jUFm4ufvhsmL6knr Global Heating Emergency Conference by HPAC, October 15 and 16, 2025 Global Online Conference • October 15 – 16, 2025 (https://www.preventing2degrees.org) Description: In Paris in 2015, 195 countries committed to stopping global warming. But greenhouse gas emissions have continued to relentlessly increase. The latest science shows…

HPACAdminDecember 5, 2025

aerosols clouds Cooling intervention governance implementation Engineered cooling geoengineering Marine cloud brightening natural geoengineering ship's fuels regulations

Telltale for IMO Ship’s Fuel Regulations Causing Significant: Nitrogen Oxide Emissions

Telltale for the New IMO Ship’s Fuel Regulations Causing Significant Warming Since 2023: Atmospheric Nitrogen Oxide Emissions There has been a 67% reduction in ships' cloud-altering abilities after the International Maritime Organization’s ship’s fuel regulations limiting sulfur went into effect. Sulfur is a natural component of fossil fuels…

GuestDecember 5, 2025

aerosols albedo Cooling intervention governance implementation methane near-term cooling non-CO2 greenhouse gases presentation solar radiation modification SRM stratospheric aerosols

Community Discussion of Cynthia Sharf podcast and near-term cooling governance, HPAC, September 18, 2025

https://www.youtube.com/watch?v=NjSEwmIBph4 Community Discussion of Cynthia Sharf podcast and near-term cooling governance, HPAC, September 18, 2025 Cynthia Scharf is Senior Fellow - Climate Interventions at the Centre for Future Generations, steering our work on climate intervention technologies and briefing senior climate officials in the EU and globally on the…

HPACAdminSeptember 18, 2025

aerosols Engineered cooling engineered cooling strategy response geoengineering presentation solar radiation modification SRM stratospheric aerosols

Brian Soden – Climate Geoengineering: A Bad Idea Whose Time Has Come? HPAC, August 21, 2025

https://www.youtube.com/watch?v=kMK8DJQGGTw Brian Soden - Climate Geoengineering: A Bad Idea Whose Time Has Come? HPAC, August 21, 2025 We will be joined by Brian Soden who will share his reflections on his recent research paper stratospheric aerosol injection with black carbon: https://www.nature.com/articles/s43247-025-02466-z Brian Soden is a Professor of Atmospheric…

HPACAdminAugust 21, 2025

aerosols clouds global cooling pollutant ship's fuels regulations tropospheric aerosols

Explainer: How human-caused aerosols are ‘masking’ global warming (Carbon Brief)

First published at Carbon Brief by Zeke Hausfather on June 10, 2025 https://www.carbonbrief.org/explainer-how-human-caused-aerosols-are-masking-global-warming/ Human-caused emissions of aerosols – tiny, light‑scattering particles produced mainly by burning fossil fuels – have long acted as an invisible brake on global warming. This is largely because they absorb or reflect incoming sunlight and…

HPACAdminJune 13, 2025