direct air capture – Healthy Planet Action Coalition

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

atmospheric greenhouse gas concentration carbon balance carbon burden Carbon Capture and Storage Carbon removal carbon sinks climate restoration climate triad direct air capture Earth systems Engineered cooling engineered cooling strategy response geoengineering natural geoengineering negative emissions presentation sequestration solar radiation modification SRM stratospheric aerosols

Paul Gambill – New Initiatives to Support Comprehensive Approaches to Controlling Global Heating, HPAC, November 13, 2025

https://www.youtube.com/watch?v=qK_dMzE7m5Q Paul Gambill - New Initiatives to Support Comprehensive Approaches to Controlling Global Heating, HPAC, November 13, 2025 Paul Gambill will be joining us to discuss his work on educating the public to understand that sunlight reflection methods will be needed in addition to emissions reductions and greenhouse…

HPACAdminNovember 13, 2025

Carbon removal carbon sinks climate restoration direct air capture Earth systems sequestration

What’s next for carbon removal? Undue Widespread Pessimism

Stratos, 500 million ton per year air capture unit by Occidental Petroleum in the Permian Basin, Texas What’s next for carbon removal? Undue false and widespread pessimism in the popular press. Companies have still drawn down only enough CO2 to cancel out a few hours of US emissions.…

HPACAdminNovember 6, 2025

carbon cycle response Carbon removal direct air capture Earth's energy imbalance Engineered cooling Engineered cooling scenarios engineered cooling strategy response geoengineering Ice Sheets Risk-Risk Analysis threshold crossing tipping

A new paradigm from the Arctic

(From Moore 2025) "The prevailing “consequences-based paradigm” defines the role of climate scientists as informing the public about the negative effects of climate change, assuming this will mobilize political action to reduce emissions. Under this paradigm, research into strategies other than decarbonization is often seen as counterproductive, an…

HPACAdminSeptember 13, 2025

Carbon removal cryogenics DAC cost controversy direct air capture

Near-Cryogenic Air Capture of CO2 for $68 ton

Summary - Total annual removal of 103–142 megatonnes of CO₂ based on humankind’s liquified natural gas regasification capacity by 2050. the authors state, "Our analysis estimates the net energy cost at 1.7–3.3 gigajoules per tonne of CO2—far lower than conventional DAC, which requires more than 7 GJ/tonne—along with…

HPACAdminJune 28, 2025