Ice Sheets – Healthy Planet Action Coalition

aerosols Arctic refreezing cryosphere Engineered cooling geoengineering Ice Sheets solar radiation modification SRM stratospheric aerosols

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

cryosphere Ice Sheets presentation sea level rise

John Moore – Polar Interventions to Save the Cryosphere Must Have Local Winners, HPAC, January 8, 2026

https://www.youtube.com/watch?v=n9ztQJtxofU&t=237s

HPACAdminJanuary 8, 2026

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

atmospheric greenhouse gas concentration carbon balance carbon cycle response carbon sinks climate restoration Earth systems evaporation Ice Sheets natural feedback emissions Ocean response Precipitation response sequestration terrestrial response threshold crossing tipping

Antarctic tipping warning, mega drying – now greatest sea level rise contributor, total Earth systems sequestration flips into decline

Antarctic tipping warning, mega drying – now greatest sea level rise contributor, total Earth systems sequestration flips into decline Bruce Melton PE ClimateDiscovery.org Evidence continues to mount that Earth systems processes have passed tipping points or their tipping is foregone without rapid restoration of our climate to within…

HPACAdminAugust 24, 2025

Boreal forest carbon sinks Earth systems Ice Sheets natural feedback emissions Ocean acidification Ocean response sequestration Temperature response terrestrial response threshold crossing tipping

Sudden Jump In Published Findings on Tipping Activation

Bruce Melton PE, Climate Change Now Initiative Science is slow. It has been slower than climate change for decades and as that science has warned, if we did not act promptly and appropriately, the speed of climate change would increase further and dangerously. We now find this future…

HPACAdminJuly 3, 2025

1 degree C warming above normal climate restoration Ice Sheets tipping

Stokes and Deconto, May 20, 2025 – 1 C is the tipping limit of polar ice sheets

A 200-foot tall ice cliff at the Russell Glacier, Greenland Ice Sheet, Point 660, Kangerlussuaq, Greenland, Stokes and Decoto, May 20, 2025 – 1 C is the tipping limit of polar ice sheets… Abstract "Mass loss from ice sheets in Greenland and Antarctica has quadrupled since the 1990s…

HPACAdminMay 25, 2025