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A Conversation with Rafe Pomerance  presentation

A Conversation with Rafe Pomerance 

https://www.youtube.com/watch?v=H2olKCxWZ7c&pp=0gcJCcMJAYcqIYzv Recording: A Conversation with Rafe Pomerance December 16, 2021 References: Sustaining the Arctic in Order to Sustain the Global Climate System, Bodansky & Pomerance, September 2021 The Arctic is Warming Four Times Faster than the Rest of the World, Paul Voshen; Science, December 14, 2021 US Arctic Report Card Is Incomplete,…
HPACAdmin
June 29, 2025
Near-Cryogenic Air Capture of CO2 for $68 ton Carbon removalcryogenicsDAC cost controversydirect 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…
HPACAdmin
June 28, 2025
David Spratt Accelerated Climate Change and the Case for Cooling, June 26, 2025 presentation

David Spratt Accelerated Climate Change and the Case for Cooling, June 26, 2025

https://www.youtube.com/watch?v=PH4d6zr2CTI David Spratt is Research Director for the Breakthrough National Centre for Climate Restoration in Melbourne Australia. He is co-author of Climate Code Red: The case for emergency action which almost 20 years ago proposed emergency-scale mobilization as a necessary response to climate disruption. His work has focused…
HPACAdmin
June 26, 2025
Herb Simmens at London Climate Week: “The Climate Triad: Restoring a Safe and Healthy Climate,” June 25, 2025 HPAC endorsed articles and videos

Herb Simmens at London Climate Week: “The Climate Triad: Restoring a Safe and Healthy Climate,” June 25, 2025

Herb Simmens at London climate Week presents,"The Climate Triad: Restoring a Safe and Healthy Climate" in this powerful talk recorded at the Foundling Museum, London, on Monday, June 23, 2025, during London Climate Action Week 2025. As co-leader of Montgomery County’s historic 2017 climate emergency declaration—the first in…
HPACAdmin
June 25, 2025
The Hill, June 19, 2025 – Earth is absorbing too much sunlight: It’s a waking climate giant, by Robert Tulip HPAC Popular Press, Journal Articles, Conference Proceedings

The Hill, June 19, 2025 – Earth is absorbing too much sunlight: It’s a waking climate giant, by Robert Tulip

Albedo is the reflection of sunlight back into space, mainly from bright surfaces such as clouds, snow, ice and atmospheric particles, providing an essential planetary cooling shield. However, a 2021 NASA study found that the excess of incoming sunlight over outgoing radiation, known as Earth’s energy imbalance, has doubled since 2005.…
HPACAdmin
June 19, 2025
Explainer: How human-caused aerosols are ‘masking’ global warming (Carbon Brief) aerosolscloudsglobal cooling pollutantship's fuels regulationstropospheric 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…
HPACAdmin
June 13, 2025
Jeffrey Nielsen – SAI as a Security Dilemma Between the United States and China, June 12, 2025 presentation

Jeffrey Nielsen – SAI as a Security Dilemma Between the United States and China, June 12, 2025

https://www.youtube.com/watch?v=V4rLmOPrfDY&t=2436s Major Jeffrey Nielsen is a trained national security strategist with military experience in North America, Europe, West Asia, and East Asia. He researched international climate change security at the US Army's Command and General Staff College before publishing in Oxford Open Climate Change. He will be presenting…
HPACAdmin
June 12, 2025
Ocean Acidification – Another Planetary Boundary Crossed, June 9, 2025 coralOcean acidificationOcean responsethreshold crossingtipping

Ocean Acidification – Another Planetary Boundary Crossed, June 9, 2025

Coral bleaching, Great Barrier Reef Marine Park Authority, Australian Government Once a system’s degradation begins, in general it does not stop unless the thing that caused it to begin is removed. In this case, warming has caused the crossing of the ocean acidification threshold. There are situations where…
HPACAdmin
June 12, 2025