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First Simulations of Designing Stratospheric Sulfate Aerosol Geoengineering to Meet Multiple Simultaneous Climate Objectives 30 degrees north and southEngineered coolingEngineered cooling scenariosLearn by doingstratospheric aerosols

First Simulations of Designing Stratospheric Sulfate Aerosol Geoengineering to Meet Multiple Simultaneous Climate Objectives

Summary... First simulations of stratospheric sulfate injection at 30 degrees N and S, RCP8.5, +/-5 degree C warming, 51 million tons SO2 annually… Of note: scenarios overcool in summer and undercool in winter. Kravits, McMartin et al., First Simulations of Designing Stratospheric Sulfate Aerosol Geoengineering to Meet Multiple…
HPACAdmin
June 10, 2025
How large is the design space for stratospheric aerosol geoengineering Engineered coolingEngineered cooling scenariosstratospheric aerosols

How large is the design space for stratospheric aerosol geoengineering

First published in Earth Systems Dynamics, January 25, 2022. Summary... Managing multiple climate goals simultaneously with stratospheric aerosol cooling. Small cooling is easier than large cooling with more choices of strategies available. Zhang and MacMartin et al., How large is the design space for stratospheric aerosol geoengineering, Earth…
HPACAdmin
June 10, 2025
Using Optimization Tools to Explore Stratospheric Aerosol Injection Strategies Precipitation responseTemperature response

Using Optimization Tools to Explore Stratospheric Aerosol Injection Strategies

First published at EGUsphere Preprints on January 16, 2025 Summary - Stratospheric aerosol injection at 7 latitudes, optimized to explore limitations and trade-offs for combining different latitude and seasonal injections scenarios, assuming linearity of responses… Brody et al., Using Optimization Tools to Explore Stratospheric Aerosol Injection Strategies, EGUsphere Preprint,…
HPACAdmin
June 10, 2025
Five geoengineering trials the UK is funding to combat global warming Arctic refreezingEngineered coolingMarine cloud brighteningstratospheric aerosolsUncategorized

Five geoengineering trials the UK is funding to combat global warming

UK Government is funding five, small scale geoengineering field experiments: three on marine cloud brightening, and one each on Arctic refreezing, and stratospheric aerosols totalling $78 million U.S. The article advocates for the common understanding of the nature of geoengineering in academic and public thought, "Deliberately altering the…
HPACAdmin
June 10, 2025
Page Header Schedule admin

Page Header Schedule

Page Header Schedule Tipping   Lake Buchanan, Highland Lakes, Central Texas, Drought of record, 2013. Texas recorded its worst drought ever in 2011-2013, which was more extreme than both the Dust Bowl and the Drought of the 50s (which usurped the Dust Bowl in Texas). Since, the highland…
HPACAdmin
June 5, 2025
Stokes and Deconto, May 20, 2025 – 1 C is the tipping limit of polar ice sheets 1 degree C warming above normalclimate restorationIce Sheetstipping

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…
HPACAdmin
May 25, 2025
Munday, May 12, 2025 – Amazon and boreal forest tipping: 1.5 C is too warm… AmazonBoreal forestCarbon removalnegative emissionstipping

Munday, May 12, 2025 – Amazon and boreal forest tipping: 1.5 C is too warm…

Summary: The only way to stop collapse of the Amazon according to this studies modeling, is to reduce the temperature from today to below 1.5 C. Then and only then will tree mortality stabilize. Temporarily overshooting 1.5 C see forest loss continue for centuries because of degradation feedbacks.…
HPACAdmin
May 15, 2025
2.5ºC–3ºC Is Not Viable: Dr. Mike MacCracken’s Case for Solar Radiation Management HPAC Videos

2.5ºC–3ºC Is Not Viable: Dr. Mike MacCracken’s Case for Solar Radiation Management

2.5ºC–3ºC Is Not Viable: Dr. Mike MacCracken's Case for Solar Radiation Management May 15, 2025 ClimateGenn #podcast produced by Nick Breeze In this ClinateGenn episode I am speaking with Dr Mike MacCracken, a pioneering climate scientist whose research on atmospheric physics and global climate change has significantly advanced…
HPACAdmin
May 15, 2025