Tag

abrupt climate change

New Evaluation of Climate Models Reveals Abrupt Changes Ahead of Schedule

By | Abrupt changes, Drought, Extreme Weather, forest health, Forest Mortality, Greenland, Gulf Stream, ice sheets, Impacts, modeling, The Unexpected

  New Evaluation of Climate Models Reveals Abrupt Changes Ahead of Schedule It’s not the averages that will mess up your hair, it’s the gusts. This work on modeling the unmodelable (Drijfhout 2015) is a couple of years old now, but it gives enormous insight into…

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Sing Delay, Delay, Delay: 0.5 C Limit to Dangerous Climate Change

By | Abrupt changes, Arctic, Climate Policy, Climate Reform, climate restoration, CO2, Emissions, Greenland, Gulf Stream, ice sheet, Impacts, Legacy Policy, Methane, modeling, Policy, sea ice, Strategy, West Antarctic Ice Sheet

Sing Delay, Delay, Delay When serious discussions about global warming gases and fossil fuels began in the 1980s, all that was needed to prevent what would become labeled as dangerous climate change was a reduction of the emissions of global warming gases. Since that time,…

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NOAA — Ice Sheet Collapse in Our Time: Zero Warming Climate Solution

By | Abrupt changes, adaptation, Antarctica, Arctic, Climate Policy, CO2, CO2 Removal and Sequestration, Emissions, Emissions Scenarios, Greenland, ice sheets, in-depth and Popular Press, modeling, Negative emissions, Sea Level Rise, Solutions, West Antarctic Ice Sheet

We have delayed too long and now must urgently reduce the load of warming gases already emitted to our sky. We have been warned this would happen for decades, we just didn’t think it would happen so soon. This is exceedingly bad news, though the…

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Optimal Path for Avoiding Dangerous Change and Short-lived Greenhouse Gases

By | Abrupt changes, Methane, Uncategorized

Methane (and natural gas), and black carbon (soot) are short-lived greenhouse gases relative to carbon dioxide, N20 (nitrous oxide) and CFC (chlorofluorocarbons). Limiting these short-lived greenhouse gases have obvious benefits in reducing warming. Focusing emissions reductions on these gasses also gives the benefit of delaying…

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US Geological Survey Report – U.S. Climate Change Science Program. Thresholds of Climate Change in Ecosystems

By | Abrupt changes, Impacts, Shifting Ecology

(170 pages) Ecological thresholds occur when external factors, positive feedbacks, or nonlinear instabilities in a system cause changes to propagate in a domino-like fashion that is potentially irreversible.  Atmospheric carbon dioxide has reached levels unprecedented in possibly the last 24 million years. CO2 concentrations have…

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