Audio: Overshooting 2C risks rapid and unstoppable sea level rise from Antarctica

CarbonBrief recently published a guest article by Robert M. DeConto, Pamela Pearson, and David Pollard, called Overshooting 2C risks rapid and unstoppable sea level rise from Antarctica. Here is now a text-to-speech conversation for people who like to listen to it. Visit Overshooting 2C risks rapid and unstoppable sea level rise from Antarctica to follow…

Antarctic & Greenland Melt Accelerates Sea Level Rise (Eric Rignot October 2019)

In this talk from October 2019, Eric Rignot suggests the possibility of 4 meters of sea level rise per century. Just extrapolating based on Antarctic marine glaciers retreating would yield the figure Notes a new model with results in the ballpark Notes the figure is in agreement with past sea level rise estimates Not mentioned…

Arctic Ocean Anomalies

‘Atlantification’ of Arctic sea tipping it towards new climate regime https://www.carbonbrief.org/atlantification-arctic-sea-tipping-towards-new-climate-regime Scientists are keeping a close eye on the Beaufort Gyre https://www.pri.org/stories/2018-01-06/scientists-are-keeping-close-eye-beaufort-gyre In a Spin: New Insights into the Beaufort Gyre https://eos.org/editors-vox/in-a-spin-new-insights-into-the-beaufort-gyre SUPPLEMENTAL North Atlantic Ocean Sea Surface Salinity Anomaly Maps North Atlantic Ocean Sea Surface Height Anomaly Maps North Atlantic Ocean Sea Surface Temperature…

Extinction Events in Earth History and Today

Flood Basalts and Mass Extinctions – refine ancient hyperthermals as analogs for anthropogenic climate change.  Oceanic Anoxic Event (OAE) and mass extinctions are considered to be hyperthermals – usually associated with flood basalt eruptions.[2] Phases of rapid global warming, known collectively as hyperthermals.[1]  Flood basalts are a subset of large igneous provinces (LIPs), the terms flood basalt…

New Mechanism for Methane Hydrate Dissociation Discovered

Methane hydrates are ice like structures forming a solid similar to ice. Significant amounts have been located under sediments on the ocean floors of the Earth. Generally, methane hydrates are more stable in fresh water than in salt water. A region allowing the formation for methane hydrates (largely dependent on depth and pressure) is called…

Climate tipping-point potential and paradoxical production of methane in a changing ocean

Authors: Hongyue Dang, Jia Li Dang, H. & Li, J. Sci. China Earth Sci. (2018) 61: 1714. https://doi.org/10.1007/s11430-017-9265-y Access and read the PDF with inline linkages, and reference list here. Abstract The global warming potential of methane (CH4) is about 30 times stronger than that of carbon dioxide (CO2) over a century timescale. Methane emission is hypothesized…

Multi Meter Sea Level Rise, Antarctic Sea Ice & Ice Melt Acceleration

A pair of new studies released on Monday share a same ominous message — that our planet’s ice is melting at an alarming rate, which is bad news for global sea levels. https://edition.cnn.com/2019/01/14/world/climate-change-antarctica-ice-melt-twin-studies/index.html Narration by Cormac Bren Antarctic ice-sheet sensitivity to obliquity forcing enhanced through ocean connections https://www.nature.com/articles/s41561-018-0284-4 Four decades of Antarctic Ice Sheet mass…

Eric Rignot: Response of the Great Ice Sheets to Climate Warming

In ca 2012, as part of the Discover the Physical Sciences Breakfast Lecture Series at the University of California, climate researcher Eric Rignot (NASA/JPL) outlined our understanding of changes in the major cryosphere hotspots in Antarctica and Greenland, in his talk titled “Response of the Great Ice Sheets to Climate Warming”. Read about his newest…