Ocean Acidification in Earth’s Past: Insights to the Future – James Zachos

Presented by James Zachos, Ph.D., University of California at Santa Cruz, at the 2013 Metcalf Institute Annual Public Lecture Series, June 13, 2013. Related Long-term legacy of massive carbon input to the Earthsystem: Anthropocene versus Eocene

Bio-energy with carbon capture and storage

Bio-energy with carbon capture and storage (BECCS) is a greenhouse gas mitigation technology which produces negative carbon dioxide emissions by combining biomass use with geologic carbon capture and storage. The concept of BECCS is drawn from the integration of trees and crops, which extract carbon dioxide (CO2) from the atmosphere as they grow, the use…

Can scientists overcome huge uncertainties to pin down how close, or far, we might be to a tipping point?

A 2007 Royal Society paper by NASA scientist Drew Shindell: “… the rarity of palaeoclimate evidence for hydrate-induced climate changes argues that this is a fairly unlikely candidate for near-term sudden climate change. Unlike the others, however, anthropogenic climate change may alter the probability of hydrate release when compared with the past, making the overall…

Methane hydrate destabilization a potential scenario

Excerpts from an episode of History Channel’s “Mega Disasters” series. This explores the paper published by Northwestern University’s Gregory Ryskin. His thesis: the oceans can produce massive eruptions of explosive methane gas. Methane distribution in the water column: Once released into the water column, methane is distributed by currents and aerobic methane oxidation by bacteria…

Estimating northern polar CH4 flux

A compilation of related science with some commentary. Microbes in thawing permafrost: the unknown variable in the climate change equation David E Graham, Matthew D Wallenstein, Tatiana A Vishnivetskaya, Mark P Waldrop,Tommy J Phelps, Susan M Pfiffner, Tullis C Onstott, Lyle G Whyte, Elizaveta M Rivkina,David A Gilichinsky, Dwayne A Elias, Rachel Mackelprang, Nathan C…

Wild Weather of the Future (1776 Edition)

By Chris Mooney| Tue Aug. 27, 2013: In this talk, meteorologist and America’s “Science Idol” contest winner Tom DiLiberto gives a forecast of the weather of the future—the weather that will be produced by climate change. While some of the details remain scientifically cloudy—according to DiLiberto, we don’t yet understand what will happen to tornadoes…

Methane release from the East Siberian Arctic Shelf and the Potential for Abrupt Climate Change

Natalia Shakhova, Igor Semiletov | Source University of Alaska, Fairbanks, International Arctic Research Centre, USA Russian Academy of Sciences, Far Eastern Branch, Pacific Oceanological Institute, Vladivostok, Russia “Opening the Arctic”, Washington, Nov.30th-Dec.2nd, 2010. Outline What do we know about methane potential of the ESAS? Is there a mechanism responsible for transformation of methane potential to…

How the Greenhouse Effect Works

The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere, it results in an elevation of the average surface temperature above what it would be…