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…

Biogeochemical regulation: Anoxia in the Past and Present (September 2016)

September 2016: Professor Andrew Watson FRS, (University of Exeter, UK) speaks at Royal Society event Ocean ventilation and deoxygenation in a warming world. Abstract The major biogeochemical cycles which keep the present-day Earth habitable are linked by a network of feedbacks which has led to a broadly stable chemical composition of the oceans and atmosphere…

Everything you need to know about Mass Extinction, Sea Level Rise and Amplification

Professor Peter Ward (Professor, Sprigg Institute of Geobiology, The University of Adelaide) explains the interconnections of rising carbon dioxide levels and flood basalt, and how it leads to anoxic oceans (with Hydrogen sulfide). Ward explains how today’s CO2 levels will result in sea level rise with disrupting implications for crops and how deglaciation will ultimately…

Ocean Acidification Summary for Policymakers 2013

Published by IGBP November 14, 2013 This summary for policymakers reports on the state of scientific knowledge on ocean acidification, based on the latest research presented at The Third Symposium on the Ocean in a High-CO2 World, held in Monterey, California, in September 2012. Experts present the projected changes from ocean acidification for ecosystems and the people who rely on…

State of the Ocean: Ocean Acidification and Previous Marine Extinctions

The 2013 report on the State of the Ocean, by IPSO can be accessed here (PDF). From the report: Executive Summary • Climate change and the ocean – What does the future hold? The ocean isshielding us from the worst effects of accelerating climate change by absorbing excess CO2 and heat from the atmosphere. The twin effects…

Anoxia and Euxinia Ocean Environmental Change

Reconstructing the history of euxinia in a coastal sea Caroline P. Slomp, 2013 DOI 10.1130/focus0420131.1 Web http://geology.gsapubs.org/content/41/4/523.full Areas of the coastal ocean where oxygen is low or absent in bottom waters, so-called dead zones, are expanding worldwide (Diaz and Rosenberg, 2008). Increased inputs of nutrients from land are enhancing algal blooms, and the sinking of this…

Our Future In a World Without Ice Caps – Peter Ward

Brown Bag Lecture Series; Center for Student Engagement & Leadership; and Arts, Culture, and Civic Engagement Apr. 11, 2013: In honor of Earth Month: Peter D. Ward, Ph.D., is a paleontologist and professor of Geological Sciences at the University of Washington. Ward specializes in the Cretaceous-Tertiary extinction event (the one that killed the dinosaurs), the…

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

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…