NASA: IPCC Projections of Temperature and Precipitation in the 21st Century

Published on YouTube Sep 27, 2013: New data visualizations from the NASA Center for Climate Simulation and NASA’s Scientific Visualization Studio show how climate models — those used in the new report from the United Nations’ Intergovernmental Panel on Climate Change (IPCC) — estimate how temperature and precipitation patterns could change throughout the 21st century.…

Earth Energy Imbalance

James Hansen explains Earth energy imbalance from anthropogenic forcing and the urgency to act, because of the climate inertia. Earth’s Energy Imbalance By James Hansen, Makiko Sato, Pushker Kharecha and Karina von Schuckmann — January 2012   Deployment of an international array of Argo floats, measuring ocean heat content to a depth of 2000 m,…

Climate Sensitivity in the Anthropocene

Video: Dr. Kevin Trenberth explains general climate sensitivity on Earth. Study: Climate sensitivity in the Anthropocene M. Previdi, B. G. Liepert, D. Peteet, J. Hansen, D. J. Beerling, A. J. Broccoli, S. Frolking, J. N. Galloway, M. Heimann, C. Le Quere, S. Levitus and V. Ramaswamy | Source Climate sensitivity in its most basic form is…

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

Global warming could change strength of El Nino

Via Phys.org September 11, 2013: Global warming could impact the El Niño Southern Oscillation (ENSO), altering the cycles of El Niño and La Niña events that bring extreme drought and flooding to Australia and many other Pacific-rim countries. New research published in Nature Geoscience using coral samples from Kiribati has revealed how the ENSO cycle has changed…

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…

Arctic methane outgassing on the East Siberian Shelf

SkepticalScience.com by John Mason on January 19 2012: In December 2011, following a fresh flurry of sometimes conflicting media reports about methane outgassing on the East Siberia Arctic Shelf (ESAS), we decided to go and talk to the people doing the work on the ground. We are pleased to report that Dr Natalia Shakhova (NS…

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…

NASA Operation IceBridge: From the Cockpit | Arctic Sea Ice + Commentary (2013)

Published on YouTube Aug 23, 2013: You’ve seen the great cockpit footage from Best of IceBridge Arctic ’13, now go behind the scenes for 9 minutes of scientific commentary with Operation IceBridge Project Scientist Michael Studinger and NASA sea ice researcher Nathan Kurtz, as they discuss the science behind the mission’s study of Arctic sea…