Dangerous Climate Change’’: Required Reduction of Carbon Emissions to Protect Young People, Future Generations and Nature

2013, Atmosphere, Carbon Tax, Climate Feedbacks, Climate Sensitivity, CO2 Emissions, CO2 Sequestration, Coal, Economy, Education, Emissions Reduction, Energy, Extreme Weather, Global, Greenhouse Gases, Natural Gas, Oil, Policy, Region, Study1 Comment

James Hansen, Pushker Kharecha, Makiko Sato, Valerie Masson-Delmotte, Frank Ackerman, David J. Beerling, Paul J. Hearty, Ove Hoegh-Guldberg, Shi-Ling Hsu, Camille Parmesan, Johan Rockstrom, Eelco J. Rohling, Jeffrey Sachs, Pete Smith, Konrad Steffen, Lise Van Susteren, Karina von Schuckmann, James C. ZachosPublished: December 03, 2013 | DOI: 10.1371/journal.pone.0081648 | PDF Release URL Abstract We assess climate impacts of global warming using ongoing observations and paleoclimate data. We use Earth’s measured energy imbalance,…

Planet likely to warm by 4C by 2100, scientists warn

Climate Sensitivity, Ecocide, Economy, Emissions Reduction, Policy, Study4 Comments

Peter Sinclair: Sherwood’s paper shoots more holes into lingering hopes that climate sensitivity, the amount of warming we expect for a given rise in CO2, might be lower than we thought – that maybe temp rises could be more moderate in the future. One of the last, lingering, tattered bastions of climate denial has been that, somehow,…

Earth Energy Imbalance

2012, Atmosphere, Chemistry, Climate Engineering, Climate Feedbacks, Climate Sensitivity, Climate System, Climate Wiki, Education, Greenhouse Gases, History, Holocene, Lecture, Paleoclimatology, Sea Level Rise, Sea Temperature7 Comments

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

2013, Anthropocene, Atmosphere, Climate Feedbacks, Climate Sensitivity, Climate System, Climate Wiki, Greenhouse Gases, Model, Paleoclimatology, Study7 Comments

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…

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

2013, Atmosphere, Chemistry, Climate Feedbacks, Climate Sensitivity, Global, Ozone Layer, Region, Science Talk, Year1 Comment

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…

Estimating northern polar CH4 flux

2012, 2013, Abrupt Climate Change, Anoxic Event, Arctic, Arctic Amplification, Arctic Circle, Atmosphere, Chemistry, Climate Feedbacks, Climate Sensitivity, CO2 Emissions, Cryosphere, Deglaciation, Erosion, Freshwater, Geodynamics, Geomorphology, Geosphere, Greenhouse Effect, Greenhouse Gases, Hydrosphere, Methane (CH4), Methane Hydrate, Model, Nitrogen, Ocean Currents, Ocean Heat Content, Ocean Stratification, Ocean Temperature, Oceanography, Ozone Layer, Pedology, Permafrost, Polar Amplification, Region, Respiration, Science Talk, Sea Ice, Sea Surface Temperature, Seismicity, Soil, Study, YearLeave a comment

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…