Natural Gas versus Coal Power Plants: Greenhouse gas warming

Ken Caldeira: We had a paper come out comparing effects of natural gas versus coal plants, aimed at understanding how much methane leakage there could be from natural gas before it caused more near-term warming than coal. The answer depends on how efficient the different power plants are, but one thing that is clear is…

Novel climate proxy reveals CO2 content of Earth’s atmosphere, of the past 400 million years

The study New constraints on atmospheric CO2 concentration for the Phanerozoic (DOI: 10.1002/2014GL060457), by Peter J. Franks, Dana L. Royer, David J. Beerling , Peter K. Van de Water, David J. Cantrill, Margaret M. Barbour, and Joseph A. Berry, estimates CO2 in Earth history based on a new climate proxy. Estimates are in particular based…

Time history of atmospheric carbon dioxide (2013 data)

Video credit: Andy Jacobson, CIRES/NOAA In 2013, Greenhouse gases continued to rise, 34 percent increase since 1990 NOAA reported in May 2014, about greenhouse gas observations, based on the Annual Greenhouse Gas Index (AGGI). Findings show that greenhouse gasses keep rising, a trend observed since the Industrial Revolution (1880s) and has accelerated in recent decades. The main contributor…

With further Arctic Amplification, How fast will Greenhouse Gas emissions accelerate in the Arctic Circle?

Introduction to Methane Hydrate “Methane Hydrates and Contemporary Climate Change” (2011) IDENTIFICATION This post “A Mechanism for Shallow Methane Hydrate Dissociation”, explores possible mechanism which could release vast quantities of shallow Methane Hydrate into the ocean and atmosphere.       CH4 Release The following studies explore the release of CH4 emissions in the Arctic region. OBSERVATION…

No One Is Immune: IPCC Study Offers Bleak Climate Change Outlook

A new massive report on global warming says dangers will worsen as the climate changes. Related IPCC Climate Change Report The Five Key Points IPCC Report: Climate Change 2013: The Physical Science Basis IPCC Report: Climate Change 2014: Impacts, Adaptation, and Vulnerability New York Times: Climate Study Puts Diplomatic Pressure on Obama

Worst Weather Ever: Record Breaking Heat Waves Explained

National Geographic: Experts compare modern heat waves to the past and show what’s really going on with Carbon Dioxide. Related Some 15% of Pacific islands wiped out by 1m sea level rise – IPCC Carbon dioxide benchmark hits new heights, worries scientists Citigroup says the ‘Age of Renewables’ has begun

Global Warming Speeds Up Methane Emissions from Freshwater

By Tim Radford (Climate News Network): Scientists think the amount of methane emitted to the atmosphere from freshwater ecosystems will increase as the climate warms, triggering further warming. LONDON, 20 March – British scientists have identified yet another twist to the threat of global warming. Any further rises in temperature are likely to accelerate the release of methane from…

2013 Is the Fourth Hottest Year on Record

By Phil Plait (Slate):  It’s official: 2013 is the fourth hottest year since records started being kept in 1880. It ties with 2003 for that dubious honor. This result was just announced by the National Oceanic and Atmospheric Administration. It uses global annual land and sea surface temperatures to make the call, and in 2013 these two measures combined…

BP study: Greenhouse emissions will rise by almost a third in the next 20 years

Fiona Harvey and Terry Macalister from The Guardian, report: Energy firm’s analysis finds switch to other fuels like shale gas will do little to cut carbon emissions In the UK, shale gas has received a boost from David Cameron, who vowed to go all out for shale by offering taxpayer-funded giveaways to companies. But the news that such a move will…

UK and Poland announce plans to push fracking across Europe

David Cameron tells Polish Prime Minister that he will cooperate to prevent EU legislation that could slow down fracking industry By Sophie Yeo | Release URL  The UK and Poland have pledged to work together against any EU regulation that could threaten the shale gas industry. Speaking to Polish Prime Minister Donald Tusk on the phone, David…

NRC: Abrupt Impacts of Climate Change (2013)

Published 3rd December 2013: National Research Council Abrupt Impacts of Climate Change: Anticipating Surprises | Release URL Both abrupt changes in the physical climate system and steady changes in climate that can trigger abrupt changes in other physical, biological, and human systems present possible threats to nature and society. Abrupt change is already underway in some…

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

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,…

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…

200 years of Global Change 1900-2100 Climate Science History & Projections of IPCC-AR5 2013

Hans Rosling lecture 19 mins – 28 September 2013 200 years of Global Change, Climate Science, History Projections & the IPCC AR5 Report explained Professor Hans Rosling, Karolinska Institutet of Sweden. Edutainer at www.Gapminder.org their mission: “To fight devastating ignorance with a fact-based worldview everyone can understand.” The first public forum for the launch of…