The Late Triassic Extinction, Persistent Photic Zone Euxinia, and Rising Sea Levels

Elevated pCO2 leading to Late Triassic extinction, persistent photic zone euxinia, and rising sea levels Caroline M.B. Jaraula, Kliti Grice, Richard J. Twitchett, Michael E. Böttcher, Pierre LeMetayer, Apratim G. Dastidar and L. Felipe Opazo doi:10.1130/G34183.1 Abstract The Late Triassic mass extinction event is the most severe global warming-related crisis to have affected important extant…

NASA: Projected U.S. Temperature Changes by 2100

NASA: The average temperature across the continental U.S. could be 8 degrees Fahrenheit warmer by the end of the 21st century under a climate scenario in which concentrations of the greenhouse gas carbon dioxide rise to 800 parts per million. Current concentrations stand at 400 parts per million, and are rising faster than at any…

Why Global Warming Should Keep You Awake at Night: Dr. Jennifer Francis Gives Chilling Testimony to Congress

Via Robertscribbler: In a July 18 testimony to Congress, Dr. Jennifer Francis, an atmospheric scientist from Rutgers and key innovator to understanding how climate change has brought about dangerous alterations to the Northern Hemisphere Jet Stream, provides five compelling reasons why we should all be quite concerned about human caused global warming. They include: 1.…

Stable Antarctic Permafrost Melting Faster than Expected

University of Texas: July 24, 2013 AUSTIN, Texas — For the first time, scientists have documented an acceleration in the melt rate of permafrost, or ground ice, in a section of Antarctica where the ice had been considered stable. The melt rates are comparable with the Arctic, where accelerated melting of permafrost has become a…

Most Comprehensive Paleoclimate Reconstruction Confirms Hockey Stick

By Stefan Rahmstorf via Scilogs The past 2000 years of climate change have now been reconstructed in more detail than ever before by the PAGES 2k project. The results reveal interesting regional differences between the different continents, but also important common trends. The global average of the new reconstruction looks like a twin of the…

Does Sea Ice loss create the condition for an emerging permanent El Nino state?

Recently Doug asked: “…my question is, how far could this phenomenon go? What is the “end” state? Is it possible for example that we could find the jet stream staying in place for months at a time, years, decades? How wavy could this waviness become?” A main theme of Sea ice loss seems to be…

Understanding the long-term carbon-cycle: weathering of rocks – a vitally important carbon-sink

By John Mason / SkepticalScience   above: the processes of the long-term carbon-cycle that this post explores. Graphic: jg. This post delves into the long-term carbon cycle that involves the interactions of the atmosphere with rocks and oceans over many millions of years. Because of its length, I’ve broken it up into bookmarked sections for…

A Looming Climate Shift: Will Ocean Heat Come Back to Haunt us?

By Rob Painting / SkepticalScience, June 24, 2013: Key Points: Despite a large increase in heat being absorbed by the Earth’s climate system(oceans, land & ice), the first decade of the 21st century saw a slowdown in the rate of global surface warming (surface air temperatures). A climate model-based study, Meehl (2011), predicted that this…

Arctic Amplification(Extreme Weather): Jennifer Francis June 6, 2013

This video is part of a Climate Desk event “Climate Desk Live 06/06/13: The Alarming Science Behind Climate Change’s Increasingly Wild Weather” featuring top climate researcher Jennifer Francis. Watch the full event (including Stu Ostro on atmospheric thickness) here . Event website http://climatedesk.org/2013/05/climat… For more detail on Francis’s research, see: Arctic Warming Favors Extreme, Prolonged Weather Events…

The Alarming Science Behind Climate Change’s Increasingly Wild Weather: Ostro And Francis On Video

By Joe Romm / Climate Progress: Earlier this month, Chris Mooney moderated a terrific Climate Desk event featuring top climate researcher Jennifer Francis along with senior Weather Channel meteorologist (and former skeptic) Stu Ostro. Climate Desk summarizes their findings: Ostro’s observations suggest that global warming is increasing the atmosphere’s thickness, leading to stronger and more persistent ridges…

Canada Calgary Aerial View + Bob Sanford speaks Floods June 22, 2013

Live stream video editing by http://ClimateState.com Aerial view footage from CTV June 22 2013, via live stream excerpts Excerpts from podcast interview with Bob Sanford and host Anna Maria Tremonti from the The Current, episode “Severe flooding in southern Alberta” from June 21, 2013 Severe flooding in southern Alberta Robert Sandford is the EPCOR Chair in…

ScienceCasts: The “Sleeping Giant” in Arctic Permafrost

Visit science.nasa.gov/ for breaking science news. Arctic permafrost soils contain more accumulated carbon than all the human fossil-fuel emissions since 1850 combined. Warming Arctic permafrost, poised to release its own gases into the atmosphere, could be the “sleeping giant” of climate change. NASA Finds ‘Amazing’ Levels Of Arctic Methane And CO2, Asks ‘Is a Sleeping Climate Giant Stirring…

May 2013 Earth’s 3rd Warmest May; Central European Floods Cost $22 Billion

By Jeff Masters / Wunderground: May 2013 was the globe’s 3rd warmest May since records began in 1880, according to NOAA’s National Climatic Data Center (NCDC). NASA rated it the 10th warmest May on record. The year-to-date period of January – May has been the 8th warmest such period on record. May 2013 global land…