Retrospective look at the Hockey Stick controversy

Especially on topic starting at 34:30 min in. Le professeur Bradley est l’invité du comité de vie scientifique de l’Association étudiante du Centre Eau Terre Environnement (AECETE). Professeur éminent au Département de géosciences et directeur du Climate System Research Center de l’Université du Massachussetts à Amherst (États-Unis), le professeur Bradley étudie les changements climatiques depuis…

Richard Alley: The Biggest Control Knob: Carbon Dioxide in Earth’s Climate History

In 2009, climate scientist Richard Alley (Pennsylvania State University) held the talk, “The Biggest Control Knob: Carbon Dioxide in Earth’s Climate History” (Bjerknes Lecture), at the American Geophysical Union Fall Meeting. CO2 is, and has always been, the biggest climate control knob in the Earth’s history https://mind.ofdan.ca/co2-is-and-has-always-been-the-biggest-climate-control-knob-in-the-earths-history 2015 release by AGU https://youtu.be/3UVb–2-PBg

Waleed Abdalati (NASA): Dramatic Changes in Polar Ice

Video: Welcome to the NASA Earth Exchange (NEX) Virtual Workshop live stream channel. Stay tuned to listen to featured keynote speakers covering research themes from climate modeling to remote sensing applications and high performance computing in Earth Sciences – Watch them live or browse through lectures from the video library. Please visit the NEX Virtual…

Humid air and the Jet Stream help to fuel more intense thunderstorms/tornadoes

“The fuel for the more intense storms would be the predicted warming of the Earth caused by the burning of fossil fuels that release greenhouse gases.” A combination of a slower Jet Stream (see video for explanation and study) and a more humid atmosphere increase the likelihood for a more intense thunderstorm environment. This conclusion…

Kevin Anderson on the Climate Crisis – Why 2.0C target?

Cabot Institute Annual Lecture 2012 Real clothes for the Emperor: Facing the challenges of climate change Kevin Anderson, Professor of Energy and Climate Change, University of Manchester Cabot Institute, University of Bristol http://www.bris.ac.uk/cabot   Real clothes for the emperor Facing the challenges of climate change Download the presentation slide sheets here.

3.5 mil years ago, summer temps were ~8°C warmer than today, CO2 was ~400 ppm

Two recent studies on past temperatures… Pliocene Warmth, Polar Amplification, and Stepped Pleistocene Cooling Recorded in NE Arctic Russia Understanding the evolution of Arctic polar climate from the protracted warmth of the middle Pliocene into the earliest glacial cycles in the Northern Hemisphere has been hindered by the lack of continuous, highly resolved Arctic time…

Arctic Ocean ‘acidifying rapidly’

BBC: The Arctic seas are being made rapidly more acidic by carbon-dioxide emissions, according to a new report. Scientists from the Arctic Monitoring and Assessment Programme (AMAP) monitored widespread changes in ocean chemistry in the region. They say even if CO2 emissions stopped now, it would take tens of thousands of years for Arctic Ocean chemistry to…

Atmospheric Oxygen

Dr. Ralph Keeling on atmospheric Oxygen and Carbon Dioxide. Ralph Keeling is the current program director of the Scripps CO2 Program. He is also a Professor and the Principal Investigator for the Atmospheric Oxygen Research Group at SIO.   Atmospheric Oxygen Levels are Decreasing Oxygen levels are decreasing globally due to fossil-fuel burning. The changes are too…

Jennifer Francis: Wacky Weather and disappearing Arctic Sea Ice are they connected?

Dr. Jennifer Francis – Rutgers University “Extreme weather events are increasing in frequency and intensity all around the northern hemisphere.” Concurrently, Arctic sea ice is in an accelerating decline, the entire surface of Greenland melted for the first time in at least 150 years, glaciers are disappearing around the world, and snow cover on Arctic…