Daily Archives: January 21, 2013

BBC News – CO2 ‘drove end to last ice age’

http://www.bbc.co.uk/news/science-environment-17611404
4 April 2012 Last updated at 13:16 ET

By Jonathan Amos Science correspondent, BBC News

Ice core records from Antarctica had suggested the CO2 increase lagged behind temperature rise
Continue reading the main story

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A new, detailed record of past climate change provides compelling evidence that the last ice age was ended by a rise in temperature driven by an increase in atmospheric carbon dioxide.

The finding is based on a very broad range of data, including even the shells of ancient tiny ocean animals.

A paper describing the research appears in this week’s edition of Nature.

The team behind the study says its work further strengthens ideas about global warming.

“At the end of the last ice age, CO2 rose from about 180 parts per million (ppm) in the atmosphere to about 260; and today we’re at 392,” explained lead author Dr Jeremy Shakun.

“So, in the last 100 years we’ve gone up about 100 ppm – about the same as at the end of the last ice age, which I think puts it into perspective because it’s not a small amount. Rising CO2 at the end of the ice age had a huge effect on global climate.”    …(more).

Global Climate Change http://courses.dce.harvard.edu/~envre130
Environment Ethics http://courses.dce.harvard.edu/~envre120

BBC News – Carbon emissions are ‘too high’ to curb climate change

http://www.bbc.co.uk/news/science-environment-20556703
2 December 2012 Last updated at 13:00 ET
By Mark Kinver
Environment reporter, BBC News

The concentration of CO2 is continuing to rise, despite global efforts to curb future increases
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It is increasingly unlikely that global warming will be kept below an increase of 2C (3.6F) above pre-industrial levels, a study suggests.

Data show that global CO2 emissions in 2012 hit 35.6bn tonnes, a 2.6% increase from 2011 and 58% above 1990 levels.

The researchers say that emissions are the largest contributor to future climate change and a strong indicator of potential future warming.

The findings have been published in the journal Nature Climate Change.

Meanwhile, the data has been published in the journal Earth System Science Data Discussions.

Many low-lying nations have used the UN conference, which is currently under way in Doha, to call for a threshold temperature rise less than 2C, arguing that even a 2C rise will jeopardise their future.

“These latest figures come amidst climate talks in Doha, but with emissions continuing to grow, it’s as if no-one is listening to the scientific community,” said Corinne Le Quere, director of the Tyndall Centre for Climate Change Research at the University of East Anglia.

“I am worried that the risks of dangerous climate change are too high on our current emissions trajectory,” Prof Le Quere said.

“We need a radical plan.” ….(more).

Global Climate Change http://courses.dce.harvard.edu/~envre130
Environmental Justice http://courses.dce.harvard.edu/~envre145
Environment Ethics http://courses.dce.harvard.edu/~envre120

BBC News – 2012 was in top 10 warmest on record

http://www.bbc.co.uk/news/science-environment-21033083
15 January 2013 Last updated at 16:56 ET

By Matt McGrath Environment correspondent, BBC News

Despite a record hot year in the US, the rest of the world did not follow
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US scientists say that 2012 was among the 10 warmest years the world has experienced since 1880.

Nasa researchers said it was the ninth warmest year while experts from another American agency said it was the 10th.

Both teams said that temperatures would have been higher if it had not been for the La Nina weather pattern that brought cooling to some regions.

They were equally certain carbon dioxide had been the principal driver of the rise over the past 50 years.

The National Oceanic and Atmospheric Administration (Noaa) said that their analysis of temperature data from a global network of weather stations indicated that the average temperature for 2012 was 0.57C above the 20th Century average.

The agency stated that all 12 years of the 21st Century rank among the 14 warmest in the 133-year period of record keeping.

“This past year, unlike the US they were not a record globally but they certainly were warm,” said Thomas Karl, director of Noaa’s National Climatic Data Centre. (more).

Global Climate Change http://courses.dce.harvard.edu/~envre130
Environment Ethics http://courses.dce.harvard.edu/~envre120

BBC News – A decision on the XL pipeline could define Obama’s green agenda

http://www.bbc.co.uk/news/science-environment-21119892
21 January 2013 Last updated at 12:25 ET


Article written by Matt McGrath Environment correspondent

Protestors against the XL pipeline have taken their argument to the White House

More from Matt

Even before he was sworn in for a second term President Obama’s in-tray has been bulging with letters about climate and energy issues.

The big, looming problem that encompasses both areas is the Keystone XL pipeline.

This $7bn, 1,700 mile trans-national project is meant to bring oil from the tar sands of Alberta to the refineries of Texas. Backed by industry but opposed by environmentalists it has become hugely divisive, with protestors taking to the streets outside the White House.

A year ago, President Obama kicked the issue into the long grass. Writing at the time, my former colleague Richard Black analysed the background to the decision.

But the long grass has now wilted and the President will shortly have to give a final yea or nay.

In a recent letter to the President, 18 well known climate scientists urged him to reject the pipeline on the grounds that it increases US reliance on fossil fuels. …(more).

Global Climate Change http://courses.dce.harvard.edu/~envre130
Environmental Justice http://courses.dce.harvard.edu/~envre145
Environment Ethics http://courses.dce.harvard.edu/~envre120

BBC News – Gamma-ray burst ‘hit Earth in 8th Century’

http://www.bbc.co.uk/news/science-environment-21082617
21 January 2013 Last updated at 01:00 ETBy Rebecca Morelle Science reporter, BBC World Service

Gamma-ray bursts can occur when two neutron stars merge
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A gamma ray burst, the most powerful explosion known in the Universe, may have hit the Earth in the 8th Century.

In 2012 researchers found evidence that our planet had been struck by a blast of radiation during the Middle Ages, but there was debate over what kind of cosmic event could have caused this.

Now a study suggests it was the result of two black holes or neutron stars merging in our galaxy.

This collision would have hurled out vast amounts of energy.

The research is published in the journal Monthly Notices of the Royal Astronomical Society.

Environment Ethics http://courses.dce.harvard.edu/~envre120

Obama Pledges to Deal With Climate Change


AssociatedPress

Published on Jan 21, 2013

President Barack Obama is pledging to respond to what he calls “the threat of climate change.” He says that failing to do so would be a betrayal of the nation’s children, and of future generations. (Jan. 21)

Global Climate Change http://courses.dce.harvard.edu/~envre130
Environmental Justice http://courses.dce.harvard.edu/~envre145
Environment Ethics http://courses.dce.harvard.edu/~envre120

How to Spot a Communist


CONELRAD6401240

Uploaded on Jul 10, 2010

How to Spot a Communist

Environmental Justice http://courses.dce.harvard.edu/~envre145
Environment Ethics http://courses.dce.harvard.edu/~envre120

Climate Denial Crock of the Week: “The Earth is Carbon Starved.”


greenman3610

Uploaded on Aug 26, 2010

Help Support Crock of the Week:
http://www.climatecrocks.com

The history of the earth is immense, and diverse – and its easy to get confused and mangle history, — to mix things that never belonged together in the real world.

What was natural in the distant past might not be a good fit alongside man’s creations.
Human beings and the climate of the ancient world, could find themselves on a collision course.

Richard Alley, Bjerknes Lecture, American Geophysical Union,
December 2009
http://www.agu.org/meetings/fm09/lectures/lecture_videos/A23A.shtml

Paleocene/Eocene Thermal Maximum sediments
http://www.ecord.org/pi/core-replicas.html
http://www.gns.cri.nz/research/gct/obj3.html

Hydrogen sulfide blooms off Namibia
http://earthobservatory.nasa.gov/IOTD/view.php?id=44340&src=eorss-iotd
http://io9.com/5566772/the-hydrogen-sulfide-plumes-of-namibias-diamond-coast

snowball earth – dropstones and carbon cap
http://www.earlham.edu/~reedal/snowball.htm

“The Day Earth Died” BBC
part 1
http://www.veoh.com/collection/LostCivilizations/watch/v1140140YtSAYJ9H#watch…
part 2
http://www.veoh.com/collection/LostCivilizations/watch/v1140140YtSAYJ9H#watch…

A major drop in seawater 87Sr/86Sr during the Middle Ordovician (Darriwilian): Links to volcanism and climate?
http://www.geology.ohio-state.edu/~saltzman/young_et_al_2009.pdf

Tripati et al, Miocene sea levels and CO2
http://newsroom.ucla.edu/portal/ucla/last-time-carbon-dioxide-levels-111074.aspx
http://www.seas.harvard.edu/climate/seminars/pdfs/tripati.etal.sci.2009.pdf

University of York, Greenhouse/Extinction connection
http://www.york.ac.uk/news-and-events/news/2007/mass-extinction/

US Geological Survey, Volcanic gases
http://volcanoes.usgs.gov/hazards/gas/climate.php

Earth: A Biography
http://www.bbcearth.com/earth-explorer/earth-the-biography/
http://channel.nationalgeographic.com/series/earth-the-biography
http://www.netflix.com/WiMovie/Earth-The-Biography/70099811?strackid=143848c0…

Global Climate Change http://courses.dce.harvard.edu/~envre130
Environmental Justice http://courses.dce.harvard.edu/~envre145
Environment Ethics http://courses.dce.harvard.edu/~envre120

Inspiration Farm – Cultivating Nourishing Food and Creativity


peakmoment

Published on Jan 21, 2013

“Changing times calls for changing lifestyles.” says Brian Kerkvliet. “So [weapos;ve] put more energy into the land? The more you get your fingers in the soil, the more endorphins rush through your head. You get excited by all of that.” Using permaculture and biodynamic practices, Brianapos;s family is endlessly experimenting and innovating to find what works. His wife Alexandra and daughter Rosalie introduce us to the goats, pigs, and cows who are essential players in their farmapos;s web of life. Donapos;t miss the outdoor shower with water heated by microbes in the compost pile! (Episode 226). [inspirationfarm.com]

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Environmental Justice http://courses.dce.harvard.edu/~envre145
Environment Ethics http://courses.dce.harvard.edu/~envre120
Cyprus International Institute (CII) (Harvard School of Public Health) http://Cyprus-Institute.us
Food-Matters http://Food-Matters.TV

PLANET PROGRESS – Urban Earth Keepers: Victory Gardens


iNDIGOPROJECTTV

Uploaded on Jun 21, 2009

The Victory Garden movement is an old tradition to those Americans who were previously called upon to grow fruits and vegetables to aid in the food shortages of World War II. After many years of being dormant, the movement is resuming in a milieu of locations to decrease the dependence on mass-produced food, reduce our carbon footprint, and create an awareness of the foods were using to nourish our bodies. Nonprofit organizations like Garden for the Environment are emerging with a vision to inspire farming beyond the borders of countryside acres to parcels of land sprouting amid concrete backyards.

Environmental Justice http://courses.dce.harvard.edu/~envre145
Environment Ethics http://courses.dce.harvard.edu/~envre120
Food-Matters http://Food-Matters.TV