Archive for ‘climate change’

September 7, 2013

The War on Science

Canada now has a government dedicated to weakening science, but this is a world wide problem. This documentary reveals how science denial is weakening our ability to deal with the problems we are creating:

September 13, 2012

Climate Change – Symphony of Science

Visit Symphony of Science for more science remixes.

July 21, 2011

Alberta’s threat to coastal British Columbia

National Geographic magazine is featuring an article that shows how Canada’s push to become a player in the world oil market will threaten key habitats along the British Columbia coast. Included in the threat? The Great Bear Rainforest, home of the Spirit Bear.

From the article Pipeline Through Paradise:

With the Northern Gateway proposal, the Gitga’at and the rain forest that surrounds them have been caught up in a great geopolitical oil game. The Northern Gateway isn’t just a pipeline. It’s Canada’s bid to become a global player in the petroleum market.

The proven reserves in Alberta‘s oil sands are second only to Saudi Arabia’s oil fields, yet the United States today is virtually the sole export market for oil sands crude. A Canadian company, Enbridge, wants to build a $5.8 billion ($5.5 billion Canadian) pipeline to transport oil 731 miles, from Alberta to Kitimat. The double-barreled pipeline would carry oil west and send condensate, a liquid used to dilute the thick crude and allow it to flow, east to Alberta. Giant tankers—some nearly as long as the Empire State Building is tall, loaded with condensate or up to 2.15 million barrels of crude—would thread between a jigsaw of islands to and from Kitimat.

A West Coast oil port would open the Alberta oil sands to Asian markets, including China. Sinopec, China’s state-owned oil company, is among the Asian refiners and Canadian oil firms that have invested $105 million into moving the Northern Gateway pipeline through the planning and permitting stage.

Canada has been slow to deal with the reality of global warming due to the use of fossil fuels. It is a shame that both the federal and provincial governments are promoting oil when they have done so little to prevent the fallout of its consumption.

Read the full article online in Pipeline Through Paradise.

December 4, 2009

The Weight of Climate Science

From TedTalks:

In 4 minutes, atmospheric chemist Rachel Pike provides a glimpse of the massive scientific effort behind the bold headlines on climate change, with her team — one of thousands who contributed — taking a risky flight over the rainforest in pursuit of data on a key molecule.

 This is followed by a segment on how Stockholm has decreased emissions by restricting traffic. (IBM advertisement)

http://www.youtube.com/v/QlyorcJ28UA&hl=en_US&fs=1&rel=0&hd=1

October 15, 2009

The Columbia Icefield and Climate Change

The Columbia Icefield sprawls over the Canadian Rockies on the Continental Divide of North America. The icefield lies partly between Banff and the southern end of Jasper National Park. It is about 325 km² in area and it feeds eight major glaciers including the Athabasca, Castleguard, Columbia, Dome, Stutfield and the Saskatchewan glaciers.The melt waters flow to the Pacific via the Columbia and Fraser rivers and the Arctic via the Athabasca river and the Atlantic via the North Saskatchewan river. (Strictly speaking, the Hudson Bay, into which the N.Saskatchewan River flows is part of the Arctic Ocean, but it also connects to the Atlantic by means of the Hudson Strait) These rivers are major sources of water and are indispensable to all of humankind’s endeavours throughout western Canada, not to mention the many and varied natural habitats they support.

The first view of the Columbia Icefields was recorded was by J. Norman Collie and Hermann Woolley on August 18, 1898. Norman Collie recollected his impression of the view after their succesful first accent of Mount Athabasca:

The view that lay before us in the evening light was one which does not often fall to the lot of modern mountaineers. A new world was spread at our feet; to the westward stretched a vast Icefield probably never seen by human eye and surrounded by entirely unknown, unnamed and unclimbed peaks“. (from Explore Rockies)

Since the era of Collie and Woolley the icefield has changed drastically. Scientific studies indicate that the melting that has occurred in the 20th century by far exceeds natural patterns. The Canadian Glacier Inventory Project has noted the following concerning the Athabasca Glacier:

During the 20th century, the overall mass-balance trend for Athabasca has been strongly negative (Ommanney, 2002).. In 1870, the glacier was about 1.5 times its present total volume (1,013×106 m3) and 2.5 times its area (6×106 m2 vs. 2.6×106 m2). The average rates of decrease in volume have declined: 3.2×106 m3 a–1 for 1870–1971 to 2.5×106 m3 a–1 for 1959–1971 (Ommanney, 2002).

In the abstract of a study done by Brian Luckman and Trudy Kavanagh, the severity of change is shown:

This paper presents examples of environmental changes in the Canadian Rockies in the context of a 1.5°C increase in mean annual temperatures over the last 100 years. During this period increases in winter temperatures have been more than twice as large as those during spring and summer. Glacier cover has decreased by at least 25% during the 20th century and glacier fronts have receded to positions last occupied ca. 3000 years ago. These two lines of evidence suggest that the climate of the late 20th century is exceptional in the context of the last 1000 to 3000 years.

A tree-ring based study at the Columbia Icefield indicated the following:

The 1961-1990 reference period is clearly warmer than any equivalent-length period over the last 800 years. This record of summer warmth reinforces evidence of significant warming at several high- altitude and high-latitude sites around the Northern Hemisphere in the late twentieth century.

And finally, data from satellite imagry has measured icefield recession in the period between 1975 and 2001 and it also verifies the rapid melting of the icefield. If melting continues at the current rate, the Saskatchewan glacial arm of the Columbia Icefield will disappear in 88 years.That is a drastic amount of ecological change for one lifetime.

If the present rate of melting continues, the Columbia Icefield will be gone in about 300 years. With the loss of glaciers will be the loss of the major source of water for Alberta and British Columbia. Climate change must be taken seriously and governments must act now to deal with the man made sources of greenhouse gasses that are so rapidly changing our environment.

(Both photographs © Adrian Thysse 2009. Click to enlarge. The first shows three glaciers, left to right, an arm of  Saskatchewan Sunwapta glacier, Athabasca glacier and Dome glacier. The second photograph shows how far the Athabasca glacier has retreated since 1942)

Sources:

Canadian Glacier Inventory Project, McMaster University

Impact of Climate Fluctuations on Mountain Environments in the Canadian Rockies by Brian Luckman and Trudy Kavanagh (2000)

Tree-ring based reconstruction of summer temperatures at the Columbia Icefield, Alberta, Canada, AD 1073-1983 by B.H. Luckman, K.R. Briffa, P.D. Jones and F.H. Schweinguber. (1997)

The cumulative effects of climate warming and other human stresses on Canadian freshwaters in the new millennium by D. W. Schindler (2001)

The Big Melt Down: Columbia Icefield, Canada by Professor Paul R. Baumann, Department of Geography, State University of New York. (2001)

October 7, 2009

Home

New on Evolving Complexity Channel, the brilliantly filmed documentary - Home by Yann Arthus-Bertrand:

We are living in exceptional times. Scientists tell us that we have 10 years to change the way we live, avert the depletion of natural resources and the catastrophic evolution of the Earth’s climate.
The stakes are high for us and our children. Everyone should take part in the effort, and HOME has been conceived to take a message of mobilization out to every human being.
For this purpose, HOME needs to be free. A patron, the PPR Group, made this possible. EuropaCorp, the distributor, also pledged not to make any profit because Home is a non-profit film.

HOME has been made for you : share it! And act for the planet.

Yann Arthus-Bertrand

HOME official website
http://www.home-2009.com
PPR is proud to support HOME
http://www.ppr.com
HOME is a carbon offset movie
http://www.actioncarbone.org
More information about the Planet
http://www.goodplanet.info



(Photograph: Caravan of dromedaries near Tichit, Mauritania

© “HOME” – an ELZEVIR FILMS – EUROPACORP coproduction)




October 1, 2009

Climate Change – Blog Action Day 2009

The 15th of October will be Blog Action Day 2009, and the issue is Climate Change:

Blog Action Day is an annual event that unites the world’s bloggers in posting about the same issue on the same day on their own blogs with the aim of sparking discussion around an issue of global importance. Blog Action Day 2009 will be the largest-ever social change event on the web. One day. One issue. Thousands of voices.

http://www.youtube.com/v/3CnIJ19EVMo&hl=en&fs=1&rel=0

Bloggers who wish to participate can register here.

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