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Post Info TOPIC: Greenhouse Gases
Blobrana


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Hydropower
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 Shattering the myth of big hydropower projects being clean, a new scientific study has revealed that large dams in the country are accountable for at least 19 percent of India's global warming emissions, especially methane.
According to the study, Indian dams are larger methane emitters and total methane emissions from the country's large dams could be around 33.5 million tonnes (MT) per annum, including emissions from reservoirs (1.1 MT), spillways (13.2 MT) and turbines of hydropower dams (19.2 MT).
While total generation of methane from India's reservoirs is around 45.8 MT, emission of methane from all the reservoirs of the world remained 120 MT per annum, said the study conducted by Brazil's National Institute for Space Research (INPE).

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Blobrana


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Fighting Climate Change
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The researchers sailing aboard Weatherbird II arent studying global warming theyre trying to end it. The ships three-year mission, funded by for-profit eco­renewal firm Planktos, is to seed oceans with iron-rich dust, which should trigger plankton blooms. More plankton means more carbon dioxide can be pulled out of the atmosphere and trapped in the seas. The project is the first large-scale effort in a controversial field, known as geoengineering, that aims to actively combat global warming. Despite the risk of unintended environmental side effects, the Weatherbird II is already spreading iron in its wake. And it is only one of several extreme geoengineering attack plans on the table.

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Blobrana


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RE: Greenhouse Gases
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One of Earth's most important absorbers of carbon dioxide (CO2) is failing to soak up as much of the greenhouse gas as it was expected to, scientists say.
The decline of Antarctica's Southern Ocean carbon "sink" - or reservoir - means that atmospheric CO2 levels may be higher in future than predicted.
These carbon sinks are vital as they mop up excess CO2 from the atmosphere, slowing down global warming.
The study, by an international team, is published in the journal Science.

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Blobrana


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Palaeocene-Eocene Thermal Maximum
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The same volcanic eruptions that sundered Greenland from Western Europe and created Iceland also triggered intense global warming 55 million years ago, scientists say.

There has been evidence in the marine record of this period of global warming, and evidence in the geologic record of the eruptions at roughly the same time; but until now there has been no direct link between the two - Robert Duncan,  oceanic scientist at Oregon State University.

During the Palaeocene-Eocene Thermal Maximum (PETM), massive amounts of greenhouse gases were injected into the oceans and atmosphere, causing global sea surface temperatures to rise by up to 10 degrees Fahrenheit.

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Blobrana


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RE: Greenhouse Gases
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As climate change continues to make headlines across the world, participants at the 2007 Envisat Symposium this week are hearing how Earth observation satellites allow scientists to better understand the parameters involved in global warming and how this is impacting the planet.

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Blobrana


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You know that report that just came out and said that Global Warming is going to devastate the planet? Going to be waaay worse then that!
A new global warming report issued Friday by the United Nations paints a near-apocalyptic vision of Earths future: hundreds of millions of people short of water, extreme food shortages in Africa, a landscape ravaged by floods and millions of species sentenced to extinction. Despite its harsh vision, the report was quickly criticised by some scientists who said its findings were watered down at the last minute by governments seeking to deflect calls for action.

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Blobrana


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Climate change
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Billions of people face shortages of food and water and increased risk of flooding, experts at a major climate change conference have warned.
The bleak conclusion came ahead of the publication of a key report by hundreds of international environmental experts.
Agreement on the final wording of the report was reached after a marathon debate through the night in Brussels.
People living in poverty would be worst affected by the effects of climate change, the gathered experts said.

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Blobrana


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Kiribati
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The 33 atolls that make up Kiribati - the former Gilbert Islands - occupy a vast area in the Pacific. They stretch nearly 4,000 km from east to west, more than 2,000 km from north to south, and straddle the Equator.
The country won independence from the United Kingdom in 1979. Many of the atolls are inhabited; most of them are very low-lying and at risk from rising sea levels.

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Blobrana


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Sydney in climate change blackout
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image of the city of Sydney in darkness...

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Blobrana


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Lights have been turned off across Australia's largest city, Sydney, in a hour-long event aimed at raising awareness of global warming.
At 1930 (0930 GMT) the city's skyline dimmed and normally bright landmarks like the Opera House and the Harbour Bridge went dark.
The so-called Earth Hour is supported by the New South Wales government, environmental groups and businesses.
Sydney hopes the event will make a very big statement on climate change.
The city of four million people is aiming to become the first anywhere to achieve a blackout on this scale.
The BBC's Phil Mercer, in Sydney, says by and large Sydney had never been this dark.

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