Antarctica turning green
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Images of a white, barren continent could need updating as climate change brings more plants to Antarctica's formerly frozen shores.
An international report issued on Tuesday has found that winter temperatures in west Antarctica have increased by as much as five degrees Celsius - and that allows cushion plants and grasses to thrive.
"We're seeing more plant growth," Dr Colin Summerhayes, executive director of the Scientific Committee on Antarctic Research (SCAR), told AAP.
"It's getting a bit greener."
The SCAR report found warm temperatures brought summer rain instead of snow to western Antarctica - that's the bit near South America - so more rock and soil was exposed to the sky and to plants. And thanks to human visitors, 'alien' species like flies and bacteria were also increasing.
Dr Summerhayes, speaking from Cambridge University in the UK, said part of Antarctica was starting to look like Macquarie Island.
But scientists and tourists heading to the South Pole shouldn't leave behind their snow shoes just yet.
Antarctica's climate is a mixed bag, the report found. Part of the continent is warming up, but other areas are stable or cooling - which has prompted some to question whether climate change is actually happening.
The report's authors said its findings were consistent with human-induced climate change.
The report found there has been little change in temperature over most of Antarctica, and sea ice has increased by 10 percent in the last 30 years.
But sea ice doesn't affect sea levels - it's the ice which sits on land that counts. And Antarctica's land ice, in the form of ice shelves and glaciers, is melting.
Dr Summerhayes said some western Antarctic glaciers were retreating 10 metres a day.
"Icebergs are spinning off the end of that glacier much faster than they ever did, and they are melting and contributing to sea level rise," he said of the Amundsen glacier.
The SCAR report found that melting of the western Antarctic ice sheet would likely contribute "tens of centimetres" to a global sea level rise of up to 1.4m by 2100, which is a greater rise than UN scientists have predicted.
Dr Summerhayes said the ozone layer was tipped to close later this century - good news for beachgoers who may escape skin cancer, but bad news for Antarctic penguins because warming would accelerate.
The SCAR report, Antarctic Climate Change and the Environment, is based on work from 100 scientists in 13 countries.
- AAP
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Most of us are aware of our own climate; it has not been getting warmer in New Zealand it has been getting colder. There used to be forests in Antarctica, and Greenland is not called green land for nothing. (Natural climate change, we are probably still coming out of the mini ice age) Here is a little experiment you can do at home: Take a glass, half fill it with ice cubes, fill the rest up with water- now watch the ice melt from what this scientist is saying you should expect your kitchen bench to be flooded –ya reckon?
"Climategate"... what low caliber tosh. Weather paterns change because of global warming, some places will become colder, for the most others will become warmer. I'm aghast simpletons still take 'global warming' at face value as if everywhere will simply warm up.
Agreed, AGW is a crock Google ClimateGate and see that the scientists have been cooking up the data all these years.
Everyone is waking up now, we need to ditch our ETS and not pay any money to these new world order tyrants!
cherry-picking the data and focusing on only small portions of information is often misleading, as it focuses on short term trends and cycles, ignoring more long-term cycles and trends. Selecting specific information on a time scale of hundreds or thousands of years to favour a predetermined viewpoint does not provide significant or substantial evidence to suggest that the earth is now entering an episode of cooling.
1998 was an unusually hot year because it was an extreme El Niño event....every year since 1992 has been warmer than average, with 2005 the second warmest year ever recorded since records began in 1850. So, if you use 1998 as your starting point, it’s hardly surprising all years since have been cooler. The point is that most of these subsequent years still rank among the warmest since records began. The climate record has shown there are periods of cooling relative to one year with the subsequent years cooler than this one year, which are then superimposed on a longer period of warming. So, the argument that we are now entering a cooling phase is somewhat defunct.
Mike #26 so Pete and I are crackpots are we? Well if you look at the comments you will see we are definitely not alone in our views. In fact I think more and more people are now waking up to the fact that this whole concept of 'human induced climate' change is by no means a certainty. I want to know before I get shafted (lets fgace it wer are going to pay for this bloody thing) that it is humans who are responsible and I don't believe for a second that it is. Try googling 'scientists sign up debunk global warming' or 'climategate' or maybe read Air Con and you will see why. We don't see any of this stuff in the media which is just poor journalism in my opinion. Whatever happened to showing both sides of a story?
next you'll be telling me we landed on the moon. sheeesh
Rupert Murdoch said it best the media is here to "create the news".
Why are people complaining about Climategate? It was three emails from one university over a decade. Take anyone's emails over a decade and it's easy to take three out of context no matter their job. And, how on earth does that mean every scientist in the world is wrong??? Man, the conspiracy theorists are going crazy over this one.
Sonny Blount why is it wrong? You haven't provided any scientific evidence to say it is. But then the people who claim man-made climate change isn't happening can't seem to find any recognised science to counter the fact the oceans are warming, Greenland and West Antarctica is melting faster than expected, oceans are rising, glaciers are disappearing, and places like Australia have had their hottest months ever this year.
This is all a clock work cycle that has gone on for hundreds of thousands of years. It has to do with Solar Cycles and corrections in the magnetic field of the Sun. Global warming has been measured on all of the planets in the solar system for decades. Eb and flow people. When the science (The one world religion) does not match up with accepted theories... well the numbers have to be fudged... then the original data immediately "Lost". Those who fight hard to say global warming is real are right. It has happened many times in global history. These cycles happened without the aid of Man. They will hold on to this belief/new age beliefe to the bitter end. The only good that can come from these "Believers" is that we might be able to slow polution which is breathed in and out by the whole Life/Food chain causing damage/mutations to the DNA of all creatures. That is where the focus should be, they will not be able to prove we created global warming, Science/the new religion cannot prove it without cherry picking data to match their preconceived ideas and agendas.
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Antarctica turning green huh. Its about time those Antarcticans got the message and joined in to save the planet. Some of the commentators should follow the Antarcticans example and turn green too ;)