Polar Oceanography
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Polar Oceanography
Site for topics on Polar Oceanography, Global Climate Change and Global Warming.
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It's Time to Stop Portraying Climate Change as a 'Debate'

It's Time to Stop Portraying Climate Change as a 'Debate' | Polar Oceanography | Scoop.it
The debate about climate change is over. Now it's important to figure out ways to get the public engaged and figure out how to stop it.
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IPCC model global warming projections have done much better than you think - The Guardian

IPCC model global warming projections have done much better than you think - The Guardian | Polar Oceanography | Scoop.it
The Guardian IPCC model global warming projections have done much better than you think The Guardian The figure below from the 2013 Intergovernmental Panel on Climate Change (IPCC) report compares the global surface warming projections made in the...
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Cold, salty and promiscuous -- Gene-shuffling microbes dominate ...

Cold, salty and promiscuous -- Gene-shuffling microbes dominate ... | Polar Oceanography | Scoop.it
Sequestered in Antarctica's Vestfold Hills, Deep Lake became isolated from the ocean 3,500 years ago by the Antarctic continent rising, resulting in a saltwater ecosystem that remains liquid in extreme cold, and providing ...
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Climate Models Show Potential 21st Century Temperature and Precipitation Changes

Climate Models Show Potential 21st Century Temperature and Precipitation Changes | Polar Oceanography | Scoop.it
Greenbelt MD (SPX) Oct 01, 2013 - New data visualizations from the NASA Center for Climate Simulation and NASA's Scientific Visualization Studio at Goddard Space Flight Center, Greenbelt, Md., show how climate models used in the new...

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Study: warming of Antarctic peninsula due to ocean and atmospheric circulation patterns

Study: warming of Antarctic peninsula due to ocean  and atmospheric circulation patterns | Polar Oceanography | Scoop.it
From the University of Washington, something we covered earlier in WUWT from the BAS, but UW is now just getting around to press releases. The Antarctic peninsula is essentially a different Koppen ...
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Sea Level Rise

Sea Level Rise | Polar Oceanography | Scoop.it
This section introduces sea level rise, with sections on Holocene sea level change (eustatic and isostatic), current observations and future predictions.
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Antarctic nations to wrestle again over sanctuary plan

Antarctic nations to wrestle again over sanctuary plan | Polar Oceanography | Scoop.it
Two plans of unprecedented scope are on the table, aimed at protecting vast, pristine waters and 16,000 species from human predation
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Life Under Antarctica's Ice | DiscoverMagazine.com

Life Under Antarctica's Ice | DiscoverMagazine.com | Polar Oceanography | Scoop.it
A team drills thousands of feet into the West Antarctic Ice Sheet to reach a lake buried for millennia.
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Why you sound so stupid when you say “global warming has stopped”

Why you sound so stupid when you say “global warming has stopped” | Polar Oceanography | Scoop.it
There is not a plateau in global warming. Global warming has not stopped. However, climate change (including and especially global warming) is one or two orders of magnitude more complex that, say, the plot of this book:.
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So much sea ice in Antarctica that a research vessel gets stuck, in ...

So much sea ice in Antarctica that a research vessel gets stuck, in ... | Polar Oceanography | Scoop.it
UPDATE: Turns out this "research" vessel was mostly a taxpayer funded junket for getting video stories to BBC in the UK and ABC in Australia, see update2 below. It is summer in the southern hemisphere and yet there is still ...
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The face of Antarctica

The face of Antarctica | Polar Oceanography | Scoop.it
This amazing photo was recently posted on Reddit by user strummingmusic (aka, Seth Beaudrealt) who took the shot in Collins Bay, Antarctica while he was working as a tall ship guide between Antarct...
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Twitter / IncredibleViews: An Awesome Iceberg, Antarctica ...

Twitter / IncredibleViews: An Awesome Iceberg, Antarctica ... | Polar Oceanography | Scoop.it
An Awesome Iceberg, Antarctica http://t.co/3fSpUNbyJy
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New study: Ocean-driven warming along the western Antarctic Peninsula needs to be considered as part of a natural centennial timescale cycle of climate variability

New study: Ocean-driven warming along the western Antarctic Peninsula needs to be considered as part of a natural centennial timescale cycle of climate variability | Polar Oceanography | Scoop.it
From Cardiff University: Tiny fossils hold answers to big questions on climate change Research explores 12,000 year fossil record The western Antarctic Peninsula is one of the fastest warming regio...
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Scientists discover 100,000-year-old organisms in frozen Antarctic lake

Scientists discover 100,000-year-old organisms in frozen Antarctic lake | Polar Oceanography | Scoop.it
The secret to how life could survive on alien planets may be buried within a frozen Antarctic lake. Resilient microbes that researchers think may contain those very secrets have been hidden away...
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Submerged Volcanoes Cast Doubt on Antarctic Glaciation Theory | Geology | Sci-News.com

Submerged Volcanoes Cast Doubt on Antarctic Glaciation Theory | Geology | Sci-News.com | Polar Oceanography | Scoop.it
Researchers have found geologic evidence that casts doubt on the prevailing theory of what triggered the glaciation of Antarctica.
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Global temperature highest since 5,000 years ago

Global temperature highest since 5,000 years ago | Polar Oceanography | Scoop.it
In the past 100 years, average temperatures on Earth have changed by 1.3 degrees. Previously, that large of a swing took 5,000 years. That's the word from researchers who pored over temperature data going back to the end of the last ice age.

 

There's plenty of evidence that the climate has warmed up over the past century, and climate scientists know this has happened throughout the history of the planet. But they want to know more about how this warming is different.

 

Now a research team says it has some new answers. It has put together a record of global temperatures going back to the end of the last ice age — about 11,000 years ago — when mammoths and saber-tooth cats roamed the planet. The study confirms that what we're seeing now is unprecedented.

 

What the researchers did is peer into the past. They read ice cores from polar regions that show what temperatures were like over hundreds of thousands of years. But those only reveal changes in those specific regions; cores aren't so good at depicting what happened to the whole planet. Tree rings give a more global record of temperatures, but only back about 2,000 years.

 

Shaun Marcott, a geologist at Oregon State University, says "global temperatures are warmer than about 75 percent of anything we've seen over the last 11,000 years or so." The other way to look at that is, 25 percent of the time since the last ice age, it's been warmer than now.

 

You might think, so what's to worry about? But Marcott says the record shows just how unusual our current warming is. "It's really the rates of change here that's amazing and atypical," he says. Essentially, it's warming up superfast.

 

Here's what happened. After the end of the ice age, the planet got warmer. Then, 5,000 years ago, it started to get cooler — but really slowly. In all, it cooled 1.3 degrees Fahrenheit, up until the last century or so. Then it flipped again — global average temperature shot up.

 

"Temperatures now have gone from that cold period to the warm period in just 100 years," Marcott says.

 

So it's taken just 100 years for the average temperature to change by 1.3 degrees, when it took 5,000 years to do that before.

 

The research team tracked temperature by studying chemicals in the shells of tiny, fossilized sea creatures called foraminifera. Their temperature record matches other techniques that look back 2,000 years, which supports the validity of their much longer record.

 


Via Dr. Stefan Gruenwald
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