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NASA Sees Arctic Ocean Circulation Do an About-Face

Jet Propulsion Laboratory – November 13, 2007

Here we go again! It seems like every time we turn around there is a new study that suggests that global warming is going to get worse or it is going to reverse. The only clear evidence that I can find is that the climate is so complex that we simply don’t understand it yet.

A team of scientists for NASA has released a study that suggests that the Arctic Ocean circulation is about to change directions. It appears to do this somewhat frequently although it is doubtful that we really understand what transpired prior to the middle of the 20th century.

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THE CHANGING ARCTIC: A RESPONSE TO FREEMAN DYSON’S "HERETICAL THOUGHTS"

Edge – August 14, 2007

I recently wrote about Dr. Dyson’s article on global warming. I found his analysis to be quite interesting even though he did meander into off topic conversations.

Alun Anderson wrote a rebuttal to the paper and it also merits consideration and contemplation. This is not a contest of votes, but rather a way for one to become educated in the various issues and arrive at a reasonable opinion.

It is unfortunate that Dr. Anderson does not directly repudiate many of Dr. Dyson’s discussions. Is this because they were true or because they were not worthy of his effort? It is not obvious in this article.

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HERETICAL THOUGHTS ABOUT SCIENCE AND SOCIETY

Edge – August 8, 2007

There are two recent articles on the climate change in the edge.  The great thing about these two articles is that they give opposing viewpoints of the issue which allows the curious reader to evaluate the arguments given and then make an informed decision. It is also not required that you agree with only one argument, but instead you can take pieces and parts from both sides to arrive at your own conclusion. This is in perfect keeping with my goal of being fair and balanced.

Today, I will reference the first article. I will follow up later with the second article. I can only take a few small snippets from each so I encourage you to click through and read more.

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Rapid rise in global warming is forecast

Times Online – May 18, 2007

The oceans are the biggest sink of carbon dioxide.  The ability for them to absorb CO2 is a topic that is discussed often in the scientific periodicals.

This article covers a scientific study which concludes that the oceans are slowing down in the absorption of CO2 gas. This is a danger as CO2 is one of the greenhouse gases and if its concentration increases too dramatically there could be more heat captured into the atmosphere, increasing the temperature of the globe.

The oceans are losing the capacity to soak up rising man-made carbon emissions, which is increasing the rate of global warming by up to 30 per cent, scientists said

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Why global climate models do not give a realistic description of the local climate

RealClimate – May 27, 2007

I have written about this excellent site often (here and here and here and here and here) but I really must encourage all of my regular readers to read this article on climate models.  As you know, I regularly have called for more effort to be done in this area of computer technology as I honestly believe that the climate scientists need a concerted effort for a rapid increase in capability in handling massive amounts of numbers and equations in parallel.

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Hurricane forecaster: Oceans, not CO2, cause global warming

The Mohave Daily News – April 30, 2007

Dr. Gray is one of the most quoted scientists out there proclaiming that some climatologists have made a mistake that we are approaching a tipping point for dramatic climate change. Some people then automatically label him as a nut or a kook but that is unfair. This man has spent his lifetime studying violent weather and for years was considered to be among the foremost scientists on that issue. Many still give him that honor.

Dr. Gray is saying that it is ocean currents that are changing the temperature in the atmosphere and that we are on the verge of a reversal that would leave the weather cooler. This flies in the face of many other theories and for that reason we need to listen to what this man has to say, understand it, and see if it makes sense.

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California-Sized Area of Ice Melts in Antarctica

LiveScience – May 15, 2007

This is a news report about recent melting of ice in Antarctica.  The article does not make claims of the cause of the warming that melted this ice but does discuss the potential ramifications of the ice melt.

Warm temperatures melted an area of western Antarctica that adds up to the size of California in January 2005, scientists report.

Satellite data collected by the scientists between July 1999 and July 2005 showed clear signs that melting had occurred in multiple distinct regions, including far inland and at high latitudes and elevations, where melt had been considered unlikely.

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California-Sized Area of Ice Melts in Antarctica

LiveScience – May 15, 2007

This is a news report about recent melting of ice in Antarctica.  The article does not make claims of the cause of the warming that melted this ice but does discuss the potential ramifications of the ice melt.

Warm temperatures melted an area of western Antarctica that adds up to the size of California in January 2005, scientists report.

Satellite data collected by the scientists between July 1999 and July 2005 showed clear signs that melting had occurred in multiple distinct regions, including far inland and at high latitudes and elevations, where melt had been considered unlikely.

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Global warming 55 million years ago shifted ocean currents

Brietbart – January 4, 2007

This is a very good overview of a scientific paper that details how a historic global warming event dramatically changed the Earth’s ocean currents. The article does not lay significant claim as to what caused the warming, only its dramatic effects. The article does compare today’s level of carbon dioxide and theorizes a similar catastrophe.

The big event, the Palaeocene/Eocene Thermal Maximum (PETM), saw the planet’s surface temperature rise by between five and eight degrees C (nine and 16.2 F) in a very short time, unleashing climate shifts that endured tens of thousands of years.

With a painstaking reconstruction, Nunes and Norris found that the world’s ocean current system did a U-turn during the PETM — and then, ultimately, reversed itself.

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Global warming 55 million years ago shifted ocean currents

Breitbart.com – January 4, 2007

This article details a study regarding global warming that occurred 55 million years ago and the very dramatic and long-term changes that appeared to be caused.  It is a very interesting study that should be understood to be “theory” and not fact.  It is great reading if you want to understand what could occur if the earth’s temperature increased dramatically.

An extraordinary burst of global warming that occurred around 55 million years ago dramatically reversed Earth’s pattern of ocean currents, a finding that strengthens modern-day concern about climate change, a study says.  The big event, the Palaeocene/Eocene Thermal Maximum (PETM), saw the planet’s surface temperature rise by between five and eight degrees C (nine and 16.2 F) in a very short time, unleashing climate shifts that endured tens of thousands of years.

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