New Paper finds significant cooling of Atlantic Ocean over past millennium

[Sunsettommy]

The Hockey Schtick

December 29,2011

EXCERPT:

A paper published today in the journal Paleoceanography finds that Atlantic Ocean surface temperatures have significantly cooled over the past millennium, since the Medieval Warming Period from about 950-1200 AD.

LINK

[Climate Realist]

Interesting, those graphs clearly show the recent mild warming to be a mere spike on a long multi thousand year down trend (perhaps towards the next ice- age??)

[Sunsettommy]

It is supporting the evidence of long term cooling.

One that is now about 4,000 years long.

[Derek]

Hasn't the greenland ice core record always shown an overall cooling trend for the whole of the Holocene?
Link - http://s53.photobucket.com/albums/g43/De...ide6-1.jpg


With ups and downs of course.

Some ups..
Link - http://i53.photobucket.com/albums/g43/De...ide2-1.jpg


Some downs...
Link - http://s53.photobucket.com/albums/g43/De...ide3-1.jpg
Link -

[Sunsettommy]

From around 1500 BC onward.The cooling trend is continuous.

Before that it was very warm around 6000 BC.Then it cooled for a few thousand years.Then it warmed up almost back to what it was over 4000 years earlier.

After that.It has been all downhill.

The Insolation level at 65 degree N. Went negative.around 3,000 years ago.

This means were are definitely heading for the next glacial period.

[Derek]

Yes, we are heading for the next glacial period, of that there is no doubt, it is just the "when" that remains unanswered.

Iit would seem that glacial (100 to 125 thousand year) periods are always searated by interglacial (8 [usually 12] to 18 thousand year) periods.
Well, from the last half million years that seems the case anyways.
So, as we are 11,500 years into the Holocene Interglacial then a glacial period is due about "now".
It is also apparrent that when a glacial period starts it starts very quickly, less than a few hundred years, some would arque far less than that.
Ice ages, or glacial periods seems to end just as quickly as they start as well.

Are we now at the drop off to the next glacial, we could be.
In a few years time (ie, about 30) we will almost certainly know for definate.
Just now, I am not sure "now" is now, but it could be, it is due. some arque it is overdue already.

[Sunsettommy]

Quote:Yes, we are heading for the next glacial period, of that there is no doubt, it is just the "when" that remains unanswered.

Well we are now in what one researcher stated.A climate Autumn.That means we are well past the warm part of the interglacial.

Quote:Iit would seem that glacial (100 to 125 thousand year) periods are always searated by interglacial (8 [usually 12] to 18 thousand year) periods.
Well, from the last half million years that seems the case anyways.

That is the old line on the 100,000 year cycle.

Now it has been discovered that they vary more than we once thought.One interglacial can last 40,000 years.Another can last just 16,000 years.

The Holocene we are in now.Is around 16,000 years old.Maybe 1 to 2,000 more years before we go into the glacial age? Between now and 2,000 years.We will see the growth of glaciers and new one's forming.

There will be short cycles of warming and retreat.In the intervening time.But definite ice growth is now the main concern in the future.

Quote:It is also apparrent that when a glacial period starts it starts very quickly, less than a few hundred years, some would arque far less than that.
Ice ages, or glacial periods seems to end just as quickly as they start as well.

The Greenland Ice core record.Shows a regular pattern of periodic downward cooling trend for around 80 to 100,000 years.Then warm up rapidly right at the end.

From your first chart.Note that FOLLOWING the 1500 BC warming peak is a succession of weaker warm periods.The modern warming the weakest of the last 4.It is almost played out.And the next centuries long cooling will soon commence once again.

This is what a 3,000 year long NEGATIVE insolation brings on us.The last 1,000 years is the coldest 1,000 years of the Holocene.Warming trends get less significant.And cooling trends more significant.

It has been cooling for around 4,000 years now.The Insolation curve had been dropping for a long time BEFORE it finally entered the negative insolation trend.That was 3,000 years ago.

Quote:Are we now at the drop off to the next glacial, we could be.
In a few years time (ie, about 30) we will almost certainly know for definate.
Just now, I am not sure "now" is now, but it could be, it is due. some arque it is overdue already.

We are already at Climate Autumn part of the interglacial.Signifying that colder climate is the expected.That existing glaciers grow and new ones form.

Many of the North American glaciers are less than 4,000 years old.There were none.Before that.For a long time.

The Fremont Glacier in Wyoming,USA.Is less than 350 years old.It was born in the The Little Ice age (LIA).And large enough now to survive the nearly ended modern warming period.

It is not overdue.It is dependent on the Milankovitch cycle.Which varies from one interglacial to another.It also varies during the glacial part of the cycle too.

There is a nice book available as a download from either Amazon or Lulu.

Amazon has the print version as well.

If you do not have a Kindle.You can download a FREE application.Then you can read a "Kindle" book on your computer or other devices instead.

The book.The Inconvenient Skeptic.Does two main things,

1) It discusses the Milankovitch cycle and how it effects the Earths climate.It THE long term climate cycle.That we need to be educated on.

2) Discusses the evidence that indicate that CO2 is a non player in the energy budget.He effectively shows why CO2 can not be a climate driver.He does it from a different angle than one usually considered.

Worth the buy!

It is less than $7 American dollars for electronic download.I did mine with the Kindle I own.It took less than 15 seconds once download started.To get the whole book.

WE have been stuck with short climate cycles arguments to miss the most significant one.The one that DOMINATES the climate cycle.

The Milankovitch Cycle.