Racmanaz Loc: Sunny Tucson!

Hey! I'm logical and open minded, I can be convinced with evidence. :)

"Climate change is progressing rapidly. It is not the first time in our planet's history that temperatures have been rising, but it is happening much faster now than it ever has before. Or is it? Researchers at Friedrich-Alexander-Universität Erlangen-Nürnberg have shown in the latest edition of the journal Nature Communications that the temperature changes millions of years ago probably happened no more slowly than they are happening today."

In order to predict how today's ecosystems will react to increasing temperatures over the course of global warming, palaeobiologists study how climate change happened in the earth's history and what the consequences were. In order to compare the events of the past with current changes researchers need data on the scope of the changes. What was the speed with which temperatures increased or decreased? What was the magnitude of the change in temperatures? Until now, the general consensus has been that current climate change is happening more quickly than any previous temperature fluctuations.

Climate change in the earth's past faster than previously thought

Together with a British colleagues, palaeobiologist Prof. Dr. Wolfgang Kießling and geosciences student Kilian Eichenseer, both from FAU, have published a pioneering study in Nature Communications explaining that the idea that environmental changes in the earth's past happened slowly in comparison to current, rapid climate change is wrong. The reason for this incorrect assumption is the different time periods that are examined in climate research. 'Today we can measure the smallest fluctuations in climate whenever they occur,' Kilian Eichenseer explains. 'Yet when we look at geological history we're lucky if we can determine a change in climate over a period of ten thousand years.'

Therefore, if we compare global warming over recent decades with the increase in temperature that happened 250 million years ago over the Permian-Triassic boundary, current climate change seems incredibly fast. Between 1960 and 2010, the temperature of the oceans rose at a rate of 0.007 degrees per year. 'That doesn't seem like much,' Prof. Kießling says, 'but it's 42 times faster than the temperature increase that we are able to measure over the Permian-Triassic boundary. Back then the temperature of the oceans rose by 10 degrees, but as we are only able to limit the period to 60,000 years, this equates to a seemingly low rate of 0.00017 degrees per year.'

Rapid changes are invisible, not absent

In their study the researchers looked at around two hundred analyses of changes in climate from various periods in geological history. It became clear that the apparent speed of climate change appears slower the longer the time periods over which increases or decreases in temperature are observed. The reason for this is that over long periods rapid changes in climate do not happen constantly in one direction. There are always phases during which the temperatures remain constant or even sink—a phenomenon that has also been observed in the current period of global warming. 'However, we are unable to prove such fast fluctuations during past periods of climate change with the available methods of analysis.

As a consequence, the data leads us to believe that climate change was always much slower in geological history than it is today, even when the greatest catastrophes occurred. However, that is not the case,' Prof. Kießling says. If we consider these scaling effects, the temperate increase over the Permian-Triassic boundary was no different to current climate change in terms of speed. The increase in temperature during this event is associated with a mass extinction event during which 90 percent of marine animals died out.

https://phys.org/news/2015-11-global-fast-today.html

kymarto Loc: Portland OR and Milan Italy

"If we consider these scaling effects, the temperate increase over the Permian-Triassic boundary was no different to current climate change in terms of speed. The increase in temperature during this event is associated with a mass extinction event during which 90 percent of marine animals died out."

This last sentence is most important. There is a clearly demonstrated link between greenhouse gases and increasing surface temperatures. Even if there are non-anthropogenic factors causing temperatures to rise, anything we can do to limit the rise is crucial. 90% extinction rate is not trivial.

Racmanaz Loc: Sunny Tucson!

That maybe true, you are missing the point of my post which is exposing the lie that the climate is changing faster than any time before.

kymarto Loc: Portland OR and Milan Italy

It has nothing to do with lying, it has to do with scientific progress. This is a newly published paper proposing a new mechanism of analyzing the climate record. Nor is there any confirmation of what they propose, just a new method of analyzing the data. And not to forget the conclusuon:

"Our work doesn't impact on how quickly climate is changing today, but instead it emphasises how the geological record is an imperfect archive of ancient climate behaviour," explained Kilian Eichenseer, a graduate student on the study team. "Reliably comparing and contrasting ancient and modern climate change is therefore problematic."

He added: "While there is little doubt that the current rate of climate change is unusual and something that causes understandable concern, caution should be exercised when describing modern changes as unprecedented in the context of Earth's history, since this doesn't take into account the clear bias that complicates the assessment of ancient rates of climate change."

Racmanaz Loc: Sunny Tucson!

Yes it actually does have to do with lying and deception to push that liberal agenda. Most people who actually read and understand scientific facts knew that this warming stage was no different than the highest warming stages of the past. To say that Earth has never experienced global warming at this fast rate is just pure propaganda and lies.

kymarto Loc: Portland OR and Milan Italy

Absolute vile bullshit. People who really understand science can clearly read that the mechanism newly identified, if true, hid possible rapid temperature changes. This is newly proposed, and is still only a hypothesis upon which now more investigation will be done. It only casts doubt about the way the climate record has heretofore been measured.

Racmanaz Loc: Sunny Tucson!

Wrong again, science has already proved that this is not the fastest warming period in this Earth's history. Just more of the same Leftard indoctrination BS propaganda.

kymarto Loc: Portland OR and Milan Italy

My God are you thick. Where and when has science proved that? Links man, not blowing hot air. I'll wait.

gorgehiker Loc: Lexington, Ky

The article you cited was written in 2015. It is of no relevance today because scientists now have 7 more years of established data on which to base their conclusions. To understand what is happening today, I suggest you read and cite more current articles.

Racmanaz Loc: Sunny Tucson!

You have a strong stance for your position as I do with my so why am I pick? Aren't you thick headed as well?

kymarto Loc: Portland OR and Milan Italy

Because you do not understand science and how it works. The only thing you can think of is how to bash those you don't agree with, and you can't even do that well. If that article is seven years old (I'm also thick, I didn't even check) then scientists have had plenty of time to come up with further data. You claim that science has shown that there is evidence that in the past there were periods of more rapid warming. Where is the science? Put up or shut up.

kymarto Loc: Portland OR and Milan Italy

I did National Science Foundation scholarships while still in high school assisting in University research in plant physiology and oceanography, and was director of a radiation biology laboratory pilot project for the LA city schools. I know what science is and how it works. Where is the data? Put up or shut up.

Racmanaz Loc: Sunny Tucson!

I applaud your education, yet you are still clueless. Heck, it's even a known fact that Mars and many other planets are warming up as well. It's the sun stupid.

kymarto Loc: Portland OR and Milan Italy

Data? The foundation of science is data. Where are the numbers?

kymarto Loc: Portland OR and Milan Italy