When was the last time CO2 levels were as high as today?

[Old Rocks]

As techniques improve, we are finding more ways to study the past climate history of our planet in detail. The following site has far more information than just what is in the post.

Science: CO2 levels haven’t been this high for 15 million years, when it was 5° to 10°F warmer and seas were 75 to 120 feet higher — “We have shown that this dramatic rise in sea level is associated with an increase in CO2 levels


Tripati, before joining UCLA’s faculty, was part of a research team at England’s University of Cambridge that developed a new technique to assess carbon dioxide levels in the much more distant past — by studying the ratio of the chemical element boron to calcium in the shells of ancient single-celled marine algae. Tripati has now used this method to determine the amount of carbon dioxide in Earth’s atmosphere as far back as 20 million years ago.

“We are able, for the first time, to accurately reproduce the ice-core record for the last 800,000 years — the record of atmospheric C02 based on measurements of carbon dioxide in gas bubbles in ice,” Tripati said. “This suggests that the technique we are using is valid.

“We then applied this technique to study the history of carbon dioxide from 800,000 years ago to 20 million years ago,” she said. “We report evidence for a very close coupling between carbon dioxide levels and climate. When there is evidence for the growth of a large ice sheet on Antarctica or on Greenland or the growth of sea ice in the Arctic Ocean, we see evidence for a dramatic change in carbon dioxide levels over the last 20 million years.

“A slightly shocking finding,” Tripati said, “is that the only time in the last 20 million years that we find evidence for carbon dioxide levels similar to the modern level of 387 parts per million was 15 to 20 million years ago, when the planet was dramatically different.”

Levels of carbon dioxide have varied only between 180 and 300 parts per million over the last 800,000 years — until recent decades, said Tripati, who is also a member of UCLA’s Institute of Geophysics and Planetary Physics. It has been known that modern-day levels of carbon dioxide are unprecedented over the last 800,000 years, but the finding that modern levels have not been reached in the last 15 million years is new.

 

[Si modo]

Keep it up, Rocks. My chances of making a killing in ocean-side property keep getting better and better.

 

[CrusaderFrank]

What created Long Island Sound? When?

 

[AllieBaba]

So we all agree that high levels of CO2 won't kill off the planet, and is produced primarily by vegetation.

 

[Old Rocks]

What created Long Island Sound? When?

You are incapable of useing Google?

 

[Old Rocks]

So we all agree that high levels of CO2 won't kill off the planet,

How high? See Venus.



and is produced primarily by vegetation.

CO2 is produced by vegitation? Better take a basic biology class, old girl.

 

[CrusaderFrank]

What created Long Island Sound? When?

You are incapable of useing Google?

"Glacial history

About 18,000 years ago, Connecticut, Long Island Sound, and much of Long Island were covered by a thick sheet of ice, part of the Late Wisconsin Glacier. About 3,300 feet (1,000 m) thick in its interior and about 1,300 to 1,600 feet (400 to 500 m) thick along its southern edge, it was the most recent of a series of glaciations that covered the area during the past 10 million years. Sea level at that time was about 330 feet (100 m) lower than today.[1]"

Long Island Sound - Wikipedia, the free encyclopedia

Why did the glaciers retreat 18,000 years ago, Sparky?

 

[Old Rocks]

Milankovic Cycles.

 

[Zander]

Co2 is at an ll time high, yet the planet is cooling. Yep, makes perfect sense, to morons.

You globull warming bed wetters are really silly!

 

[Chris]

Co2 is at an ll time high, yet the planet is cooling. Yep, makes perfect sense, to morons.

You globull warming bed wetters are really silly!

No you are silly.

The arctic ice is melting even though the Sun is at its lowest level of activity in 80 years.

Why?

 

[Oddball]

Looks like the GlobalClimateCoolerWarming kooks didn't get the memo that the "scientists" have been manipulating the data for years.

 

[Chris]

Looks like the GlobalClimateCoolerWarming kooks didn't get the memo that the "scientists" have been manipulating the data for years.

Looks like the right wing nut kooks didn't get the memo that the poles and the glaciers are melting.

 

[Oddball]

If they are, there's not a goddamn thing you can do about it, no matter how much you twist and outright lie about the data.

 

[mdn2000]

Here is a link to one source showing that Old Crock posted an old article that is irrelevant.

http://www.osti.gov/geothermal/servlets/purl/895237-Vp8ett/895237.pdf

The zinc recovery project was put online in 2002,
but was shut down in 2004 due to technical problems

In 2002, a zinc-extraction plant was completed in the
Imperial Valley of California. It used electricity from
geothermal power plants for the recovery of metal from
geothermal brines (Clutter, 2000). The $400-million zinc
project by MidAmerican Energy Holding Co. was supposed
to extract 30,000 tonnes of zinc annually. The wastewater
from eight power plants, having 600 ppm of zinc was
utilized. Unfortunately, the plant, which ran until 2004,
produced less than 50% of capacity and lost $69 million on
the project (GRC, 2004d). It is now shut down and being
dismantled due to poor economics and technical problems.
MidAmerican is now looking at silica extraction.

There are more problems with the unreliable Geothermal energy, imagine a geothermal power plant producing such a tiny amount of power having an uncontollable event. The uncontrollable event was the brine eating through a 48" pipe until it literally explodes spilling toxic brine all over the imperial valley's Asparagus fields.

On July 10, 2003, the Salton Sea IV Project’s 40 megawatt turbine went out of service due to an uncontrollable force event.
Such uncontrollable force event ended, and the Salton Sea IV Project’s turbine returned to service, on September 17, 2003.
Edison failed to recognize the uncontrollable force event and, as such, has not paid amounts otherwise due and owing under
the Salton Sea IV power purchase agreement totaling $2.5 million. Salton Sea Power Generation, L.P., with Fish Lake Power
LLC, owner of the Salton Sea IV Project, served notices of error on Edison for such unpaid amounts

So from a "win, win" to a multi-million dollar loss, Old Crock I must say if you prove anything its that Green Energy is too expensive.

Hey, check out the amount of time this power plant was down, Old Crock you did not calculate this time into your costs either. Looks to me that Geothermal is too expensive and unreliable.

Now how about how much energy and what types does it take to produce one ton of fiberglass.

Dry ice is pure CO2

 

[mdn2000]

CO2, how much is used when the twins Old Crock and Chrissy post useless links, perform irrelevant google searches, and repost the same thread with another title.

 

[mdn2000]

CO2, how much is used when the twins Old Crock and Chrissy post useless links, perform irrelevant google searches, and repost the same thread with another title.

 

[AllieBaba]

So we all agree that high levels of CO2 won't kill off the planet,

How high? See Venus.



and is produced primarily by vegetation.

CO2 is produced by vegitation? Better take a basic biology class, old girl.

Perhaps you should. I'm willing to give you lessons, if you're willing to pay, moron:

"Now on the land mass are the natural vegetations that create CO2. More land mass equalls more vegetation. More CO2 is created When the sun is directly giving light to the vegetation. Half of the year the sun is more directly over the norther hem. therefore making the larger amount of vegetation give off more CO2. When the other half of the year rolls around the sun concentrates on the lower half of the earth. This in turn gives off less CO2."
WikiAnswers - Why does carbon dioxide concentration vary in seasons

What a tard you are. Go back to junior high biology class and start there. When you've accumulated the amount of knowledge that most 9th graders have, I'll be willing to teach you some of the finer points of earth science.

 

[RetiredGySgt]

Scientific fact remains, temperature does not follow rising CO2 levels, Temperature precedes it. That is a fact and a scientific one.

 

[Oddball]

So we all agree that high levels of CO2 won't kill off the planet,

How high? See Venus.



and is produced primarily by vegetation.

CO2 is produced by vegitation? Better take a basic biology class, old girl.

It's given off when that vegetation decays....Or maybe you cut biology class the day they discussed the life cycle.

 

[Si modo]

So we all agree that high levels of CO2 won't kill off the planet,

How high? See Venus.



and is produced primarily by vegetation.

CO2 is produced by vegitation? Better take a basic biology class, old girl.

It's given off when that vegetation decays....Or maybe you cut biology class the day they discussed the life cycle.

Yes. And when adequate light is not available, aerobic cellular respiration will occur. In general, the amount of CO2 expelled during this process in plants is consumed, and then some, during photosynthesis. So, most often it is less than zero sum during the plant life cycle.