Earth's Climate History: What the Doomsayers Don't Want Voters to Know

American Thinker.com ^ | January 19, 2020 | John Eidson

[fireman15]

\ The graph has temperature leasing CO2 for the most part. You have to read from right to left, since the past is to the right.

You are correct. Whoever made up the chart set it up chronologically the opposite of what one typically expects. My apologies.

[palmer]

I agree there was a global Medieval Warm Period. The revisionists claim that it was local, e.g. northern Europe only. They do the same thing with the Little Ice Age. But assuming that MWP was global and about 1C or so, that would result in a total of 5-10 ppm rise in CO2 with many centuries of lag. That means about 5-10 ppm of the recent/current rise in CO2 comes from the MWP.

But the current rise is 2-3 ppm per year. That means it has a different source than the MWP, or in other words, only a small portion of that 2-3 ppm per year is a lagging effect of the MWP.

[Hojczyk]

The earliest fossils of anatomically modern humans are from the Middle Paleolithic, about 200,000 years ago such as the Omo remains of Ethiopia, the fossils of Herto sometimes classified as Homo sapiens idaltu also from Ethiopia.

We only have 11 years left...RIGHT

[bitt]

p

[Don W]

You may have misread the chart, as the chart flows left to right:today to 450000 years ago. Temperature *IS* leading CO2

[fireman15]

It is hard to keep the big picture in mind when misinformation is flooding in from all around. It was much warmer than it is now during both the Medieval Warm period and the Roman Warm Period from approximately 250 BC to 400 AD. 1 degree C does not cut the mustard when grapes were being grown in Northern England and there were crops being grown in Greenland and Iceland that cannot be grown there even now. On a shorter time scale, there is overwhelming evidence that it was warmer in the 1930s than it is now.

As far as CO2 goes... it has been multiple times greater in previous time periods with none of the predicted end of the world scenarios taking place. The truly scary threat to life on this planet occurs not in warm times with abundant CO2 but during cold periods when CO2 has been depleted to the point where it has threatened the health of plant life.

[palmer]

Yes, I did.

[palmer]

there is overwhelming evidence that it was warmer in the 1930s than it is now.

For North America certainly. The global data from the 30's is very poor. But the summer heat records from the 1930's still stand for much of the US and Canada.

However one often overlook fact is that there also cold records from the 1930's. Some summers were hot but some winters were cold.

For earlier periods you are correct. There is no way that Greenland can have farming for centuries while the rest of the world is colder. There is simply no pattern than can create that effect for more than a short period, a few years at most. Greenland temperatures for the Medieval warming, Roman warming and prior warming are a valid proxy for global temperatures.

[Reeses]

Epic dust storms in the 1930s caused catastrophic ecological damage to the Central Plains of the U.S. and Canada.

That was caused by bad farming practices. Is there any serious dispute about that? Humans can cause both good and bad environmental effects, and can reverse them if it becomes necessary.

[kennedy]

In October 2018, we lost our home and most of our belongings in a flood. I have had friends from around the country suggest that this is proof of Global Warming.

Over 80 years before, in 1936, my grandparents lost their home and all of their belongings in a flood. Before their home washed down the Colorado River, it was located about 50 feet from where ours is located now.

This is not Global Warming. It is called weather. Sometimes the weather is bad. Sometimes the weather is very bad. I have long described Central Texas weather as a series of droughts separated by floods.

This has always been and always will be the nature of weather. I am really tired of every bad weather event being attributed to Global Warming.

[Vince Ferrer]

That was caused by bad farming practices. Is there any serious dispute about that?

It was mostly caused by bad farming, but I would also add that the rocky mountains and great plains were probably a wasteland during the last ice age, and the area is gradually recovering due to the added CO2 in the atmosphere. It was easier to cause the dust storms in the 1930s than it is today.

[Farmerbob]

The farmers caused the drought?

[mosesdapoet]

Earth Enters Unknown as Magnetic North Pole Continues Push Toward Russia, Crosses Greenwich Meridian
Sputniknews.com ^ | 15:08 13.12.2019 (updated 15:42 13.12.2019) | Staff
posted in the Free Republic Aggregate conservative news site
http://www.freerepublic.com/focus/f-chat/3800727/posts
Posted on 12/13/2019, 4:22:18 PM by Red Badger

Earlier this year, US National Oceanic and Atmospheric Administration and the British Geological Survey (BGS) were forced to update the World Magnetic Model a year ahead of schedule due to the speed with which the magnetic north pole is shifting out of the Canadian Arctic and toward Russia’s Siberia.

Deep solar minimum on the verge of an historic milestone
wattsupwiththat.com ^ | December 12, 2019 | by Paul Dorian

Posted on 12/13/2019, 3:17:04 PM by Red Badger Posted in the Free Republic aggregate news site http://www.freerepublic.com/focus/f-chat/3800719/posts

Solar minimum is a normal part of the 11-year sunspot cycle, but the last one and the current one have been far deeper than most. One of the consequences of a solar minimum is a reduction of solar storms and another is the intensification of cosmic rays. The just ended solar cycle 24 turned out to be one of the weakest in more than a century – continuing a weakening trend that began in the 1980’s – and, if the latest forecasts are correct, the next solar cycle will be the weakest in more than 200 years.

One of the natural impacts of decreasing solar activity is the weakening of the ambient solar wind and its magnetic field which, in turn, allows more and more cosmic rays to penetrate the solar system. Galactic cosmic rays are high-energy particles originating from outside the solar system that can impact the Earth’s atmosphere. Our first line of defense from cosmic rays comes from the sun as its magnetic field and the solar wind combine to create a ‘shield’ that fends off cosmic rays attempting to enter the solar system. The shielding action of the sun is strongest during solar maximum and weakest during solar minimum with the weakening magnetic field and solar wind. The intensity of cosmic rays varies globally by about 15% over a solar cycle because of changes in the strength of the solar wind, which carries a weak magnetic field into the heliosphere, partially shielding Earth from low-energy galactic charged particles.

NEWLY PUBLISHED SCIENTIFIC PAPER TEARS GLOBAL WARMING AND THE IPCC TO SHREDS
Electro verse.net ^ | Dec 11, 2019

Posted on 12/17/2019, 4:54:46 PM by 11th_VA

http://www.freerepublic/com/focus/f-news/3801618/posts

A scientific paper entitled “An Overview of Scientific Debate of Global Warming and Climate Change” has recently come out of the University of Karachi, Pakistan. The paper’s author, Prof. Shamshad Akhtar delves into earth’s natural temperature variations of the past 1000 years, and concludes that any modern warming trend has been hijacked by political & environmental agendas, and that the science (tackled below) has been long-ignored and at times deliberately manipulated.

... Pro human induced global warming scientists exaggerate the contribution of carbon dioxide as a major greenhouse gas in absorbing long wave earth’s radiation. The fact is water vapor is the single largest atmospheric greenhouse gas (2% by volume), Carbon dioxide is second (0.0385% by volume).

Water vapor contributes 95% to the greenhouse effect, all other greenhouse gases combined contribute only 5%. Furthermore, the man-made portion of carbon dioxide contributes only 0.117% to the greenhouse effect.

The IPCC does not consider water vapor a greenhouse gas in its reports.

In addition, water vapor absorbs in a much wider band of long wave radiation (4-8 micrometer and 12-70 micrometer bands), whereas Carbon dioxide absorbs in narrow bands (13-16 micrometer) and ozone absorbs in a much smaller narrow band (9-10 micrometer). Thus, water vapor absorbs in a much wider wave length band, it has the single largest greenhouse effect among all the greenhouse gases

[JeanLM]

The earth is 78 % covered by water. The temperature of the land mass is certainly affected by that fact. Clouds are much more of a green house influence than CO2 which is less than Argon in the atmosphere. Anyone know what creates more cloud formation? Where’s that fit in the models?

[Grampa Dave]