Second year above 1.5c is looking possible

[Shareprofit]

Well, that certainly explains the climate change of the past 25 years which is only 0.0000000055% of the history of climate change going on with the Earth.

Now if only you could explain why we still had climate change the other 99.999999994% of the history of the Earth long before man started burning fossil fuels!

Global temp has increased by about 1C in the past 200 years when was the last time temp changed that fast?
You deniers are so unhinged and boring telling me that temp has always changed, I KNOW THAT but over tens of thousands of years not decades as is happening now. Out of interest were you home schooled?

 

[westwall]

Climate change is caused by the combustion of fossil fuels not making plastics, health care etc. This CC thing is not difficult to understand. Try!

Climate change is caused by the SUN.

 

[westwall]

Global temp has increased by about 1C in the past 200 years when was the last time temp changed that fast?
You deniers are so unhinged and boring telling me that temp has always changed, I KNOW THAT but over tens of thousands of years not decades as is happening now. Out of interest were you home schooled?

The last time the Earth was recovering from a cold phase. We are still recovering from the Little Ice Age.

 

[CrusaderFrank]

China burns more coal than the rest of the world combined.

My only problem is that they're funding the AGW Hysteria and have convinced a few people that AGW is a "thing"

 

[ding]

No, the glaciation events are slow, and while the deglaciation events are much faster, they are still far slower than the changes we are seeing right now due to AGW.

View attachment 1115894

That doesn't look GRADUAL to me. That looks abrupt.

 

[ding]

they are still far slower than the changes we are seeing right now due to AGW.

Not even close. Glacial events, specifically abrupt Dansgaard-Oeschger (DO) events during glacial periods, are known for their abrupt nature. These events involve rapid warming, sometimes by 46 degrees Fahrenheit over a few decades, followed by a more gradual cooling.

https://www.aaas.org/news/data-reveal-synchronous-abrupt-climate-events-last-glacial-cycle#:~:text=The%20climate%20records%20from%20Greenland's,Earth%20system%2Dwide%20climate%20mechanisms.

 

[ding]

Global temp has increased by about 1C in the past 200 years when was the last time temp changed that fast?
You deniers are so unhinged and boring telling me that temp has always changed, I KNOW THAT but over tens of thousands of years not decades as is happening now. Out of interest were you home schooled?

D-O events were much faster and much more severe.

 

[ding]

Out of interest were you home schooled?

I've got an engineering degree. You?

 

[ding]

Climate change is caused by the combustion of fossil fuels not making plastics, health care etc. This CC thing is not difficult to understand. Try!

For the past 3 million years the climate of the planet has been dominated by the northern hemisphere.

When the northern hemisphere glaciates, the oceans and atmosphere cool. When the northern hemisphere deglaciates - like it is doing today - the oceans and atmosphere warm.

Snapshots of mean ocean temperature over the last 700 000 years using noble gases in the EPICA Dome C ice core

Abstract. Together with the latent heat stored in glacial ice sheets, the ocean heat uptake carries the lion's share of glacial–interglacial changes in the planetary heat content, but little direct information on the global mean ocean temperature (MOT) is available to constrain the ocean...

cp.copernicus.org

The reason for this is that the north pole has a lower temperature threshold for glaciation than the south pole because the south pole has a continent parked over it while the north pole is thermally isolated from warm marine currents by surrounding lands.

You can see with your own eyes the different temperature threshold for glaciation for the poles in the oxygen isotope curve which is the temperature record for the planet.

So for the past 15 million years or so, the south pole has had a continuous ice cap. And for the past 3 million years the north pole has oscillated between having an ice cap and not having an ice cap.

The reason why the northern hemisphere effects global temperatures is because there are surrounding lands where glaciation can spread. Whereas the land sitting over the south pole is surrounded by ocean so glaciation cannot spread like it does in the north. So southern hemisphere glaciation is moderated by the ocean whereas northern hemisphere glaciation isn't.

So why has the northern hemisphere cycled between glaciating and deglaciating? Thermohaline circulation. When heat transport from the Atlantic to the Arctic gets disrupted, the northern hemisphere glaciates. And when heat is transported from the Atlantic to the Arctic - like it is doing today - the northern hemisphere deglaciates.

Now what were you saying about dumb Americans?

 

[Toddsterpatriot]

Global temp has increased by about 1C in the past 200 years when was the last time temp changed that fast?
You deniers are so unhinged and boring telling me that temp has always changed, I KNOW THAT but over tens of thousands of years not decades as is happening now. Out of interest were you home schooled?

Global temp has increased by about 1C in the past 200 years when was the last time temp changed that fast?

That is a great question!
Why don't you post the temperature change over all the other 200-year periods in the last million years, so we can check?

 

[toobfreak]

Global temp has increased by about 1C in the past 200 years

Really? What was man doing in 1825 to cause global climate change, genius?

when was the last time temp changed that fast?

Well, let's start with the Paleocene–Eocene Thermal Maximum (PETM) that occurred about 50 million years ago when temperatures rose far more, faster, causing a near extinction of life on the planet for starters.

You deniers are so unhinged and boring

Maybe if you actually knew what you were talking about enough to prove your case to others, I might believe you.

 

[Sunsettommy]

LOL Once again proving your willful ignorance. The warming has been going on since the start of the industrial revolution. When, by the Milankovitch Cycles, we should be gradually cooling.

Once again you made a lie as I never disputed a warming trend and the CURRENT warming began in about 1979, it was cooling from the early 1940's to the late 1970's.

It has been cooling over all for the last 3,300 years now since the Minoan Peak.

LINK

There is a 900-1,100 year peak to peak warming cycle and we are at the peak of this current cycle which suggest that soon within decades will see a sharp cooling into the next cold period..

 

[toobfreak]

It has been cooling over all for the last 3,300 years now since the Minoan Peak. There is a 900-1,100 year peak to peak warming cycle

Interesting, a few observations about your chart:

1. Nothing new, but the data indicates that we have been in an abnormal cool period for a long time and are just coming out of it to return back to historic normal levels. That is not fluke warming, but an obviously normal process if it happens regularly long before mankind came on the scene.
2. The data also indicates a recent rise in CO2 of about 100 PPM. That is a rise of CO2 content in the atmosphere approx. equal to 1/10,000th the total volume of air. If a weak GHG were indeed potent enough to go from being just 0.025% of the atmosphere to a whopping 0.037% (my figures) to effect a warming of the planet and melting of all ice in so short a time, then we would see a high degree of correlation tracking between CO2 and planetary temps over the eons, but we don't.

 

[ReinyDays]

OK

What Are the Milankovitch Cycles?

The Milankovitch Cycles describe how the tilt of the Earth, the shape of its orbit and where its axis is pointing collectively influence climate.

www.livescience.com

Ummm ... that link doesn't explain changes in irradiation ... neither obliquity nor axial precession changes Earth cross-sectional area ... thus irradiation and temperatures remain the same ...

Nope ... sorry .. that link doesn't contain any math ... allow me to repeat myself:

1] Would you please explain how obliquity effects average Earth surface temperatures? ... what gain in summer is lost in winter, the annual average temperature would be the same ...

2] When calculating the effect of eccentricity, what value are you using for the orbit's semi-major axis and what is the difference in distance ...

... and show your math ...

More crickets ...

For extra credit ... 3a] explain how a 100,000-year cycle causes a 125,000-year cycle ... and 3b] what's the name for the opposite of correlation? ...

 

[ReinyDays]

Really? What was man doing in 1825 to cause global climate change, genius?

... brewing beer ...

 

[Shareprofit]

Climate change is caused by the SUN.

It's cause by increasing amounts of CO2, CH4 and N20 that absorb long wave heat radiation. Best you sit this out pal.

 

[Shareprofit]

Really? What was man doing in 1825 to cause global climate change, genius?


Well, let's start with the Paleocene–Eocene Thermal Maximum (PETM) that occurred about 50 million years ago when temperatures rose far more, faster, causing a near extinction of life on the planet for starters.


Maybe if you actually knew what you were talking about enough to prove your case to others, I might believe you.

It started in the 19th century with the beginning of the industrial revolution. Massive amounts of coal were being burnt to fuel factories. At the time Americans were still killing Indians so you must have missed it.

Really? What was man doing in 1825 to cause global climate change, genius?


Well, let's start with the Paleocene–Eocene Thermal Maximum (PETM) that occurred about 50 million years ago when temperatures rose far more, faster, causing a near extinction of life on the planet for starters.


Maybe if you actually knew what you were talking about enough to prove your case to others, I might believe you.

It's been proven many times, the fact that you don't understand the proof for Global warming doesn't make it any less relevant.

 

[Shareprofit]

Global temp has increased by about 1C in the past 200 years when was the last time temp changed that fast?

That is a great question!
Why don't you post the temperature change over all the other 200-year periods in the last million years, so we can check?

There is no evidence that global warming has ever occurred so quickly before. Right now it is still increasing because of the excess of CO2, CH4 and N20 gasses emitted by man.

 

[Sunsettommy]

There is no evidence that global warming has ever occurred so quickly before. Right now it is still increasing because of the excess of CO2, CH4 and N20 gasses emitted by man.

LOL, you didn't prove the information he requested and you are LYING anyway as the rate of warming is similar to previous warming rates back to the 1800's.

 

[Sunsettommy]

It's cause by increasing amounts of CO2, CH4 and N20 that absorb long wave heat radiation. Best you sit this out pal.

CH4 has a negligible absorption range which is far away from the main terrestrial outgoing IR bands while CO2 is mostly saturated at the 430 ppm level thus little Warm Forcing left to be had from 280 ppm to 560 ppm (the doubling rate) is about an increase of 3.7 W/m2 trivial against the total global average downwelling,