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http://nsidc.org/arcticseaicenews/charctic-interactive-sea-ice-graph/ As you can see from this graph, September 16, 2012 was the all time record low for arctic sea ice extent. Since then the trend has been up.
There is always a bit of noise due to other variables.
Always some noise.
So what are these other variables?
So what are these other variables?
Why do we have to discuss such obvious facts as the whether changes and is not the same everywhere?
So what are these other variables?
There are too many to list.
I see from our chart that the minimum arctic sea ice extent trend has been completely flat over the last decade.
the data is so clear and convincing that the Earth is warming.
Life was flourishing like crazy. Mammals up the ass.
- Why and how are most scientists in 200 countries and over several decades agreeing to lie about this particular subject?
What other theory do you have that fully explains all observations including melting ice, increasing temps, the distribution of this increase over the planet, etc....?
- Why isn't the added CO2 not producing the greenhouse effect that is expected to occur
Exactly! Co2 is a small variable. Manmade co2 is an even smaller climate variable.
Do you dispute that the Earth is warming then?
The earth is warming but not enough. I fear more cold is coming.
Would you rather live on a frozen tundra or a tropical rain forest?
Realizing that if the proxies have an MOE of temperature just 2-3% off it changes everything. A Degree Celsius easily vanishes.
Try putting a small amount of cyanide in your food. Or a small amount of phosgene in the air you breathe.
As always, we should be talking about population control and ban private vehicles.
Onvacation--
Do you dispute that the Earth is warming then?
In order to find warming, one has to start his trend line either
1. in 1850, as the Little Ice Age came to an end, or (that's what Hansen did when he testified before Congress)
2. in 1970. when the smaller warming/cooling cycle has exited the cooling phase and entered the warming phase.
CO2 would have to be 5% of the atmosphere before harmful effects were felt by humans.
They don't want to show the Permian, Triassic, Devonian etc. Eras when estimated CO2 was running north of 1000ppm (almost 4000ppm in some eras!!!) but life was absolutely abundant.
But the warming and sea rise is NOT exponential as the alarmists predicted.
Now, can you answer how the worldwide average temp increase of 4/100 of one degree between 2016 and 2017 can even be measured?
Are we comparing real data to proxies?
CO2 would have to be 5% of the atmosphere before harmful effects were felt by humans.
As always, we should be talking about population control and ban private vehicles.
Let's remember the "average Global" temperature has risen by about 1F in an entire century. There is no static Earth. We do not have direct measurements prior to 1900, and frankly the measuring tools were far more primitive and imprecise in the 19th Century than today. A dollar store thermometer is more accurate today than a handcrafted one costing a princely sum that some Wealthy Royal Society Lord would have used.
Joey, firstly, florists regularly inject CO2 into the greenhouses at the level of 1200 - 1600ppm to spur growth of the plants. Does that sound harmful to yo-u?
Second, CO2 levels can rise in the 1200- 2000 ppm levels in a closed meeting room? How many people do yo-u know have died during meetings?
There may not be enough fossil fuel reserves to get to 5% CO2
Heraclitusstudent says- Why and how are most scientists in 200 countries and over several decades agreeing to lie about this particular subject?
Mostly politicians lie. Although 97% of scientists that believe in CAGW do believe that mans co2 is making earth warmer.
Well, the entire thesis is that man-made CO2 is affecting global ecosystem. The amount of CO2 has risen sharply over the last century so it makes sense to look at this time period.
First, CO2 started rising sharply in late 1940s (after WW2) -- not in 1850s, and not in 1970s
Sniper saysSecond, CO2 levels can rise in the 1200- 2000 ppm levels in a closed meeting room? How many people do yo-u know have died during meetings?
You guys are funny. I'll give you that.
Why?????
Heraclitusstudent saysWhat other theory do you have that fully explains all observations including melting ice, increasing temps, the distribution of this increase over the planet, etc....?
The natural variation in earths orbit and the suns output.
The amount of CO2 has risen sharply over the last century so it makes sense to look at this time period.
I'll take a high school dropout redneck's opinion that he generates off the top of his head over the opinion of one of those ivory tower fancy pants scientists any day. All opinions are equally valid.
Trump will confirm this. We're officially an Idiocracy.
Onvacation saysNow, can you answer how the worldwide average temp increase of 4/100 of one degree between 2016 and 2017 can even be measured?
So really what your argument is here is that you can find a short term period where the increase was small. You're arguments are beyond weak.
They took reading at hundreds (or thousands) of locations and calculated the average increase.
Yeah well but birth rates are collapsing over the planet (most increase of population that are planned are from people living older), and electric vehicles are on their way to become soon cheaper than gas ones.
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How much has the temp and sea level risen in the last hundred years?
How much did the temp rise between 2015 (2nd hottest year) and 2016 ( hottest year EVER)?
How can they measure such a small increase over the entire globe?
If the earth is warming why is the hottest temp ever recorded over a century old?
What is the ideal temp for human habitation?
Still waiting for answers to these important questions.