Slashdot Mirror
Global Warming Started 180 Years Ago Near Beginning of Industrial Revolution, Says Study (smh.com.au)
New research led by scientists at the Australian National University's Research School of Earth suggests that humans first started to significantly change the climate in the 1830s, near the beginning of the Industrial Revolution. The findings have been published in the journal Nature, and "were based on natural records of climate variation in the world's oceans and continents, including those found in corals, ice cores, tree rings and the changing chemistry of stalagmites in caves." Sydney Morning Herald reports: "Nerilie Abram, another of the lead authors and an associate professor at the Australian National University's Research School of Earth Sciences, said greenhouse gas levels rose from about 280 parts per million in the 1830s to about 295 ppm by the end of that century. They now exceed 400 ppm. Understanding how humans were already altering the composition of the atmosphere through the 19th century means the warming is closer to the 1.5 to 2 degrees target agreed at last year's Paris climate summit than most people realize." "It was one of those moments where science really surprised us," says Abram. "But the results were clear. The climate warming we are witnessing today started about 180 years ago."
The deniers do not care, they will be dead before the worst hits. As long as they can live high on the hog on their imaginary money until they die, they are happy. There is not one drop of concern for the future of humanity or life on earth in general.
...even before humans had any significant CO2 output.
Good to know. I'm sure someone out there will find some magical particle humans were emitting in the 1800s at a certain level that didn't scale with the massive growth in population of humanity.
Yeah, I don't know why Slashdot attracts these anti-science nutters that cannot understand the data has been totally blown on the whole global warming scam. Yes some warming is occurring, but not enough to matter in any way worth even getting excited about - at least that's what the hard facts and careful research tell us. Heck it's probably not even enough to counteract the next global cooling phase which is close at hand even in human turns, then will be the time to panic...
Now the soft facts and panicked revelations made by so called "scientists" who are backed by governments trying to bilk the people into more central control - isn't it astounding that after literally decades of being utterly wrong about long term climate forecasts, people still listen to them? But then I guess it's not since other religions have been around thousands of years as well.
"There is more worth loving than we have strength to love." - Brian Jay Stanley
The Jurassic period. O2 in atmosphere was 130% modern levels. CO2 was at 1950ppm, 5-7 times modern levels. The temperature was a whole 3 DEGREES C over modern times!
That was 200 million years ago, even the days were 23 hours long and the years more than 20 days longer.
There's a reason scientists publish papers in peer reviewed journals, not every decision is as simple as jumping on the first convenient looking factoid.
I stole this Sig
That is not a belief. That is fact.
I prefer the "u" in honour as it seems to be missing these days.
The *planet* is clearly fine with high levels of CO2. The biosphere is fine with it too - given enough time to evolve and respond.
But we humans won't enjoy our cities getting flooded and our crops drying out (adapting will be very expensive). And a lot of the biosphere isn't being given time to respond either, since the temperature rise is happening so quickly. Those coral reefs can't just pick up and walk to a cooler area.
Why would anyone engrave "Elbereth"?
Did they place it next to the 401, or did they place the 401 next to the weather station?
There are a few weather stations in my home country (and during my studies I had to deal with them a lot), some of them having been in place for centuries, and many of them in rather unfortunate positions, mostly because when they were established it was a necessity to put them close to where people lived (so you could get there on foot), without considerations for projects that were decades or centuries in the future.
Moving those weather stations isn't a good idea either, though, because by taking readings where they are, you get a very good instrument for examining change over time. Moving the weather station would destroy that ability.
Of course such changes in the environment have to be taken into account. If you had a weather station in the middle of a sunny, grassy hill and a huge skyscraper is built in front of it so it's now permanently in the shadow of said building, it doesn't mean that the average temperature dropped by 5 or even 10 degrees Celsius.
Environmental impact on the weather stations have to be taken into account!
We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
As always, TFA fails to look at the broader context. 200 years ago was the Little Ice Age", i.e., an unusually cold period in history. Much of the warming of the past 200 years is simply due to coming out of this cold period. Exactly how much, is difficult to say.
Enjoy life! This is not a dress rehearsal.