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originally posted by: gort51
Yes the 100 years we have been keeping temperature readings, sort of pale into insignificance, with the time frames that we should be dealing with.
Also to mention the Warming period of 2000+ years ago...Egyptians, Sumerians, all the ancient ME civilisations, the Greeks, the Roman expansion, and the warming period of 1000 years ago, the exploring of the Vikings with North American contact, Greenland, the Mongol expansion, Polynesian expansion in the Pacific, Incas, Aztecs, Chinese etc etc.
originally posted by: AngryCymraeg
a reply to: musicismagic
Last winter here in the UK started off quite mild, before we got the Beast from the East - subzero temperatures for a week, which went away and then came back again. April saw odd temperature swings a touch of the Beast again and then sun and high temperatures. May was warm and it's looking like the last half of June is going to be scorching.
In the meantime Antarctic ice is melting faster than ever whilst in the Arctic 2018 is seeing record lows in terms of ice coverage.
Cooling? What freaking cooling?
There have been many arguments as to whether or not the eleven-year sunspot cycle affects our weather and climate. With our increased ability to monitor the sun, we are now aware that there is a small change in the total solar irradiance accompanying shifts from solar maximum conditions (with many sunspots) to solar minimum (with, basically, none). There is also a more substantial change in the ultraviolet (UV) portion of the solar spectrum, with direct impacts primarily in the stratosphere (above ~10km).
The effect of these changes on our temperature record has been noted by some researchers, and, like the change in solar irradiance, it too appears to be small. But there is little agreement on just how that change arises. Furthermore, there are claims that the sunspot cycle is associated with changes in storm tracks and rainfall. How could this happen with so little change in total energy?
Have a guess what comes next.
A quarter to half of Earth’s vegetated lands has shown significant greening over the last 35 years largely due to rising levels of atmospheric carbon dioxide, according to a new study published in the journal Nature Climate Change on April 25.
Green leaves use energy from sunlight through photosynthesis to chemically combine carbon dioxide drawn in from the air with water and nutrients tapped from the ground to produce sugars, which are the main source of food, fiber and fuel for life on Earth. Studies have shown that increased concentrations of carbon dioxide increase photosynthesis, spurring plant growth.
Popular belief is that CO2 doesn't help plants grow?
So contrary to popular belief apparently higher c02 has led to a greener earth, amazing. it's leading to more life
Biodiversity? Your source doesn't say that. But it does say this:
so we are fueling earths biodiversity and growth?
The beneficial impacts of carbon dioxide on plants may be limited, said co-author Dr. Philippe Ciais, associate director of the Laboratory of Climate and Environmental Sciences, Gif-suv-Yvette, France. “Studies have shown that plants acclimatize, or adjust, to rising carbon dioxide concentration and the fertilization effect diminishes over time.”
Dinosaurs that roamed the Earth 250 million years ago knew a world with five times more carbon dioxide than is present on Earth today, researchers say, and new techniques for estimating the amount of carbon dioxide on prehistoric Earth may help scientists predict how Earth's climate may change in the future.
That's what your source says.
think it was the volcanic activity that put all the c02 in the atmosphere?
The aim has been to demonstrate how variations in plate tectonics have led to variations in CO2 emissions from volcanoes 250 million years ago.
And the deeper the imaging equipment goes, the farther back in time scientists can see — as far back as 250 million years, said van der Meer. "Essentially, we can see the breakup of the supercontinent Pangaea, and the opening and closing of oceans," he said.