Posted on 04/18/2023 5:59:52 AM PDT by silent majority rising
Yes. Earth has experienced cold periods (informally referred to as “ice ages,” or "glacials") and warm periods (“interglacials”) on roughly 100,000-year cycles for at least the last 1 million years. The last of these ice age glaciations peaked* around 20,000 years ago. Over the course of these cycles, global average temperatures warmed or cooled anywhere from 3° to perhaps as much as 8° Celsius (5°-15° Fahrenheit). It was partly through their attempts to understand what caused and ended previous ice ages that climate scientists came to understand the dominant role that carbon dioxide plays in Earth’s climate system, and the role it is playing in current global warming.
Over at least the past million years, glacial and interglacial cycles have been triggered by variations in how much sunlight reaches the Northern Hemisphere in the summer, which are driven by small variations in the geometry of Earth’s axis and its orbit around the Sun. But these fluctuations in sunlight aren’t enough on their own to bring about full-blown ice ages and interglacials. They trigger several feedback loops that amplify the original warming or cooling. During an interglacial,
sea ice and snow retreat, reducing the amount of sunlight the Earth reflects; warming increases atmospheric water vapor, which is a powerful greenhouse gas; permafrost thaws and decomposes, releasing more methane and carbon dioxide; and the ocean warms and releases dissolved carbon dioxide, which traps even more heat. These feedbacks amplify the initial warming until the Earth’s orbit goes through a phase during which the amount of Northern Hemisphere summer sunlight is minimized. Then these feedbacks operate in reverse, reinforcing the cooling trend.
*Correction. An earlier draft mistakenly said that the last of these ice ages ended about 20 thousand years ago. The glaciation phase peaked around that time. The Grindlewald Fluctuation began in 1650 and ended in the early 20th century, and so ALL of our calculations reflect warming from that period.
A GCSE study aide on the educational website features a bullet-pointed list of “positive and negative impacts of climate change”. - https://www.independent.co.uk/climate-change/news/bbc-bitesize-climate-change-reactions-b1876100.html
The sun’s energy, the planets orbit and wobble and the tectonic plates moving about changing the flow of warm and cold water, the volcanoes and meteors over billions of years.
Yet it is the plastic bags and aluminum cans and gas cars and stoves are the real movers of climate change all in the past 100 years....
The solution is to tax the little people much more and restrict their use of say food and comfort.
Wow, they got savaged for daring to publish some positive effects. I followed the links but am not seeing the original version of their bullet points. Either I’m overlooking it or they got shamed into taking it down.
Yes, https://www.bbc.co.uk/bitesize/guides/zcn6k7h/revision/5 no longer provides any positive effects. However, if you use the Wayback Machine you can find a June 3 2021 version that provides the blatantly censored info: https://web.archive.org/web/20210603180522/https://www.bbc.co.uk/bitesize/guides/zcn6k7h/revision/5
Note there is a Open in the Archive extension for Firefox .
Thanks, very interesting. Here’s their list of positives:
-warmer temperatures and increased CO2 levels, leading to more vigorous plant growth
-some animals and plants could benefit and flourish in a changing climate
-new shipping routes, such as the Northwest passage, would become available
-more resources, such as oil, becoming available in places such as Alaska and Siberia when the ice melts
-energy consumption decreasing due to a warmer climate
-longer growing season leading to a higher yields in current farming areas
-frozen regions, such as Canada and Siberia, could be able to grow crops
-new tourist destinations becoming available
More plant growth, longer growing seasons, less energy use, more energy production — these things aren’t just chump change. They are serious, substantial upsides. It’s no wonder the climate change hoaxers clamped down so ferociously on their publication.
Bourne Identity sequel or episode of The Big Bang Theory?
Thank God for Global Warming, because it sure was dark, dank, and cool during that time period. The plants love it too! Since these bozos call it “Green Energy”, they have mislabeled it. if you take all of the CO2 out of the atmosphere, the plants will suffocate and die, and us right after it. But maybe that is part of the plan.
Thanks, very interesting. Here’s their list of positives: -warmer temperatures and increased CO2 levels, leading to more vigorous plant growth -some animals and plants could benefit and flourish in a changing climate -new shipping routes, such as the Northwest passage, would become available -more resources, such as oil, becoming available in places such as Alaska and Siberia when the ice melts -energy consumption decreasing due to a warmer climate -longer growing season leading to a higher yields in current farming areas -frozen regions, such as Canada and Siberia, could be able to grow crops -new tourist destinations becoming availablePlus: Less need for government regulation to stop Global Warming.
Lower business and personal taxes due to less environmental government.
Greater business and personal freedom.
Less degradation of military forces due to less environmental constraints.
Less exaggerated scaremongering in academia and by media.
More objectivity in academia and media.
More can be added, but you can see why many powers oppose even the mere mention of any positive effects.
If Global Warming is truly to be feared, then it is a warranted judgment from God, yet as with Covid, so is much of the reaction to it.
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