Hi Hello u.
nail upon the head. It is the RATE which is one concern. Its likely what took 200,000 years, an asteroid hitting the planet will take around 300 years to reach 2000 PPM CO2. Maybe 350 years so 2200 and this is IPCC ... the UN climate change numbers along with both Oxford and Cambridge and 5 other very good universities with the top climate change departments. NOT plucked out of some mad magazine.
Even here, at 400 PPM, temperatures will rise 5-6 degrees C but will take if the past is anything to go by around 600 years. Sadly, and without any doubt, not among 97% of the climate change community and that's 10,000 or so scientists, they agree on this issue. Consensus on one or more of the feedback loops occurring which will rapidly take us up from today's 411 PPM CO2 to 1,200 by about 2125 is actually 100%.
100%. And that's just One feedback, the melting of the Arctic and permafrost releasing 1.8 trillion tons of CO2 in frozen dead plants and animal matter. There sadly are likely 3 if not four post 2100. We can possibly avoid some of them. Others, impossible to stop even if we tried.
What ended each of these mass extinction events was capture of CO2 over a very long time, 800,000 to 3 million years and either continents hitting each other and burying forests, which turned into coal and seas of plankton which became oil, and we, now in our wisdom BURN it and expect what occurred already 5 times not to occur.
The previous Utube is a good one on the denial side of it and as one person shared, its akin to denial smoking caused cancer. In this case, where did coal come from ? Or Oil ? if we use it, burn it, release the energy and CO2 back out, a simple few chemical and exothermic reactions, what occurs ?
That is about as simply as I can put it. The process.
Their is HOPE .... and we humans are ingenious, but also at times cruel, greedy and stupid in the extreme.
Whilst quoting some idiot politician who cant even spell Potato, AL gore, whilst well meaning, the money behind the denial of this issue is large. One point I make as an Australian, one national treasure is GONE ... and GONE no matter what. The Great Barrier reef around for the last 2 million years is now 25% of the size it was in 1985. It is unlikely to be 10% of the size in 2050. It is very unlikely its there at all by 2100. The current state of the reef is NOT a debate, its sadly factual. Coral is being hit by extreme temperatures which cooks it and kills it, bleaching and takes 15 years to even have any hope of surviving.
One does not have to look very far to see evidence. Denial, delusional denial when extreme heat is being seen 10 times more than extreme cold, which again is a climate change effect when polar arctic airflow's normally trapped very far North or SOUTH ... due to hotter than normal conditions break away and the cold air goes further South as it did in the USA in 2018.
Again, and despite satellites for 40 years measuring both the SUN and its output, and the temperature in 500,000 locations clinically and with extreme accuracy, some idiots seem to think its all some non event. It was amusing, Trump, funded by coal and oil barons, his choice to debunk climate issues, a very vocal Nobel prize winner with NO qualifications in ANY climate science, who worked for and with oil and gas, was caught on tape this week accepting bribes to write papers that said CO2 is good for you on behalf of the Coal industry.
Sadly, again a chemical reaction, and not until say 2125 depending on what people do, with 1200 PPM clouds, that reflect back a lot of the Suns heat stop forming. STOP .... and this lovely feedback loop is worth about 5 degrees C all by itself. By then sadly, the ocean itself which absorbs 75% of the heat a lot of the CO2 and produces 60% of the oxygen in the atmosphere will be having a cow itself due to one if not two other feedback loops. the first is assured and acidity went up 50% in the ocean in the past 50 years via CO2 being absorbed, by 2150 well, calcium formed by shellfish will be hard to do, and the things that produce most of the oxygen now, algae and sea grass will be undergoing a sea change on steroids which in the past took 200,000 plus years to occur so giving it a chance to migrate to new areas, this time ? Even I cannot bear to think on this.
Other ocean feedbacks, well the CO2 absorbed by the ocean is trapped in inversion layers, layers of much cooler water and I do wonder how it will cope. Again, impossible to be constructive on this. Last but not least, fresh water added to salt water as the Arctic melts first but the Antarctic and its massive sheets of ice post 2100 being added to ocean currents which like a toilet circulate and warm water is taken North and to around the UK, if this stopped ?
Again, unlikely to be stopped. Unless we, act.
Again, there is hope.
Some hope and not for much cost, if we act soon. But denial and trolls and money rule the debate.
If you listen to the previous Utube, its sadly a mere spec of the denial and money behind things out of the USA and other oil nations and interests.
The future ... is the past... the outcome will be as it has been already 5 times and 76% to 99% of all life ends. In two of the cases, the air was NOT breathable. Oceans were acid baths and at the equator 40 degrees C. So longer than an hour and your cooked. COOKED ...
What a rapid event does is open to speculation. Not the end result of past events.