Why does climate warming eventually lead to the advent of ice time?

Recently, British and Canadian experts warned the world that in the next 10,000 to 100,000 years, a new ice age will usher in, which will cause Scotland, Northern Ireland and most of England to be covered by more than 900 meters of ice. Covered by glaciers, the large ice sheet in eastern Britain will reach a thickness of more than 1,800 meters. The ice thickness in the vast area from Aberdeenshire in eastern Scotland to Kent in eastern England reaches more than 1,800 meters, which is higher than Ben Nevis, the highest mountain in the UK. In this regard, experts believe that the reason for the return of this extremely cold climate is due to the insufficient content of gases with greenhouse effect in the future atmosphere, such as carbon dioxide, methane and other gases. Tomask Lawley from the University of Edinburgh and his Canadian colleague William Hyde said that people now actively advocate limiting the emissions of greenhouse gases such as carbon dioxide and methane, but in fact, these greenhouse gases are extremely important in preventing severe cold. effect.

To this end, in the journal "Nature", they published a paper stating that over the past three million years, the world's climate has changed extremely drastically, with hot and extremely cold climates appearing, and the culprit is the movement of the earth. Changes in orbit and reduction in carbon dioxide levels. Now, findings based on studies of tiny ocean fossils and records of Earth's orbital shifts are leading to a dramatic departure from what was previously thought to be a global climate crisis. Research reveals that in the next 10,000 to 100,000 years, we are gradually moving towards a major turning point in climate change, which will lead to the arrival of a new ice age again, covering Europe, Asia and South America. Moreover, according to computer simulations, it will also cause the sea level to drop by 300 meters, so Russia and the US state of Alaska will change from facing each other across the sea to connected land. The North Sea from the Netherlands and Scandinavia to the Russian Far East will become a huge glacial zone.

However, Professor Lawley also said that we should not be too panicked about this. Such results do not mean that humans should cancel controls on greenhouse gas emissions, nor does it mean that humans should do more Emitting carbon dioxide gas into the atmosphere.

We still have a lot of time to study the appropriate levels of greenhouse gases in the atmosphere so that they can play a positive role in the impact of future climate change instead of being accomplices in the climate crisis