What was the atmosphere like during the Jurassic Period in comparison to today's?

Question

HIX Tutor · Accepted Answer

undefined The atmosphere during the Jurassic Period was different from today. Here’s a simple way to understand:

1. **More Carbon Dioxide**: There was much more carbon dioxide (CO2) in the air. 
2. **Warmer Temperatures**: The Earth was warmer. This helped dinosaurs grow big.
3. **No Ice Caps**: There were no large ice caps at the poles, so more land was warm and wet.
4. **More Plants**: There were lots of plants, which helped make oxygen for animals.

Today, we have less CO2, cooler temperatures, and ice caps. The air is different now!

Nathan Abbe · Answer

there is evidence that the atmosphere was much more humid, with higher levels of Carbon Dioxide and likely more cloud cover.

There is evidence of lush forests that existed during the Jurassic period. These forests were dominated by fern trees, which require high levels of humidity and water. This suggests that the atmosphere during this time had higher levels of carbon dioxide than it does now, and the evidence from fossils suggests that the humidity levels were higher than they are today. The earth's climate may have been at least partially tropical, which would have required a cloud cover to equalize temperatures throughout. The size of dinosaurs, giant snakes, and enormous crocodiles indicate that the climate was more uniform than it is now. These organisms are cold-blooded and could not reach their gigantic size in a climate with cold winters and extremely hot summers. Large reptiles are currently only found in tropical climates near the equator.

Cora Andrews · Answer

undefined During the Jurassic Period, the atmosphere had higher levels of carbon dioxide and oxygen compared to today. Carbon dioxide levels were approximately 4 to 5 times higher than they are today, while oxygen levels were around 30% compared to approximately 21% today. Additionally, the climate was warmer and more humid during the Jurassic Period, with extensive forests and lush vegetation covering much of the landmasses.