Wind Direction on Mars Changed Abruptly About 400,000 Years Ago - by briankoberlein
Human-driven climate change is a serious threat to humanity. While climatologists continue to improve our understanding of its impact and consequences, they also look at nature-driven climate change going back millions of years. Whereas for human climate change, we only have a case study of one planet, for natural climate change we have a case study of two planets. Like Earth, Mars has undergone significant climate change in the past.
. Its climate changed over a billion years to become the cold and dry world we know today. Even more recently, there have been shifts in the Martian weather, as noted in a recent study inThe data comes from the Tianwen-1 mission of the China National Space Administration . This mission included an orbiting satellite, a lander, and a rover named Zhurong. Using both orbital imaging and on-site observations, the mission looked at the orientation and structure of dunes on Mars.
This wasn’t just a casual shift, such as an unusual breeze from a different direction, but a sustained shift. On Earth in the northern hemisphere, winds generally blow from west to east. Imagine if that changed in a short amount of time to start blowing from north to south. You can see how that would dramatically change the weather in your area. Thus, this research shows that the climate of Mars changed dramatically about 400,000 years ago.
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