Early Mars Experienced Seasonal Climate Patterns Similar to Earth's
An intriguing new discovery has come to light about the climate of Mars billions of years ago. According to a study published in Nature Astronomy, the planet experienced regular seasonal patterns, similar to those seen on Earth.
Scientists have long theorized that Mars once had a denser atmosphere and warmer temperatures. Now, there is evidence to back up this hypothesis. Using data from the Curiosity rover, researchers determined that the amount of carbon dioxide in the Martian atmosphere varied in a pattern that was closely linked to the Martian year. This suggests that the atmosphere was able to store and release heat seasonally, creating a cycle of warm and cool periods. Additionally, the data also showed that the temperature on Mars was likely warm enough for liquid water to flow on the planet’s surface.
source: Phys.org