frozenguy said:So is he asking to estimate how long until there is about 0% CO2 in the atmosphere? Or an average time before a molecule escapes?
The lifetime of CO2 in the atmosphere of Mars is estimated to be around 30-50 million years. However, this is a rough estimate and can vary depending on various factors such as solar activity and the presence of other gases in the atmosphere.
The lifetime of CO2 on Mars is significantly longer compared to Earth, where it is only about 5-200 years. This is due to the thinner atmosphere on Mars, which does not have the same mechanisms for removing CO2 as Earth's thicker atmosphere does.
The long lifetime of CO2 on Mars is primarily due to the lack of a strong magnetic field and a thin atmosphere. Without a magnetic field, solar winds can strip away the upper atmosphere, leading to a slower rate of atmospheric escape. Additionally, the thin atmosphere means there are fewer particles to absorb or scatter the CO2, allowing it to remain in the atmosphere for longer.
The long lifetime of CO2 on Mars plays a significant role in the planet's climate. It is one of the main contributors to the planet's greenhouse effect, which helps to keep the surface warm enough for liquid water to exist. However, it also means that any changes in the composition of the atmosphere, such as an increase in CO2 levels, can have a long-lasting impact on the planet's climate.
The lifetime of CO2 on Mars is largely determined by the planet's characteristics and cannot be easily changed or altered. However, human activities, such as terraforming, could potentially impact the composition of the atmosphere and the lifetime of CO2. Further research and scientific advancements are necessary to fully understand and manipulate the atmosphere on Mars.