The main purpose pf Mars Climate Orbiter was to study the past and present climate of Mars, and the presence and behavior of gases and ices like water and carbon dioxide.

• “火星气候观察者”号的主要目的就是研究火星过去和现在的气候；研究像水和二氧化碳之类的气体和冰是否存在意义它们的状态特征。