Oxygen Escape from Mars, Venus and Earth

9816237帕克斯顿由拉里·帕克斯顿博士领导的一个研究小组将调查火星、金星和地球的外圈中存在的过程，这些过程可能导致原子氧从火星大气中大量逃逸。该小组将产生外层原子氧的模型分布，并通过将其与现有的观测数据集进行比较来验证该模型。结果将是对这三个行星的外圈中每一个的工作机制进行比较，并一次看到它们如何随着时间的变化而变化。主要的集中区域将是火星大气中正在工作的过程以及对大气演化的影响。该项目的资金由天文科学司、大气科学司以及数学和物理科学局多学科活动办公室分担。

9816237 Paxton A research team led by Dr. Larry Paxton will investigate the processes which populate the exospheres of Mars, Venus, and Earth and which can lead to significant escape of atomic oxygen from the Mars atmosphere. The group will produce model distributions of the exospheric atomic oxygen and validate the model by comparing it to existing observational data sets. The result will be a comparison of the mechanisms at work in each of the three planets' exospheres and a first order look at how they have varied over time. The main area of concentration will be the processes at work in the Martian atmosphere and the implications for atmospheric evolution. Funding for this project is shared among the Division of Astronomical Sciences, the Division of Atmospheric Sciences, and the Office of Multidisciplinary Activities in the Mathematical and Physical Sciences Directorate.