Densities derived from precise orbit determination of the Mars Odyssey and MRO satellites

This data set consist of daily mass densities derived from precise orbit determination of the Mars Reconnaissance Orbiter (MRO) satellite at 251 km and the Mars Odyssey (MO) satellite at 412 km. The data encompass 2006-2020 (MRO) and 2002-2020 (MO). Both satellites are in low-eccentricity near-polar day/night Sun-synchronous orbits. Also included are auxiliary data sets consisting of daily 10.7 cm solar radio fluxes adjusted to Mars orbit, and daily values of column dust optical depth from TES and THEMIS nadir observations integrated over all longitudes and between 0º and 90ºS latitude More details are found in the README.txt file. This data set is made available in connection with the following publication: Forbes, J.M., Bruinsma, S.L., Zhang, X., Marty, J.-C., Laurens, S. (2024). Long-term Variability of Mars’ Exosphere Density Based on Precise Orbital Analysis of Mars Reconnaissance Orbiter and Mars Odyssey. Geophysical Research Letters, 51. https://doi.org/10.1029/2023GL107044本数据集包含基于火星勘测轨道器（Mars Reconnaissance Orbiter, MRO）与火星奥德赛（Mars Odyssey, MO）的精密定轨结果推导得到的每日大气质量密度数据，其中MRO轨道高度为251千米，MO轨道高度为412千米。数据覆盖时段为2006年至2020年（MRO）及2002年至2020年（MO）。两颗卫星均运行于低偏心率近极区昼/夜太阳同步轨道。 本数据集同时配套提供辅助数据集：其一为经校准至火星轨道的每日10.7厘米太阳射电通量数据；其二为基于热发射光谱仪（Thermal Emission Spectrometer, TES）与热辐射成像系统（Thermal Emission Imaging System, THEMIS）的天底观测数据，经全球经度范围及0°至90°S纬度区间积分后得到的柱尘埃光学厚度日均值。 更多详细信息可查阅README.txt文件。 本数据集的发布关联以下学术出版物： Forbes, J.M.、Bruinsma, S.L.、Zhang, X.、Marty, J.-C.、Laurens, S. (2024). 基于火星勘测轨道器与火星奥德赛精密轨道分析的火星外逸层密度长期变化. 《地球物理研究快报》, 51. https://doi.org/10.1029/2023GL107044