Improved boundary conditions for coupled geospace models: an application in modeling spacecraft surface charging environment

These are simulation results from running the RAM-SCB model coupled with the BATS-R-US model via the Space Weather Modeling Framework (SWMF). Two simulations are conducted. One named as "Simulation I" contains simulation outputs from using the traditional outer boundary conditions for the RAM-SCB (i.e., assuming a Kappa distribution with MHD parameters obtained from the BATS-R-US model). The other one named as "Simulation II" contains simulation output from using the new outer boundary conditions for the RAM-SCB (i.e., combining the Denton's empirical electron flux distribution (E<40 keV) with the MHD-parameterized Kappa distribution). In "simulation_data.zip", three types of simulation results are included: "BC_simulation_?.zip": the outer boundary conditions of the electron flux at 6.5 Re at five different times (hour=6, 7, 10, 14, 19) "ram_e_d20130317_flux_simulation_?.zip": the differential electron flux in the equatorial plane within 6.5 Re during the March 17, 2013 event "RBSPB20130317.nc": the differential electron flux, and other parameters (ion flux, magnetic fields) along the RBSP-B trajectory. In "simulation20180410_alongRBSPa.zip", model results during the storm of 2018/04/10 are saved, including the differential electron flux and other parameters (ion flux, magnetic fields) along the RBSP-A trajectory. Both types of simulations are conducted. In "simulation20180826_alongRBSPa.zip", model results during the storm of 2018/08/25-26 are saved, including the differential electron flux, and other parameters (ion flux, magnetic fields) along the RBSP-A trajectory. Both type of simulations are conducted.

本数据集为通过空间天气建模框架（Space Weather Modeling Framework, SWMF）将RAM-SCB模型与BATS-R-US模型耦合后运行得到的模拟结果。本次共开展两组模拟实验：其一为"模拟I"，采用RAM-SCB模型的传统外边界条件，即假设由BATS-R-US模型得到的磁流体力学（Magnetohydrodynamics, MHD）参数符合卡帕（Kappa）分布，其输出为对应模拟结果；其二为"模拟II"，采用RAM-SCB模型的新型外边界条件，即结合Denton经验电子通量分布（能量E<40 keV）与MHD参数化卡帕分布，其输出为对应模拟结果。

在"simulation_data.zip"压缩包中，共包含三类模拟结果：
1. "BC_simulation_?.zip"：包含5个不同时刻（小时数分别为6、7、10、14、19）下6.5地球半径（Earth radii, Re）处的电子通量外边界条件；
2. "ram_e_d20130317_flux_simulation_?.zip"：对应2013年3月17日磁暴事件期间，6.5 Re范围内赤道面内的差分电子通量模拟结果；
3. "RBSPB20130317.nc"：包含沿辐射带风暴探测器B星（Radiation Belt Storm Probes-B, RBSP-B）轨迹的差分电子通量及其他参数，包括离子通量、磁场等。

"simulation20180410_alongRBSPa.zip"中存储了2018年4月10日磁暴事件期间的模型结果，包含沿辐射带风暴探测器A星（Radiation Belt Storm Probes-A, RBSP-A）轨迹的差分电子通量及其他参数，包括离子通量、磁场等，两组模拟均已完成。

"simulation20180826_alongRBSPa.zip"中存储了2018年8月25日至26日磁暴事件期间的模型结果，包含沿RBSP-A轨迹的差分电子通量及其他参数，包括离子通量、磁场等，两组模拟均已完成。