HIDRA simulations and post-processing scripts for JGR: SP manuscript: characterization of N+ abundances in the terrestrial polar wind using the multiscale atmosphere-geospace environment
Data files
Mar 22, 2024 version files 1.71 MB
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JGR_final_RA_HIDRA_N+_plots.ipynb
301.08 KB
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JGR_RA_HIDRA_chemrates.ipynb
287.87 KB
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JGR_RA_HIDRA_Fluences2.ipynb
595.54 KB
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JGR_RA_HIDRA_momentumEQN.ipynb
528.70 KB
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README.md
1.67 KB
Abstract
The High-latitude Ionosphere Dynamics for Research Applications (HIDRA) model is part of the Multiscale Atmosphere-Geospace Environment (MAGE) model under development by the Center for Geospace Storms (CGS) NASA DRIVE Science Center. This study employs HIDRA to simulate upflows of H+, He+, O+, and N+ ions, with a particular focus on the relative N+ concentrations, production and loss mechanisms, and thermal upflow drivers as functions of season, solar activity, and magnetospheric convection. The simulation results demonstrate that N+ densities typically exceed He+ densities, N+ densities are typically ∼ 10% O+ densities, and N+ concentrations at quiet-time are approximately 50-100% of N+ concentrations during storm-time. Furthermore, the N+ and O+ upflow fluxes show similar trends with variations in magnetospheric driving. The inclusion of ion-neutral chemical reactions involving metastable atoms is shown to have significant effects on N+ production rates. With this metastable chemistry included, the simulated ion density profiles compare favorably with satellite measurements from Atmosphere Explorer C (AE-C) and Orbiting Geophysical Observatory 6 (OGO-6).
README: HIDRA simulations and post-processing scripts for JGR:SP manuscript: "Characterization of N+ Abundances in the Terrestrial Polar Wind using the Multiscale Atmosphere-Geospace Environment"
https://doi.org/10.5061/dryad.ghx3ffbws
Description of the data and file structure
This dataset was produced by the HIDRA model and includes all post-processing scripts. The Jupyter notebook (.ipynb) file titled "JGR_final_RA_HIDRA_N+plot.ipynb" generates Figures 1-10, 13-16, and 18 provided the user setting at of 1- season by the SeasonFlag (=1 for summer and =0 for winter), 2- solar activity level denoted by F10.7 solar radio flux by the SolarFlag (=0 for F10.7= 80 sfu, =1 for F10.7= 120 sfu, and =2 for F10.7= 200 sfu, where a solar flux unit, sfu, is equal to 10−22 W ⋅ m−2 ⋅ Hz−1), and geomagnetic activity level denoted by GeoFlag (=1 for quiet time, =2 for storm-time, and =3 for recovery time). Similarly, the file titled "JGR_RA_HIDRA_Fluences2.ipynb" produces Figures 11 and 12 and the notebook file titled "JGR_RA_HIDRA_chemrates.ipynb" produces Figure 17. Lastly, "JGR_RA_HIDRA_momentumEQN.ipynb" generates Figure 19-21.
Sharing/Access information
This DOI includes only the post-processing scripts in Jupyter Notebook (python). For the complete data set of all simulation results the user is recommended to login to Globus and retrieve the data available to the public with the following link:
Methods
This dataset was collected by running the High-latitude Ionosphere Dynamics for Research Applications (HIDRA) model which is a significant rewrite of the Ionosphere/Polar Wind Model (IPWM) [Varney et al., 2014] [Varney et al., 2015] [Varney et al., 2016]) and designed as a component of the Multiscale Atmosphere-Geospace Environment (MAGE) framework under development by the Center for Geospace Storms NASA DRIVE Science Center. This dataset was processed using Jupyter Notebook scripts for analysis and vizualization.