July 1, 2019 Dataset title: "Multi-species and multi-fluid MHD approaches for the study of ionospheric escape at Mars" Author: Leonardo H. Regoli Contact: Dr. Leonardo H. Regoli lregoli@umich.edu Funding: National Aeronautics and Space Administration (NASA) Associated publication: Regoli, L.H., Dong, C., Ma, Y.J., Dubinin, E., Manchester, W.B., Bougher, S.W., & Welling, D.T. (2018). Multispecies and multifluid MHD approaches for the study of ionospheric escape at Mars. Journal of Geophysical Research: Space Physics, 123. https://doi.org/10.1029/2017JA025117 Research overview: The paper presents a detailed comparison between the results provided by a multi-species and a multi-fluid MHD models to study the escape of heavy ions from the Martian ionosphere. The research presented in the paper was conducted in 2017 at the Department of Climate and Space Sciences and Engineering and the simulations were run at NASA's Pleiades supercomputer. Methods: The three models involved (Mars Global Ionosphere Thermosphere Model, M-GITM, the multi- species MHD, MS-MHD, and the multi-fluid MHD MF-MHD) were run until reaching steady state on the Pleiades supercomputer. M-GITM was run for a month of simulation time, for the period of time between July and August 2015. The MHD models were run for 50,000 iterations using the neutral densities from M-GITM as ion sources. The details of the models can be found in Bougher et al. (2015) (M-GITM), Ma et al. (2004) (MS-MHD) and Najib et al. (2011) (MF-MHD). File inventory: there are two different sets of outputs for some of the models. The original set is from the original paper submission, while the updated set corresponds to some files produced during the review process. The updated set and original files marked "NOT DEPRECATED" contain the files from which all the analysis and figures in the published version of the paper were produced. (UPDATED) The data files correspond to the following: revised_shl_ful_5_n00050000_mfmhd_paper.out: MF-MHD output in binary format. Spherical D shells between 2 and 6 Mars radii (RM) in steps of 1 RM. revised_3d__ful_4_n00050000_msmhd_paper.out: MS-MHD output in binary format. Full domain D in cartesian coordinates. revised_3d__ful_4_n00050000_mfmhd_paper.out: MF-MHD output in binary format. Full domain D in cartesian coordinates. revised_3d__ful_4_n00050000_mfmhd_paper_nocrustal.out: MF-MHD output in binary format. D Full domain in cartesian coordinates, no crustal fields included. revised_3d__ful_4_n00050000_mfmhd_paper_nocrustal_nogitm.out: MF-MHD output in binary D format. Full domain in cartesian coordinates, no crustal fields included. Symmetric atmosphere (M-GITM output not used). revised_3d__ful_4_n00050000_mfmhd_paper_nocrustal_nogitm_antibx.out: MF-MHD output in binary D format. Full domain in cartesian coordinates, no crustal fields included. Symmetric atmosphere (M-GITM output not used). IMF Bx inverted. (ORIGINAL) The data files correspond to the following: mf_vs_ms_paper_rotated.dat: 3-dimensional M-GITM output in ASCII format; NOT DEPRECATED read_BATSRUS_ful.m: MATLAB script to read binary BATSRUS output (full 3-dimensional grid). NOT DEPRECATED read_BATSRUS_shl.m: MATLAB script to read binary BATSRUS output (shell grid). NOT DEPRECATED shl_ful_5_n00050000_msmhd.out: MS-MHD output in binary format. Spherical shells between 2 and 6 Mars radii (RM) in steps of 1 RM. NOT DEPRECATED shl_ful_5_n00050000_mfmhd.out: MF-MHD output in binary format. Spherical shells between 2 and 6 Mars radii (RM) in steps of 1 RM. DEPRECATED - SEE REVISED FILES 3d__ful_4_n00050000_msmhd.out: MS-MHD output in binary format. Full domain in cartesian coordinates. DEPRECATED - SEE REVISED FILES 3d__ful_4_n00050000_mfmhd.out: MF-MHD output in binary format. Full domain in cartesian coordinates. DEPRECATED - SEE REVISED FILES Variables: M-GITM contains the following variables (details in the header): #1.LON(deg) 2.LAT(deg) 3.ALT(km) 4.Tn(K) 5.Ti(K)6.Te(K) 7.nCO2(1/cc) 8.nO(1/cc) 9.nN2(1/cc) 10.nCO(1/cc) 11.QCO2(1/s) 12.QOP1(1/s) 13.QOP2(1/s) 14.Ne(1/cc) 15.Un(m/s) 16.Vn(m/s) 17.Wn(m/s) 18.SZA(deg) The MS-MHD files contain the following fields: r(RM) lon(deg) lat(deg) rho(Mp/cc) Hp(Mp/cc) O2p(Mp/cc) Op(Mp/cc) CO2p(Mp/cc) ux(km/s) uy(km/s) uz(km/s) bx(nT) by(nT) bz(nT) p(nPa) b1x(nT) b1y(nT) b1z(nT) e(J/m3) jx(uA/m2) jy(uA/m2) jz(uA/m2) The MF-MHD files contain the following fields: r(RM) lon(deg) lat(deg) Rho Ux(km/s) Uy(km/s) Uz(km/s) Bx(nT) By(nT) Bz(nT) P(nPa) HpRho(Mp/cc) HpUx(km/s) HpUy(km/s) HpUz(km/s) HpP(nPa) O2pRho(Mp/cc) O2pUx(km/s) O2pUy(km/s) O2pUz(km/s) O2pP(nPa) OpRho(Mp/cc) OpUx(km/s) OpUy(km/s) OpUz(km/s) OpP(nPa) CO2pRho(Mp/cc) CO2pUx(km/s) CO2pUy(km/s) CO2pUz(km/s) CO2pP(nPa) b1x(nT) b1y(nT) b1z(nT) e(J/m3) jx(uA/m2) jy(uA/m2) jz(uA/m2) References: - Ma, Y., Nagy, A. F., Sokolov, I. V., & Hansen, K. C. (2004). Three-dimensional, multispecies, high spatial resolution MHD studies of the solar wind interaction with Mars. Journal of Geophysical Research, 109, A07211. https://doi.org/10.1029/2003JA010367 - Najib, D., Nagy, A. F., Toth, G., & Ma, Y. (2011). Three-dimensional, multifluid, high spatial resolution MHD model studies of the solar wind interaction with Mars. Journal of Geophysical Research, 116, A05204. https://doi.org/10.1029/2010JA016272 - Bougher, S. W., Pawlowski, D., Bell, J. M., Nelli, S., McDunn, T., Murphy, J. R., et al. (2015). Mars Global Ionosphere-Thermosphere Model: Solar cycle, seasonal, and diurnal variations of the Mars upper atmosphere. Journal of Geophysical Research: Planets, 120, 311–342. https://doi.org/10.1002/2014JE004715 Dataset citation: Regoli, L.H. (2018). Model outputs for "Multi-species and multi-fluid MHD approaches for the study of ionospheric escape at Mars" [Data set]. University of Michigan Deep Blue Data Repository. https://doi.org/10.7302/Z2GH9G49