2.4.1 spase://CNES/NumericalData/CDPP-AMDA/Indices/Ground_Based/ground-based-sme SuperMAG indices SuperMAG SML, SMU, SME indices 2024-09-30T08:56:54Z SuperMAG is a worldwide collaboration of organizations and national agencies that currently operate more than 300 ground based magnetometers. SuperMAG provides easy access to validated ground magnetic field perturbations in the same coordinate system, identical time resolution and with a common baseline removal approach. SuperMAG utilizes 3D vector measurements of the magnetic field obtained from ground bases magnetometers. Stations providing absolute measurements (e.g. Intermagnet Observatories) as well as stations providing relative measurements are included. SuperMAG is focused on the variations caused by electric currents flowing in the ionosphere and magnetosphere and hence subtracts the dominant and slowly varying Earth main field. SuperMAG service includes data with two different temporal resolution, 1-min and 1-sec. The latter is a subset of the former as not all stations provide 1-sec data. The 1-min data and all derived products can be accessed by selecting the 'Low Fidelity' option under Indices, Data, Polar Plots, Movies and Products. The 1-sec data and all derived products can be accessed by selecting the 'High Fidelity' option under Data and Polar Plots. More information and details are available in Gjerloev [2009] and Gjerloev [2012]. We gratefully acknowledge the SuperMAG collaborators (https://supermag.jhuapl.edu/info/?page=acknowledgement). Gjerloev, J. W. (2012), The SuperMAG data processing technique, J. Geophys. Res., 117, A09213, doi:10.1029/2012JA017683 Newell, P. T., and J. W. Gjerloev (2011), Evaluation of SuperMAG auroral electrojet indices as indicators of substorms and auroral power, J. Geophys. Res., 116, A12211, doi:10.1029/2011JA016779 spase://SMWG/Person/Jesper.W.Gjerloev PrincipalInvestigator SuperMAG description https://supermag.jhuapl.edu/info/?page=about SuperMAG acknowledgement https://supermag.jhuapl.edu/info/?page=acknowledgement SuperMAG Rules of the Road https://supermag.jhuapl.edu/info/?page=rulesoftheroad Gjerloev, J. W. (2012), The SuperMAG data processing technique, J. Geophys. Res., 117, A09213, doi:10.1029/2012JA017683 https://doi.org/10.1029/2012JA017683 Newell, P. T., and J. W. Gjerloev (2011), Evaluation of SuperMAG auroral electrojet indices as indicators of substorms and auroral power, J. Geophys. Res., 116, A12211, doi:10.1029/2011JA016779 https://doi.org/10.1029/2011JA016779 Gjerloev, J. W. (2009), A Global Ground-Based Magnetometer Initiative, Eos Trans. AGU, 90( 27), 230– 231, doi:10.1029/2009EO270002 https://doi.org/10.1029/2009EO270002 spase://SMWG/Repository/CDPP/AMDA Online Open CDPP/AMDA HAPI Server https://amda.irap.omp.eu/service/hapi ground-based-sme Web Service to this product using the HAPI interface. CSV Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers. spase://SMWG/Repository/CDPP/AMDA Online Open CDPP/AMDA Web application https://amda.cdpp.eu Access to Data via CDPP/AMDA Web application. CSV VOTable CDF PNG Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers. SuperMAG spase://CNES/Instrument/CDPP-AMDA/Indices/Ground_Based MagneticField 1975-01-01T00:00:00Z 2024-09-30T23:59:00Z PT1M Earth.NearSurface SME sme nT Magnetic SMU smu nT Magnetic SML sml nT Magnetic