{ "HAPI": "3.2", "x_description": "This dataset contains the electrostatic potential pattern representing ionospheric convection\nin the Southern Hemisphere measured by SuperDARN. The data is provided both as 6th order map\npotential coefficientsand as ionospheric potential on a rectilinear 40x40 grid with 222 km\nspacing and centred on the geomagnetic pole. Information is also provided on the number of\nobservations and list of radars contributing to each measurement. The Interplanetary Magnetic\nField (IMF) at the Earth (taken from the NASA OMNI dataset) is provided for context. The value\nof the Heppner-Maynard Boundary (HMB) used to scale the size of the ionospheric convection\npattern is also included.\n\nSuperDARN is an international collaboration which operates a network of high frequency\ncoherent scatter radars to characterise the polar ionospheric convection pattern in the\nnorthern and southern hemispheres.\n\nThis dataset was generated as part of European Union ECLAT project. The aim of the European\nCluster Assimilation Technology (ECLAT) is to provide a novel data base, by providing an upgrade\nto the CAA. To achieve this, ECLAT programme ingests into the CAA supporting data from other\nspace- and ground-based observatories, provide data mining routines, refine data products and\nsoftware tools for their visualisation, and develop existing European magnetospheric modeling\ninfrastructure to provide context for the observational data.\n\nThe contacts for the ECLAT project are\nSteve Milan, University of Leicester\nRumi Nakamura, Oesterreichische Akademie der Wissenschaften\nKirsti Kauristie, Finnish Meterological Institute\nVictor Sergeev, Petersburg State University\nHermann Opgenoorth, Swedish Institute of Space Physics", "cadence": "PT120.000000S", "parameters": [ { "type": "isotime", "units": "UTC", "name": "time_tags", "description": "Time tag start of integration period", "label": "Universal Time", "length": 24, "fill": null }, { "type": "integer", "name": "Quality", "description": "Quality flag: 4 - high quality, 1 - poor quality, 0 - no data present", "label": "Quality flag: 4 - high quality, 1 - poor quality, 0 - no data present", "units": null, "fill": "9" }, { "type": "double", "name": "Bimf_vec_xyz_gsm", "description": "Interplanetary Magnetic Field Vector at the magnetopause in GSM coordinates (from the NASA OMNI dataset)", "label": "Interplanetary Magnetic Field Vector at the magnetopause in GSM coordinates (from the NASA OMNI dataset)", "units": "nT", "fill": "9999.99", "size": [ 3 ] }, { "type": "double", "name": "P_diff", "description": "Potential difference between max and min in convection electrostatic potential pattern", "label": "Potential difference between max and min in convection electrostatic potential pattern", "units": "kV", "fill": "-1e30" }, { "type": "double", "name": "P_max", "description": "Maximum in convection electrostatic potential pattern", "label": "Maximum in convection electrostatic potential pattern", "units": "kV", "fill": "-1e30" }, { "type": "double", "name": "P_min", "description": "Minimum in convection electrostatic potential pattern", "label": "Minimum in convection electrostatic potential pattern", "units": "kV", "fill": "-1e30" }, { "type": "double", "name": "HMB_lat", "description": "Latitudinal extent of convection pattern at midnight (Heppner-Maynard boundary)", "label": "Latitudinal extent of convection pattern at midnight (Heppner-Maynard boundary)", "units": "degrees", "fill": "999" }, { "type": "double", "name": "Coefficients", "description": "Coefficients of the spherical harmonic fit representing the electrostatic potential pattern", "label": "Coefficients of the spherical harmonic fit representing the electrostatic potential pattern", "units": null, "fill": "-1e30", "size": [ 49 ] }, { "type": "integer", "name": "n_radar_obs", "description": "Number of observations from contributing radars", "label": "Number of observations from contributing radars", "units": null, "fill": "-1", "size": [ 40 ] }, { "type": "integer", "name": "n_vec_grid", "description": "Number of observations contributing to the electrostatic potential pattern on 40x40 grid", "label": "Number of observations contributing to the electrostatic potential pattern on 40x40 grid", "units": null, "fill": "-1", "bins": [ { "name": "dimension_x__CC_CP_AUX_ECLAT_SDARN_SMAP", "centers": [ -4329, -4107, -3885, -3663, -3441, -3219, -2997, -2775, -2553, -2331, -2109, -1887, -1665, -1443, -1221, -999, -777, -555, -333, -111, 111, 333, 555, 777, 999, 1221, 1443, 1665, 1887, 2109, 2331, 2553, 2775, 2997, 3219, 3441, 3663, 3885, 4107, 4329 ], "units": null }, { "name": "dimension_y__CC_CP_AUX_ECLAT_SDARN_SMAP", "centers": [ -4329, -4107, -3885, -3663, -3441, -3219, -2997, -2775, -2553, -2331, -2109, -1887, -1665, -1443, -1221, -999, -777, -555, -333, -111, 111, 333, 555, 777, 999, 1221, 1443, 1665, 1887, 2109, 2331, 2553, 2775, 2997, 3219, 3441, 3663, 3885, 4107, 4329 ], "units": null } ], "size": [ 40, 40 ] }, { "type": "double", "name": "P_grid", "description": "Electrostatic potential pattern on 40x40 grid", "label": "Electrostatic potential pattern on 40x40 grid", "units": "kV", "fill": "-1E30", "bins": [ { "name": "dimension_x__CC_CP_AUX_ECLAT_SDARN_SMAP", "centers": [ -4329, -4107, -3885, -3663, -3441, -3219, -2997, -2775, -2553, -2331, -2109, -1887, -1665, -1443, -1221, -999, -777, -555, -333, -111, 111, 333, 555, 777, 999, 1221, 1443, 1665, 1887, 2109, 2331, 2553, 2775, 2997, 3219, 3441, 3663, 3885, 4107, 4329 ], "units": null }, { "name": "dimension_y__CC_CP_AUX_ECLAT_SDARN_SMAP", "centers": [ -4329, -4107, -3885, -3663, -3441, -3219, -2997, -2775, -2553, -2331, -2109, -1887, -1665, -1443, -1221, -999, -777, -555, -333, -111, 111, 333, 555, 777, 999, 1221, 1443, 1665, 1887, 2109, 2331, 2553, 2775, 2997, 3219, 3441, 3663, 3885, 4107, 4329 ], "units": null } ], "size": [ 40, 40 ] } ], "startDate": "2000-01-01T00:00Z", "stopDate": "2011-01-01T00:00Z", "x_tap_url": "https://csa.esac.esa.int/csa-sl-tap/data?retrieval_type=HEADER&DATASET_ID=CC_CP_AUX_ECLAT_SDARN_SMAP&FORCEPACK=false", "x_tap_data_url": "https://csa.esac.esa.int/csa-sl-tap/data?RETRIEVAL_TYPE=product&RETRIEVAL_ACCESS=streamed&DATASET_ID=CC_CP_AUX_ECLAT_SDARN_SMAP&START_DATE=2011-01-01T00:00Z&END_DATE=2011-01-01T00:00Z", "status": { "code": 1200, "message": "OK" }, "x_LastUpdate": "2026-04-14T15:10:36Z" }