<_Note>Nodes prefixed with a _ are not valid SPASE, but are included for debugging. Values prefixed with a x_ are not valid SPASE but may considered for addition for completeness. 2.6.1 <_MasterURL>https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/ts2_l2_mag_bdc-16sps_00000000_v01.json (from all.xml) <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json TRACERS 2 Level 2 Fluxgate Magnetometer (MAG) Direct Current Magnetic Field (BDC) 16 samples per second (SPS) Data <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description ts2_l2_mag_bdc-16sps <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source Calibrated fluxgate magnetometer data acquired by TRACERS. Data have been calibrated, despun, and detrended against the International Geomagnetic Reference Field (IGRF). These CDF files are labeled using a version number (x,y,z), where x=0 indicates preliminary data subject to further revision of the attitude solution. Torquer coil signals are not processed at this stage; therefore, measurements acquired during torquer coils operation are clipped from this data. Caveats: (1) uses a best estimate for spacecraft attitude adjustment; (2) includes an ad-hoc delta-IGRF determined as a function of orbit phase to further minimize the amount of background field in the delta-Bs. (3) some intervals retain residual spin-period noise of undetermined origin, possibly due to gain nonlinearity. <_Description>Source: Master/CDFglobalAttributes/TEXT David Miles, TRACERS PI and Robert J. Strangeway <_Acknowledgement>Source: Master/CDFglobalAttributes/Acknowledgement <_Rights> SPDX Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html https://spdx.org/licenses/ https://tracers.physics.uiowa.edu/ at Univ. of Iowa TRACERS Homepage <_Note>URL also in all.xml. Using master. https://science.nasa.gov/mission/tracers/ at NASA TRACERS Mission Page <_Note>URL also in all.xml. Using master. https://doi.org/10.1007/s11214-025-01212-3 in Space Science Reviews MAG Instrument Paper <_Note>URL also in all.xml. Using master. https://cdaweb.gsfc.nasa.gov/pub/data/tracers/00readme.html at GSFC SPDF TRACERS00READ.TXT <_Note>URL also in all.xml. Using master. https://cdaweb.gsfc.nasa.gov/pub/data/tracers/documents/TRACERS-CMAD.pdf at GSFC TRACERS CMAD <_Note>URL also in all.xml. Using master. https://tracers.physics.uiowa.edu/rules-use <_Caveats>Source: Master/CDFglobalAttributes/Rules_of_use <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json 2025-09-26T15:36:40Z 2026-06-03T22:59:18Z <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop <_ObservedRegion>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json <_ProcessingLevel>Processing level is not available in the master file; it should be there instead of, say, https://github.com/rweigel/cdawmeta-spase/blob/main/ProcessingLevel.json spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: at HTTPS from SPDF https://cdaweb.gsfc.nasa.gov/pub/data/tracers/tracers2/mag/l2/bdc-16sps In CDF via HTTP from CDAWeb ts2_l2_mag_bdc-16sps_%Y%m%d_%Q.cdf %Y TS2_L2_MAG_BDC-16SPS CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: at FTPS from SPDF ftps://cdaweb.gsfc.nasa.gov/pub/data/tracers/tracers2/mag/l2/bdc-16sps In CDF via HTTP from CDAWeb ts2_l2_mag_bdc-16sps_%Y%m%d_%Q.cdf %Y TS2_L2_MAG_BDC-16SPS CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: at CDAWeb Web Service https://cdaweb.gsfc.nasa.gov/WebServices/ Instructions for using web services to access this dataset an other other metadata and options for CDAWeb datasets. The ProductKey here corresponds to the query parameter 'dataset' in the tables at the AccessURL in a dataset-related request can be made. TS2_L2_MAG_BDC-16SPS CDF CSV GIF NetCDF PNG PS PDF XML x_Script.IDL x_Script.Python Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: at CDAWeb Web Service user interface https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=TS2_L2_MAG_BDC-16SPS TS2_L2_MAG_BDC-16SPS Web service user interface for this product. CDF GIF PDF Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: at CDAWeb Python Script https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/TS2_L2_MAG_BDC-16SPS/clientLibraryExample/ TS2_L2_MAG_BDC-16SPS Web service that generates a Python script to access this product. x_Script.IDL x_Script.Python spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/SSCWeb. Please also acknowledge the data producer: at 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=TS2_L2_MAG_BDC-16SPS TS2_L2_MAG_BDC-16SPS Web Service to this product. HTML spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: at CDAWeb HAPI Server https://hapi-server.org/servers/#server=CDAWeb&dataset=TS2_L2_MAG_BDC-16SPS@0 Web Service to this product using the HAPI interface. Note that HAPI dataset has a collection of parameters, each having the same time stamps. This CDAWeb dataset contains 2 HAPI-type datasets. The @0, @1, ... at the end of the ParameterKeys indicates the index of the CDAWeb dataset. (The dataset index <=> CDF file time variable pairs are @0 => ts2_l2_mag_16sps_epoch, @1 => ts2_l2_mag_1sps_epoch.) TS2_L2_MAG_BDC-16SPS@0 TS2_L2_MAG_BDC-16SPS@1 CSV JSON Binary spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: at CDAWeb HAPI Script in Multiple Languages https://hapi-server.org/servers/#server=CDAWeb&dataset=TS2_L2_MAG_BDC-16SPS@0&return=script Web Service user interface that generates scripts in IDL, Javascript, MATLAB, Python, Autoplot, curl, wget to access this product. See https://hapi-server.org/servers/api for the API. Note that HAPI dataset has a collection of parameters, each having the same time stamps. This CDAWeb dataset contains 2 HAPI-type datasets. The @0, @1, ... at the end of the ParameterKeys indicates the index of the CDAWeb dataset. (The dataset index <=> CDF file time variable pairs are @0 => ts2_l2_mag_16sps_epoch, @1 => ts2_l2_mag_1sps_epoch.) TS2_L2_MAG_BDC-16SPS@0 TS2_L2_MAG_BDC-16SPS@1 x_Script.IDL x_Script.Javascript x_Script.MATLAB x_Script.Python x_Script.Autoplot x_Script.curl x_Script.wget spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: at HAPI visualizations https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=TS2_L2_MAG_BDC-16SPS@0&format=gallery Web Service that generates plots. See https://hapi-server.org/plot/ for the API. TS2_L2_MAG_BDC-16SPS@0 TS2_L2_MAG_BDC-16SPS@1 PNG PDF SVG Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellite 2 (from all.xml/observatory/description/@short) DC Magnetometer (from all.xml/instrument/description/@short) Space Physics (from Master/CDFglobalAttributes/Discipline) Magnetospheric Science Space Physics (from Master/CDFglobalAttributes/Discipline) Ionospheric Science (from Master/CDFglobalAttributes/Discipline) TS2 (from Master/CDFglobalAttributes/Source_name) Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellite 2 (from Master/CDFglobalAttributes/Source_name) bdc-16sps (from Master/CDFglobalAttributes/Data_type) l2_mag (from all.xml/instrument/@ID) Earth.Magnetosphere Earth.NearSurface.Ionosphere Earth.NearSurface.Ionosphere.Topside Earth.NearSurface.AuroralRegion Earth.NearSurface.PolarCap Time since Jan 1, 2000 ts2_l2_mag_16sps_epoch CATDESC: 'Default Time for 16sps Processed Data'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.' ns Scalar Temporal ts2_l2_mag_16sps_tss_deltab ts2_l2_mag_16sps_tss_deltab Master CDF CATDESC: 'DeltaB in TRACERS Spin Sun Adjusted Coordinates'. Master CDF VAR_NOTES: 'DeltaB in TRACERS Spin Sun Adjusted Coordinates. Model Magnetic Field is IGRF version 14. Original TRACERS Spin Sun Coordinates (TSS) are defined as: Z-TSS along the spin-axis; Y-TSS in the direction of Z-TSS cross R-spacecraft-to-Sun; X-TSS completes the right-handed orthogonal set, roughly sunward. TSS_adj is an adjusted coordinate system in which spin axis direction has been corrected to remove spin-tone signals. The residual field is calculated by subtracting IGRF and deltaIGRF from total field to minimize the background field. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' nT NaN 3 ts2_l2_mag_16sps_gei2000_deltab ts2_l2_mag_16sps_gei2000_deltab Master CDF CATDESC: 'DeltaB in Geocentric Equatorial Inertial Coordinates for Epoch J2000'. Master CDF VAR_NOTES: 'DeltaB in Geocentric Equatorial Inertial coordinates. Model Magnetic Field is IGRF version 14. Geocentric Equatorial Inertial Coordinates for Epoch J2000(GEI2000) are defined as: X-GEI2000 aligned with mean equinox for epoch J2000; Z-GEI2000 along the spin axis of the Earth, pointing northward; Y-GEI2000 completes the right-handed orthogonal set.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' nT NaN 3 ts2_l2_mag_16sps_geo_deltab ts2_l2_mag_16sps_geo_deltab Master CDF CATDESC: 'DeltaB in Geographic Coordinates'. Master CDF VAR_NOTES: 'DeltaB in Geographic coordinates. Model Magnetic Field is IGRF version 14. Geographic Coordinates are defined as: Z-GEO along the spin axis of the Earth, pointing northward; X-GEO points to 0 degree longitude reference meridian; Y-GEO completes the right-handed orthogonal set.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' nT NaN 3 ts2_l2_mag_16sps_sm_deltab ts2_l2_mag_16sps_sm_deltab Master CDF CATDESC: 'DeltaB in Solar Magnetic Coordinates'. Master CDF VAR_NOTES: 'DeltaB in Solar Magnetic coordinates. Model Magnetic Field is IGRF version 14. Solar Magnetic Coordinates(SM) are defined as: Z-SM along the vector from the center of the Earth through the north pole of the IGRF-14; Y-SM in the direction of Z-SM cross R-Earth-to-Sun; X-SM completes the right-handed orthogonal set.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' nT NaN 3 ts2_l2_mag_16sps_fac_deltab ts2_l2_mag_16sps_fac_deltab Master CDF CATDESC: 'DeltaB in Field-Aligned Coordinates'. Master CDF VAR_NOTES: 'DeltaB in Field-Aligned Coordinates. Model Magnetic Field is IGRF version 14. Field-Aligned Coordinates (FAC) defined as: Z-FAC along the IGRF 14 model magnetic field at the spacecraft location; Y-FAC in the direction of Z-FAC cross R-Earth-to-spacecraft; X-FAC completes the right-handed orthogonal set. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' nT NaN 3 ts2_l2_mag_16sps_fvc_deltab ts2_l2_mag_16sps_fvc_deltab Master CDF CATDESC: 'DeltaB in Field Velocity Coordinates'. Master CDF VAR_NOTES: 'DeltaB in Field Velocity Coordinates. Model Magnetic Field is IGRF version 14. Field Velocity Coordinates(FVC) defined as: Z-FVC along the IGRF 14 model magnetic field at the spacecraft location; Y-FVC in the direction of Z-FVC cross V-spacecraft-velocity-relative-to-Earth-vector; X-FVC completes the right-handed orthogonal set. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' nT NaN 3 ts2_l2_mag_16sps_tss_b ts2_l2_mag_16sps_tss_b Master CDF CATDESC: 'Full Magnetic Field in TRACERS Spin Sun Adjusted Coordinates'. Master CDF VAR_NOTES: 'Full (non-detrended) magnetometer data in TRACERS Spin Sun Adjusted Coordinates. Original TRACERS Spin Sun Coordinates(TSS) are defined as: Z-TSS along the spin-axis; Y-TSS in the direction of Z-TSS cross R-spacecraft-to-Sun; X-TSS completes the right-handed orthogonal set, roughly sunward. TSS_adj is an adjusted coordinate system in which spin axis directionhas been corrected to remove spin-tone signals.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' nT NaN 3 ts2_l2_mag_16sps_gei2000_b ts2_l2_mag_16sps_gei2000_b Master CDF CATDESC: 'Full Magnetic Field in Geocentric Equatorial Inertial Coordinates for Epoch J2000'. Master CDF VAR_NOTES: 'Full (non-detrended) magnetometer data in Geocentric Equatorial Inertial Coordinates for Epoch J2000(GEI2000). GEI2000 are defined as: X-GEI2000 aligned with mean equinox for epoch J2000; Z-GEI2000 along the spin axis of the Earth, pointing northward; Y-GEI2000 completes the right-handed orthogonal set. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' nT NaN 3 ts2_l2_mag_16sps_geo_b ts2_l2_mag_16sps_geo_b Master CDF CATDESC: 'Full Magnetic Field in Geographic Coordinates'. Master CDF VAR_NOTES: 'Full (non-detrended) magnetometer data in Geographic Coordinates. Z-GEO along the spin axis of the Earth, pointing northward; X-GEO points to 0 degree longitude reference meridian; Y-GEO completes the right-handed orthogonal set.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' nT NaN 3 ts2_l2_mag_16sps_tweaker ts2_l2_mag_16sps_tweaker Master CDF CATDESC: 'Time-Varying Tweaker Matrix'. Master CDF VAR_NOTES: 'Time-varying tweaker matrix that gives final orthogonalization and removes spin-plane offsets. Tweaker takes into account on-orbit variations caused by eclipse entry, etc. TW_ZX is used to remove from the z-sensor any spin-tone signals in phase with the x-sensor. TW_ZY is used to remove from the z-sensor any spin-tone signals in phase with the y-sensor. TW_YY is used to make the y-sensor have the same gain as the x-sensor. TW_YX is used to remove from the y-sensor any spin-tone signals in phase with the x-sensor. O_X is used to remove any DC offsets from the x-sensor. O_Y is used to remove any DC offsets from the y-sensor. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' null NaN 6 ts2_l2_mag_16sps_tss_deltaIGRF ts2_l2_mag_16sps_tss_deltaIGRF Master CDF CATDESC: 'DeltaIGRF in TSS_adj frame'. Master CDF VAR_NOTES: 'Adjustment of IGRF to minimize the background field in TRACERS Spin Sun Adjusted Coordinates. Original TRACERS Spin Sun Coordinates(TSS) are defined as: Z-TSS along the spin-axis; Y-TSS in the direction of Z-TSS cross R-spacecraft-to-Sun; X-TSS completes the right-handed orthogonal set, roughly sunward. TSS_adj is an adjusted coordinate system in which spin axis direction has been corrected to remove spin-tone signals. The residual field is calculated by subtracting IGRF and deltaIGRF from total field to minimize the background field. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' nT NaN 3 ts2_l2_mag_16sps_eclipse_flag ts2_l2_mag_16sps_eclipse_flag Master CDF CATDESC: 'Time-Varying Eclipse Flag'. Master CDF VAR_NOTES: 'Eclipse Flag: 1 indicates eclipse; 0 indicates sunlit. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' null -128 ts2_l2_mag_RotMatGEItoTSS ts2_l2_mag_RotMatGEItoTSS Master CDF CATDESC: 'Rotation matrix from GEI2000 to TSS_adj'. Master CDF VAR_NOTES: 'Rotation matrix from GEI2000 to TSS_adj coordinates. The rotation matrix smoothed using cubic spline interpolation through sunlit intervals only.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_16sps_epoch.' null NaN 9 Time since Jan 1, 2000 ts2_l2_mag_1sps_epoch CATDESC: 'Reference Time for 1sps Orbit Variables. '. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.' ns Scalar Temporal ts2_l2_mag_1sps_gei2000_pos ts2_l2_mag_1sps_gei2000_pos Master CDF CATDESC: 'Spacecraft Position in Geocentric Equatorial Inertial Coordinates for Epoch J2000'. Master CDF VAR_NOTES: 'TRACERS spacecraft position in Geocentric Equatorial Inertial coordinates for Epoch J2000(GEI2000). GEI2000 are defined as: X-GEI2000 aligned with mean equinox for epoch J2000; Z-GEI2000 along the spin axis of the Earth, pointing northward; Y-GEI2000 completes the right-handed orthogonal set. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_1sps_epoch.' km NaN 3 ts2_l2_mag_1sps_geo_pos ts2_l2_mag_1sps_geo_pos Master CDF CATDESC: 'Spacecraft Position in Geographic Coordinates '. Master CDF VAR_NOTES: 'TRACERS spacecraft position in Geographic Coordinates. Geographic Coordinates are defined as: Z-GEO along the spin axis of the Earth, pointing northward; X-GEO points to 0 degree longitude reference meridian; Y-GEO completes the right-handed orthogonal set.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_1sps_epoch.' km NaN 3 ts2_l2_mag_1sps_gei2000_vel ts2_l2_mag_1sps_gei2000_vel Master CDF CATDESC: 'Spacecraft Velocity in Geocentric Equatorial Inertial Coordinates for Epoch J2000'. Master CDF VAR_NOTES: 'TRACERS spacecraft velocity in Geocentric Equatorial Inertial coordinates for Epoch J2000(GEI2000). GEI2000 are defined as: X-GEI2000 aligned with mean equinox for epoch J2000; Z-GEI2000 along the spin axis of the Earth, pointing northward; Y-GEI2000 completes the right-handed orthogonal set. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_1sps_epoch.' km/s NaN 3 ts2_l2_mag_1sps_geo_vel ts2_l2_mag_1sps_geo_vel Master CDF CATDESC: 'Spacecraft Velocity in Geographic Coordinates '. Master CDF VAR_NOTES: 'TRACERS spacecraft velocity in Geographic Coordinates. Geographic Coordinates are defined as: Z-GEO along the spin axis of the Earth, pointing northward; X-GEO points to 0 degree longitude reference meridian; Y-GEO completes the right-handed orthogonal set.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_1sps_epoch.' km/s NaN 3 ts2_l2_mag_1sps_gei2000_igrf ts2_l2_mag_1sps_gei2000_igrf Master CDF CATDESC: 'Model Magnetic Field in Geocentric Equatorial Inertial Coordinates for Epoch J2000'. Master CDF VAR_NOTES: 'Model magnetic field (IGRF version 14) in Geocentric Equatorial Inertial coordinates for Epoch J2000.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_1sps_epoch.' nT NaN 3 ts2_l2_mag_1sps_geo_igrf ts2_l2_mag_1sps_geo_igrf Master CDF CATDESC: 'Model Magnetic Field in Geographic Coordinate. '. Master CDF VAR_NOTES: 'Model magnetic field (IGRF version 14 at the date ofacquisition) in Geographic Coordinates. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_1sps_epoch.' nT NaN 3 Time since Jan 1, 2000 ts2_l2_mag_calib_epoch CATDESC: 'Reference Time for Variables that are Constant over the Orbit'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.' ns Scalar Temporal ts2_l2_mag_calib_coupling_matrix ts2_l2_mag_calib_coupling_matrix Master CDF CATDESC: 'Coupling Matrix'. Master CDF VAR_NOTES: 'Coupling Matrix stored as 9-element array. In math notation M_ij (i=row, j=col), storage order is: tw11, tw12, tw13, tw21, tw22, tw23, tw31, tw32, tw33'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_calib_epoch.' null NaN 9 ts2_l2_mag_calib_offset ts2_l2_mag_calib_offset Master CDF CATDESC: 'offsets'. Master CDF VAR_NOTES: 'offsets stored as 3-element array [o_1, o_2, o_3]'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts2_l2_mag_calib_epoch.' nT NaN 3