2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/ACE/Propagated/PT1M NASA NumericalData ACE Solar Wind Electron, Proton, and Alpha Monitor (SWEPAM) 1-min field and plasma data at bow shock nose ACE at BSN https://doi.org/10.48322/4wkz-c096 2026-04-30T16:33:57Z 2021-03-10T20:13:28Z Only known prior ReleaseDate of the metadata 2025-12-04T13:28:24Z Added MetadataRightsList and RightsList(s). Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB 2026-04-10T09:58:42Z Added new Contact(s). ZCB 2026-04-10T10:03:41Z Added PublicationInfo. ZCB 2026-04-30T16:33:57Z Added DOI. tlk Solar wind magnetic field and plasma data at 1-min resolution created from ACE data shifted to the Earth's bow shock nose (BSN). We acknowledge N.Ness and C. Smith of the MAG team, D. McComas and R. Skoug of the SWEPAM team and J. King and N. Papitashvili of NASA/SPDF and ADNET who created this product. Stone Jr, Edward C. 2026-04-10T10:03:41Z Space Physics Data Facility spase://SMWG/Person/Edward.C.Stone.Jr PrincipalInvestigator spase://SMWG/Person/Joseph.H.King DataProducer spase://SMWG/Person/Natalia.E.Papitashvili DataProducer Readme at SPDF https://spdf.gsfc.nasa.gov/pub/data/omni/high_res_omni/sc_specific/00readme.txt spase://VHO/NumericalData/ACE/Propagated/PT1M spase://VSPO/NumericalData/ACE/Propagated/PT1M spase://SMWG/Repository/NASA/GSFC/SPDF Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products OMNIWeb https://omniweb.gsfc.nasa.gov/form/sc_merge_min1.html OMNIWeb, 1-min ACE Text None spase://SMWG/Repository/NASA/GSFC/SPDF Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/omni/high_res_omni/sc_specific/ FTP path at SPDF HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/omni/high_res_omni/sc_specific/ In CDF via HTTP from SPDF Text None 129 MB P1Y ACE MAG SWEPAM Data at BSN spase://SMWG/Instrument/ACE/MAG spase://SMWG/Instrument/ACE/SWEPAM MagneticField ThermalPlasma 1998-02-05T00:00:00 -P3M PT1M Heliosphere.NearEarth Magnetic field vector, GSE Magnetic field vector, GSE PT1M nT Cartesian GSE 3 Magnetic field vector, GSE Bx(GSE) 1 Column13 nT By(GSE) 2 Column14 nT Bz(GSE) 3 Column15 nT Component Average Magnetic Magnetic field vector, GSM Magnetic field vector, GSM PT1M nT Cartesian GSM 3 Magnetic field vector, GSM Bx(GSM) 1 Column13 nT By(GSM) 2 Column16 nT Bz(GSM) 3 Column17 nT Component Average Magnetic Magnetic field magnitude Column12 Magnetic field magnitude PT1M nT Magnitude Average Magnetic Magnetic field vector standard deviation Column21 Square root of sum of variances of component averages. PT1M nT Variance Component Magnetic Magnetic field magnitude standard deviation Column20 Standard deviation in the average of magnetic field magnitudes PT1M nT Variance Magnitude Magnetic Flow speed Column23 Flow speed of the solar wind PT1M km/s Proton Magnitude Velocity Flow velocity vector Flow velocity vector, 3 GSE cartesian components PT1M km/s Cartesian GSE 3 Flow velocity vector, GSE Vx(GSE) 1 Column24 km/s Vy(GSE) 2 Column25 km/s Vz(GSE) 3 Column26 km/s Proton Vector Velocity Proton density Column27 Proton density PT1M no./cc Proton NumberDensity Proton temperature Column28 Proton scalar temperature PT1M deg K Proton Temperature Spacecraft position Position of ACE spacecraft, GSE cartesian components PT1M Re Cartesian GSE 3 Spacecraft position vector, GSE X(ACE,GSE) 1 Column29 Re Y(ACE,GSE) 2 Column30 Re Z(ACE,GSE) 3 Column31 Re Positional Bow shock nose position Bow shock nose position, as computed from observed data and models, 3 cartesian components PT1M Re Cartesian GSE 3 Bow shock nose (BSN) position vector, GSE X(BSN,GSE) 1 Column32 Re Y(BSN,GSE) 2 Column33 Re Z(BSN,GSE) 3 Column34 Re Other Mean time shift Column08 Time shift from observation time to bow shock nose (BSN) arrival time, as averaged over all 15-16 sec B values with BSN arrival times in minute of interest PT1M sec Other Numbers of points in field and plasma averages Numbers of fine scale points in field and plasma averages PT1M 2 Numbers of fine scale points in field and plasma averages Numbers of fine scale points in field averages 1 Column05 Numbers of fine scale points in plasma averages 2 Column22 Other