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/MAG_SWEPAM/PT240S NASA NumericalData ACE MAG SWEPAM 4-min merged IMF+plasma data https://doi.org/10.48322/15we-sn93 2025-12-04T13:28:24Z 2020-07-07T21:14:15 Last known prior metadata Release Date 2022-04-20T00:00:00 ACE: DOI and PublicationInfo added, metadata revised by J.M. Weygand on 2022-04-08, reviewed by LFB 2022-05-17T12:34:56.789 ACE: Updated to SPASE Version 2.4.0, revised by LFB on 2022-05-17 2025-09-30T14:27:18Z Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB 2025-12-04T13:28:24Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB ACE MAG and SWEPAM 4-min merged magnetic field and plasma parameter moments data at NSSDC McComas, D., Smith, C., Skoug, R., Delapp, D., Elliott, H., and Davis, A. 2022-04-27T00:00:00 Space Physics Data Facility spase://SMWG/Person/Norman.F.Ness PrincipalInvestigator spase://SMWG/Person/Charles.W.Smith GeneralContact spase://SMWG/Person/David.J.McComas PrincipalInvestigator spase://SMWG/Person/Ruth.Skoug DataProducer spase://VSPO/NumericalData/P_ACE_HDR_MAG_SWEPAM_4M_MGD spase://VSPO/NumericalData/ACE/MAG_SWEPAM/PT240S 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 FTPBrowser https://omniweb.gsfc.nasa.gov/ftpbrowser/ace_merge.html FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/ace/merged/4_min_merged_mag_plasma/ HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/ace/merged/4_min_merged_mag_plasma/ In CDF via HTTP from SPDF Text spase://SMWG/Instrument/ACE/SWEPAM spase://SMWG/Instrument/ACE/MAG ThermalPlasma MagneticField 1998-02-05T00:00:00 -P5M Data are presently ~5 months delayed PT240S Heliosphere.NearEarth