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/IMAGE/EUV/EquatorialMappedImages/ModifiedData/PT10M NASA NumericalData IMAGE Extreme UltraViolet (EUV) Imager, Modified Data 2 (M2), 10 min Data https://doi.org/10.48322/xsb1-nc45 2026-07-21T12:05:20Z 2021-04-27T15:38:11Z Only known prior ReleaseDate of the metadata 2023-07-30T12:34:56.789Z Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727 2025-05-14T15:38:11Z Added ObservedRegion. JMW 2025-10-02T15:12:00Z 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 2025-12-04T13:29:32Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB 2026-06-26T13:17:50Z Add 'Z' to RevisionEvent:ReleaseDate(s), PublicationDate, TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB 2026-07-21T12:05:20Z Added HelioData InformationURL. JWL The IMAGE extreme ultraviolet (EUV) imager detects resonantly scattered solar EUV photons with a wavelength of 30.4 nm that have been resonantly scattered by singly ionized helium (Sandel et al., 2000). The sizeable database of IMAGE global snapshots from the extreme ultraviolet (EUV) imager provides revolutionary observations of spatial and temporal plasma distributions throughout the plasmasphere. In this study, the IMAGE EUV data have been mapped to the equator using the approach detailed in Gallagher et al. (2005). IMAGE EUV data have been used to create an automated method that locates and extracts the plasmapause. The plasmapause extraction technique searches a set range of possible plasmasphere densities for a maximum gradient in order to identify the magnetic local time, MLT, dependent plasmapause position as a function of time. This description has been adapted from text appearing in Katus et al. (2015). Please acknowledge the Principal Investigator R.M. Katus for use of the Data Katus, Roxanne, M. 2023-01-01T00:00:00Z Space Physics Data Facility spase://SMWG/Person/Roxanne.M.Katus PrincipalInvestigator spase://SMWG/Person/Robert.M.Candey MetadataContact spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact IMAGE Extreme Ultraviolet Imager web site, hosted by LPL, Univ. of Arizona http://euv.lpl.arizona.edu/euv/ Imager for Magnetopause-to-Aurora Global Exploration, IMAGE, satellite Extreme Ultraviolet Imager, instrument information web site, hosted by the Lunar and Planetary Laboratory, University of Arizona NSSDC Master Catalog https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=2000-017A-06 General information concerning the Imager for Magnetopause-to-Aurora Global Exploration, IMAGE, Extreme Ultraviolet, EUV, instrument Katus et al. (2015) IMAGE EUV storm time plasmapause position, Journal of Geophysical Research Space Physics publication https://doi.org/10.1002/2015JA021225 Katus, R.M., D.L. Gallagher, M.W. Liemohn, A.M. Keesee, and L.K. Sarno-Smith, Statistical Storm Time Examination of MLT dependent Plasmapause Location derived from IMAGE EUV, J. Geophys. Res. Space Phys., 120, 5545-5559, 2015, DOI: 10.1002/2015JA021225 HelioData https://helio.data.nasa.gov/dataset/IMAGE_EUV_EquatorialMappedImages_ModifiedData_PT10M The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more. spase://VSPO/NumericalData/IMAGE/EUV/EquatorialMappedImages/ModifiedData/PT10M spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb 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/image/fuv/euv_m2/ Access to Data in CDF Format via ftp from SPDF HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/image/fuv/euv_m2/ Access to Data in CDF Format via http from SPDF CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=IMAGE_M2_EUV&index=sp_phys IMAGE_M2_EUV Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb CDF None https://cdaweb.gsfc.nasa.gov/pub/data/image/fuv/euv_m2/$Y image_m2_euv_$Y$m$d_$v.cdf Please acknowledge the Principal Investigator R.M. Katus. Please acknowledge the Data Providers and CDAWeb when using these Data. spase://SMWG/Repository/NASA/GSFC/SPDF Online Open CDAWeb Programmatic Data Access https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/IMAGE_M2_EUV/clientLibraryExample/ IMAGE_M2_EUV Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Binary Please acknowledge the Principal Investigator R.M. Katus. Please acknowledge the Data Providers and CDAWeb when using these Data. spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb 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 CDAWeb HAPI Server https://cdaweb.gsfc.nasa.gov/hapi IMAGE_M2_EUV Web Service to this product using the HAPI interface. CSV Please acknowledge the Principal Investigator R.M. Katus. Please acknowledge the Data Providers and CDAWeb when using these Data. Calibrated spase://SMWG/Instrument/IMAGE/EUV ImageIntensity 2000-05-04T00:00:00.000Z 2005-12-17T23:59:59.999Z PT10M Earth.Magnetosphere Earth.NearSurface.Plasmasphere Earth.NearSurface.AuroralRegion Earth.NearSurface.PolarCap Epoch Time, TT2000 Epoch Epoch Time Tags in Terrestrial Time 2000, TT2000 PT10M ns 1.0e-9>s Epoch F12.2 1999-12-31T23:59:58.999995365 2006-01-01T00:00:00.000000000 9999-12-31T23:59:59.999999999 Temporal Plasmapause L-shell gradient, spectrogram Time series defined by using: EPOCH Plasmapause_MLTbin Plasmapause L-shell, sharpest gradient from IMAGE EUV ion image data mapped to the equatorial plane, 48 MLT half hour bins, spectrogram format PT10M Re 6.3712e6>m Cartesian SM Spectrogram Plasmapause [Lshell] @ 0.5:.5:24 MLT F12.2 LinearScale 48 Element 1 1 0.500000 Element 2 2 1 Element 3 3 1.50000 Element 4 4 2 Element 5 5 2.50000 Element 6 6 3 Element 7 7 3.50000 Element 8 8 4 Element 9 9 4.50000 Element 10 10 5 Element 11 11 5.50000 Element 12 12 6 Element 13 13 6.50000 Element 14 14 7 Element 15 15 7.50000 Element 16 16 8 Element 17 17 8.50000 Element 18 18 9 Element 19 19 9.50000 Element 20 20 10 Element 21 21 10.5000 Element 22 22 11 Element 23 23 11.5000 Element 24 24 12 Element 25 25 12.5000 Element 26 26 13 Element 27 27 13.5000 Element 28 28 14 Element 29 29 14.5000 Element 30 30 15 Element 31 31 15.5000 Element 32 32 16 Element 33 33 16.5000 Element 34 34 17 Element 35 35 17.5000 Element 36 36 18 Element 37 37 18.5000 Element 38 38 19 Element 39 39 19.5000 Element 40 40 20 Element 41 41 20.5000 Element 42 42 21 Element 43 43 21.5000 Element 44 44 22 Element 45 45 22.5000 Element 46 46 23 Element 47 47 23.5000 Element 48 48 24 0.0001 20.0 -1.0e+31 Component.I Component.J Positional Plasmapause L-shell gradient, from equatorial IMAGE EUV ion images, MLT noon down, dawn right Time series defined by using: EPOCH Mapped_Plasmapause_Grid Plasmapause L-shell, sharpest gradient from IMAGE EUV ion image data mapped to the equatorial plane, MLT noon to the bottom, dawn to the right PT10M Cartesian SM Plasmapause I2 241 241 -32768 Component.I Component.J Positional Plasmapause L-shell gradient, from equatorial IMAGE EUV ion images, MLT noon down, dawn left Time series defined by using: EPOCH Mapped_Plasmapause_Grid_flip_vert Plasmapause L-shell, sharpest gradient from IMAGE EUV ion image data mapped to the equatorial plane, flipped, MLT noon to the bottom, dawn to the left This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW_FLIP_VERT with the following input parameters: Mapped_Plasmapause_Grid. PT10M Cartesian SM Plasmapause I2 241 241 -32768 Component.I Component.J Positional Plasmapause L-shell gradient, from equatorial IMAGE EUV ion images, Movie Time series defined by using: EPOCH Mapped_Plasmapause_Grid_Movie Plasmapause L-shell, sharpest gradient from IMAGE EUV ion image data mapped to the equatorial plane, flipped, MLT noon to the bottom, dawn to the left, Movie format This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW_FLIP_VERT with the following input parameters: Mapped_Plasmapause_Grid. PT10M Cartesian SM Plasmapause I2 LinearScale 241 241 -32768 Component.I Component.J Positional Plasmapause data quality index Time series defined by using: EPOCH Quality_Flag Plasmapause data quality rating index: 1=Low, 2=Medium, 3=High PT10M TimeSeries Quality Flag I2 LinearScale 1 3 -32768 Velocity Magnetic Local Time bins MLTbin Magnetic Local Time, MLT, 48 half hour bins PT10M h 3600>s MLT [hours] F12.2 LinearScale 48 0.0 100.0 -1.0e+31 DirectionAngle.AzimuthAngle Other X-axis coordinates on the equatorial plane X_Axis X-axis coordinates on the equatorial plane, used to define the dependent grid PT10M Re 6.3712e6>m X Axis [Re] F12.2 241 -1.0e+31 Component.I Other Y-axis coordinates on the equatorial plane Y_Axis Y-axis coordinates on the equatorial plane, used to define the dependent grid PT10M Re 6.3712e6>m Y Axis [Re] F12.2 241 -1.0e+31 Component.J Other IMAGE EUV images mapped to the equatorial plane, MLT noon down, dawn right Time series defined by using: EPOCH Equatorial_EUV_Grid IMAGE EUV images mapped to the equatorial plane, MLT noon to the bottom, dawn to the right PT10M cm^-3 1.0e6>m^-3 Cartesian SM IMAGE EUV mapped to z=0 F12.2 LinearScale 241 241 -1.0e+31 Electromagnetic Magnitude Intensity IMAGE EUV images mapped to the equatorial plane, MLT noon down, dawn left Time series defined by using: EPOCH Equatorial_EUV_Grid_flip_vert IMAGE EUV images mapped to the equatorial plane, flipped, MLT noon to the bottom, dawn to the left This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW_FLIP_VERT with the following input parameters: Equatorial_EUV_Grid. PT10M cm^-3 1.0e6>m^-3 Cartesian SM IMAGE EUV mapped to z=0 F12.2 LinearScale 241 241 -1.0e+31 Electromagnetic Magnitude Intensity IMAGE EUV images mapped to the equatorial plane, MLT noon down, dawn left, Movie Time series defined by using: EPOCH Equatorial_EUV_Grid_Movie IMAGE EUV images mapped to the equatorial plane, flipped, MLT noon to the bottom, dawn to the left, Movie format This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW_FLIP_VERT with the following input parameters: Equatorial_EUV_Grid. PT10M cm^-3 1.0e6>m^-3 Cartesian SM IMAGE EUV mapped to z=0 F12.2 LinearScale 241 241 -1.0e+31 Electromagnetic Magnitude Intensity IMAGE EUV images mapped to the equatorial plane, log scale, MLT noon down, dawn left Time series defined by using: EPOCH Equatorial_EUV_Grid_log IMAGE EUV images mapped to the equatorial plane, log scale, flipped, MLT noon to the bottom, dawn to the left This parameter is virtual. It is calculated by calling the function CONVERT_LOG10_FLIP_VERT with the following input parameters: Equatorial_EUV_Grid. PT10M log(cm^-3) (log(cm^-3)+6)>log(m^-3) Cartesian SM IMAGE EUV mapped to z=0 F12.2 LinearScale 241 241 -1.0e+31 Electromagnetic Magnitude Intensity IMAGE EUV images mapped to the equatorial plane, log scale, MLT noon down, dawn left, Movie Time series defined by using: EPOCH Equatorial_EUV_Grid_log_Movie IMAGE EUV images mapped to the equatorial plane, log scale, flipped, MLT noon to the bottom, dawn to the left, Movie format This parameter is virtual. It is calculated by calling the function CONVERT_LOG10_FLIP_VERT with the following input parameters: Equatorial_EUV_Grid. PT10M log(cm^-3) (log(cm^-3)+6)>log(m^-3) Cartesian SM IMAGE EUV mapped to z=0 F12.2 LinearScale 241 241 -1.0e+31 Electromagnetic Magnitude Intensity