{ "metadata": { "description": "The content of this database is based information in HAPI info responses.", "creationDate": "2026-04-11T12:26:12Z", "columnDefinitions": { "id": "Dataset ID", "description": "Dataset description", "title": null, "startDate": null, "stopDate": null, "sampleStartDate": null, "sampleStopDate": null, "cadence": null, "x_cadence_fraction": null, "x_cadence_note": null, "maxRequestDuration": null, "resourceURL": null, "contact": null, "resourceID": null, "additionalMetadata/name": null, "additionalMetadata/contentURL": null } }, "header": [ "id", "title", "description", "startDate", "stopDate", "sampleStartDate", "sampleStopDate", "cadence", "x_cadence_fraction", "x_cadence_note", "maxRequestDuration", "resourceURL", "contact", "resourceID", "additionalMetadata/name", "additionalMetadata/contentURL" ], "body": [ [ "ERG_HEP_L2_OMNIFLUX@0", "High-energy electron experiments (HEP) Level-2 omni flux data, ARASE/ERG) - Takefumi Mitani (ISAS, JAXA)", "", "2017-03-19T23:59:58Z", "2025-03-29T23:59:59Z", "2025-03-28T00:00:06Z", "2025-03-28T23:59:56Z", "PT7.98446S", 0.16036252658836586, "Counts based on variable 'Epoch_H' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/hep/l2/omniflux/2017/erg_hep_l2_omniflux_20170320_v02_00.cdf. The most common cadence, 7984460000 [ns] = PT7.98446S, occurred for 16.0363% of the 1734 timesteps. ", "PT4319500S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_HEP_L2_OMNIFLUX", "Takefumi Mitani @ ISAS, JAXA", "⎵", "SPASE", " .html" ], [ "ERG_HEP_L2_OMNIFLUX@1", "High-energy electron experiments (HEP) Level-2 omni flux data, ARASE/ERG) - Takefumi Mitani (ISAS, JAXA)", "", "2017-03-19T23:59:58Z", "2025-03-29T23:59:59Z", "2025-03-28T00:00:06Z", "2025-03-28T23:59:56Z", "PT7.98446S", 0.16879393266740658, "Counts based on variable 'Epoch_L' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/hep/l2/omniflux/2017/erg_hep_l2_omniflux_20170320_v02_00.cdf. The most common cadence, 7984460000 [ns] = PT7.98446S, occurred for 16.8794% of the 1825 timesteps. ", "PT4319500S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_HEP_L2_OMNIFLUX", "Takefumi Mitani @ ISAS, JAXA", "⎵", "SPASE", " .html" ], [ "ERG_LEPE_L2_OMNIFLUX", "Low-Energy Particle experiments - electron analyzer (LEP-e) Level 2 omni electron flux data, ARASE/ERG - Shiang-Yu Wang (Academia Sinica, Taiwan)", "", "2017-02-03T18:55:03Z", "2025-03-29T23:59:59Z", "2025-05-05T19:34:47Z", "2023-07-01T23:59:28Z", "PT8.000118S", 0.0971649806419383, "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/lepe/l2/omniflux/2018/erg_lepe_l2_omniflux_20180301_v04_01.cdf. The most common cadence, 8000118000 [ns] = PT8.000118S, occurred for 9.7165% of the 778 timesteps. ", "P10D", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_LEPE_L2_OMNIFLUX", "Shiang-Yu Wang @ Academia Sinica, Taiwan", "⎵", "SPASE", " .html" ], [ "ERG_LEPI_L2_OMNIFLUX", "Exploration of Low Energy Particle Ion (LEPi) Experiment 3D ion flux data, ARASE/ERG - Kazushi Asamura (ISAS, Jaxa)", "", "2017-04-01T01:16:44Z", "2024-05-15T23:59:49Z", "2024-05-14T03:07:19Z", "2024-05-14T23:59:49Z", "PT31.969S", 0.22884283246977546, "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/lepi/l2/omniflux/2017/erg_lepi_l2_omniflux_20170401_v03_00.cdf. The most common cadence, 31969000000 [ns] = PT31.969S, occurred for 22.8843% of the 795 timesteps. ", "PT62625M", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_LEPI_L2_OMNIFLUX", "Kazushi Asamura @ ISAS, Jaxa", "⎵", "SPASE", " .html" ], [ "ERG_MEPE_L2_3DFLUX@0", "Exploration of Energization and Radiation in Geospace (ERG) Medium-Energy Particle experiments - electron analyzer (MEP-e) Level 2 3D electron flux data - Satoshi Kasahara (The University of Tokyo)", "", "2017-03-23T00:31:13Z", "2025-03-29T23:59:59Z", "2025-03-28T00:00:10Z", "2025-03-29T00:00:00Z", "PT7.98447S", 0.2850605105257805, "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/mepe/l2/3dflux/2017/erg_mepe_l2_3dflux_20170323_v01_01.cdf. The most common cadence, 7984470000 [ns] = PT7.98447S, occurred for 28.5061% of the 2803 timesteps. ", "PT4319500S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_MEPE_L2_3DFLUX", "Satoshi Kasahara @ The University of Tokyo", "⎵", "SPASE", " .html" ], [ "ERG_MEPE_L2_3DFLUX@1", "Exploration of Energization and Radiation in Geospace (ERG) Medium-Energy Particle experiments - electron analyzer (MEP-e) Level 2 3D electron flux data - Satoshi Kasahara (The University of Tokyo)", "", "2017-03-23T00:31:13Z", "2025-03-29T23:59:59Z", "2025-03-28T00:00:10Z", "2025-03-29T00:00:00Z", "PT0.25S", 0.5963640061394337, "Counts based on variable 'epoch_sp' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/mepe/l2/3dflux/2017/erg_mepe_l2_3dflux_20170323_v01_01.cdf. The most common cadence, 250000000 [ns] = PT0.25S, occurred for 59.6364% of the 187668 timesteps. ", "PT4319500S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_MEPE_L2_3DFLUX", "Satoshi Kasahara @ The University of Tokyo", "⎵", "SPASE", " .html" ], [ "ERG_MEPE_L2_OMNIFLUX", "Medium Energy Particle experiments - electron analyzer (MEP-e) electron omni flux data, ARASE/ERG - Satoshi Kasahara (The University of Tokyo)", "", "2017-03-23T00:31:13Z", "2025-03-29T23:59:59Z", "2025-03-28T00:00:10Z", "2025-03-29T00:00:00Z", "PT7.98447S", 0.2156005288314858, "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/mepe/l2/omniflux/2017/erg_mepe_l2_omniflux_20170323_v01_02.cdf. The most common cadence, 7984470016 [ns] = PT7.98447S, occurred for 21.5601% of the 2120 timesteps. ", "PT4319500S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_MEPE_L2_OMNIFLUX", "Satoshi Kasahara @ The University of Tokyo", "⎵", "SPASE", " .html" ], [ "ERG_MEPI_L2_3DFLUX@0", "Exploration of Energization and Radiation in Geospace (ERG) Medium Energy Particle experiments - ion mass analyzer (MEP-i) Level-2 3D flux data - Shoichiro Yokota (Osaka University)", "", "2017-03-24T04:04:51Z", "2025-03-29T23:59:59Z", "2025-03-28T00:00:02Z", "2025-03-28T23:59:52Z", "PT15.98456S", 0.40645463049579045, "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/mepi/l2/3dflux/2017/erg_mepi_l2_3dflux_20170324_v01_03.cdf. The most common cadence, 15984560000 [ns] = PT15.98456S, occurred for 40.6455% of the 869 timesteps. ", "PT4319500S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_MEPI_L2_3DFLUX", "Shoichiro Yokota @ Osaka University", "⎵", "SPASE", " .html" ], [ "ERG_MEPI_L2_3DFLUX@1", "Exploration of Energization and Radiation in Geospace (ERG) Medium Energy Particle experiments - ion mass analyzer (MEP-i) Level-2 3D flux data - Shoichiro Yokota (Osaka University)", "", "2017-03-24T04:04:51Z", "2025-03-29T23:59:59Z", "2025-03-28T00:00:02Z", "2025-03-28T23:59:52Z", "PT0.50001S", 0.4751775121993981, "Counts based on variable 'epoch_sp' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/mepi/l2/3dflux/2017/erg_mepi_l2_3dflux_20170324_v01_03.cdf. The most common cadence, 500010000 [ns] = PT0.50001S, occurred for 47.5178% of the 16262 timesteps. ", "PT4319500S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_MEPI_L2_3DFLUX", "Shoichiro Yokota @ Osaka University", "⎵", "SPASE", " .html" ], [ "ERG_MEPI_L2_OMNIFLUX", "Medium Energy Particle experiments - ion mass analyzer (MEP-i) 3D ion omni flux data, ARASE/ERG - Shoichiro Yokota (Osaka University)", "", "2017-03-24T04:04:51Z", "2025-03-29T23:59:59Z", "2025-03-28T00:00:02Z", "2025-03-28T23:59:52Z", "PT15.98456S", 0.15341440598690365, "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/mepi/l2/omniflux/2017/erg_mepi_l2_omniflux_20170324_v02_01.cdf. The most common cadence, 15984560013 [ns] = PT15.98456S, occurred for 15.3414% of the 328 timesteps. ", "PT4319500S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_MEPI_L2_OMNIFLUX", "Shoichiro Yokota @ Osaka University", "⎵", "SPASE", " .html" ], [ "ERG_MGF_L2_8SEC", "Magnetic Field Experiment (MGF) Level 2 spin-averaged magnetic field data, ARASE/ERG - Ayako Matsuoka (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan)", "", "2016-12-22T22:26:46Z", "2025-03-29T23:59:59Z", "2026-11-10T00:30:17Z", "2025-03-17T23:59:46Z", "PT7.995264S", 0.038041431261770245, "Counts based on variable 'epoch_8sec' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/mgf/l2/8sec/2017/erg_mgf_l2_8sec_20170313_v03.04.cdf. The most common cadence, 7995264000 [ns] = PT7.995264S, occurred for 3.8041% of the 202 timesteps. ", "P10D", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_MGF_L2_8SEC", "Ayako Matsuoka @ Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan", "⎵", "SPASE", " .html" ], [ "ERG_ORB_L2", "Exploration of Energization and Radiation in Geospace (ERG) Level-2 orbit data (JAXA/ISAS)", "", "2016-10-22T00:40:15Z", "2026-04-07T00:00:00Z", "2026-04-05T00:00:00Z", "2026-04-06T00:00:00Z", "PT6S", 1.0, "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/orb/l2/2016/erg_orb_l2_20161022_v04.cdf. The most common cadence, 6000000000 [ns] = PT6S, occurred for all 13997 timesteps. ", "P50D", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_ORB_L2", " @ JAXA/ISAS", "⎵", "SPASE", " .html" ], [ "ERG_ORB_LPRE_L2", "Exploration of Energization and Radiation in Geospace (ERG) Level-2 long-term predicted orbit data (JAXA/ISAS)", "", "2018-01-01T00:00:00Z", "2028-01-01T00:00:00Z", "2027-12-30T00:00:00Z", "2027-12-31T00:00:00Z", "PT1M", 1.0, "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/orb/lpre/l2/2018/erg_orb_lpre_l2_20180101_v01.cdf. The most common cadence, 60000000000 [ns] = PT1M, occurred for all 1440 timesteps. ", "P50D", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_ORB_LPRE_L2", " @ JAXA/ISAS", "⎵", "SPASE", " .html" ], [ "ERG_ORB_MPRE_L2", "Exploration of Energization and Radiation in Geospace (ERG) Level-2 medium-term predicted orbit data (JAXA/ISAS)", "", "2017-12-05T00:00:00Z", "2026-06-30T00:00:00Z", "2026-06-28T00:00:00Z", "2026-06-29T00:00:00Z", "PT1M", 1.0, "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/orb/mpre/l2/2017/erg_orb_mpre_l2_20171205_v01.cdf. The most common cadence, 60000000000 [ns] = PT1M, occurred for all 1440 timesteps. ", "P50D", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_ORB_MPRE_L2", " @ JAXA/ISAS", "⎵", "SPASE", " .html" ], [ "ERG_ORB_PRE_L2", "Exploration of Energization and Radiation in Geospace (ERG) Level-2 predicted orbit data (JAXA/ISAS)", "", "2016-12-20T00:00:00Z", "2026-04-28T00:00:00Z", "2026-04-26T00:00:00Z", "2026-04-27T00:00:00Z", "PT1M", 1.0, "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/orb/pre/l2/2016/erg_orb_pre_l2_20161220_v01.cdf. The most common cadence, 60000000000 [ns] = PT1M, occurred for all 1440 timesteps. ", "P50D", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_ORB_PRE_L2", " @ JAXA/ISAS", "⎵", "SPASE", " .html" ], [ "ERG_ORB_SPRE_L2", "Exploration of Energization and Radiation in Geospace (ERG) Level-2 short-term predicted orbit data (JAXA/ISAS)", "", "2016-12-20T00:00:00Z", "2026-04-28T00:00:00Z", "2026-04-26T00:00:00Z", "2026-04-27T00:00:00Z", "PT1M", 1.0, "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/orb/spre/l2/2016/erg_orb_spre_l2_20161220_v02.cdf. The most common cadence, 60000000000 [ns] = PT1M, occurred for all 1440 timesteps. ", "P50D", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_ORB_SPRE_L2", " @ JAXA/ISAS", "⎵", "SPASE", " .html" ], [ "ERG_PWE_EFD_L2_E_SPIN@0", "Plasma Wave Experiment (PWE) Electric Field Detector (EFD) Level 2 spectrum data, ARASE/ERG - Yoshiya Kasahara (Kanazawa University)", "", "2017-03-03T00:00:17Z", "2025-03-29T23:59:59Z", "2025-03-28T00:07:41Z", "2025-03-28T23:59:52Z", "PT7.992188S", 0.5922393035747361, "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/pwe/efd/l2/e_spin/2017/erg_pwe_efd_l2_e_spin_20170303_v04_01.cdf. The most common cadence, 7992187500 [ns] = PT7.992188S, occurred for 59.2239% of the 6395 timesteps. ", "PT4296550S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_PWE_EFD_L2_E_SPIN", "Yoshiya Kasahara @ Kanazawa University", "⎵", "SPASE", " .html" ], [ "ERG_PWE_EFD_L2_E_SPIN@1", "Plasma Wave Experiment (PWE) Electric Field Detector (EFD) Level 2 spectrum data, ARASE/ERG - Yoshiya Kasahara (Kanazawa University)", "", "2017-03-03T00:00:17Z", "2025-03-29T23:59:59Z", "2025-03-28T00:07:41Z", "2025-03-28T23:59:52Z", "PT7.98446S", 0.058779968527260945, "Counts based on variable 'Epoch_spb' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/pwe/efd/l2/e_spin/2017/erg_pwe_efd_l2_e_spin_20170303_v04_01.cdf. The most common cadence, 7984459877 [ns] = PT7.98446S, occurred for 5.8780% of the 635 timesteps. ", "PT4296550S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_PWE_EFD_L2_E_SPIN", "Yoshiya Kasahara @ Kanazawa University", "⎵", "SPASE", " .html" ], [ "ERG_PWE_EFD_L2_POT", "Plasma Wave Experiment (PWE) Electric Field Detector (EFD) Level 2 potential data, ARASE/ERG - Yoshiya Kasahara (Kanazawa University)", "", "2017-03-23T00:00:15Z", "2025-03-29T23:59:59Z", "2025-03-28T00:00:14Z", "2025-03-28T23:59:48Z", "PT7.984467S", 0.13055144337527758, "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/pwe/efd/l2/pot/2017/erg_pwe_efd_l2_pot_20170323_v03_02.cdf. The most common cadence, 7984467030 [ns] = PT7.984467S, occurred for 13.0551% of the 1411 timesteps. ", "PT4318700S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_PWE_EFD_L2_POT", "Yoshiya Kasahara @ Kanazawa University", "⎵", "SPASE", " .html" ], [ "ERG_PWE_OFA_L2_SPEC@0", "Plasma Wave Experiment (PWE) Onboard Frequency Analyzer (OFA) Level 2 spectrum data, ARASE/ERG - Yoshiya Kasahara (Kanazawa University)", "", "2017-03-23T00:00:08Z", "2025-03-29T23:59:59Z", "2025-03-27T00:00:08Z", "2025-03-28T00:00:07Z", "PT1S", 0.8680640755573046, "Counts based on variable 'epoch_e132' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/pwe/ofa/l2/spec/2017/erg_pwe_ofa_l2_spec_20170323_v02_03.cdf. The most common cadence, 1000000000 [ns] = PT1S, occurred for 86.8064% of the 74999 timesteps. ", "PT4319950S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_PWE_OFA_L2_SPEC", "Yoshiya Kasahara @ Kanazawa University", "⎵", "SPASE", " .html" ], [ "ERG_PWE_OFA_L2_SPEC@1", "Plasma Wave Experiment (PWE) Onboard Frequency Analyzer (OFA) Level 2 spectrum data, ARASE/ERG - Yoshiya Kasahara (Kanazawa University)", "", "2017-03-23T00:00:08Z", "2025-03-29T23:59:59Z", "2025-03-27T00:00:08Z", "2025-03-28T00:00:07Z", "PT1S", 0.8562929697446701, "Counts based on variable 'epoch_b132' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/pwe/ofa/l2/spec/2017/erg_pwe_ofa_l2_spec_20170323_v02_03.cdf. The most common cadence, 1000000000 [ns] = PT1S, occurred for 85.6293% of the 73982 timesteps. ", "PT4319950S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_PWE_OFA_L2_SPEC", "Yoshiya Kasahara @ Kanazawa University", "⎵", "SPASE", " .html" ], [ "ERG_XEP_L2_OMNIFLUX", "Exploration of Energization and Radiation in Geospace (ERG) Extremely High-Energy Electron Experiment (XEP) Level 2 extremely high energy electron data - Nana Higashio (Space Environment Group, Aerospace Research and Development Directorate, Tsukuba Space Center, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan)", "", "2017-03-19T00:00:02Z", "2025-03-29T23:59:59Z", "2025-03-28T00:00:06Z", "2025-03-28T23:59:40Z", "PT7.984462S", 0.34122871946706146, "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/xep/l2/omniflux/2017/erg_xep_l2_omniflux_20170319_v00_00.cdf. The most common cadence, 7984462000 [ns] = PT7.984462S, occurred for 34.1229% of the 3688 timesteps. ", "PT4318700S", "https://cdaweb.gsfc.nasa.gov/misc/NotesE.html#ERG_XEP_L2_OMNIFLUX", "Nana Higashio @ Space Environment Group, Aerospace Research and Development Directorate, Tsukuba Space Center, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan", "⎵", "SPASE", " .html" ] ] }