1.3.0 spase://VHO/NumericalData/ACE/MAG/HDF_PT1H ACE Magnetic Field 1-hour Level 2 Data in HDF Format 2007-11-27T22:42:06Z ACE MAG Interplanetary Magnetic field, level 2 data, 1-hour averages. Please acknowledge the ACE/MAG instrument team and the ACE Science Center spase://nssdc/person/18 CoInvestigator TechnicalContact spase://nssdc/person/67891 ACE Magnetometer (MAG) Level 2 data Home Page http://www.srl.caltech.edu/ACE/ASC/level2/mag_l2desc.html ACE Science Center site hosting instrument information, data release notes, as well as web utilities for plotting and downloading data Rules of use, and caveats http://www.srl.caltech.edu/ACE/ASC/level2/policy_lvl2.html ACE level 2 data rules of use, and caveats spase://VMO/Repository/ACEScienceCenter Online Open http://www.srl.caltech.edu/ACE/ASC/level2/lvl2DATA_MAG.html FTP repository of 1-hour ACE MAG data in HDF format at ACE Science Center HDF4 mag_level2_data_1hr Level 2 spase://VHO/Instrument/ACE/MAG MagneticField 1997-09-02T00:00:12Z P2M PT1H Heliosphere.Inner Heliosphere.NearEarth The quality of ACE level 2 data is such that it is suitable for serious scientific study. However, to avoid confusion and misunderstanding, it is recommended that users consult with the appropriate ACE team members before publishing work derived from the data. The ACE team has worked hard to ensure that the level 2 data are free from errors, but the team cannot accept responsibility for erroneous data, or for misunderstandings about how the data may be used. This is especially true if the appropriate ACE team members are not consulted before publication. At the very least, preprints should be forwarded to the ACE team before publication. Year year Integer Year of observation. Timestamp marks beginning of interval years 1997 2030 -999.9 %4d Linear Scale Temporal DayofYear day Integer Day of Year of observation (starting from 1). Timestamp marks beginning of interval days 1 366 -999.9 %3d Linear Scale Temporal Hour hr Hour of day of observation (starting from 0). Timestamp marks beginning of interval hours 0 23 -999.9 %2d Linear Scale Temporal Minute min Minute of hour of observation (starting from 0). Timestamp marks beginning of interval minutes 0 59 -999.9 %2d Linear Scale Temporal Second sec Second of minute of observation. Timestamp marks beginning of interval seconds 0.0 60.0 -999.9 %6.3f Linear Scale Temporal FP_Year fp_year Fractional Year of observation. Timestamp marks beginning of interval years 1997.0 2030.0 -999.9 %13.8f Linear Scale Temporal FP_DayofYear fp_doy Fractional Day of Year of observation. Timestamp marks beginning of interval days 1.0 367.0 -999.9 %10.6f Linear Scale Temporal ACE Epoch ACEepoch Epoch of observation - seconds since 00:00:00UT on Jan 1 1996. Timestamp marks beginning of interval seconds 0 1072742400 -999.9 %13.3f Linear Scale Temporal Bmagnitude Bmag Magnetic field magnitude nT 1e-9>T 0.0 500.0 -999.9 %8.3f Linear Scale Average Magnitude Magnetic RTN Latitude (Delta) Delta The angle in degrees with 0 at Br/Bt plane + toward Bn (-90 to +90 degrees), i.e. the RTN latitude Degrees -90.0 90.0 -999.9 %8.3f Linear Scale Average Magnitude Magnetic RTN Longitude (Lambda) Lambda The angle in degrees with 0 at Br and + toward Bt (0 to 360 degrees), i.e. the RTN longitude Degrees -0.0 360.0 -999.9 %8.3f Linear Scale Average Magnitude Magnetic Bx GSE Bgse_x X-component of Magnetic field vector in GSE Cartesian coordinates, 1-hour average nT 1e-9>T -500.0 500.0 -999.9 %8.3f Linear Scale Cartesian GSE Vector Component.X Magnetic By GSE Bgse_y Y-component of Magnetic field vector in GSE Cartesian coordinates, 1-hour average nT 1e-9>T -500.0 500.0 -999.9 %8.3f Linear Scale Cartesian GSE Vector Component.Y Magnetic Bz GSE Bgse_z Z-component of Magnetic field vector in GSE Cartesian coordinates, 1-hour average nT 1e-9>T -500.0 500.0 -999.9 %8.3f Linear Scale Cartesian GSE Vector Component.Z Magnetic deltaB RMS dBrms RMS of magnetic field magnitude (16 sec period) nT 1e-9>T 0.0 10.0 -999.9 %8.3f Linear Scale StandardDeviation Magnitude Magnetic sigma_B sigma_B The variance of |B| over the time interval, in nT. i.e. sigma_B = sqrt(<(|B|-<|B|>)^2>). nT 1e-9>T 0.0 10.0 -999.9 %8.3f Linear Scale StandardDeviation Magnitude Magnetic Bx GSM Bgsm_x X-component of Magnetic field vector in GSM Cartesian coordinates, 1-hour average nT 1e-9>T -500.0 500.0 -999.9 %8.3f Linear Scale Cartesian GSM Vector Component.X Magnetic By GSM Bgsm_y Y-component of Magnetic field vector in GSM Cartesian coordinates, 1-hour average nT 1e-9>T -500.0 500.0 -999.9 %8.3f Linear Scale Cartesian GSM Vector Component.Y Magnetic Bz GSM Bgsm_z Z-component of Magnetic field vector in GSM Cartesian coordinates, 1-hour average nT 1e-9>T -500.0 500.0 -999.9 %8.3f Linear Scale Cartesian GSM Vector Component.Z Magnetic Br RTN Br R-component of Magnetic field vector in RTN coordinates, 1-hour average nT 1e-9>T -500.0 500.0 -999.9 %8.3f Linear Scale Cartesian RTN Vector Component.X Magnetic Bt RTN Bt T-component of Magnetic field vector in RTN coordinates, 1-hour average nT 1e-9>T -500.0 500.0 -999.9 %8.3f Linear Scale Cartesian RTN Vector Component.Y Magnetic Bn RTN Bn N-component of Magnetic field vector in RTN Cartesian coordinates, 1-hour average nT 1e-9>T -500.0 500.0 -999.9 %8.3f Linear Scale Cartesian RTN Vector Component.Z Magnetic Data Quality Flag Quality Data Quality Flag: 0 = good; 1 = S/C Maneuver & subsequent high-nutation period (~4 hr) 2 = Bad data/missing data Flag 0 2 2 %1d Linear Scale Other X-component of S/C position (GSE) pos_gse_x X-component of ACE s/c position in GSE coordinates km -3.0E6 3.0E6 -1.0E31 %11.4e Linear Scale 1e3>m Cartesian GSE Positional Y-component of S/C position (GSE) pos_gse_y Y-component of ACE s/c position in GSE coordinates km -3.0E6 3.0E6 -1.0E31 %11.4e Linear Scale 1e3>m Cartesian GSE Positional Z-component of S/C position (GSE) pos_gse_z Z-component of ACE s/c position in GSE coordinates km -3.0E6 3.0E6 -1.0E31 %11.4e Linear Scale 1e3>m Cartesian GSE Positional X-component of S/C position (GSM) pos_gsm_x X-component of ACE s/c position in GSM coordinates km -3.0E6 3.0E6 -1.0E31 %11.4e Linear Scale 1e3>m Cartesian GSM Positional Y-component of S/C position (GSM) pos_gsm_y Y-component of ACE s/c position in GSM coordinates km -3.0E6 3.0E6 -1.0E31 %11.4e Linear Scale 1e3>m Cartesian GSM Positional Z-component of S/C position (GSM) pos_gsm_z Z-component of ACE s/c position in GSM coordinates km -3.0E6 3.0E6 -1.0E31 %11.4e Linear Scale 1e3>m Cartesian GSM Positional