Data Access
The TIDE H1 CDF files contain non-mass Total Ion contribution below 411 eV. Data are available for 1996-12-07 through 2008-04-16. Data is accumulated over the 6-second Polar spacecraft spin. The files contain moments density, velocity (Vx and Vy only), temperature (T_perp and T_para) and the spectrograms for both the differential energy flux versus energy (flux averaged over spin angle) and versus spin angle (flux averaged over energy). Support data includes EFI spacecraft potential (adjusted by +2 volts), magnetic field location, spacecraft ram direction, plotting information, and several parameters that describe the instrument status and details about the data processing.
Version:2.6.0
The TIDE H1 CDF files contain non-mass Total Ion contribution below 411 eV. Data are available for 1996-12-07 through 2008-04-16. Data is accumulated over the 6-second Polar spacecraft spin. The files contain moments density, velocity (Vx and Vy only), temperature (T_perp and T_para) and the spectrograms for both the differential energy flux versus energy (flux averaged over spin angle) and versus spin angle (flux averaged over energy). Support data includes EFI spacecraft potential (adjusted by +2 volts), magnetic field location, spacecraft ram direction, plotting information, and several parameters that describe the instrument status and details about the data processing.
| Role | Person | StartDate | StopDate | Note | |
|---|---|---|---|---|---|
| 1. | PrincipalInvestigator GeneralContact | spase://SMWG/Person/Thomas.E.Moore | |||
| 2. | GeneralContact | spase://SMWG/Person/Paul.D.Craven | |||
| 3. | MetadataContact | spase://SMWG/Person/Peggy.Sloan | |||
| 4. | MetadataContact | spase://SMWG/Person/Lee.Frost.Bargatze |
CDAWeb TIDE H1 CDF viewer
CDAWeb TIDE H1 CDF viewer
In CDF via HTTP from SPDF
Web Service to this product using the HAPI interface.
TIDE NSSTC H1 CDFs
NSSDC standard-reference time value (UT) at the center of the accumulation interval.
year, day-of-year, and milliseconds at the center of the accumulation interval.
Total Ion Density
Total Ion Plasma Velocity, Field Aligned, Vx and Vy only
Total Ion Temperature, Parallel and Perpendicular to the Magnetic Field. Direction of magnetic field obtained from onboard values.
Total Ion Energy Spectrogram: Flux values summed or averaged over spin and polar angles. See spect_lim for sum/avg limits, see sum_avg to determine which one was used.
Total Ion Spin Angle Spectrogram. Flux values summed or averaged over energy and polar angle. See spect_lim for sum/avg limits, see sum_avg to determine which one was used.
TIDE Instrument Status (0-off,1-on,2-standby,3-mirrors stepped). Details: 0 - TIDE not operational or data missing, 1 - TIDE fully operational, 2 - TIDE MCP high voltages lowered for passage through radiation belt, 3 - TIDE mirrors stepped down due to high counts, calibration applied to correct counts.
PSI Instrument Status (0-off,1-on,2-standby). Details: 0 - PSI not operation or data missing, 1 - PSI fully operational, 2 - PSI on but keeper not ignited.
Spacecraft Potential: the spacecraft potential is usually taken from the EFI K0 CDF, otherwise it is a constant. The ISTP TIDE CDFs have a +2.0 volt adjustment.
Spacecraft Ram Spin Angle: The spacecraft spin angle corresponding to the position of the projection of the spacecraft velocity vector onto the spin plane (the spacecraft x-y plane).
Spacecraft Ram Polar Angle: The angle measured from the spacecraft z axis to the spacecraft velocity vector.
The azimuth of the projection of the magnetic field in the spacecraft coordinates, measured in the spacecraft x-y plane and from the spacecraft x axis.
The elevation angle of the Magnetic Field measured from the spacecraft x-y coordinate plane.
Particle Observed Energy at the center of each flux bin: the values are fixed and used for energy flux spectrogram plotting. The values are: 0.36, 0.46, 0.55, 0.73, 0.91, 1.18, 1.46, 1.91, 2.36, 3.00, 3.73, 4.73, 5.91, 7.46, 9.37, 11.73, 14.83, 18.66, 23.48, 29.58, 37.30, 47.00, 59.10, 74.30, 93.60, 117.80, 148.35, 186.80, 235.20, 296.00, 373.00
Lower Observed Particle Energy bin boundary: the values are fixed and used for energy flux spectrogram plotting. The values are: 0.31, 0.41, 0.50, 0.64, 0.82, 1.04, 1.32, 1.68, 2.14, 2.68, 3.36, 4.23, 5.32, 6.68, 8.42, 10.55, 13.28, 16.74, 21.07, 26.53, 33.44, 42.15, 53.05, 66.70, 83.95, 105.70, 133.08, 167.58, 211.00, 265.60, 334.50
Upper Observed Particle Energy bin boundary: the values are fixed and used for energy flux spectrogram plotting. The values are: 0.41, 0.50, 0.64, 0.82, 1.04, 1.32, 1.68, 2.14, 2.68, 3.36, 4.23, 5.32, 6.68, 8.42, 10.55, 13.28, 16.74, 21.07, 26.53, 33.44, 42.15, 53.05, 66.70, 83.95, 105.70, 133.08, 167.58, 211.00, 265.60, 334.50, 411.50
Spin Angle at the center of each flux bin: the values are fixed and used for spin angle flux spectrogram plotting. The values are: 5.625, 16.875, 28.125, 41.375, 50.625, 61.875, 73.125, 84.375, 95.625, 106.875, 118.125, 129.375, 140.625, 151.875, 163.125, 174.375, 185.625, 196.875, 208.125, 219.375, 230.625, 241.875, 253.125, 264.375, 275.625, 286.875, 298.125, 309.375, 320.625, 331.875, 343.125, 354.375
Lower Spin Angle bin boundary: the values are fixed and used for spin angle flux spectrogram plotting. The values are: 0.00, 11.25, 22.50, 37.75, 45.00, 56.25, 67.50, 78.75, 90.00, 101.25, 112.50, 123.75, 135.00, 146.25, 157.50, 168.75, 180.00, 191.25, 202.50, 213.75, 225.00, 237.25, 248.50, 259.75, 270.00, 281.25, 292.50, 303.75, 315.00, 326.25, 337.50, 348.75
Upper Spin Angle bin boundary: the values are fixed and used for spin angle flux spectrogram plotting. The values are: 11.25, 22.50, 37.75, 45.00, 56.25, 67.50, 78.75, 90.00, 101.25, 112.50, 123.75, 135.00, 146.25, 157.50, 168.75, 180.00, 191.25, 202.50, 213.75, 225.00, 237.25, 248.50, 259.75, 270.00, 281.25, 292.50, 303.75, 315.00, 326.25, 337.50, 348.75, 360.00
The Total Ion mass to charge ratio used in the moments calculations.
Spins Averaged: the number of spacecraft spins over which the data is averaged for each time period. For ISTP TIDE CDFs, no spin averaging is used, spin_avg=1.
Minimum count subtracted. If sub_min = 1, the minimum count in each spin of data is subtracted as a means of reducing the noise level. If sub_min = 0, no minimum count subtraction is done. For ISTP TIDE CDFs, sub_min=0.
Spectrogram count option: Three options for plotting counts in spectrograms. The counts plotted in the spectrograms can be the sum (1), the average (2), or the maximum (3) of the data whose ranges are specified in spect_lim. For the ISTP TIDE H1 and H0 CDFs, the counts are averaged.
Source of b-field data: The b-field data (mag_az and mag_el) can either be from TIDE telemetry (0) or from MFE high time resolution data (1). For ISTP TIDE CDFs, bfld_source=0.
Moments calculation limits: The range of the energy, spin, and polar angles used to calculate moments. There is a minimum and maximum value for energy (eV) and each angle (degrees). For the ISTP TIDE CDFs, the full ranges are used.
Spectrogram summing/averaging limits: The range of the energy, spin, and polar angles used to create the spectrogram averages. There is a minimum and maximum value for energy (eV) and each angle (degrees). For the ISTP TIDE CDFs, the full ranges are used.
EFI spacecraft potential offset: Correction value added to each EFI spacecraft potential value. +2.0 was used in the ISPT TIDE CDFs.
Mask correction factor: A background mask, generated by averaging data with signal excluded, is subtracted from each six second set of data. Each Mask count is multiplied by the Correction factor in order to avoid over- or under-correction for the mask. In the the TIDE H1 and H0 CDF files, a correction of 0.8 is used.