Data Description

This page summarizes information about the selected resource and its origin based on SPASE metadata.

Table of Contents

  1. Product
  2. Repositories
  3. Instrument
  4. Observatory
  5. Persons

SPASE version 2.0.0

Numerical Data Product: TIDE H0 CDF

Resource ID
spase://VMO/NumericalData/POLAR/TIDE/H0_CDF Get XML
Name
TIDE H0 CDF
Description

The TIDE H0 CDF files contain H+, O+, and He+ data below 411 eV. Data are available for 1996-03-27 through 1996-09-30. Data is accumulated over the 6-second Polar spacecraft spin. For each ion, the files contain moments density, velocity (Vx, Vy, Vz), temperature (T_perp and T_para) and spectogram for differential energy flux versus energy (flux averaged over spin and polar angle), differential energy flux versus spin angle (flux averaged over energy and polar angle), and differential energy flux versus polar angle (flux averaged over energy and spin angle). 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.

Additional information
TIDE NSSTC (MSFC) Home Page
TIDE GSFC Home Page

The TIDE Home Page contains links to all available information about the instrument, its data and software, summary plot viewing, interactive data processing (Custom Plots and Data Dumps), mission information, and documentation about the website, data, and the processing software.

Contact
Role Person
1. Principal investigator
General contact 		Dr. Thomas E. Moore Get XML
2. General contact Dr. Paul D. Craven Get XML
3. Metadata contact Peggy Sloan Get XML
Release date
2009-09-18 00:00:00
Repository #1
Name
NSSDC Get XML
Availability
Online
Access rights
Open
URL
CDAWeb
CDAWeb ftp site
Format
CDF
Repository #2
Name
NSSTC POLAR TIDE Repository Get XML
Availability
Online
Access rights
Open
URL
TIDE MSFC data archive
Format
CDF
Repository #3
Name
GSFC POLAR TIDE Repository Get XML
Availability
Online
Access rights
Open
URL
TIDE GSFC Data Archive
Format
CDF
Processing level
Calibrated
Provider processing level
Level 1
Instrument
Thermal Ion Dynamics Experiment (TIDE) Get XML
Measurement type
Thermal plasma
Temporal description
Start date
1996-03-27 00:00:00
Stop date
1996-12-07 23:59:59
Cadence
6 seconds
Observed regions
Earth.Magnetosphere
Earth.Magnetosphere.Polar
Caveats

TIDE was originally designed to detect mass-resolved ions, H+, O+, He+, and NO+, for 32 energy steps (31 reported), 32 spin angle bins, and 7 polar angle channels. The detection of time-of-flight direct-events deteriorated rapidly early in the mission, reducing the ability to resolve ion masses and resulting in the lost of information in one axis (Z). After 09/30/96, the ion data is of poor quality and as a result, only Total Ions (Stops) are reported starting 12/08/96. Total Ions is the sum over the 7 polar angle channels of the particle counts detected by the Stop microchannel plate (MCP) detectors. The resolution in the 32 energy steps and in the 32 spin angle bins is retained. 1996 H+, O+, and He+ data are reported in the TIDE H0 CDFs. In order to avoid damage to the MCPs, starting 03/27/96 and continuing throughout the rest of the mission, the high voltage on the MCPs is reduced during radiation belt passes.

↑

Parameters

Parameter #1

Name
Time
Parameter key
Epoch
Description

Time of observation

Units
ms
Valid minimum
1996-03-27T00:00:00
Valid maximum
1996-12-07T23:59:59
Fill value
-1.0E31
Parameter type
Temporal

Parameter #2

Name
Time
Parameter key
Time_PB5
Description

Time of observation

Structure
Size
3
Elements
Index Name Units Valid min Valid max Fill value
1 Year year 1995 2020 -2147483648
2 Day of Year (Jan 1 = Day 1) day 1 1 -2147483648
3 Elapsed millisecond of day msec 0 86400000 -2147483648
Parameter type
Temporal

Parameter #3

Name
H+ Ion Density
Parameter key
hp_den
Description

H+ Ion density, only available before 01-Oct-1996.

Units
no/cc
Valid minimum
0.0
Valid maximum
1000000.0
Fill value
-1.0E31
Particle type
Ion
Quantity
Number density
Qualifier
Moment
AtomicNumber
1

Parameter #4

Name
H+ Ion Velocity
Parameter key
hp_vel
Description

H+ Ion Plasma Velocity, Vx, Vy, Vz. For energy, spin angle, and polar angle calculation limits see moments_lim.

Units
km/s
Structure
Size
3
Elements
Index Name
1 H+ Vx B-fld
2 H+ Vy B-fld
3 H+ Vz B-fld
Valid minimum
-1000.0
Valid maximum
1000.0
Fill value
-1.0E31
Particle type
Ion
Quantity
Velocity
Qualifier
Moment
AtomicNumber
1

Parameter #5

Name
H+ Ion Temperature
Parameter key
hp_temp
Description

H+ Ion Temperature, Parallel and Perendicular to the Magnetic Field, available before 01-Oct-1996. Direction of magnetic field obtained from onboard values. See moments_lim for energy, spin angle, and polar angle calculation limits.

Units
eV
Structure
Size
2
Elements
Index Name
1 H+ T-para
2 H+ T-perp
Valid minimum
0.0
Valid maximum
2000.0
Fill value
-1.0E31
Particle type
Ion
Quantity
Temperature
Qualifier
Moment
AtomicNumber
1

Parameter #6

Name
H+ Flux
Parameter key
hp_en
Description

H+ Energy Spectrogram. Only available before 01-Oct-1996. 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.

Units
eV/[cm^2*s*sr*eV]
Structure
Size
31
Valid minimum
0.0
Valid maximum
1.0E21
Fill value
-1.0E31
Particle type
Ion
Quantity
Energy flux
Qualifier
Differential
AtomicNumber
1
Energy range
Low energy
0.31
High energy
411.50
Units
eV
Bins
Bin Band name Low energy High energy
1 Flux at 0.36 eV 0.31 0.41
2 Flux at 0.46 eV 0.41 0.50
3 Flux at 0.55 eV 0.50 0.64
4 Flux at 0.73 eV 0.64 0.82
5 Flux at 0.91 eV 0.82 1.04
6 Flux at 1.18 eV 1.04 1.32
7 Flux at 1.46 eV 1.32 1.68
8 Flux at 1.91 eV 1.68 2.14
9 Flux at 2.36 eV 2.14 2.68
10 Flux at 3.00 eV 2.68 3.36
11 Flux at 3.73 eV 3.36 4.23
12 Flux at 4.73 eV 4.23 5.32
13 Flux at 5.91 eV 5.32 6.68
14 Flux at 7.46 eV 6.68 8.42
15 Flux at 9.37 eV 8.42 10.55
16 Flux at 11.73 eV 10.55 13.28
17 Flux at 14.83 eV 13.28 16.74
18 Flux at 18.66 eV 16.74 21.07
19 Flux at 23.48 eV 21.07 26.53
20 Flux at 29.58 eV 26.53 33.44
21 Flux at 37.30 eV 33.44 42.15
22 Flux at 47.00 eV 42.15 53.05
23 Flux at 59.10 eV 53.05 66.70
24 Flux at 74.30 eV 66.70 83.95
25 Flux at 93.60 eV 83.95 105.70
26 Flux at 117.80 eV 105.70 133.08
27 Flux at 148.35 eV 133.08 167.58
28 Flux at 186.80 eV 167.58 211.00
29 Flux at 235.20 eV 211.00 265.60
30 Flux at 296.00 eV 265.60 334.50
31 Flux at 373.00 eV 334.50 411.50

Parameter #7

Name
H+ Flux
Parameter key
hp_spin
Description

H+ Spin Angle Spectrogram. Only available before 01-Oct-1996. Flux values summed or averaged over energy and polar angle. See spect_lim for for sum/avg limits, see sum_avg to determine which one was used.

Units
eV/[cm^2*s*sr*eV]
Structure
Size
32
Valid minimum
0.0
Valid maximum
1.0E21
Fill value
-1.0E31
Particle type
Ion
Quantity
Energy flux
Qualifier
Differential
AtomicNumber
1
Azimuthal angle range
Low angle
0.00
High angle
360.0
Units
Degrees
Bins
Bin Band name Low angle High angle
1 Flux at 5.625 Deg 0.00 11.25
2 Flux at 16.875 Deg 11.25 22.50
3 Flux at 28.125 Deg 22.50 37.75
4 Flux at 41.375 Deg 37.75 45.00
5 Flux at 50.625 Deg 45.00 56.25
6 Flux at 61.875 Deg 56.25 67.50
7 Flux at 73.125 Deg 67.50 78.75
8 Flux at 84.375 Deg 78.75 90.00
9 Flux at 95.625 Deg 90.00 101.25
10 Flux at 106.875 Deg 101.25 112.50
11 Flux at 118.125 Deg 112.50 123.75
12 Flux at 129.375 Deg 123.75 135.00
13 Flux at 140.625 Deg 135.00 146.25
14 Flux at 151.875 Deg 146.25 157.50
15 Flux at 163.125 Deg 157.50 168.75
16 Flux at 174.375 Deg 168.75 180.00
17 Flux at 185.625 Deg 180.00 191.25
18 Flux at 196.875 Deg 191.25 202.50
19 Flux at 208.125 Deg 202.50 213.75
20 Flux at 219.375 Deg 213.75 225.00
21 Flux at 230.625 Deg 225.00 237.25
22 Flux at 241.875 Deg 237.25 248.50
23 Flux at 253.125 Deg 248.50 259.75
24 Flux at 264.375 Deg 259.75 270.00
25 Flux at 275.625 Deg 270.00 281.25
26 Flux at 286.875 Deg 281.25 292.50
27 Flux at 298.125 Deg 292.50 303.75
28 Flux at 309.375 Deg 303.75 315.00
29 Flux at 320.625 Deg 315.00 326.25
30 Flux at 331.875 Deg 326.25 337.50
31 Flux at 343.125 Deg 337.50 348.75
32 Flux at 354.375 Deg 348.75 360.00

Parameter #8

Name
H+ Flux
Parameter key
hp_polar
Description

H+ Polar Angle Spectrogram. Only available before 01-Oct-1996. Flux values summed or averaged over energy and spin angle. See spect_lim for for sum/avg limits, see sum_avg to determine which one was used.

Units
eV/[cm^2*s*sr*eV]
Structure
Size
7
Valid minimum
0.0
Valid maximum
1.0E21
Fill value
-1.0E31
Particle type
Ion
Quantity
Energy flux
Qualifier
Differential
AtomicNumber
1
Polar angle range
Low angle
0.0
High angle
157.5
Units
Degrees
Bins
Bin Band name Low angle High angle
1 Flux at 11.25 Deg 0.0 22.5
2 Flux at 37.75 Deg 22.5 45.0
3 Flux at 56.25 Deg 45.0 67.5
4 Flux at 78.75 Deg 67.5 90.0
5 Flux at 101.25 Deg 90.0 112.5
6 Flux at 123.75 Deg 112.5 135.0
7 Flux at 146.25 Deg 135.0 157.5

Parameter #9

Name
O+ Ion Density
Parameter key
op_den
Description

O+ Ion Density. Only available before 01-Oct-1996.

Units
no/cc
Valid minimum
0.0
Valid maximum
1000000.0
Fill value
-1.0E31
Particle type
Ion
Quantity
Number density
Qualifier
Moment
AtomicNumber
16

Parameter #10

Name
O+ Ion Velocity
Parameter key
op_vel
Description

O+ Ion Plasma Velocity, Field Aligned, available before 01-Oct-1996 only. For energy, spin angle, and polar angle calculation limits see moments_lim.

Units
km/s
Structure
Size
3
Elements
Index Name
1 O+ Vx B-fld
2 O+ Vy B-fld
3 O+ Vz B-fld
Valid minimum
-1000.0
Valid maximum
1000.0
Fill value
-1.0E31
Particle type
Ion
Quantity
Velocity
Qualifier
Moment
AtomicNumber
16

Parameter #11

Name
O+ Ion Temperature
Parameter key
op_temp
Description

O+ Ion Temperature, Parallel and Perendicular to the Magnetic Field, available before 01-Oct-1996. Direction of magnetic field obtained from onboard values. See moments_lim for energy, spin angle, and polar angle calculation limits.

Units
eV
Structure
Size
2
Elements
Index Name
1 O+ T-para
2 O+ T-perp
Valid minimum
0.0
Valid maximum
2000.0
Fill value
-1.0E31
Particle type
Ion
Quantity
Temperature
Qualifier
Moment
AtomicNumber
16

Parameter #12

Name
O+ Flux
Parameter key
op_en
Description

O+ Energy Spectrogram. Only available before 01-Oct-1996. 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.

Units
eV/[cm^2*s*sr*eV]
Structure
Size
31
Valid minimum
0.0
Valid maximum
1.0E21
Fill value
-1.0E31
Particle type
Ion
Quantity
Energy flux
Qualifier
Differential
AtomicNumber
16
Energy range
Low energy
0.31
High energy
411.50
Units
eV
Bins
Bin Band name Low energy High energy
1 Flux at 0.36 eV 0.31 0.41
2 Flux at 0.46 eV 0.41 0.50
3 Flux at 0.55 eV 0.50 0.64
4 Flux at 0.73 eV 0.64 0.82
5 Flux at 0.91 eV 0.82 1.04
6 Flux at 1.18 eV 1.04 1.32
7 Flux at 1.46 eV 1.32 1.68
8 Flux at 1.91 eV 1.68 2.14
9 Flux at 2.36 eV 2.14 2.68
10 Flux at 3.00 eV 2.68 3.36
11 Flux at 3.73 eV 3.36 4.23
12 Flux at 4.73 eV 4.23 5.32
13 Flux at 5.91 eV 5.32 6.68
14 Flux at 7.46 eV 6.68 8.42
15 Flux at 9.37 eV 8.42 10.55
16 Flux at 11.73 eV 10.55 13.28
17 Flux at 14.83 eV 13.28 16.74
18 Flux at 18.66 eV 16.74 21.07
19 Flux at 23.48 eV 21.07 26.53
20 Flux at 29.58 eV 26.53 33.44
21 Flux at 37.30 eV 33.44 42.15
22 Flux at 47.00 eV 42.15 53.05
23 Flux at 59.10 eV 53.05 66.70
24 Flux at 74.30 eV 66.70 83.95
25 Flux at 93.60 eV 83.95 105.70
26 Flux at 117.80 eV 105.70 133.08
27 Flux at 148.35 eV 133.08 167.58
28 Flux at 186.80 eV 167.58 211.00
29 Flux at 235.20 eV 211.00 265.60
30 Flux at 296.00 eV 265.60 334.50
31 Flux at 373.00 eV 334.50 411.50

Parameter #13

Name
O+ Flux
Parameter key
op_spin
Description

H+ Spin Angle Spectrogram. Only available before 01-Oct-1996. Flux values summed or averaged over energy and polar angle. See spect_lim for for sum/avg limits, see sum_avg to determine which one was used.

Units
eV/[cm^2*s*sr*eV]
Structure
Size
32
Valid minimum
0.0
Valid maximum
1.0E21
Fill value
-1.0E31
Particle type
Ion
Quantity
Energy flux
Qualifier
Differential
AtomicNumber
16
Azimuthal angle range
Low angle
0.00
High angle
360.0
Units
Degrees
Bins
Bin Band name Low angle High angle
1 Flux at 5.625 Deg 0.00 11.25
2 Flux at 16.875 Deg 11.25 22.50
3 Flux at 28.125 Deg 22.50 37.75
4 Flux at 41.375 Deg 37.75 45.00
5 Flux at 50.625 Deg 45.00 56.25
6 Flux at 61.875 Deg 56.25 67.50
7 Flux at 73.125 Deg 67.50 78.75
8 Flux at 84.375 Deg 78.75 90.00
9 Flux at 95.625 Deg 90.00 101.25
10 Flux at 106.875 Deg 101.25 112.50
11 Flux at 118.125 Deg 112.50 123.75
12 Flux at 129.375 Deg 123.75 135.00
13 Flux at 140.625 Deg 135.00 146.25
14 Flux at 151.875 Deg 146.25 157.50
15 Flux at 163.125 Deg 157.50 168.75
16 Flux at 174.375 Deg 168.75 180.00
17 Flux at 185.625 Deg 180.00 191.25
18 Flux at 196.875 Deg 191.25 202.50
19 Flux at 208.125 Deg 202.50 213.75
20 Flux at 219.375 Deg 213.75 225.00
21 Flux at 230.625 Deg 225.00 237.25
22 Flux at 241.875 Deg 237.25 248.50
23 Flux at 253.125 Deg 248.50 259.75
24 Flux at 264.375 Deg 259.75 270.00
25 Flux at 275.625 Deg 270.00 281.25
26 Flux at 286.875 Deg 281.25 292.50
27 Flux at 298.125 Deg 292.50 303.75
28 Flux at 309.375 Deg 303.75 315.00
29 Flux at 320.625 Deg 315.00 326.25
30 Flux at 331.875 Deg 326.25 337.50
31 Flux at 343.125 Deg 337.50 348.75
32 Flux at 354.375 Deg 348.75 360.00

Parameter #14

Name
O+ Flux
Parameter key
op_polar
Description

O+ Polar Angle Spectrogram. Only available before 01-Oct-1996. Flux values summed or averaged over energy and spin angle. See spect_lim for sum/avg limits, see sum_avg to determine which one was used.

Units
eV/[cm^2*s*sr*eV]
Structure
Size
7
Valid minimum
0.0
Valid maximum
1.0E21
Fill value
-1.0E31
Particle type
Ion
Quantity
Energy flux
Qualifier
Differential
AtomicNumber
16
Polar angle range
Low angle
0.0
High angle
157.5
Units
Degrees
Bins
Bin Band name Low angle High angle
1 Flux at 11.25 Deg 0.0 22.5
2 Flux at 37.75 Deg 22.5 45.0
3 Flux at 56.25 Deg 45.0 67.5
4 Flux at 78.75 Deg 67.5 90.0
5 Flux at 101.25 Deg 90.0 112.5
6 Flux at 123.75 Deg 112.5 135.0
7 Flux at 146.25 Deg 135.0 157.5

Parameter #15

Name
He+ Ion Density
Parameter key
hep_den
Description

He+ Ion Density. Only available before 01-Oct-1996.

Units
no/cc
Valid minimum
0.0
Valid maximum
1000000.0
Fill value
-1.0E31
Particle type
Ion
Quantity
Number density
Qualifier
Moment
AtomicNumber
4

Parameter #16

Name
He+ Ion Velocity
Parameter key
hep_vel
Description

He+ Ion Plasma Velocity, Field Aligned, available before 01-Oct-1996 only. For energy, spin angle, and polar angle calculation limits see moments_lim.

Units
km/s
Structure
Size
3
Elements
Index Name
1 He+ Vx B-fld
2 He+ Vy B-fld
3 He+ Vz B-fld
Valid minimum
-1000.0
Valid maximum
1000.0
Fill value
-1.0E31
Particle type
Ion
Quantity
Velocity
Qualifier
Moment
AtomicNumber
4

Parameter #17

Name
He+ Ion Temperature
Parameter key
hep_temp
Description

He+ Ion Temperature, Parallel and Perendicular to the Magnetic Field, available before 01-Oct-1996. Direction of magnetic field obtained from onboard values. See moments_lim for energy, spin angle, and polar angle calculation limits.

Units
eV
Structure
Size
2
Elements
Index Name
1 He+ T-para
2 He+ T-perp
Valid minimum
0.0
Valid maximum
2000.0
Fill value
-1.0E31
Particle type
Ion
Quantity
Temperature
Qualifier
Moment
AtomicNumber
4

Parameter #18

Name
He+ Flux
Parameter key
hep_en
Description

He+ 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.

Units
eV/[cm^2*s*sr*eV]
Structure
Size
31
Valid minimum
0.0
Valid maximum
1.0E21
Fill value
-1.0E31
Particle type
Ion
Quantity
Energy flux
Qualifier
Differential
AtomicNumber
4
Energy range
Low energy
0.31
High energy
411.50
Units
eV
Bins
Bin Band name Low energy High energy
1 Flux at 0.36 eV 0.31 0.41
2 Flux at 0.46 eV 0.41 0.50
3 Flux at 0.55 eV 0.50 0.64
4 Flux at 0.73 eV 0.64 0.82
5 Flux at 0.91 eV 0.82 1.04
6 Flux at 1.18 eV 1.04 1.32
7 Flux at 1.46 eV 1.32 1.68
8 Flux at 1.91 eV 1.68 2.14
9 Flux at 2.36 eV 2.14 2.68
10 Flux at 3.00 eV 2.68 3.36
11 Flux at 3.73 eV 3.36 4.23
12 Flux at 4.73 eV 4.23 5.32
13 Flux at 5.91 eV 5.32 6.68
14 Flux at 7.46 eV 6.68 8.42
15 Flux at 9.37 eV 8.42 10.55
16 Flux at 11.73 eV 10.55 13.28
17 Flux at 14.83 eV 13.28 16.74
18 Flux at 18.66 eV 16.74 21.07
19 Flux at 23.48 eV 21.07 26.53
20 Flux at 29.58 eV 26.53 33.44
21 Flux at 37.30 eV 33.44 42.15
22 Flux at 47.00 eV 42.15 53.05
23 Flux at 59.10 eV 53.05 66.70
24 Flux at 74.30 eV 66.70 83.95
25 Flux at 93.60 eV 83.95 105.70
26 Flux at 117.80 eV 105.70 133.08
27 Flux at 148.35 eV 133.08 167.58
28 Flux at 186.80 eV 167.58 211.00
29 Flux at 235.20 eV 211.00 265.60
30 Flux at 296.00 eV 265.60 334.50
31 Flux at 373.00 eV 334.50 411.50

Parameter #19

Name
He+ Flux
Parameter key
hep_spin
Description

He+ Spin Angle Spectrogram. Only available before 01-Oct-1996. Flux values summed or averaged over energy and polar angle. See spect_lim for for sum/avg limits, see sum_avg to determine which one was used.

Units
eV/[cm^2*s*sr*eV]
Structure
Size
32
Valid minimum
0.0
Valid maximum
1.0E21
Fill value
-1.0E31
Particle type
Ion
Quantity
Energy flux
Qualifier
Differential
Azimuthal angle range
Low angle
0.00
High angle
360.0
Units
Degrees
Bins
Bin Band name Low angle High angle
1 Flux at 5.625 Deg 0.00 11.25
2 Flux at 16.875 Deg 11.25 22.50
3 Flux at 28.125 Deg 22.50 37.75
4 Flux at 41.375 Deg 37.75 45.00
5 Flux at 50.625 Deg 45.00 56.25
6 Flux at 61.875 Deg 56.25 67.50
7 Flux at 73.125 Deg 67.50 78.75
8 Flux at 84.375 Deg 78.75 90.00
9 Flux at 95.625 Deg 90.00 101.25
10 Flux at 106.875 Deg 101.25 112.50
11 Flux at 118.125 Deg 112.50 123.75
12 Flux at 129.375 Deg 123.75 135.00
13 Flux at 140.625 Deg 135.00 146.25
14 Flux at 151.875 Deg 146.25 157.50
15 Flux at 163.125 Deg 157.50 168.75
16 Flux at 174.375 Deg 168.75 180.00
17 Flux at 185.625 Deg 180.00 191.25
18 Flux at 196.875 Deg 191.25 202.50
19 Flux at 208.125 Deg 202.50 213.75
20 Flux at 219.375 Deg 213.75 225.00
21 Flux at 230.625 Deg 225.00 237.25
22 Flux at 241.875 Deg 237.25 248.50
23 Flux at 253.125 Deg 248.50 259.75
24 Flux at 264.375 Deg 259.75 270.00
25 Flux at 275.625 Deg 270.00 281.25
26 Flux at 286.875 Deg 281.25 292.50
27 Flux at 298.125 Deg 292.50 303.75
28 Flux at 309.375 Deg 303.75 315.00
29 Flux at 320.625 Deg 315.00 326.25
30 Flux at 331.875 Deg 326.25 337.50
31 Flux at 343.125 Deg 337.50 348.75
32 Flux at 354.375 Deg 348.75 360.00

Parameter #20

Name
He+ Flux
Parameter key
hep_polar
Description

He+ Polar Angle Spectrogram. Only available before 01-Oct-1996. 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

Units
eV/[cm^2*s*sr*eV]
Structure
Size
7
Valid minimum
0.0
Valid maximum
1.0E21
Fill value
-1.0E31
Particle type
Ion
Quantity
Energy flux
Qualifier
Differential
AtomicNumber
4
Polar angle range
Low angle
0.0
High angle
157.5
Units
Degrees
Bins
Bin Band name Low angle High angle
1 Flux at 11.25 Deg 0.0 22.5
2 Flux at 37.75 Deg 22.5 45.0
3 Flux at 56.25 Deg 45.0 67.5
4 Flux at 78.75 Deg 67.5 90.0
5 Flux at 101.25 Deg 90.0 112.5
6 Flux at 123.75 Deg 112.5 135.0
7 Flux at 146.25 Deg 135.0 157.5

Parameter #21

Name
TIDE Instrument Status
Parameter key
tide_stat
Description

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.

Valid minimum
0
Valid maximum
3
Fill value
255
Parameter type
Other

Parameter #22

Name
PSI Instrument Status
Parameter key
psi_stat
Description

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.

Valid minimum
0
Valid maximum
2
Fill value
255
Parameter type
Other

Parameter #23

Name
Spacecraft Potential
Parameter key
sc_pot
Description

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.

Units
Volts
Valid minimum
-1000.0
Valid maximum
1000.0
Fill value
-1.0E31
Parameter type
Other

Parameter #24

Name
Spacecraft Ram Spin Angle
Parameter key
ram_spin
Description

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).

Units
Deg
Valid minimum
0.0
Valid maximum
360.0
Fill value
-1.0E31
Parameter type
Other

Parameter #25

Name
Spacecraft Ram Polar Angle
Parameter key
ram_polar
Description

Spacecraft Ram Polar Angle: The angle measured from the spacecraft z axis to the spacecraft velocity vector.

Units
Deg
Valid minimum
0.0
Valid maximum
180.0
Fill value
-1.0E31
Parameter type
Other

Parameter #26

Name
B-Field Azimuth
Parameter key
mag_az
Description

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.

Units
Deg
Valid minimum
0.0
Valid maximum
360.0
Fill value
-1.0E31
Parameter type
Other

Parameter #27

Name
B-Field Elevation
Parameter key
mag_el
Description

The elevation angle of the Magnetic Field measured from the spacecraft x-y coordinate plane.

Units
Deg
Valid minimum
0.0
Valid maximum
180.0
Fill value
-1.0E31
Parameter type
Other

Parameter #28

Name
Obs.Energy
Parameter key
energy_cent
Description

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

Units
eV
Structure
Size
31
Parameter type
Other

Parameter #29

Name
Lower Energy
Parameter key
energy_low
Description

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

Units
eV
Structure
Size
31
Parameter type
Other

Parameter #30

Name
Upper Energy
Parameter key
energy_up
Description

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

Units
eV
Structure
Size
31
Parameter type
Other

Parameter #31

Name
Spin Angle
Parameter key
spin_cent
Description

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

Units
degrees
Structure
Size
32
Parameter type
Other

Parameter #32

Name
Lower Spin Angle
Parameter key
spin_low
Description

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

Units
degrees
Structure
Size
32
Parameter type
Other

Parameter #33

Name
Upper Spin Angle
Parameter key
spin_up
Description

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

Units
degrees
Structure
Size
32
Parameter type
Other

Parameter #34

Name
Polar Angle
Parameter key
polar_cent
Description

Polar Angle at the center of each flux bin: the values are fixed and used for polar angle flux spectrogram plotting. The values are: 11.25, 37.75, 56.25, 78.75, 101.25, 123.75, 146.25

Units
degrees
Structure
Size
7
Parameter type
Other

Parameter #35

Name
Lower Polar Angle
Parameter key
polar_low
Description

Lower Polar Angle bin boundary: the values are fixed and used for polar angle flux spectrogram plotting. The values are: 0.0, 22.5, 45.0, 67.5, 90.0, 112.5, 135.0

Units
degrees
Structure
Size
7
Parameter type
Other

Parameter #36

Name
Upper Polar Angle
Parameter key
polar_up
Description

Upper Polar Angle bin boundary: the values are fixed and used for polar angle flux spectrogram plotting. The values are: 22.5, 45.0, 67.5, 90.0, 112.5, 135.0, 157.5

Units
degrees
Structure
Size
7
Parameter type
Other

Parameter #37

Name
Spins Averaged
Parameter key
spin_avg
Description

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.

Valid minimum
1
Valid maximum
300
Fill value
65535
Parameter type
Other

Parameter #38

Name
Minimum count subtracted
Parameter key
sub_min
Description

Minimum count subtracted. If sub_min = 1, the minimum count in each spin of data was subtracted as a means of reducing the noise level. If sub_min = 0, no minimum count subtraction was done.

Valid minimum
0
Valid maximum
1
Fill value
255
Parameter type
Other

Parameter #39

Name
spectrogram count option
Parameter key
sum_avg
Description

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.

Valid minimum
1
Valid maximum
3
Fill value
255
Parameter type
Other

Parameter #40

Name
source of b-field data
Parameter key
bfld_source
Description

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.

Valid minimum
0
Valid maximum
1
Fill value
255
Parameter type
Other

Parameter #41

Name
moments calculation limits
Parameter key
moments_lim
Description

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.

Structure
Size
2 3
Parameter type
Other

Parameter #42

Name
spectrogram summing limits
Parameter key
spect_lim
Description

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.

Structure
Size
2 3
Parameter type
Other

Parameter #43

Name
EFI spacecraft potential offset
Parameter key
scpot_off
Description

EFI spacecraft potential offset: Correction value added to each EFI spacecraft potential value. +2.0 was used in the ISPT TIDE H1 and H0 CDFs.

Units
Volts
Valid minimum
0
Valid maximum
30
Fill value
0
Parameter type
Other

Parameter #44

Name
Mask correction factor
Parameter key
mask_corr
Description

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.

Valid minimum
0
Valid maximum
10
Fill value
1
Parameter type
Other
↑

SPASE version 2.0.0

Instrument: Thermal Ion Dynamics Experiment (TIDE)

Instrument ID
spase://SMWG/Instrument/POLAR/TIDE Get XML
Name
Thermal Ion Dynamics Experiment (TIDE)
Alternate name
TIDE
Description

This investigation, TIDE (thermal ion dynamics experiment), is designed to study the origin, transport, energization, storage, and loss of low energy ions in the earth's magnetosphere. The instrument measures the distribution function of ions in the energy range 0-100 eV and the mass range 1 to 16 u. A complete ion distribution is obtained over each spin of the spacecraft (nominally 6 s). The instrument consists of two sensor assemblies and an electronics assembly. The two sensors are mounted on opposite edges of the spacecraft, and each has a field of view of 170 deg. Control of the instrument by an onboard microprocessor permits programmable sequences of angle, energy, and mass to be selected for specific studies. The angular acceptance is in 10 x 10 deg windows covering a 120-deg fan in the plane containing the spin axis, and in 2- x 2-deg windows on 4-deg centers covering a 30-deg fan in the plane containing the spin axis. Energy resolution is nominally 20%, and mass resolution is 25% for masses 1-4 u, 8% for masses 4-16 u, and 3% for masses 16-64 u.

Additional information
NSSDC's Master Catalog

Information about the Thermal Ion Dynamics Experiment (TIDE) experiment on the Polar mission.

Contact
Role Person
1. Principal investigator Dr. Thomas E. Moore Get XML
Release date
2009-05-20 21:10:13
Instrument type
Energetic Particle Instrument
Investigation name
Thermal Ion Dynamics Experiment (TIDE) on Polar
Observatory
POLAR Get XML
↑

SPASE version 2.0.0

Observatory: POLAR

Observatory ID
spase://SMWG/Observatory/POLAR Get XML
Name
POLAR
Alternate name
Polar Plasma Laboratory
GGS/Polar
ISTP/Polar
Description

POLAR is one of four spacecraft in the Global Geospace Science (GGS) program. These are among the six spacecraft in the International Solar Terrestrial Physics (ISTP) program. POLAR provides multi-wavelength imaging of the aurora, measuring plasma entry into the polar magnetosphere and geomagnetic tail, the flow of plasmas to and from the ionosphere, and the deposition of particle energy in the ionosphere and upper atmosphere. POLAR has on-board propulsion systems and a design lifetime of three to five years, with redundant subsystems. POLAR is cylindrical, approximately 2.8 m in diameter by 1.25 m high (plus 1.25 m for its two despun platforms), with body-mounted solar cells, weighs 1250 kg and uses 333 W of power. The spin rate is 10 rpm around an axis approximately normal to the orbital plane. It has long wire spin-plane antennas, inertial booms, and spin-plane appendages to support sensors. POLAR has two despun gimbaled instrument platforms, and booms are deployed along both Z axes. Data are stored using on-board tape recorders and are relayed to the Deep Space Network at 600 kbps maximum (250 kbps nominal) although the average real-time data rate for POLAR is 41.6 kbps. POLAR has a 22.6-h polar orbit (90 deg inclination), with perigee and apogee of 11,500 and 57,000 km. Polar was launched to observe the polar magnetosphere and, as its orbit has precessed with time, has observed the equatorial inner magnetosphere and is now carrying out an extended period of southern hemisphere coverage. Details on the POLAR mission and instrumentation are provided in Space Science Reviews (Vol. 71, Nos. 1-4, 1995) and reprinted in The Global Geospace Mission, edited by C. T. Russell (Kluwer, 1995).

Additional information
NASA Polar Project

Web site of NASA Polar Mission, including overview, data products, FTP to the data, publications, educational outreach, orbits, instrument descriptions, contacts, news archive, and ISTP archive.

NSSDC's Master Catalog

Information about the Polar mission

Contact
Role Person
1. Project scientist Dr. John B. Sigwarth Get XML
Release date
2009-05-20 20:00:12
Prior ID
spase://vspo/observatory/67
Location
Region
Earth.Magnetosphere
Earth.Magnetosphere.Polar
Earth.Magnetosphere.RadiationBelt
↑

SPASE version 2.0.0

Person: Dr. Thomas E. Moore

Name
Dr. Thomas E. Moore
Organization
GSFC-Code 612.2
Person ID
spase://SMWG/Person/Thomas.E.Moore Get XML
↑

SPASE version 2.0.0

Person: Dr. Paul D. Craven

Name
Dr. Paul D. Craven
Organization
NASA Marshall Space Flight Center
Person ID
spase://SMWG/Person/Paul.D.Craven Get XML
↑

SPASE version 2.0.0

Person: Peggy Sloan

Name
Peggy Sloan
Organization
National Space Science and Technology Center (NSSTC)
Person ID
spase://SMWG/Person/Peggy.Sloan Get XML
Release date
2009-07-24 01:35:44
↑

SPASE version 2.0.0

Person: Dr. Edwin J. Grayzeck, Jr.

Name
Dr. Edwin J. Grayzeck, Jr.
Organization
GSFC-Code 690.1
Person ID
spase://SMWG/Person/Edwin.J.Grayzeck.Jr Get XML
↑

SPASE version 2.0.0

Person: Dr. Edwin V. Bell, II

Name
Dr. Edwin V. Bell, II
Organization
GSFC-Code 690.1
Person ID
spase://SMWG/Person/Edwin.V.Bell.II Get XML
↑

SPASE version 2.0.0

Person: Dr. John B. Sigwarth

Name
Dr. John B. Sigwarth
Organization
NASA Goddard Space Flight Center
Address
NASA/GSFC, Code 674, Greenbelt, MD 20771
Email
pwg_project@nssdc.nasa.gov
Person ID
spase://SMWG/Person/John.B.Sigwarth Get XML
Release date
2007-12-04 23:11:21
↑

SPASE version 1.2.0

Repository: NSSDC

Repository ID
spase://SMWG/Repository/NASA/NSSDC Get XML
Name
NSSDC
Description

National Space Science Data Center

Contact
Role Person
1. General contact Dr. Edwin J. Grayzeck, Jr. Get XML
2. General contact Dr. Edwin V. Bell, II Get XML
Release date
2008-08-26 21:02:30
Prior ID
spase://SMWG/Repository/NSSDC
↑

SPASE version 2.0.0

Repository: NSSTC POLAR TIDE Repository

Repository ID
spase://SMWG/Repository/NASA/NSSTC/POLAR.TIDE Get XML
Name
NSSTC POLAR TIDE Repository
Description

Polar TIDE Resident Archive web server and data archive located at the National Space Science and Technology Center (NSSTC) in Huntsville, Alabama. There is a mirror site at GSFC, see spase://SMWG/Repository/NASA/GSFC/POLAR.TIDE

Additional information
TIDE Home Page

The Polar Thermal Ion Dynamics Experiment (TIDE) Home Page contains links to web pages that allow users to view summary plots of the entire mission (View Summary Plots and View Thumbnails); analyze, plot, and dump data (Custom Plots and Data Dumps); download processing software and datafiles; plus links to mission operations, documentation, publications, data archives, and the instrument description.

Contact
Role Person
1. Principal investigator Dr. Thomas E. Moore Get XML
2. General contact Dr. Paul D. Craven Get XML
3. Metadata contact Peggy Sloan Get XML
Release date
2009-09-18 00:00:00
Association
spase://SMWG/Repository/NASA/GSFC/POLAR.TIDE Get XML
Access URL
TIDE Data Archive

The TIDE Data Archive contains all TIDE data and plot files. The files can most easily be accessed through the appropriate links on the TIDE website but they can be accessed directly. See http://tideuvira.nsstc.nasa.gov/tide/data_archive_desc.html for the location of the files used in the TIDE level-zero processing software (level-zero, orbit, attitude, mask, and spacecraft potential) and the location of the spectrogram summary plot files (gif, jpeg, and pdf). The archive contains copies of the TIDE H1and H0 CDF files (also available at the CDAWeb). Documentation, software, and miscellaneous files are also kept on the archive.

↑

SPASE version 2.0.0

Repository: GSFC POLAR TIDE Repository

Repository ID
spase://SMWG/Repository/NASA/GSFC/POLAR.TIDE Get XML
Name
GSFC POLAR TIDE Repository
Description

Polar TIDE web server and data archive located at GSFC. There is a mirror site located at the National Space Science and Technology Center (NSSTC) in Huntsville, Alabama, see spase://SMWG/Repository/NASA/NSSTC/POLAR.TIDE.

Additional information
TIDE Home Page

The Polar Thermal Ion Dynamics Experiment (TIDE) Home Page contains links to web pages that allow users to view summary plots of the entire mission (View Summary Plots and View Thumbnails); analyze, plot, and dump data (Custom Plots and Data Dumps); download processing software and datafiles; plus links to mission operations, documentation, publications, data archives, and the instrument description.

Contact
Role Person
1. Principal investigator Dr. Thomas E. Moore Get XML
2. General contact Dr. Paul D. Craven Get XML
3. Metadata contact Peggy Sloan Get XML
Release date
2009-09-18 00:00:00
Association
spase://SMWG/Repository/NASA/NSSTC/POLAR.TIDE Get XML
Access URL
TIDE Data Archive

The TIDE Data Archive contains all TIDE data and plot files. The files can most easily be accessed through the appropriate links on the TIDE website but they can be accessed directly. See http://tide.gsfc.nasa.gov/data_archive_desc.shtml for the location of the files used in the TIDE level-zero processing software (level-zero, orbit, attitude, mask, and spacecraft potential) and the location of the spectrogram summary plot files (gif, jpeg, and pdf). The archive contains copies of the TIDE H1and H0 CDF files (also available at the CDAWeb). Documentation, software, and miscellaneous files are also kept on the archive.

↑