Voyager 2 Plasma Spectrometer (PLS) VIPER-Fit Plasma Ion Composition near Jupiter, 96 s Data

https://doi.org/10.48322/mtan-4b60

2023-07-30 12:34:56.789

These Data are from a Re-Analysis of the Voyager Plasma Spectrometer, PLS, Data at Jupiter by the PLS Group at the Laboratory for Atmospheric and Space Physics, LASP, at the University of Colorado. Density, Temperature, and Flow Velocity Fits for total and individual Ions were done using the Voyager Ion PLS Experiment Response, VIPER, Code and Error Analysis as described at http://lasp.colorado.edu/home.mop/missions/voyager/viper/. Fits are determined from processing of the Ion Currents from the A, B, C, and D Cups of the Instrument. As per the Fit Case Variable, one of five different Constraints were used in the VIPER Fits for each 96 s Time Interval: (1) Free Variation of all Parameters (mainly for the cold Ion Torus), (2) Constraint of the Ion Abundances for the five major Species (O+, O++, S+, S++, S+++) to standard Composition as determined from Delamere et al., (2005), (3) fixed Ion Composition and Flow Speed, (4) Cold Blobs in the Plasmasheet where resolved Peaks can be Fit with allowance for some Variance in Composition, (5) Interpolation between Composition of Cold Torus and standard Abundances at 6 RJ from Delamere et al., (2005). Reference: Delamere, P.A., Bagenal, F., and Steffl, A. (2005), Radial Variations in the Io Plasma Torus During the Cassini Era, J. of Geophys. Res., Space Phys., 110(A12), A12223, doi:10.1029/2005JA011251.

J.D. Richardson, F. Bagenal, Please acknowledge the Voyager 1 and Voyager 2 PLS PI, J.D. Richardson, MIT, and the Data Set Producer, F. Bagenal of the University of Colorado. For Public Distribution but Users are advised to contact F. Bagenal on Questions about how the Data were produced.

spase://VSPO/NumericalData/Voyager2/PLS/Jupiter/Composition/VIPER/PT96S

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Open

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None

J.D. Richardson, F. Bagenal, Please acknowledge the Voyager 1 and Voyager 2 PLS PI, J.D. Richardson, MIT, and the Data Set Producer, F. Bagenal of the University of Colorado. For Public Distribution but Users are advised to contact F. Bagenal on Questions about how the Data were produced. Please acknowledge the Data Providers and CDAWeb when using these Data.

Online

Open

CSV

J.D. Richardson, F. Bagenal, Please acknowledge the Voyager 1 and Voyager 2 PLS PI, J.D. Richardson, MIT, and the Data Set Producer, F. Bagenal of the University of Colorado. For Public Distribution but Users are advised to contact F. Bagenal on Questions about how the Data were produced. Please acknowledge the Data Providers and CDAWeb when using these Data.

PT96S

Time since 0 A.D.

Epoch

Interval centered Time Tag rounded to the nearest Millisecond

PT96S

ms

1.0e-3>s

01-Jan-1970 00:00:00.000

31-Dec-2020 23:59:59.000

31-Dec-9999 23:59:59.999

Start Date, Year

Time Series defined by using: EPOCH

YR

Integer Value for Start Date, Integer Year

PT96S

a

31536000>s

1970

2020

-2147483648

Start Date, Fractional Year

Time Series defined by using: EPOCH

FYR

Decimal Start Date equal to the Interger Year plus the Fraction of the Year for the given Observation

PT96S

a

31536000>s

1970.0

2020.0

-1.0e+31

Start Date, Day of Year

Time Series defined by using: EPOCH

DOY

Start Date, Integer Day of Year

PT96S

d

86400>s

0

366

-2147483648

Start Date, Hour of Day

Time Series defined by using: EPOCH

HR

Start Date, Integer Hour of Day

PT96S

h

3600>s

0

23

-2147483648

Start Date, Minute of Hour

Time Series defined by using: EPOCH

MIN

Start Date, Integer Minute of Hour

PT96S

min

60>s

0

59

-2147483648

Start Date, Seconds of Minute

Time Series defined by using: EPOCH

SEC

Start Date, Integer Seconds of Minute

PT96S

s

0

59

-2147483648

Spacecraft Location, Radial Distance, RJ, RHSII

Time Series defined by using: EPOCH

R_J

Spacecraft Location, Radial Distance in Jupiter Radii, Rj, Right-Handed System III, RHSIII, Coordinates

Spacecraft Location in the Right-Handed System III Coordinate Frame (RHSIII) in absolute Distances from the Center of Jupiter. The Radius of Jupiter, RJ, equals 71,492 km.

PT96S

0.0

1000.0

-1.0e+31

Spacecraft Location, Co-Latitude, RHSIII

Time Series defined by using: EPOCH

R_Theta

Spacecraft Location, Co-Latitude in Right-Handed System III, RHSIII, Coordinates

RHSIII refers to the Right-Handed System III Coordinate System for Spacecraft Position in the Jovian Magnetosphere.

PT96S

°

0.0174532925>rad

0.0

180.0

-1.0e+31

Spacecraft Location, East Longitude, RHSIII

Time Series defined by using: EPOCH

R_Phi

Spacecraft Location, East Longitude in Right-Handed System III, RHSIII, Coordinates

RHSIII refers to the Right-Handed System III Coordinate System for Spacecraft Position in the Jovian Magnetosphere.

PT96S

°

0.0174532925>rad

0.0

360.0

-1.0e+31

VIPER Fit Case Number

Time Series defined by using: EPOCH

F_C

Fit Case Number 1-5, designates how the Fit Parameters were handled by the VIPER Code

Methods of how the Parameters being fit were handled by VIPER: 1. Variation of all Parameters (mostly the inner Cold Torus). 2. Constraining the Ion Abundances of the five main Ion Species (O+, O++, S+, S++, S+++) to the standard Composition based on Delamere et al., [2005]. 3. Fixed Ion Composition plus Fixed Flow Speed. 4. cold Blobs in the Plasmasheet where resolved Peaks can be fit allowing some Variations in Composition. 5. Interpolation between the Composition of the Cold Torus and the Standard Composition at 6 Jovian Radii from Delamere et al., [2005].

PT96S

0.0

10.0

-1.0e+31

Radial Flow Velocity, RHSII

Time Series defined by using: EPOCH

V_R

Bulk Plasma Flow Velocity, Radial Component in Right-Handed System III, RHSIII, Coordinates

RHSIII refers to the Right-Handed System III Coordinate System for Spacecraft Position in the Jovian Magnetosphere.

PT96S

km/s

1.0e3>m/s

-1000.0

1000.0

-1.0e+31

Bulk Plasma Flow Velocity, East Longitude, RHSIII

Time Series defined by using: EPOCH

V_Phi

Bulk Plasma Flow Velocity, East Longitude, Phi, in Right-Handed System III, RHSIII, Coordinates

RHSIII refers to the Right-Handed System III Coordinate System for Spacecraft Position in the Jovian Magnetosphere.

PT96S

km/s

1.0e3>m/s

0.0

1000.0

-1.0e+31

Northward Flow Velocity, RHSIII

Time Series defined by using: EPOCH

V_Z

Bulk Plasma Flow Velocity, Northward Component in Right-Handed System III, RHSIII, Coordinates

RHSIII refers to the Right-Handed System III Coordinate System for Spacecraft Position in the Jovian Magnetosphere. Northward is in northern Direction of the Planetary Spin Axis.

PT96S

km/s

1.0e3>m/s

0.0

1000.0

-1.0e+31

Total Ion Charge Density

Time Series defined by using: EPOCH

Ch_Den

Total Sum of Ion Charge Number Densities

PT96S

cm^-3

1.0e6>m^-3

0.0

30000.0

-1.0e+31

H+ Number Density

Time Series defined by using: EPOCH

H_Den

Proton, H+, Ion Partial Number Density

PT96S

cm^-3

1.0e6>m^-3

0.0

10000.0

-1.0e+31

H+ Temperature

Time Series defined by using: EPOCH

H_Tem

Proton, H+, Ion Temperature

PT96S

°K

0.0

10000.0

-1.0e+31

O+ Number Density

Time Series defined by using: EPOCH

O_Den

Singly Charged Oxygen, O+, Ion Partial Number Density

PT96S

cm^-3

1.0e6>m^-3

0.0

10000.0

-1.0e+31

O+ Temperature

Time Series defined by using: EPOCH

O_Tem

Singly Charged Oxygen, O+, Ion Temperature

PT96S

°K

0.0

10000.0

-1.0e+31

O++ Number Density

Time Series defined by using: EPOCH

O_2_Den

Doubly Charged Oxygen, O++, Ion Partial Number Density

PT96S

cm^-3

1.0e6>m^-3

0.0

10000.0

-1.0e+31

O++ Temperature

Time Series defined by using: EPOCH

O_2_Tem

Doubly Charged Oxygen, O++, Ion Temperature

PT96S

°K

0.0

10000.0

-1.0e+31

S+ Number Density

Time Series defined by using: EPOCH

S_Den

Singly Charged Sulfur, S+, Ion Partial Number Density

PT96S

cm^-3

1.0e6>m^-3

0.0

10000.0

-1.0e+31

S+ Temperature

Time Series defined by using: EPOCH

S_Tem

Singly Charged Sulfur, S+, Ion Temperature

PT96S

°K

0.0

10000.0

-1.0e+31

S++ Number Density

Time Series defined by using: EPOCH

S_2_Den

Doubly Charged Sulfur, S++, Ion Partial Number Density

PT96S

cm^-3

1.0e6>m^-3

0.0

10000.0

-1.0e+31

S++ Temperature

Time Series defined by using: EPOCH

S_2_Tem

Doubly Charged Sulfur, S++, Ion Temperature

PT96S

°K

0.0

10000.0

-1.0e+31

S+++ Number Density

Time Series defined by using: EPOCH

S_3_Den

Triply Charged Sulfur, S+++, Ion Partial Number Density

PT96S

cm^-3

1.0e6>m^-3

0.0

10000.0

-1.0e+31

S+++ Temperature

Time Series defined by using: EPOCH

S_3_Tem

Triply Charged Sulfur, S+++, Ion Temperature

PT96S

°K

0.0

10000.0

-1.0e+31

Na+ Number Density

Time Series defined by using: EPOCH

Na_Den

Sodium, Na+, Ion Partial Number Density

PT96S

cm^-3

1.0e6>m^-3

0.0

10000.0

-1.0e+31

Na+ Temperature

Time Series defined by using: EPOCH

Na_Tem

Sodium, Na+, Ion Temperature

PT96S

°K

0.0

10000.0

-1.0e+31

SO2+ Number Density

Time Series defined by using: EPOCH

SO2_Den

Singly Charged Sulfur Dioxide, SO2+, Ion Partial Number Density

PT96S

cm^-3

1.0e6>m^-3

0.0

10000.0

-1.0e+31

SO2+ Temperature

Time Series defined by using: EPOCH

SO2_Tem

Singly Charged Sulfur Dioxide, SO2+, Ion Temperature

PT96S

°K

0.0

10000.0

-1.0e+31

Hot O+ Number Density

Time Series defined by using: EPOCH

O_hot_Den

Hot Oxygen, O+, Ion Partial Number Density

PT96S

cm^-3

1.0e6>m^-3

0.0

10000.0

-1.0e+31

Hot O+ Temperature

Time Series defined by using: EPOCH

O_hot_Tem

Hot Oxygen, O+, Ion Temperature

PT96S

°K

0.0

10000.0

-1.0e+31