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: WIND 3DP PESA Moments Data

Resource ID
spase://VHO/NumericalData/WIND/3DP/PT03S Get XML
Name
WIND 3DP PESA Moments Data
Description

WIND 3DP proton and ion onboard calculated moments from the PESA instrument. Calibrated science quality data.

Additional information
WIND 3DP instrument home page

The WIND 3DP instrument home page contains information on the WIND 3DP instruments and their associated data sets.

Acknowledgement

User will acknowledge the WIND 3DP Team in any publication resulting from use of this data.

Contact
Role Person
1. Data producer Peter Schroeder Get XML
Release date
2009-05-20 19:08:30
Repository #1
Name
CDAWeb Data Repository FTP Interface Get XML
Availability
Online
Access rights
Open
URL
WIND 3DP PM data

Location of WIND 3DP PESA moments data files

Format
CDF
Encoding
None
Repository #2
Name
WIND 3DP Data Repository at Berkeley Get XML
Availability
Online
Access rights
Open
URL
WIND 3DP PM data

Location of WIND 3DP PESA moments data files

Format
CDF
Encoding
None
Provider processing level
1
Provider resource name
WIND 3DP PM Data
Provider version
3
Instrument
Hot Plasma and Charged Particles (3DP) Get XML
Measurement type
Thermal plasma
Temporal description
Start date
1994-11-15 12:53:43
Relative stop date
2 days ago
Cadence
3 seconds
Observed regions
Heliosphere.Inner
Heliosphere.NearEarth
Caveats

Users of these data are advised that higher quality, but lower time resolution, proton moment data are available in the Wind/3DP PLSP data product.

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Parameters

Parameter #1

Name
Epoch
Parameter key
Epoch
Description

Number of milliseconds since CDF_EPOCH: 0000-01-01T00:00:00.000.

Units
ms
Conversion to SI units
1e-3>s
Parameter type
Temporal

Parameter #2

Name
Gap flag
Parameter key
GAP
Description

Flag indicating whether data point is preceded by a data gap (0 = no gap, 1 = gap)

Parameter type
Other

Parameter #3

Name
Valid flag
Parameter key
VALID
Description

Flag indicating whether data point is considered valid (0 = invalid, 1 = valid)

Parameter type
Other

Parameter #4

Name
Unix Time
Parameter key
TIME
Description

Time since 1970-01-01T00:00:00Z in seconds

Units
s
Parameter type
Temporal

Parameter #5

Name
Proton Density
Parameter key
P_DENS
Description

Proton number density

Units
1/cm^3
Conversion to SI units
1e6->m^3
Particle type
Proton
Quantity
Number density
Qualifier
Moment
Energy range
Low energy
3
High energy
30000
Units
eV

Parameter #6

Name
Alpha Density
Parameter key
A_DENS
Description

Alpha particles number density

Units
1/cm^3
Conversion to SI units
1e6->m^3
Particle type
AlphaParticle
Quantity
Number density
Qualifier
Moment
Energy range
Low energy
3
High energy
30000
Units
eV

Parameter #7

Name
Residual Proton Velocity Variance
Parameter key
P_TENS
Description

Residual Variance in Proton Velocity in instrument frame

Units
(km/s)^2
Coordinate system
Cartesian
Structure
Size
6
Particle type
Proton
Quantity
Velocity
Qualifier
Moment
Tensor
Variance
Energy range
Low energy
3
High energy
30000
Units
eV

Parameter #8

Name
Residual Alpha Velocity Variance
Parameter key
A_TENS
Description

Residual Variance in Alpha Velocity in instrument frame

Units
(km/s)^2
Coordinate system
Cartesian
Structure
Size
6
Particle type
AlphaParticle
Quantity
Velocity
Qualifier
Moment
Tensor
Variance
Energy range
Low energy
3
High energy
30000
Units
eV

Parameter #9

Name
Proton Velocity
Parameter key
P_VELS
Description

Proton velocity vector in GSE frame

Units
km/s
Conversion to SI units
1e3>m/s
Coordinate system
Cartesian GSE
Structure
Size
3
Elements
Index Name Component
1 P_Vx I
2 P_Vy J
3 P_Vz K
Particle type
Proton
Quantity
Velocity
Qualifier
Moment
Energy range
Low energy
3
High energy
30000
Units
eV

Parameter #10

Name
Alpha Velocity
Parameter key
A_VELS
Description

Alpha velocity vector in GSE frame

Units
km/s
Conversion to SI units
1e3>m/s
Coordinate system
Cartesian GSE
Structure
Size
3
Elements
Index Name Component
1 A_Vx I
2 A_Vy J
3 A_Vz K
Particle type
AlphaParticle
Quantity
Velocity
Qualifier
Moment
Energy range
Low energy
3
High energy
30000
Units
eV

Parameter #11

Name
Proton Temperature
Parameter key
P_TEMP
Description

Proton temperature

Units
eV
Conversion to SI units
1.160445e4>K
Particle type
Proton
Quantity
Temperature
Qualifier
Moment
Energy range
Low energy
3
High energy
30000
Units
eV

Parameter #12

Name
Alpha Temperature
Parameter key
A_TEMP
Description

Alpha temperature

Units
eV
Conversion to SI units
1.160445e4>K
Particle type
AlphaParticle
Quantity
Temperature
Qualifier
Moment
Energy range
Low energy
3
High energy
30000
Units
eV

Parameter #13

Name
Energy Range
Parameter key
E_RANGE
Description

Energy range of moments computation

Units
eV
Conversion to SI units
1.160445e4>K
Structure
Size
2
Description

Lower and upper energy bounds

Particle type
Proton
AlphaParticle
Quantity
Energy
Energy range
Low energy
3
High energy
30000
Units
eV
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SPASE version 2.0.0

Instrument: Hot Plasma and Charged Particles (3DP)

Instrument ID
spase://SMWG/Instrument/WIND/3DP Get XML
Name
Hot Plasma and Charged Particles (3DP)
Alternate name
WIND/3DP
Description

This investigation, a three-dimensional plasma analyzer, is designed to meet the following objectives: (1) to make the first detailed exploration of the interplanetary particle population in the suprathermal energy range between solar wind plasma energies and 100 keV; (2) to study particle acceleration at the sun, in the interplanetary medium, and upstream from the earth; (3) to study the transport of particles in the interplanetary medium in the critical transition energy range between solar wind plasma and cosmic rays; and (4) to study the basic plasma processes occurring in the interplanetary medium, such as the production of radio emission by beam-plasma processes (Type III bursts) and shock waves (Type II), soliton collapse, and solar wind flux. The instrument measures the three-dimensional distribution of plasma and energetic electrons and ions with high energy, angular, and temporal resolution, over the energy range 10 eV to 5 MeV (different ranges for different parts of the instrument). The instrument consists of three detector systems, SST, EESA, and PESA. The SST consists of two arrays of semiconductor detectors (electron and proton), each consisting of six separate telescopes covering an aperture of 108 x 36 deg. EESA and PESA are quadrispherical analyzers (electron and proton, respectively), each mounted on a separate inertia boom. These analyzers, of novel design, provide significant measurements even at the lowest flux levels likely to be encountered by this spacecraft. The symmetrical quadrispherical electrostatic analyzers provide a large geometric factor, a uniform angular response at all polar angles, with about 1-deg angular resolution, and a 360-deg field of view. Microprocessors are employed to provide physically meaningful onboard data processing and compression, as well as flexibility of operation. For example, 10 moments of positive ion and electron distributions are computed every half spin period. In addition, the particles are sorted by pitch angle, using the magnetic field vector obtained directly from the magnetometer on board.

Additional information
NSSDC's Master Catalog

Information about the Hot Plasma and Charged Particles (3DP) experiment on the Wind mission.

Contact
Role Person
1. Principal investigator Prof. Robert P. Lin Get XML
Release date
2009-05-20 21:10:14
Prior ID
spase://SMWG/instrument/1994-071A-01
Instrument type
Quadrispherical Analyser
Investigation name
Hot Plasma and Charged Particles (3DP) on Wind
Observatory
Wind Get XML
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SPASE version 2.0.0

Observatory: Wind

Observatory ID
spase://SMWG/Observatory/WIND Get XML
Name
Wind
Alternate name
ISTP/Wind
GGS/Wind
Wind/ISTP
Wind/GGS
Description

The Wind spacecraft was launched on November 1, 1994 and is the first of two NASA spacecraft in the Global Geospace Science initiative and part of the ISTP Project. The science objectives of the WIND mission are: (1) Provide complete plasma, energetic particle, and magnetic field input for magnetospheric and ionospheric studies; (2) Determine the magnetospheric output to interplanetary space in the up-stream region; (3) Investigate basic plasma processes occurring in the near-Earth solar wind; and (4) Provide baseline ecliptic plane observations to be used in heliospheric latitudes from ULYSSES.

Wind has on-board propulsion and its design lifetime is three to five years, with redundant subsystems. Wind is cylindrical, approximately 2.8 m in diameter by 1.25 m high, with body-mounted solar cells. It has long wire spin-plane antennas, inertial booms, and spin-plane appendages to support sensors. Wind has experiment booms deployed along both Z axes. The spin rate is 20 rpm around an axis within 1 degree of normal to the ecliptic.

Data are stored using on-board tape recorders and are relayed to the Deep Space Network at one of two rates: 5.5 or 11.1 kbps.

For the first nine months of operation, Wind was placed in a double-lunar swingby orbit near the ecliptic plane, with apogee from 80 to 250 Earth radii and perigee of between 5 and 10 Earth radii. In this orbit, lunar gravity assists were used to keep its apogee over the day hemisphere of the Earth, and magnetospheric observations are made. Wind was then inserted into a small "halo" orbit, about the sunward Sun-Earth gravitational equilibrium point (L1), varying from 235 to 265 Earth radii. In this orbit Wind measures the incoming solar wind, magnetic fields and particles continuously and provides an approximately one-hour warning to the other ISTP spacecraft of changes in the solar wind.

In 2001 and 2002 Wind has executed a distant prograde orbit that took it +/- 300 Re leading and legging Earth. This orbit provided a wide baseline to study solar wind structures and correlations. In 2003, Wind reached the L2 Lagrange point 240 Re anti-sunward from Earth providing a 500 Re spatial separation from ACE solar wind observations along with measurements of the distant Earth magnetotail. Since 2004, Wind has been permanently parked in a L1 halo orbit where it continues to provide high-quality solar wind measurements.

Additional information
WIND spacecraft home page
NSSDC's Master Catalog

Information about the Wind mission

Contact
Role Person
1. Project scientist Dr. Adam Szabo Get XML
Release date
2009-05-20 20:00:12
Prior ID
spase://vspo/observatory/84
Location
Region
Earth.Magnetosheath
Earth.Magnetosphere
Earth.Magnetosphere.Magnetotail
Earth.Magnetosphere.Main
Heliosphere.Inner
Heliosphere.NearEarth
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SPASE version 2.0.0

Person: Peter Schroeder

Name
Peter Schroeder
Organization
University of California, Berkeley
Email
peters@ssl.berkeley.edu
Person ID
spase://SMWG/Person/Peter.Schroeder Get XML
Release date
2007-11-29 23:48:47
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SPASE version 2.0.0

Person: Dr. Robert E. McGuire

Name
Dr. Robert E. McGuire
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
mcguire@mail630.gsfc.nasa.gov
Phone
1-301-286-7794
Person ID
spase://SMWG/Person/Robert.E.McGuire Get XML
Release date
2007-05-30 15:25:24
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SPASE version 2.0.0

Person: Prof. Robert P. Lin

Name
Prof. Robert P. Lin
Organization
University of California, Berkeley
Email
rlin@ssl.berkeley.edu
Phone
+1-510-642-1149
Person ID
spase://SMWG/Person/Robert.P.Lin Get XML
Release date
1999-08-18 00:00:00
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SPASE version 2.0.0

Person: Dr. Adam Szabo

Name
Dr. Adam Szabo
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
adam.szabo@nasa.gov
Phone
1-301-286-5726
Person ID
spase://SMWG/Person/Adam.Szabo Get XML
Release date
2007-05-30 15:16:05
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SPASE version 1.2.0

Repository: CDAWeb Data Repository FTP Interface

Repository ID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Get XML
Name
CDAWeb Data Repository FTP Interface
Description

Coordinated Data Analysis Web (CDAWeb) supports not only interactive plotting of variables from multiple instruments on multiple investigations simultaneously on arbitrary, user-defined time-scales. It also supports data retrieval in various formats using its interactive web interface or ftp service.

Additional information
CDAWeb Home Page

Coordinated Data Analysis Web (CDAWeb) home page at Space Physics Data Facility of the NASA Goddard Space Flight Center.

Contact
Role Person
1. Project scientist Dr. Robert E. McGuire Get XML
Release date
2008-08-26 21:14:34
Prior ID
spase://VMO/Repository/CDAWeb
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SPASE version 1.3.0

Repository: WIND 3DP Data Repository at Berkeley

Repository ID
spase://SMWG/Repository/UCB/WIND/3DP Get XML
Name
WIND 3DP Data Repository at Berkeley
Description

WIND 3DP Data Repository at Berkeley

Additional information
WIND 3DP instrument home page

The WIND 3DP instrument home page contains information on the WIND 3DP instruments and their associated data sets.

Contact
Role Person
1. Data producer Peter Schroeder Get XML
Release date
2008-08-26 21:32:28
Prior ID
spase://VHO/Repository/WIND/3DP
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