HPDE.io

SAMPEX Polar-Cap-Averaged Fluxes, all instruments

ResourceID
spase://NASA/NumericalData/SAMPEX/PCA/PT48M

Description

This data set contains 17 differential fluxes of
protons (mainly), helium ions, Z.GE.6 ions, and electrons, plus one integral
flux of protons and electrons, as averaged over polar cap passes of the
SAMPEX spacecraft. A polar cap pass covers the time poleward of geomagnetic
latitude 70 deg. (Not all orbits have two polar cap passes.). For any
given species, the fluxes typically come from more than one of the sensors
(LICA, HILT, MAST, PET). Hence the inclusion of all instruments' data in
each single record. Differential fluxes are those for (mainly) protons
(Z.GE.1 channels at 5-12 and 19-27 MeV/n), helium ions (0.50-6.6, 4-9, 8-15,
9-38 MeV/n), Z.GE.6 ions (0.49-8.3, 8-42, 19.3-22.8, 22.8-31.0, 31.0-51.7,
41-220, 51.7-76.2, 76.2-113, 113-156 MeV/n), and electrons (1.5-6.0 MeV
from PET only). One LICA channel measured integral fluxes of ions .GT. 0.8 MeV/n
plus electrons .GT. 0.6 MeV). Data available for each polar cap pass are time
tags of the begin and end points of the averaging interval, the fluxes,
statistical uncertainties in the fluxes, instrument-specific flags, and a
flag indicating a north or south polar cap pass. Data are organized in two
different ways. Monthly ~500-KB ASCII files with records organized by instrument
are available from the SAMPEX Data Center at Caltech and from nssdcftp at
GSFC/SPDF, while monthly ~260 KB CDF-formatted files with records organized by
species are available from the ftp area underlying CDAWeb. The parameter level
information given below in this descriptor corresponds to the CDAWeb organization
of data. Format information for the ASCII version is given in the Information
URL of this descriptor.

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Details

Version:2.3.2

NumericalData

ResourceID
spase://NASA/NumericalData/SAMPEX/PCA/PT48M
ResourceHeader
ResourceName
SAMPEX Polar-Cap-Averaged Fluxes, all instruments
ReleaseDate
2021-04-27 15:38:11Z
Description

This data set contains 17 differential fluxes of
protons (mainly), helium ions, Z.GE.6 ions, and electrons, plus one integral
flux of protons and electrons, as averaged over polar cap passes of the
SAMPEX spacecraft. A polar cap pass covers the time poleward of geomagnetic
latitude 70 deg. (Not all orbits have two polar cap passes.). For any
given species, the fluxes typically come from more than one of the sensors
(LICA, HILT, MAST, PET). Hence the inclusion of all instruments' data in
each single record. Differential fluxes are those for (mainly) protons
(Z.GE.1 channels at 5-12 and 19-27 MeV/n), helium ions (0.50-6.6, 4-9, 8-15,
9-38 MeV/n), Z.GE.6 ions (0.49-8.3, 8-42, 19.3-22.8, 22.8-31.0, 31.0-51.7,
41-220, 51.7-76.2, 76.2-113, 113-156 MeV/n), and electrons (1.5-6.0 MeV
from PET only). One LICA channel measured integral fluxes of ions .GT. 0.8 MeV/n
plus electrons .GT. 0.6 MeV). Data available for each polar cap pass are time
tags of the begin and end points of the averaging interval, the fluxes,
statistical uncertainties in the fluxes, instrument-specific flags, and a
flag indicating a north or south polar cap pass. Data are organized in two
different ways. Monthly ~500-KB ASCII files with records organized by instrument
are available from the SAMPEX Data Center at Caltech and from nssdcftp at
GSFC/SPDF, while monthly ~260 KB CDF-formatted files with records organized by
species are available from the ftp area underlying CDAWeb. The parameter level
information given below in this descriptor corresponds to the CDAWeb organization
of data. Format information for the ASCII version is given in the Information
URL of this descriptor.

Contacts
RolePerson
1.PrincipalInvestigatorspase://SMWG/Person/Glenn.M.Mason
2.GeneralContactspase://SMWG/Person/Richard.A.Mewaldt
InformationURL
Name
Data descriptive text at Caltech
URL
Description

Extensive PDF document prepared by M. Lennard, J. Mazur,
and G. Mason originally in 1996 and most recently updated in 2007 to describe the
many NSSDC-resident SAMPEX data sets, including the polar cap averaged fluxes.
This document also identifies a series of mission and instrument papers at
IEEE Transactions on Geoscience and Remote Sensing, Vol. 31, No. 3, May 1993

PriorIDs
spase://VEPO/NumericalData/SAMPEX/PCA/PT48M
spase://VSPO/NumericalData/SAMPEX/PCA/PT48M
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
AccessURL
Name
HTTPS from SPDF
URL
Description

In CDF via HTTP from CDAWeb

Format
CDF
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb
URL
ProductKey
SX_K0_POF
Description

Plots, lists and files from CDAWeb.Name of the data resource:SX_K0_POF

Format
Text
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
Style
HAPI
ProductKey
SX_K0_POF
Description

Web Service to this product using the HAPI interface.

Format
CSV
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
SAMPEX Data Center
URL
Description

In ASCII via ftp from SDC

Format
Text
ProviderProcessingLevel
CALIBRATED
InstrumentIDs
MeasurementType
EnergeticParticles
MeasurementType
IonComposition
TemporalDescription
TimeSpan
StartDate
1992-07-06 00:00:00
StopDate
2004-06-30 23:59:59
Cadence
PT48M
ObservedRegion
Earth.Magnetosphere
Parameter #1
Name
Polar cap entry time
ParameterKey
entry_iso_time
Description

Time of entry into polar cap and of start of averaging
of fluxes, expressed in ISO time format (YYYY_MM_DDTHH:MM:SS.SZ)

Caveats
Not every orbit reached poleward of 70 deg geomagnetic
Cadence
PT48M
Support
SupportQuantity
Temporal
Parameter #2
Name
Polar cap exit time
ParameterKey
exit_iso_time
Description

Time of exit from polar cap and of end of averaging
of fluxes, expressed in ISO time format (YYYY_MM_DDTHH:MM:SS.SZ)

Caveats
Not every orbit reached poleward of 70 deg geomagnetic
Cadence
PT48M
Support
SupportQuantity
Temporal
Parameter #3
Name
Polar cap flag
ParameterKey
Polarcap_ID
Description

Takes value 0 for south pole pass, 1 for north pole pass

Cadence
PT48M
Support
SupportQuantity
Positional
Parameter #4
Name
LICA flags
ParameterKey
lica_flag
Description

Four flags associated with the LICA instrument. See Information URL
given above for meanings of flags and their values.

Cadence
PT48M
Structure
Size
4
Description

The 4 LICA flags

Support
SupportQuantity
Other
Parameter #5
Name
HILT flags
ParameterKey
HILT_flag
Description

Six flags associated with the HILT instrument. See Information URL
given above for meanings of flags and their values.

Cadence
PT48M
Structure
Size
6
Description

The 6 HILT flags

Support
SupportQuantity
Other
Parameter #6
Name
MAST flags
ParameterKey
MAST_flag
Description

Three flags associated with the MAST instrument. See Information URL
given above for meanings of flags and their values.

Cadence
PT48M
Structure
Size
3
Description

The 3 MAST flags

Support
SupportQuantity
Other
Parameter #7
Name
PET flags
ParameterKey
PET_flag
Description

Three flags associated with the PET instrument. See Information URL
given above for meanings of flags and their values.

Cadence
PT48M
Structure
Size
3
Description

The 3 PET flags

Support
SupportQuantity
Other
Parameter #8
Name
Fluxes of Z.GE.6 ions
ParameterKey
zGT2_DID_FLX
Description

Polar-cap-averaged fluxes of Z.GE.6 ions in 9 energy bins
listed above, from LICA, HILT and MAST instruments. We note a discrepancy
between CDAWeb's use of "Z.GT.2" and the Project's use of "Z.GE.6" for these
fluxes. See Appendix 7 of the document at the above referenced Information
URL.

Cadence
PT48M
Units
1/sec-cm**2-ster-MeV/n
Structure
Size
9
Description

The 9 Z.GE.6 fluxes

FillValue
-1.0E+31
Particle
ParticleType
Ion
Qualifier
Average
ParticleQuantity
NumberFlux
Parameter #9
Name
Fluxes of helium ions
ParameterKey
He_dif_flux
Description

Polar-cap-averaged fluxes of helium ions in 4 energy bins
listed above, from LICA, HILT and MAST instruments

Cadence
PT48M
Units
1/sec-cm**2-ster-MeV/n
Structure
Size
4
Description

The 4 Helium ion fluxes

FillValue
-1.0E+31
Particle
ParticleType
AlphaParticle
Qualifier
Average
ParticleQuantity
NumberFlux
Parameter #10
Name
Fluxes of protons
ParameterKey
Prot_Dif_Flux
Description

Polar-cap-averaged fluxes of protons in 2 energy bins
listed above, from MAST and PET instruments. These are actually Z.GE.1
measurements.

Cadence
PT48M
Units
1/sec-cm**2-ster-MeV/n
Structure
Size
2
Description

The 2 proton fluxes

FillValue
-1.0E+31
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
NumberFlux
Parameter #11
Name
Fluxes of electrons
ParameterKey
Elect_Dif_Flux
Description

Polar-cap-averaged fluxes of electrons in 2 energy bins
listed above, from the PET instrument.

Cadence
PT48M
Units
1/sec-cm**2-ster-MeV
Structure
Size
2
Description

The 2 electron fluxes

FillValue
-1.0E+31
Particle
ParticleType
Electron
Qualifier
Average
ParticleQuantity
NumberFlux
Parameter #12
Name
Integral fluxes of ions and electrons
ParameterKey
Int_Flux
Description

Polar-cap-averaged integral fluxes, mainly of protons
above 0.8 MeV and electrons above 0.6 MeV, from LICA

Cadence
PT48M
Units
1/sec-cm**2-ster
FillValue
-1.0E+31
Particle
ParticleType
Proton
ParticleType
Electron
Qualifier
Average
ParticleQuantity
NumberFlux
Parameter #13
Name
Statistical uncertainites in fluxes of Z.GE.6 ions
ParameterKey
zGT2_FLX_SIG
Description

Statistical uncertainites in polar-cap-averaged fluxes of Z.GE.6
ions in 9 energy bins listed above, from LICA, HILT and MAST instruments

Cadence
PT48M
Units
1/sec-cm**2-ster-MeV/n
Structure
Size
9
Description

Uncertainties in the 9 Z.GE.6 fluxes

FillValue
-1.0E+31
Particle
ParticleType
Ion
Qualifier
StandardDeviation
ParticleQuantity
NumberFlux
Parameter #14
Name
Statistical uncertainites in fluxes of helium ions
ParameterKey
He_flx_sigma
Description

Statistical uncertainites in polar-cap-averaged fluxes of helium
ions in 4 energy bins listed above, from LICA, HILT and MAST instruments

Cadence
PT48M
Units
1/sec-cm**2-ster-MeV/n
Structure
Size
4
Description

Uncertainties in the 4 helium fluxes

FillValue
-1.0E+31
Particle
ParticleType
AlphaParticle
Qualifier
StandardDeviation
ParticleQuantity
NumberFlux
Parameter #15
Name
Statistical uncertainites in fluxes of protons
ParameterKey
Prot_Flux_Sigma
Description

Statistical uncertainites in polar-cap-averaged fluxes of protons
in 2 energy bins listed above, from MAST and PET instruments

Cadence
PT48M
Units
1/sec-cm**2-ster-MeV/n
Structure
Size
2
Description

Uncertainties in the 2 proton fluxes

FillValue
-1.0E+31
Particle
ParticleType
Proton
Qualifier
StandardDeviation
ParticleQuantity
NumberFlux
Parameter #16
Name
Statistical uncertainites in fluxes of electrons
ParameterKey
Elect_Flx_Sigma
Description

Statistical uncertainites in polar-cap-averaged fluxes of electrons
in 2 energy bins listed above, from PET instrument

Cadence
PT48M
Units
1/sec-cm**2-ster-MeV
Structure
Size
2
Description

Uncertainties in the 2 electron fluxes

FillValue
-1.0E+31
Particle
ParticleType
Electron
Qualifier
StandardDeviation
ParticleQuantity
NumberFlux
Parameter #17
Name
Statistical uncertainties in ntegral fluxes of ions and electrons
ParameterKey
Int_Flux_sigma
Description

Statistical uncertainties in polar-cap-averaged integral fluxes,
mainly of protons above 0.8 MeV and electrons above 0.6 MeV, from LICA

Cadence
PT48M
Units
1/sec-cm**2-ster
FillValue
-1.0E+31
Particle
ParticleType
Proton
ParticleType
Electron
Qualifier
StandardDeviation
ParticleQuantity
NumberFlux