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ACE SWICS 2.0 Solar Wind 2-Hour Data

ResourceID
spase://NASA/NumericalData/ACE/SWICS/L2/PT2H

Description

The SWICS 2.0 dataset consists of time series measurements by ACE/SWICS of the elemental abundance, charge state composition, and kinetic distribution of heavy ions in the solar wind. This data set begins after August 23, 2011, when a radiation and age-induced hardware anomaly altered the instrument's operational state. It should not be confused with SWICS 1.1, the recalibrated data set extending from launch up to the anomaly.
SWICS 2.0 continues to make heavy ion measurements which are not available from any other instrument, and new data analysis methods have been developed to address the statistical and calibration issues of the current instrument state.

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Details

Version:2.2.3

NumericalData

ResourceID
spase://NASA/NumericalData/ACE/SWICS/L2/PT2H
ResourceHeader
ResourceName
ACE SWICS 2.0 Solar Wind 2-Hour Data
ReleaseDate
2020-07-07 21:14:16Z
Description

The SWICS 2.0 dataset consists of time series measurements by ACE/SWICS of the elemental abundance, charge state composition, and kinetic distribution of heavy ions in the solar wind. This data set begins after August 23, 2011, when a radiation and age-induced hardware anomaly altered the instrument's operational state. It should not be confused with SWICS 1.1, the recalibrated data set extending from launch up to the anomaly.
SWICS 2.0 continues to make heavy ion measurements which are not available from any other instrument, and new data analysis methods have been developed to address the statistical and calibration issues of the current instrument state.

Contacts
RolePerson
1.PrincipalInvestigatorspase://SMWG/Person/George.Gloeckler
2.GeneralContactspase://SMWG/Person/Robert.E.McGuire
InformationURL
Name
Release notes for SWICS 2.0 level 2 data
URL
http://www.srl.caltech.edu/ACE/ASC/DATA/level2/ss2/swics_lv2_V2_release_notes.txt
Description

Additional details provided by the instrument team. All users of SWICS data should read these notes.

PriorIDs
spase://VSPO/NumericalData/ACE/SWICS/L2/PT2H
AccessInformation
RepositoryID
spase://SMWG/Repository/ACE_SC
Availability
Online
AccessRights
Open
AccessURL
Name
ACE Science Center (ASC)
URL
http://www.srl.caltech.edu/ACE/ASC/level2/lvl2DATA_SWICS_2.0.html
AccessURL
Name
CDAWeb
URL
https://cdaweb.sci.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=AC_H3_SW2&index=sp_phys
ProductKey
AC_H3_SW2
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/ace/swics/level_2_cdaweb/sw2_h3/
Description

In CDF via ftp from CDAWeb

AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/ace/swics/level_2_cdaweb/sw2_h3/
Description

In CDF via HTTP from CDAWeb

Format
Text
ProviderProcessingLevel
CALIBRATED
InstrumentIDs
spase://SMWG/Instrument/ACE/SWICS
MeasurementType
ThermalPlasma
MeasurementType
IonComposition
TemporalDescription
TimeSpan
StartDate
2012-06-01 00:00:00
RelativeStopDate
-P8M
Cadence
PT2H
ObservedRegion
Heliosphere.NearEarth
Parameter #1
Name
Epoch Time
ParameterKey
Epoch
Description

Number of milliseconds since the CDF epoch.

Cadence
PT2H
Units
ms
UnitsConversion
1e-3>s
ValidMin
01-Jan-1956 00:00:00.000
ValidMax
01-Jan-2083 00:00:00.000
FillValue
-1.0E31
Support
SupportQuantity
Temporal
Parameter #2
Name
Solar Wind He++ Speed
ParameterKey
vHe2
Description

Solar Wind He++ speed, scalar

Cadence
PT2H
Units
km/s
ValidMin
0.0
ValidMax
2000.0
FillValue
-1.0E31
Particle
ParticleType
Ion
Qualifier
Scalar
Qualifier
Magnitude
ParticleQuantity
Velocity
Parameter #3
Name
Solar Wind He++ Thermal speed
ParameterKey
vthHe2
Description

Solar Wind He++ Thermal speed, scalar

Cadence
PT2H
Units
km/s
ValidMin
0.0
ValidMax
2000.0
FillValue
-1.0E31
Particle
ParticleType
Ion
Qualifier
Scalar
ParticleQuantity
ThermalSpeed
Parameter #4
Name
He quality flag
ParameterKey
He_qual
Description

Quality flag for the helium speed and density data.
0: value within sensitive range of SWICS 2.0
1: value saturated at lower limit
2: value saturated at upper limit

ValidMin
0.0
ValidMax
16
FillValue
-1
Support
SupportQuantity
Other
Parameter #5
Name
C+6/C+5 Ratio
ParameterKey
C6to5
Description

C+6/C+5 Solar Wind charge_state Ratio

Cadence
PT2H
ValidMin
0.0
ValidMax
100.0
FillValue
-1.0E31
Particle
ParticleType
Ion
Qualifier
Ratio
ParticleQuantity
ChargeState
Parameter #6
Name
C+6/C+5 Ratio Err
ParameterKey
C6to5_err
Description

C+6/C+5 Statistical Uncertainty

ValidMin
0.0
ValidMax
100.0
FillValue
-1e31
Particle
ParticleType
Ion
Qualifier
Uncertainty
Qualifier
Ratio
ParticleQuantity
ChargeState
Parameter #7
Name
C+6/C+5 Quality Flag
ParameterKey
C6to5_qual
Description

Quality flag for C+6/C+5 Solar Wind charge_state Ratio.
0: value within sensitive range of SWICS 2.0
1: value saturated at lower limit
2: value saturated at upper limit

ValidMin
0
ValidMax
16
FillValue
-1
Support
SupportQuantity
Other
Parameter #8
Name
O+7/O+6 Ratio
ParameterKey
O7to6
Description

O+7/O+6 Solar Wind charge_state Ratio

Cadence
PT2H
ValidMin
0.0
ValidMax
100.0
FillValue
-1.0E31
Particle
ParticleType
Ion
Qualifier
Ratio
ParticleQuantity
ChargeState
Parameter #9
Name
O+7/O+6 Ratio Err
ParameterKey
O7to6_err
Description

O+7/O+6 Statistical Uncertainty

ValidMin
0.0
ValidMax
100.0
FillValue
-1.0E31
Particle
ParticleType
Ion
Qualifier
Uncertainty
Qualifier
Ratio
ParticleQuantity
ChargeState
Parameter #10
Name
O+7/O+6 Quality Flag
ParameterKey
O7to6_qual
Description

Quality flag for O+7/O+6 Solar Wind charge_state Ratio
0: value within sensitive range of SWICS 2.0
1: value saturated at lower limit
2: value saturated at upper limit

ValidMin
0
ValidMax
16
FillValue
-1
Support
SupportQuantity
Other
Parameter #11
Name
O+8/O+6 Ratio
ParameterKey
O8to6
Description

O+8/O+6 Solar Wind charge_state Ratio

Cadence
PT2H
ValidMin
0.0
ValidMax
100.0
FillValue
-1.0E31
Particle
ParticleType
Ion
Qualifier
Ratio
ParticleQuantity
ChargeState
Parameter #12
Name
O+8/O+6 Ratio Err
ParameterKey
O8to6_err
Description

O+8/O+6 Statistical Uncertainty

ValidMin
0.0
ValidMax
100.0
FillValue
-1.0E31
Particle
ParticleType
Ion
Qualifier
Uncertainty
Qualifier
Ratio
ParticleQuantity
ChargeState
Parameter #13
Name
O+8/O+6 Quality Flag
ParameterKey
O8to6_qual
Description

Quality flag for O+8/O+6 Solar Wind charge_state Ratio
0: value within sensitive range of SWICS 2.0
1: value saturated at lower limit
2: value saturated at upper limit

ValidMin
0
ValidMax
16
FillValue
-1
Support
SupportQuantity
Other
Parameter #14
Name
Average Iron charge state
ParameterKey
avqFe
Description

Iron Solar Wind average charge state

Units
ionic charge
ValidMin
0.0
ValidMax
26.0
FillValue
-1e31
Particle
ParticleType
Ion
Qualifier
Average
ParticleQuantity
ChargeState
Parameter #15
Name
Average Iron charge state err
ParameterKey
avqFe_err
Description

Iron average charge state Statistical Uncertainty

Units
ionic charge
ValidMin
0.0
ValidMax
26.0
FillValue
-1e31
Particle
ParticleType
Ion
Qualifier
Uncertainty
Qualifier
Average
ParticleQuantity
ChargeState
Parameter #16
Name
Average Iron charge state quality flag
ParameterKey
avqFe_qual
Description

Quality flag for Iron Solar Wind average charge state
0: value within sensitive range of SWICS 2.0
1: value saturated at lower limit
2: value saturated at upper limit

ValidMin
0
ValidMax
16
FillValue
-1
Support
SupportQuantity
Other
Parameter #17
Name
Fe/O elemental abundance ratio
ParameterKey
FetoO
Description

Fe/O Solar Wind elemental abundance ratio

Units
ionic charge
ValidMin
0.0
ValidMax
10.0
FillValue
-1e31
Particle
ParticleType
Ion
Qualifier
Ratio
ParticleQuantity
NumberDensity
Parameter #18
Name
Fe/O statistical uncertainty
ParameterKey
FetoO_err
Description

Fe/O statistical uncertainty

ValidMin
0.0
ValidMax
10.0
FillValue
-1e31
Particle
ParticleType
Ion
Qualifier
Uncertainty
Qualifier
Ratio
ParticleQuantity
NumberDensity
Parameter #19
Name
Fe/O quality flag
ParameterKey
FetoO_qual
Description

Quality Flag for Fe/O Solar Wind elemental abundance ratio.
0: value within sensitive range of SWICS 2.0
1: value saturated at lower limit
2: value saturated at upper limit

ValidMin
0
ValidMax
16
FillValue
-1
Support
SupportQuantity
Other