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OMNI Hourly Data Set

(2020). OMNI Hourly Data Set. [Data set]. NASA Space Physics Data Facility. https://doi.org/10.48322/1shr-ht18. Accessed on .

Note: Proper references, including or other formats, should include the "Accessed on date" as shown above to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/NumericalData/OMNI/PT1H

Description
Hourly averaged, multi-source, near-Earth solar wind magnetic field, plasma and energetic proton flux data, plus AE, AU, AL, Kp, ap, and Dst geomagnetic indices, Polar Cap (Thule) index, F10.7 index, and Rz (sunspot number). Also available at 1-day and 27-day resolution.

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Details

Version:2.3.2

NumericalData

ResourceID
spase://NASA/NumericalData/OMNI/PT1H
ResourceHeader
ResourceName
OMNI Hourly Data Set
DOI
https://doi.org/10.48322/1shr-ht18
ReleaseDate
2021-05-31 12:34:56.789
RevisionHistory
RevisionEvent
ReleaseDate
2021-05-31 12:34:56.789
Note
Updated to SPASE Version 2.3.2 if needed, Applied quality control for DOI usage, LFB
Description
Hourly averaged, multi-source, near-Earth solar wind magnetic field, plasma and energetic proton flux data, plus AE, AU, AL, Kp, ap, and Dst geomagnetic indices, Polar Cap (Thule) index, F10.7 index, and Rz (sunspot number). Also available at 1-day and 27-day resolution.
Acknowledgement
We acknowledge the experiment teams that acquired, processed and provided the OMNI-included data, and J.H. King and N.E. Papitashvili of NASA/GSFC for creating the OMNI data set.
PublicationInfo
Authors
Papitashvili, Natalia E.; & King, Joseph H.
PublicationDate
2020-01-01 00:00:00
PublishedBy
NASA Space Physics Data Facility
Contacts
Role Person StartDate StopDate Note
1. GeneralContact spase://SMWG/Person/Joseph.H.King
2. TechnicalContact spase://SMWG/Person/Natalia.E.Papitashvili

InformationURL
Name
OMNI documentation at OMNIWeb
URL
https://omniweb.gsfc.nasa.gov/html/ow_data.html
Description
Extensive OMNI documentation pages
Association
AssociationID
spase://SMWG/Instrument/ACE/MAG
AssociationType
DerivedFrom
Association
AssociationID
spase://SMWG/Instrument/ACE/SWEPAM
AssociationType
DerivedFrom
Association
AssociationID
spase://SMWG/Instrument/Wind/MFI
AssociationType
DerivedFrom
Association
AssociationID
spase://SMWG/Instrument/Wind/SWE
AssociationType
DerivedFrom
Association
AssociationID
spase://SMWG/Instrument/IMP8/MAG
AssociationType
DerivedFrom
Association
AssociationID
spase://SMWG/Instrument/IMP8/PLS
AssociationType
DerivedFrom
Association
AssociationID
spase://SMWG/Instrument/IMP8/CPME
AssociationType
DerivedFrom
Association
AssociationID
spase://SMWG/Instrument/Geotail/MGF
AssociationType
DerivedFrom
Association
AssociationID
spase://SMWG/Instrument/Geotail/CPI
AssociationType
DerivedFrom
Association
AssociationID
spase://SMWG/Instrument/GOES/11/SEM
AssociationType
DerivedFrom
PriorIDs
spase://VMO/NumericalData/OMNI/PT1H
spase://VSPO/NumericalData/OMNI/PT1H
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
FTP access to CDFs at SPDF
URL
ftps://spdf.gsfc.nasa.gov/pub/data/omni/omni_cdaweb/hourly/
Description
ftp access to annual ASCII files of 1-hour OMNI data and to one full-time-span file for each 1-day and 27-day averages.
AccessURL
Name
HTTP access to CDFs at SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/omni/omni_cdaweb/hourly/
Description
In CDF via HTTP from SPDF
Format
CDF
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=OMNI2_H0_MRG1HR&index=sp_phys
ProductKey
OMNI2_H0_MRG1HR
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/omni/low_res_omni/
Description
In CDF via HTTP from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/omni/low_res_omni/
Description
In CDF via HTTP from SPDF
AccessURL
Name
OMNIWeb
URL
https://omniweb.gsfc.nasa.gov/ow.html
Description
Pathway to data and to extensive documentation. Plots, listings and user-specified files. Scatter plots and linear regressions. Distributions. Means, medians, standard deviations in distributions. Pathway to 1-min, 5-min, 1-day, 27-day averages.
AccessURL
Name
COHOWeb
URL
https://omniweb.gsfc.nasa.gov/coho/
Format
Text
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/omni/omni_cdaweb/hourly/$Y
AccessFilenameTemplate
omni2_h0_mrg1hr_$Y$m$d_$v.cdf
DataExtent
Quantity
2524
Units
KB
Per
P1Y
Acknowledgement
We acknowledge the experiment teams that acquired, processed and provided the OMNI-included data, and J.H. King and N.E. Papitashvili of NASA/GSFC for creating the OMNI data set.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
URL
https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/OMNI2_H0_MRG1HR/clientLibraryExample/
Style
WebService
ProductKey
OMNI2_H0_MRG1HR
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
We acknowledge the experiment teams that acquired, processed and provided the OMNI-included data, and J.H. King and N.E. Papitashvili of NASA/GSFC for creating the OMNI data set.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
OMNI2_H0_MRG1HR
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
We acknowledge the experiment teams that acquired, processed and provided the OMNI-included data, and J.H. King and N.E. Papitashvili of NASA/GSFC for creating the OMNI data set.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/OMNI
MeasurementType
ThermalPlasma
MeasurementType
MagneticField
MeasurementType
EnergeticParticles
MeasurementType
ActivityIndex
TemporalDescription
TimeSpan
StartDate
1963-01-01 00:00:00
RelativeStopDate
-P1M
Note
Various parameters are held current to differing levels. Typical delay is about 1-2 months.
Cadence
PT1H
ObservedRegion
Heliosphere.NearEarth
Parameter #1
Name
Year
ParameterKey
Column 01
Description
Year.
Support
SupportQuantity
Temporal
Parameter #2
Name
Doy
ParameterKey
Column 02
Description
Decimal day of year (Jan 1 = Day 1).
Support
SupportQuantity
Temporal
Parameter #3
Name
Hour
ParameterKey
Column 03
Description
Decimal hour of day (0, 1, ...23; the average for hour 1 is from 01:00 to 02:00).
Support
SupportQuantity
Temporal
Parameter #4
Name
BRN
ParameterKey
Column 04
Description
Bartel's rotation number
Support
SupportQuantity
Other
Parameter #5
Name
IMF spacecraft ID
ParameterKey
Column 05
Description
ID for magnetic field data source spacecraft for this hour. See documentation cited above. +-------------------------------------------------------------------------+ | Spacecraft/Instrument Name | Spacecraft ID | |-------------------------------------------------------------------------| | IMP 1 (Explorer 18) | 18 | | IMP 3 (Explorer 28) | 28 | | IMP 4 (Explorer 34) | 34 | | IMP 5 (Explorer 41) | 41 | | IMP 6 (Explorer 43) | 43 | | IMP 7 (Explorer 47) MAG and Plasma/MIT | 47 | | IMP 7 (Explorer 47) Plasma/LANL | 44 | | IMP 8 (Explorer 50) MAG and Plasma/MIT | 50 | | IMP 8 (Explorer 50) Plasma/LANL | 45 | | AIMP 1 (Explorer 33) | 33 | | AIMP 2 (Explorer 35) | 35 | | HEOS 1 and HEOS 2 | 1 | | VELA 3 | 3 | | OGO 5 | 5 | | Merged LANL VELA Speed Data (July 1964 - March 1971) | 97 | | Merged LANL IMP T,N,V (Including all IMP 8 LANL Plasma) | 98 | | ISEE 1 | 11 | | ISEE 2 | 12 | | ISEE 3 | 13 | | PROGNOZ 10 | 10 | | WIND | 51 | | ACE | 71 | | Geotail | 60 | | No spacecraft | 99 | +-------------------------------------------------------------------------+
FillValue
99
Support
SupportQuantity
Other
Parameter #6
Name
Plasma spacecraft ID
ParameterKey
Column 06
Description
ID for plasma data source spacecraft for this hour. See documentation cited above. +-------------------------------------------------------------------------+ | Spacecraft/Instrument Name | Spacecraft ID | |-------------------------------------------------------------------------| | IMP 1 (Explorer 18) | 18 | | IMP 3 (Explorer 28) | 28 | | IMP 4 (Explorer 34) | 34 | | IMP 5 (Explorer 41) | 41 | | IMP 6 (Explorer 43) | 43 | | IMP 7 (Explorer 47) MAG and Plasma/MIT | 47 | | IMP 7 (Explorer 47) Plasma/LANL | 44 | | IMP 8 (Explorer 50) MAG and Plasma/MIT | 50 | | IMP 8 (Explorer 50) Plasma/LANL | 45 | | AIMP 1 (Explorer 33) | 33 | | AIMP 2 (Explorer 35) | 35 | | HEOS 1 and HEOS 2 | 1 | | VELA 3 | 3 | | OGO 5 | 5 | | Merged LANL VELA Speed Data (July 1964 - March 1971) | 97 | | Merged LANL IMP T,N,V (Including all IMP 8 LANL Plasma) | 98 | | ISEE 1 | 11 | | ISEE 2 | 12 | | ISEE 3 | 13 | | PROGNOZ 10 | 10 | | WIND | 51 | | ACE | 71 | | Geotail | 60 | | No spacecraft | 99 | +-------------------------------------------------------------------------+
FillValue
99
Support
SupportQuantity
Other
Parameter #7
Name
IMF FTS PTS
ParameterKey
Column 07
Description
Number of fine scale points in magnetic field parameter averages for this hour
FillValue
999
Support
SupportQuantity
Other
Parameter #8
Name
Plasma FTS PTS
ParameterKey
Column 08
Description
Number of fine scale points in plasma parameter averages for this hour
FillValue
999
Support
SupportQuantity
Other
Parameter #9
Name
Average magnetic field magnitude
ParameterKey
Column 09
Description
Average of fine scale field magnitudes
Cadence
PT1H
Units
nT
FillValue
999.9
Field
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #10
Name
Magnitude of average magnetic field vector
ParameterKey
Column 10
Description
Magnitude of vector-averaged magnetic field vector. SQRT(<Bx>**2 + <By>**2 +<Bz>**2)
Cadence
PT1H
Units
nT
FillValue
999.9
Field
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #11
Name
Elevation angle of average magnetic field vector
ParameterKey
Column 11
Description
Elevation angle of vector-averaged magnetic field vector. ARCTAN <Bz>/SQRT(<Bx>**2 + <By>**2)
Cadence
PT1H
Units
Deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GSE
FillValue
999.9
Field
Qualifier
DirectionAngle.ElevationAngle
FieldQuantity
Magnetic
Parameter #12
Name
Azimuthal angle of average magnetic field vector
ParameterKey
Column 12
Description
Azimuthal angle of vector-averaged magnetic field vector. ARCTAN <By>/<Bx>
Cadence
PT1H
Units
Deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GSE
FillValue
999.9
Field
Qualifier
DirectionAngle.AzimuthAngle
FieldQuantity
Magnetic
Parameter #13
Name
Magnetic field vector, GSE
Description
Averaged GSE Cartesian components of magnetic field vector
Cadence
PT1H
Units
nT
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Description
Three hourly averaged magnetic field Cartesian components, in GSE
Element
Name
Bx, GSE
Qualifier
Component.I
Index
1
ParameterKey
Column 13
Element
Name
By, GSE
Qualifier
Component.J
Index
2
ParameterKey
Column 14
Element
Name
Bz, GSE
Qualifier
Component.K
Index
3
ParameterKey
Column 15
FillValue
999.9
Field
Qualifier
Component
FieldQuantity
Magnetic
Parameter #14
Name
Magnetic field vector, GSM
Description
Averaged GSM Cartesian components of magnetic field vector
Caveats
Note that Bx(GSM)=Bx(GSE) is given only once in data record.
Cadence
PT1H
Units
nT
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Description
Three hourly averaged magnetic field Cartesian components, in GSE
Element
Name
Bx, GSM
Qualifier
Component.I
Index
1
ParameterKey
Column 13
Element
Name
By, GSM
Qualifier
Component.J
Index
2
ParameterKey
Column 16
Element
Name
Bz, GSM
Qualifier
Component.K
Index
3
ParameterKey
Column 17
FillValue
999.9
Field
Qualifier
Component
FieldQuantity
Magnetic
Parameter #15
Name
Standard deviation in average magnetic field magnitude
ParameterKey
Column 18
Description
Standard derviation in average of fine scale field magnitudes
Cadence
PT1H
Units
nT
FillValue
999.9
Field
Qualifier
StandardDeviation
FieldQuantity
Magnetic
Parameter #16
Name
Standard deviation of average magnetic field vector
ParameterKey
Column 19
Description
Standard deviation of vector-averaged magnetic field vector. SQRT(sigma<Bx>**2 + sigma<By>**2 + Sigma<Bz>**2)
Cadence
PT1H
Units
nT
FillValue
999.9
Field
Qualifier
StandardDeviation
FieldQuantity
Magnetic
Parameter #17
Name
Standard deviations in GSE component averages
Description
Standard deviations in averaged GSE Cartesian components of magnetic field vector
Cadence
PT1H
Units
nT
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Description
Three standard deviations in hourly averaged GSE magnetic field Cartesian components
Element
Name
sigma Bx, GSE
Qualifier
Component.I
Index
1
ParameterKey
Column 20
Element
Name
sigma By, GSE
Qualifier
Component.J
Index
2
ParameterKey
Column 21
Element
Name
sigma Bz, GSE
Qualifier
Component.K
Index
3
ParameterKey
Column 22
FillValue
999.9
Field
Qualifier
StandardDeviation
FieldQuantity
Magnetic
Parameter #18
Name
Plasma proton temperature
ParameterKey
Column 23
Description
Plasma proton temperature, variously derived for various OMNI-input data sets. Cross normalized
Cadence
PT1H
Units
DegK
FillValue
9999999
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
Temperature
Parameter #19
Name
Plasma proton density
ParameterKey
Column 24
Description
Plasma proton density, variously derived for various OMNI-input data sets. Cross normalized
Cadence
PT1H
Units
number/cc
FillValue
999.9
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
NumberDensity
Parameter #20
Name
Plasma proton flow speed
ParameterKey
Column 25
Description
Plasma proton flow speed, variously derived for various OMNI-input data sets. Cross normalized
Cadence
PT1H
Units
km/s
FillValue
9999
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
FlowSpeed
Parameter #21
Name
Flow azimuth angle
ParameterKey
Column 26
Description
Angle from negative Xgse axis towards positive Ygse axis
Cadence
PT1H
Units
Deg
FillValue
999.9
Particle
ParticleType
Proton
Qualifier
DirectionAngle.AzimuthAngle
ParticleQuantity
FlowVelocity
Parameter #22
Name
Flow elevation angle
ParameterKey
Column 27
Description
Angle (lease angle) from GSE X-Y plane to flow vector
Cadence
PT1H
Units
Deg
FillValue
999.9
Particle
ParticleType
Proton
Qualifier
DirectionAngle.ElevationAngle
ParticleQuantity
FlowVelocity
Parameter #23
Name
Alpha to proton density ratio
ParameterKey
Column 28
Description
Alpha to proton density ratio
Cadence
PT1H
FillValue
9.999
Particle
ParticleType
AlphaParticle
ParticleType
Proton
Qualifier
Ratio
ParticleQuantity
NumberDensity
Parameter #24
Name
Flow pressure
ParameterKey
Column 29
Description
Flow pressure. P (nPa) = (1.67/10**6) * Np*V**2 * (1+ 4*Na/Np) Created from hourly averaged Np, Na, V
Cadence
PT1H
Units
nPa
FillValue
99.99
Particle
ParticleType
Proton
ParticleType
AlphaParticle
Qualifier
Average
ParticleQuantity
Pressure
Parameter #25
Name
Plasma parameter standard deviations
Description
An array of 6 standard deviations in the hourly averages of temperature, density, flow speed, two flow direction angles and the Na/Np ratio
Caveats
The units of the standard deviations match the units of the parent parameters.
Cadence
PT1H
Structure
Size
6
Description
An array of 6 standard deviations in the hourly averages of temperature, density, flow speed, two flow direction angles and the Na/Np ratio
Element
Name
SigmaT
Index
1
ParameterKey
Column 30
FillValue
9999999
Element
Name
SigmaN
Index
2
ParameterKey
Column 31
FillValue
999.9
Element
Name
SigmaV
Index
3
ParameterKey
Column 32
FillValue
9999
Element
Name
sigmaPhiV
Index
4
ParameterKey
Column 33
FillValue
999.9
Element
Name
SigmaThetaV
Index
5
ParameterKey
Column 34
FillValue
999.9
Element
Name
SigmaNa/Np
Index
6
ParameterKey
Column 35
FillValue
9.999
Particle
ParticleType
Proton
Qualifier
StandardDeviation
ParticleQuantity
NumberDensity
Parameter #26
Name
VxB Electric Field
ParameterKey
Column 36
Description
VxB electric field. -V(km/s) * Bz (nT; GSM) * 10**-3 Hourly averaged V and Bz used, the product is nearly the Ey component.
Cadence
PT1H
Units
mV/m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
FillValue
999.99
Field
Qualifier
Average
FieldQuantity
Electric
Parameter #27
Name
Plasma beta
ParameterKey
Column 37
Description
Plasma beta [(T*4.16/10**5) + 5.34] * Np / B**2
Cadence
PT1H
FillValue
999.99
Mixed
MixedQuantity
PlasmaBeta
Parameter #28
Name
Alfven Mach Number
ParameterKey
Column 38
Description
Alfven Mach number (V * Np**0.5) / 20 * B
Cadence
PT1H
FillValue
999.9
Mixed
MixedQuantity
AlfvenMachNumber
Parameter #29
Name
Kp Index
ParameterKey
Column 39
Description
Kp index, but rather than standard 3-,3,3+, we use 27,30,33, etc.
Cadence
PT3H
Support
SupportQuantity
Other
Parameter #30
Name
Sunspot Number
ParameterKey
Column 40
Description
Daily sunspot number
Cadence
P1D
Support
SupportQuantity
Other
Parameter #31
Name
Dst Index
ParameterKey
Column 41
Description
Dst Index
Caveats
Note that quick look values are given for most recent times, to be replaced by preliminary values as they become available, in turn to be replaced by definitive values as they become available
Cadence
PT1H
Units
nT
Support
SupportQuantity
Other
Parameter #32
Name
AE Index
ParameterKey
Column 42
Description
AE Index
Caveats
Note that quick look values are given for most recent times, to be replaced by preliminary values as they become available, in turn to be replaced by definitive values as they become available
Cadence
PT1H
Units
nT
Support
SupportQuantity
Other
Parameter #33
Name
Energetic Proton Fluxes
Description
Hourly fluxes of protons above 1, 2, 4, 10, 30, 60 MeV; 1967-near current; 1973-2005 from IMP 8 CPME; 2006 and later from GOES
Cadence
PT1H
Units
number/cm**2 sec ster
Structure
Size
6
Description
One flux for each of the 6 energy thresholds
Element
Name
Proton flux >1 Mev
Index
1
ParameterKey
Column 43
Element
Name
Proton flux >2 Mev
Index
2
ParameterKey
Column 44
Element
Name
Proton flux >4 Mev
Index
3
ParameterKey
Column 45
Element
Name
Proton flux >10 Mev
Index
4
ParameterKey
Column 46
Element
Name
Proton flux >30 Mev
Index
5
ParameterKey
Column 47
Element
Name
Proton flux >6 Mev
Index
6
ParameterKey
Column 48
FillValue
999999.99
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
NumberFlux
Parameter #34
Name
ap Index
ParameterKey
Column 50
Description
ap index
Cadence
PT3H
Support
SupportQuantity
Other
Parameter #35
Name
F10.7 Index
ParameterKey
Column 51
Description
F10.7 solar index
Cadence
P1D
Support
SupportQuantity
Other
Parameter #36
Name
Polar Cap (N) Index
ParameterKey
Column 52
Description
Polar Cap Index based on Thule
Cadence
PT1H
Support
SupportQuantity
Other
Parameter #37
Name
AL Index
ParameterKey
Column 53
Description
AL Index
Caveats
Note that quick look values are given for most recent times, to be replaced by preliminary values as they become available, in turn to be replaced by definitive values as they become available
Cadence
PT1H
Units
nT
Support
SupportQuantity
Other
Parameter #38
Name
AU Index
ParameterKey
Column 54
Description
AU Index
Caveats
Note that quick look values are given for most recent times, to be replaced by preliminary values as they become available, in turn to be replaced by definitive values as they become available
Cadence
PT1H
Units
nT
Support
SupportQuantity
Other
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Last Updated: 2021-05-31