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 2.2.2

Numerical Data Product: OMNI Hourly Data Set

Resource ID
spase://VMO/NumericalData/OMNI/PT1H Get XML
Name
OMNI Hourly Data Set
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.

Additional information
OMNI documentation at OMNIWeb

Extensive OMNI documentation pages

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.

Contact
Role Person
1. General contact Dr. Joseph H. King Get XML
2. Technical contact Dr. Natalia E. Papitashvili Get XML
Release date
2010-04-30 00:00:00
Association
Derived from spase://SMWG/Instrument/ACE/MAG Get XML
Association
Derived from spase://SMWG/Instrument/ACE/SWEPAM Get XML
Association
Derived from spase://SMWG/Instrument/WIND/MFI Get XML
Association
Derived from spase://SMWG/Instrument/WIND/SWE Get XML
Association
Derived from spase://SMWG/Instrument/IMP8/MAG Get XML
Association
Derived from spase://SMWG/Instrument/IMP8/PLS Get XML
Association
Derived from spase://SMWG/Instrument/IMP8/CPME Get XML
Association
Derived from spase://SMWG/Instrument/Geotail/MGF Get XML
Association
Derived from spase://SMWG/Instrument/Geotail/CPI Get XML
Association
Derived from spase://SMWG/Instrument/GOES11/SEM Get XML
Repository #1
Name
SPDF Get XML
Availability
Online
Access rights
Open
URL
FTP access to CDFs at SPDF

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.

HTTP access to CDFs at SPDF

In CDF via HTTP from SPDF

Format
CDF
Repository #2
Name
SPDF Get XML
Availability
Online
Access rights
Open
URL
CDAWeb
FTP access to ASCII files at SPDF

In CDF via HTTP from SPDF

HTTP access to ASCII files at SPDF

In CDF via HTTP from SPDF

OMNIWeb

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.

COHOWeb
Format
Text
File size
2524 KB per 1 year
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.

Processing level
Calibrated
Instrument
OMNI Instrument Get XML
Measurement type
Activity index
Energetic particles
Magnetic field
Thermal plasma
Temporal description
Start date
1963-01-01 00:00:00
Relative stop date
1 month ago
Note

Various parameters are held current to differing levels. Typical delay is about 1-2 months.

Cadence
1 hour
Observed regions
Heliosphere.NearEarth

Parameters

Parameter #1

Name
Year
Parameter key
Column 01
Description

Year.

Parameter type
Temporal

Parameter #2

Name
Doy
Parameter key
Column 02
Description

Decimal day of year (Jan 1 = Day 1).

Parameter type
Temporal

Parameter #3

Name
Hour
Parameter key
Column 03
Description

Decimal hour of day (0, 1, ...23; average for "1" is from 01:00 to 02:00).

Parameter type
Temporal

Parameter #4

Name
BRN
Parameter key
Column 04
Description

Bartel's rotation number

Parameter type
Other

Parameter #5

Name
IMF spacecraft ID
Parameter key
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
Fill value
99
Parameter type
Other

Parameter #6

Name
Plasma spacecraft ID
Parameter key
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
Fill value
99
Parameter type
Other

Parameter #7

Name
IMF FTS PTS
Parameter key
Column 07
Description

Number of fine scale points in magnetic field parameter averages for this hour

Fill value
999
Parameter type
Other

Parameter #8

Name
Plasma FTS PTS
Parameter key
Column 08
Description

Number of fine scale points in plasma parameter averages for this hour

Fill value
999
Parameter type
Other

Parameter #9

Name
Average magnetic field magnitude
Parameter key
Column 09
Description

Average of fine scale field magnitudes

Cadence
1 hour
Units
nT
Fill value
999.9
Quantity
Magnetic field
Qualifier
Magnitude

Parameter #10

Name
Magnitude of average magnetic field vector
Parameter key
Column 10
Description

Magnitude of vector-averaged magnetic field vector.

SQRT(<Bx>**2 + <By>**2 +<Bz>**2)

Cadence
1 hour
Units
nT
Fill value
999.9
Quantity
Magnetic field
Qualifier
Magnitude

Parameter #11

Name
Elevation angle of average magnetic field vector
Parameter key
Column 11
Description

Elevation angle of vector-averaged magnetic field vector.

ARCTAN <Bz>/SQRT(<Bx>**2 + <By>**2)

Cadence
1 hour
Units
Deg
Coordinate system
Spherical GSE
Fill value
999.9
Quantity
Magnetic field
Qualifier
Elevation angle

Parameter #12

Name
Azimuthal angle of average magnetic field vector
Parameter key
Column 12
Description

Azimuthal angle of vector-averaged magnetic field vector.

ARCTAN <By>/<Bx>

Cadence
1 hour
Units
Deg
Coordinate system
Spherical GSE
Fill value
999.9
Quantity
Magnetic field
Qualifier
Azimuth angle

Parameter #13

Name
Magnetic field vector, GSE
Description

Averaged GSE Cartesian components of magnetic field vector

Cadence
1 hour
Units
nT
Coordinate system
Cartesian GSE
Structure
Size
3
Description

Three hourly averaged magnetic field Cartesian components, in GSE

Elements
Index Name Qualifier Parameter key
1 Bx, GSE Component I Column 13
2 By, GSE Component J Column 14
3 Bz, GSE Component K Column 15
Fill value
999.9
Quantity
Magnetic field
Qualifier
Component

Parameter #14

Name
Magnetic field vector, GSM
Parameter key
Description

Averaged GSM Cartesian components of magnetic field vector

Caveats

Note that Bx(GSM)=Bx(GSE) is given only once in data record.

Cadence
1 hour
Units
nT
Coordinate system
Cartesian GSM
Structure
Size
3
Description

Three hourly averaged magnetic field Cartesian components, in GSE

Elements
Index Name Qualifier Parameter key
1 Bx, GSM Component I Column 13
2 By, GSM Component J Column 16
3 Bz, GSM Component K Column 17
Fill value
999.9
Quantity
Magnetic field
Qualifier
Component

Parameter #15

Name
Standard deviation in average magnetic field magnitude
Parameter key
Column 18
Description

Standard derviation in average of fine scale field magnitudes

Cadence
1 hour
Units
nT
Fill value
999.9
Quantity
Magnetic field
Qualifier
Standard deviation

Parameter #16

Name
Standard deviation of average magnetic field vector
Parameter key
Column 19
Description

Standard deviation of vector-averaged magnetic field vector.

SQRT(sigma<Bx>**2 + sigma<By>**2 + Sigma<Bz>**2)

Cadence
1 hour
Units
nT
Fill value
999.9
Quantity
Magnetic field
Qualifier
Standard deviation

Parameter #17

Name
Standard deviations in GSE component averages
Description

Standard deviations in averaged GSE Cartesian components of magnetic field vector

Cadence
1 hour
Units
nT
Coordinate system
Cartesian GSE
Structure
Size
3
Description

Three standard deviations in hourly averaged GSE magnetic field Cartesian components

Elements
Index Name Qualifier Parameter key
1 sigma Bx, GSE Component I Column 20
2 sigma By, GSE Component J Column 21
3 sigma Bz, GSE Component K Column 22
Fill value
999.9
Quantity
Magnetic field
Qualifier
Standard deviation

Parameter #18

Name
Plasma proton temperature
Parameter key
Column 23
Description

Plasma proton temperature, variously derived for various OMNI-input data sets. Cross normalized

Cadence
1 hour
Units
DegK
Fill value
9999999
Particle type
Proton
Quantity
Temperature
Qualifier
Average

Parameter #19

Name
Plasma proton density
Parameter key
Column 24
Description

Plasma proton density, variously derived for various OMNI-input data sets. Cross normalized

Cadence
1 hour
Units
number/cc
Fill value
999.9
Particle type
Proton
Quantity
Number density
Qualifier
Average

Parameter #20

Name
Plasma proton flow speed
Parameter key
Column 25
Description

Plasma proton flow speed, variously derived for various OMNI-input data sets. Cross normalized

Cadence
1 hour
Units
km/s
Fill value
9999
Particle type
Proton
Quantity
Flow speed
Qualifier
Average

Parameter #21

Name
Flow azimuth angle
Parameter key
Column 26
Description

Angle from negative Xgse axis towards positive Ygse axis

Cadence
1 hour
Units
Deg
Fill value
999.9
Particle type
Proton
Quantity
Flow velocity
Qualifier
Azimuth angle

Parameter #22

Name
Flow elevation angle
Parameter key
Column 27
Description

Angle (lease angle) from GSE X-Y plane to flow vector

Cadence
1 hour
Units
Deg
Fill value
999.9
Particle type
Proton
Quantity
Flow velocity
Qualifier
Elevation angle

Parameter #23

Name
Alpha to proton density ratio
Parameter key
Column 28
Description

Alpha to proton density ratio

Cadence
1 hour
Fill value
9.999
Particle type
AlphaParticle
Proton
Quantity
Number density
Qualifier
Ratio

Parameter #24

Name
Flow pressure
Parameter key
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
1 hour
Units
nPa
Fill value
99.99
Particle type
Proton
AlphaParticle
Quantity
Pressure
Qualifier
Average

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
1 hour
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

Elements
Index Name Parameter key Fill value
1 SigmaT Column 30 9999999
2 SigmaN Column 31 999.9
3 SigmaV Column 32 9999
4 sigmaPhiV Column 33 999.9
5 SigmaThetaV Column 34 999.9
6 SigmaNa/Np Column 35 9.999
Particle type
Proton
Quantity
Number density
Qualifier
Standard deviation

Parameter #26

Name
VxB Electric Field
Parameter key
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
1 hour
Units
mV/m
Coordinate system
Cartesian GSM
Fill value
999.99
Quantity
Electric field
Qualifier
Average

Parameter #27

Name
Plasma beta
Parameter key
Column 37
Description

Plasma beta

[(T*4.16/10**5) + 5.34] * Np / B**2

Cadence
1 hour
Fill value
999.99
Quantity
PlasmaBeta

Parameter #28

Name
Alfven Mach Number
Parameter key
Column 38
Description

Alfven Mach number

(V * Np**0.5) / 20 * B

Cadence
1 hour
Fill value
999.9
Quantity
Alfven Mach number

Parameter #29

Name
Kp Index
Parameter key
Column 39
Description

Kp index, but rather than standard 3-,3,3+, we use 27,30,33, etc.

Cadence
3 hours
Parameter type
Other

Parameter #30

Name
Sunspot Number
Parameter key
Column 40
Description

Daily sunspot number

Cadence
1 day
Parameter type
Other

Parameter #31

Name
Dst Index
Parameter key
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
1 hour
Units
nT
Parameter type
Other

Parameter #32

Name
AE Index
Parameter key
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
1 hour
Units
nT
Parameter type
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
1 hour
Units
number/cm**2 sec ster
Structure
Size
6
Description

One flux for each of the 6 energy thresholds

Elements
Index Name Parameter key
1 Proton flux >1 Mev Column 43
2 Proton flux >2 Mev Column 44
3 Proton flux >4 Mev Column 45
4 Proton flux >10 Mev Column 46
5 Proton flux >30 Mev Column 47
6 Proton flux >6 Mev Column 48
Fill value
999999.99
Particle type
Proton
Quantity
Number flux
Qualifier
Average

Parameter #34

Name
ap Index
Parameter key
Column 50
Description

ap index

Cadence
3 hours
Parameter type
Other

Parameter #35

Name
F10.7 Index
Parameter key
Column 51
Description

F10.7 solar index

Cadence
1 day
Parameter type
Other

Parameter #36

Name
Polar Cap (N) Index
Parameter key
Column 52
Description

Polar Cap Index based on Thule

Cadence
1 hour
Parameter type
Other

Parameter #37

Name
AL Index
Parameter key
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
1 hour
Units
nT
Parameter type
Other

Parameter #38

Name
AU Index
Parameter key
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
1 hour
Units
nT
Parameter type
Other

SPASE version 2.0.1

Instrument: OMNI Instrument

Instrument ID
spase://SMWG/Instrument/OMNI Get XML
Name
OMNI Instrument
Description

The OMNI instrument is a virtual instrument representing the collection of Magnetometers, Electrostatic Analyers, and Energetic Particle instruments used in the creation of the OMNI datasets. The instruments used within the OMNI datasets come from the ACE, Wind, IMP8, Geotail, GOES and various other spacecraft. For any given time period OMNI uses a selection criteria to select the "best" available data to be used. Thus, only one magnetometer, one electrostatic analyser, and one energetic particle instrument are used for each data point within an OMNI dataset. Without looking at each data record it is not possible to tell which instruments contributed. As result, the OMNI instrument is used as a proxy for the set of possible contributing instruments. Complete details on the instruments and the selection criteria are available at the Information URLs listed below.

Additional information
Overview of High Resolution OMNI

Description of the instruments and processing techniques used in the creation of high resolution OMNI

Overview of Low Resolution OMNI

Description of the instruments and processing techniques used in the creation of low resolution OMNI

Contact
Role Person
1. Scientist Dr. Joseph H. King Get XML
Release date
2011-08-18 16:00:05
Association
Part of spase://SMWG/Instrument/ACE/MAG Get XML
Association
Part of spase://SMWG/Instrument/ACE/SWEPAM Get XML
Association
Part of spase://SMWG/Instrument/Wind/MFI Get XML
Association
Part of spase://SMWG/Instrument/Wind/SWE Get XML
Association
Part of spase://SMWG/Instrument/IMP8/MAG Get XML
Association
Part of spase://SMWG/Instrument/IMP8/PLS Get XML
Association
Part of spase://SMWG/Instrument/Geotail/MGF Get XML
Association
Part of spase://SMWG/Instrument/Geotail/CPI Get XML
Instrument type
Electrostatic Analyser
Energetic Particle Instrument
Magnetometer
Investigation name
OMNI Instrument
Observatory
OMNI Get XML

SPASE version 2.2.0

Observatory: OMNI

Observatory ID
spase://SMWG/Observatory/OMNI Get XML
Name
OMNI
Description

The OMNI observatory is a virtual observatory representing the collection of spacecraft used in the creation of the OMNI datasets. The observatories used within the OMNI datasets are ACE, Wind, IMP8, Geotail, GOES and various other spacecraft. For any given time period OMNI uses a selection criteria to select the "best" available data to be used. Thus, a data record may consist of data from multiple observatories. Without looking at each data record it is not possible to tell which observatories contributed. As result, the OMNI observatories is used as a proxy for the set of possible contributing observatories. Complete details on the instruments and the selection criteria are available at the Information URLs listed below.

Additional information
Overview of High Resolution OMNI

Description of the instruments and processing techniques used in the creation of high resolution OMNI

Overview of Low Resolution OMNI

Description of the instruments and processing techniques used in the creation of low resolution OMNI

Contact
Role Person
1. Scientist Dr. Joseph H. King Get XML
Release date
2011-08-18 15:57:51
Association
Part of spase://SMWG/Observatory/ACE Get XML
Association
Part of spase://SMWG/Observatory/Wind Get XML
Association
Part of spase://SMWG/Observatory/IMP8 Get XML
Association
Part of spase://SMWG/Observatory/Geotail Get XML
Location
Region
Heliosphere.NearEarth

SPASE version 2.2.0

Person: Dr. Joseph H. King

Name
Dr. Joseph H. King
Organization
NASA GSFC, Code 672
Email
joseph.h.king@nasa.gov
Phone
+1-301-286-1450
Person ID
spase://SMWG/Person/Joseph.H.King Get XML
Release date
2010-08-18 13:39:07

SPASE version 2.2.0

Person: Dr. Natalia E. Papitashvili

Name
Dr. Natalia E. Papitashvili
Organization
GSFC-Code 612.4
Person ID
spase://SMWG/Person/Natalia.E.Papitashvili Get XML

SPASE version 2.2.0

Person: Ms. Tamara J. Kovalick

Name
Ms. Tamara J. Kovalick
Organization
GSFC-Code 672
Email
Tamara.J.Kovalick@nasa.gov
Phone
+1-301-286-9422
Person ID
spase://SMWG/Person/Tamara.J.Kovalick Get XML
Release date
2010-08-05 17:35:47

SPASE version 2.2.0

Person: Mr. Robert M. Candey

Name
Mr. Robert M. Candey
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
robert.m.candey@nasa.gov
Phone
1-301-286-6707
Person ID
spase://SMWG/Person/Robert.M.Candey Get XML
Release date
2010-08-05 17:35:47

SPASE version 2.2.0

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
2010-08-05 17:35:47

SPASE version 1.3.0

Repository: SPDF

Repository ID
spase://SMWG/Repository/NASA/GSFC/SPDF Get XML
Name
SPDF
Description

Space Physics Data Facility

Additional information
SPDF

Space Physics Data Facility

Contact
Role Person
1. General contact Ms. Tamara J. Kovalick Get XML
2. Technical contact Mr. Robert M. Candey Get XML
3. Project scientist Dr. Robert E. McGuire Get XML
Release date
2008-08-26 21:02:30
Prior IDs
spase://vspo/repository/61
spase://SMWG/Repository/SPDF
Access URL