OMNI Daily Data Set

https://doi.org/10.48322/5fmx-hv56

2021-05-31 12:34:56.789

Daily 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-hour and 27-day resolution.

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.

spase://VMO/NumericalData/OMNI/P1D

spase://VSPO/NumericalData/OMNI/P1D

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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.

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Year

Column 01

Year.

Doy

Column 02

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

Hour

Column 03

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

BRN

Column 04

Bartel's rotation number

Average magnetic field magnitude

Column 09

Average of fine scale field magnitudes

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nT

Magnitude of average magnetic field vector

Column 10

Magnitude of vector-averaged magnetic field vector. SQRT(<Bx>2 + <By>2 +<Bz>**2)

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nT

Azimuthal angle of average magnetic field vector

Column 12

Azimuthal angle of vector-averaged magnetic field vector. ARCTAN <By>/<Bx>

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Deg

Elevation angle of average magnetic field vector

Column 11

Elevation angle of vector-averaged magnetic field vector. ARCTAN <Bz>/SQRT(<Bx>2 + <By>2)

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Deg

Magnetic field vector, GSE

Averaged GSE Cartesian components of magnetic field vector

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nT

Magnetic field vector, GSM

Averaged GSM Cartesian components of magnetic field vector

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

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nT

Standard deviations in GSE component averages

Standard deviations in averaged GSE Cartesian components of magnetic field vector

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nT

Standard deviation in average magnetic field magnitude

Column 18

Standard derviation in average of fine scale field magnitudes

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nT

Standard deviation of average magnetic field vector

Column 19

Standard deviation of vector-averaged magnetic field vector. SQRT(sigma<Bx>2 + sigma<By>2 + Sigma<Bz>**2)

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nT

Plasma proton temperature

Column 23

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

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DegK

Plasma proton density

Column 24

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

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number/cc

Plasma proton flow speed

Column 25

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

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km/s

Flow azimuth angle

Column 26

Angle from negative Xgse axis towards positive Ygse axis

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Deg

Flow elevation angle

Column 27

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

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Deg

Alpha to proton density ratio

Column 28

Alpha to proton density ratio

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Flow pressure

Column 29

Flow pressure. P (nPa) = (1.67/106) * NpV2 * (1+ 4Na/Np) Created from hourly averaged Np, Na, V

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nPa

Plasma parameter standard deviations

An array of 6 standard deviations in the hourly averages of temperature, density, flow speed, two flow direction angles and the Na/Np ratio

The units of the standard deviations match the units of the parent parameters.

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VxB Electric Field

Column 36

VxB electric field. -V(km/s) * Bz (nT; GSM) * 10**-3 Hourly averaged V and Bz used, the product is nearly the Ey component.

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mV/m

Plasma beta

Column 37

Plasma beta [(T4.16/105) + 5.34] * Np / B*2

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Alfven Mach Number

Column 38

Alfven Mach number (V * Np**0.5) / 20 * B

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Kp Index

Column 39

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

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ap Index

Column 50

ap index

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Sunspot Number

Column 40

Daily sunspot number

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F10.7 Index

Column 51

F10.7 solar index

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Dst Index

Column 41

Dst Index

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

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nT

AE Index

Column 42

AE Index

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

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nT

AL Index

Column 53

AL Index

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

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nT

AU Index

Column 54

AU Index

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

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nT

Polar Cap (N) Index

Column 52

Polar Cap Index based on Thule

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Energetic Proton Fluxes

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

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number/cm**2 sec ster

number of points in daily IMF averages

Column 07

Number of hourly averages in daily magnetic field (IMF) parameter averages for this day

number of points in daily plasma averages

Column 08

Number of hourly averages in daily plasma parameter averages for this day