Data Access
High resolution (1-min), multi-source, near-Earth solar wind magnetic field and plasma data as shifted to Earth's bow shock nose, plus several 1-min geomagnetic activity indices.
Version:2.3.1
High resolution (1-min), multi-source, near-Earth solar wind magnetic field and plasma data as shifted to Earth's bow shock nose, plus several 1-min geomagnetic activity indices.
| Role | Person | |
|---|---|---|
| 1. | GeneralContact | spase://SMWG/Person/Joseph.H.King |
| 2. | TechnicalContact | spase://SMWG/Person/Natalia.E.Papitashvili |
Extensive OMNI documentation pages
ftp access to monthly ASCII files of 1-min (10 MB/file) data and to annual ASCII files of 1-min (126 MB/file) and 5-min (25 MB/file) data.
In CDF via HTTP from SPDF
In CDF via HTTP from SPDF
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.
Year.
Decimal day of year (Jan 1 = Day 1).
Decimal hour of day
Minute, start of the averaged interval
ID for magnetic field data source spacecraft for this 3-hour interval. See documentation cited above.
The following spacecraft IDs are used:
+--------------+
| ACE | 71 |
| Geotail | 60 |
| IMP 8 | 50 |
| Wind | 51 |
+--------------+ID for plasma data source spacecraft for this 3-hour interval. See documentation cited above.
The following spacecraft IDs are used:
+--------------+
| ACE | 71 |
| Geotail | 60 |
| IMP 8 | 50 |
| Wind | 51 |
+--------------+Number of fine scale points in magnetic field parameter averages for this minute
Number of fine scale points in plasma parameter averages for this minute
The percentage (0-100) of the points contributing to
the 1-min magnetic field averages whose phase front normal (PFN)
was interpolated because neither the MVAB-0 nor Cross Product
shift techniques yielded a PFN that satisfied its respective tests
(see detailed documentation for these).
Average time shift for all 15-s IMF values shifting into this minute.
Standard deviation in time shift average of previous word.
Standard deviation in phase front normal as averaged component-wise over the phase front normals determined for each 15-s IMF vector shifting into this minute.
Difference between mean observation time of IMF data shifting into this minute and into preceding minute. Negative values suggest "out of sequence" BSN arrivals.
Average of fine scale field magnitudes
Averaged GSE Cartesian components of magnetic field vector
Three 1-minute averaged magnetic field Cartesian components, in GSE
Averaged GSM Cartesian components of magnetic field vector
Three 1-minute averaged magnetic field Cartesian components, in GSM
Standard derviation in average of fine scale field magnitudes
Standard deviation of vector-averaged magnetic field vector. SQRT(sigma<Bx>2 + sigma<By>2 + Sigma<Bz>**2)
Plasma proton flow speed, variously derived for various OMNI-input data sets.
Averaged GSE Cartesian components of plasma velocity vector
Three 1-minute averaged plasma flow velocity Cartesian components, in GSE
Plasma proton density, variously derived for various OMNI-input data sets. Cross normalized
Plasma proton temperature, variously derived for various OMNI-input data sets. Cross normalized
P (nPa) = (1.67/106) * NpV2 * (1+ 4Na/Np), created from 1-min averaged Np, Na, V
-V(km/s) * Bz (nT; GSM) * 10**-3; Minute-averaged V and Bz used; nearly Ey component
[(T4.16/105) + 5.34] * Np / B*2
(V * Np**0.5) / 20 * B
GSE Cartesian components of location of spacecraft providing IMF data
Three spacecraft location Cartesian components, in GSE
GSE Cartesian components of location of Earth's bow shock nose (BSN), to which data have been shifted. Dynamically computed from solar wind parameters.
Three bow shock nose location Cartesian components, in GSE