OMNIWeb Data Explorer - Near-Earth Heliosphere Data - SPDF - Goddard Space Flight Center

OMNIWeb: New version of High Resolution OMNI Data

The Modified (Level-3) High Resolution OMNI (HRO) data (at 1-min and 5-min resolution) based on the definitive Wind plasma data. The main difference between the new data old data is the following: For creating this OMNI data set we used shifted Wind/SWE plasma definitive data rather than Wind/SWE shifted plasma KP-despiked data. A user can get more accurate plasma parameters and "Alpha/Proton Density Ratio" parameter: (that parameter is not available in the SWE KP data). However, the time coverage in the new OMNI data was decreased by 2-10% (depending on the year) and latest date of these new data sets usually behind of the OMNI based on SWE_KP data.

About using this interface
About the data

* Select activity
    Plot data List data Create file (file?)

* Select resolution

     1-min averaged 5-min averaged

* Enter start and stop times: (use format YYYYMMDDHH or YYYYMMDD)
Start Stop Click HERE to get time spans for individual parameters.

* Select variables
IMF Spacecraft ID
Plasma Spacecraft ID
# Fine Scale Points in IMF Avgs
# Fine Scale Points in Plasma Avgs
Percent interpolated
Timeshift, sec.
Sigma Timeshift
Sigma Min_var_vector
Time btwn observations,sec
Magnetic field
IMF Magnitude Avg, nT
By, GSE, nT
Bz, GSE, nT
By, GSM, nT
Bz, GSM, nT
Sigma in IMF Magnitude Avg.
Sigma in IMF Vector Avg
Flow Speed, km/sec
Vx Velocity, GSE, km/s
Vy Velocity, GSE, km/s
Vz Velocity, GSE, km/s
Proton Density, n/cc
Proton Temperature, K
Na/Np Ratio
Derived Parameters
Flow Pressure, nPa
Ey - Electric Field, mV/m
Plasma Beta

Alfven Mach Number
Magnetosonic Mach Number
Spacecraft and Bow Shock Nose (BSN) Positions
Spacecraft X, GSE, Re
Spacecraft Y, GSE, Re
Spacecraft Z, GSE, Re
BSN location X, GSE, Re
BSN location Y, GSE, Re
BSN location Z, GSE, Re

Provisional activity Indexes
AE Index, nT
AL Index, nT
AU Index, nT


Fluxes from GOES (Available for 5min resolution only))
Proton Flux >10 MeV, 1/(cm**2-sec-ster)
Proton Flux >30 MeV, 1/(cm**2-sec-ster)
Proton Flux >60 MeV, 1/(cm**2-sec-ster)

*Advanced plot selections (optional)
Y-axis Scale:
Character size(0.5-2.0): Symbol Size(0.1-4.0):
Plot Symbol: Image size (pixels) X: Y:


If you have any questions/comments about OMNIWEB system, contact:
Dr. Natalia Papitashvili, Space Physics Data Facility, Mail Code 672, NASA/Goddard Space Flight Center, Greenbelt, MD 20771

NASA Official: Robert Candey (, Head of the Space Physics Data Facility