OMNIWeb Plus Browser
to browse data as part of data selection or to create subsetted files

This interface provides access to a field/plasma-merged 4-min ACE data set created at SPDF as part of preparing ACE data for OMNI. Input to the SPDF data set were 4-min MAG magnetic field data (PI: N.F. Ness), 64-s SWEPAM plasma data (P.I. D. McComas), and spacecraft position data, all obtained from the ACE Science Center from which needed documentation may be found. The annual files of this ASCII data set may be accessed at anonymous FTP site.

Time span 1998-01-01 - 2021-03-13

Please enter your selections and then click on the Submit button.

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

*Enter start and stop dates (Use yyyyddd or yyyymmdd)
    Start      Stop

*Select variables
S/C Position
X, GSE (km)
Y, GSE (km)
Z, GSE (km)

SW Mag. Field
Bmag (nT)
Bgse_x (nT)
Bgse_y (nT)
Bgse_z (nT)
No of points
Quality flag

SW Plasma
Density, (N/cm^3)
Temperature, K
He/H ratio
Speed, (km/s)
Vx, GSE (km/s)
Vy, GSE (km/s)
Vz, GSE (km/s)

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

If you have any questions/comments about the OMNWeb Plus, contact Dr. Natalia Papitashvili,Mail Code 672, NASA/Goddard Space Flight Center, Greenbelt, MD 20771

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