OMNI/OMNI2

From ViRBO

1. Summary

This data set is described in http://omniweb.gsfc.nasa.gov/

OMNI 2 was created in 2003 as a successor to the "old OMNI" data set first created at the National Space Science Data Center (NSSDC) in the mid-1970's and maintained and extended thereafter by NSSDC. The OMNI data set is an hourly resolution multi-source data set now spanning the period November, 1963 (IMP 1 launch) to May, 2003. The primary data of OMNI are near-Earth solar wind magnetic field and plasma parameters. Also included are 1973-2001 energetic particle data from IMP 8 and sunspot number and geomagnetic (Dst, Kp, C9) activity indices. AE indices have replaced C9 indices in OMNI 2, and 1967-1972 IMP 4 and 5 particle data have been added.

2. SPASE

Numerical Data [1]

3. Notes

On April 29, 2009, new geomagnetic activity index variables were added to the OMNI2 data set. They are included in the most recent version.

The version 1 label indicates that many of the existing parameters have changed since the previous merged files were created for version 0 in 2009.

Kondrashov has developed a reconstruction of solar wind parameters (Bz, By, and dynamic pressure P) in the gaps of missing data in OMNI dataset for 1984-1995 time interval [2].

4. Acknowledgment

Cite: From http://omniweb.gsfc.nasa.gov/html/ow_data.html: Use of these data in publications should be accompanied at minimum by acknowledgements of the National Space Science Data Center.