Data · dataset · 2025
OMNI, Combined Solar Wind Plasma Moments and Interplanetary Magnetic Field (IMF) Time-Shifted to the Nose of the Earth's Bow Shock, plus Geomagnetic Indices, 1 min Data
Listed in NASA Data Portal
Description
Near-Earth Heliospheric Data, OMNI, Definitive Multispacecraft Interplanetary Parameters Data, 1 min averaged Additional information for all parameters are available from OMNI Data Documentation: omniweb..sci.gsfc.nasa.gov/html/HROdocum.html New data may be accesible via the Space Physics Data Facility, SPDF, OMNIWeb Service: omniweb.gsfc.nasa.gov/ow_min.html The Modified (Level-3) High Resolution OMNI data files are made in the same format as the OMNI files based on SWE Key Parameter data.
There are a few differences between old and new high resolution OMNI data sets:
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- 1) In the newly modified Level-3 OMNI data files, we used the Wind SWE plasma definitive data rather than the Wind SWE plasma KP-despiked data. Using the definitive data give us possibility to include the Alpha/Proton Density Ratio and to use more accurate plasma parameters. However, the time coverage in the new OMNI data was decreased by from 2% to 10%. See the data description at spdf.gsfc.nasa.gov/pub/data/omni/high_res_omni/modified/. For detail comparison 1 min SWE definitive and cross-normalized SWE Key Parameter data sets, see omniweb.gsfc.nasa.gov/ftpbrowser/wind_pla_def_kp_norm.html.
- 2) To keep the number of words and the record lengths the same as in the old OMNI high resolution data set, we replaced the PCN Index (word #45) in the ASCII records with the new Alpha/Proton Density Ratio parameter.
- 3) The latest date for these new data is usually behind of the OMNI based on SWE_KP data. Modifications:
- 1) Conversion to ISTP/IACG CDFs via SKTEditor, February 2000
- 2) Time tags in CDAWeb version were modified to use the CDAWeb convention of having mid-average time tags rather than OMNI original convention of start-of-average time tags, March 2005
Links
Get the data
- Resource spdf.gsfc.nasa.gov/pub/data/omni/omni_cdaweb/hro2_1min ↗
download · from data nasa gov
- Resource cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=OMNI_HRO2_1MIN&index=sp_phys ↗
download · from data nasa gov
- Resource cdaweb.gsfc.nasa.gov/hapi ↗
download · from data nasa gov
- Resource omniweb.gsfc.nasa.gov/html/HROdocum.html ↗
download · from data nasa gov
- Resource omniweb.gsfc.nasa.gov/ow_min.html ↗
download · from data nasa gov
- Resource omniweb.gsfc.nasa.gov/html/hro_news.html ↗
download · from data nasa gov
- Resource helio.data.nasa.gov/dataset/OMNI_HighResolutionObservations_Version2_PT1M ↗
download · from data nasa gov
- Resource hpde.io/NASA/NumericalData/OMNI/HighResolutionObservations/Version2/PT… ↗
download · from data nasa gov
- Resource spdf.gsfc.nasa.gov/pub/data/omni/omni_cdaweb/hro2_1min ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/omni-combined-solar-wind-plasma-moments-and-interplane… ↗
landing page · from data nasa gov
- DOI doi.org/10.48322/mj0k-fq60 ↗
DOI / persistent id · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=7cacb6be-9b7b-40df-82f1-ae857654e… ↗
metadata API · from data nasa gov
Provenance · 1 source records, 6 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | 7cacb6be-9b7b-40df-82f1-ae857654e47f | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| created_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| description | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /notes |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| title | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /title |
| updated_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 |