![]() Time tags in CDAWeb version were modified in March 2005 to use theĬDAWeb convention of having mid-average time tags rather than OMNI's Recent OMNI 1-HR Updates News: Modification HistoryĬonversion to ISTP/IACG CDFs via SKTEditor Feb 2000 Hourly averaged definitive multispacecraft interplanetary parameters dataĪdditional data access options available at SPDF's OMNIWeb Service:ĬOHOWeb-formatted OMNI_M merged magnetic field and plasma data OMNI2_H0_MRG1HR ( spase://NASA/NumericalData/OMNI/PT1H) Description Papatashvilli (AdnetSystems, NASA GSFC) OMNI_HRO_5MIN: OMNI Combined, Definitive, 5-minute IMF and Plasma, and Energetic Proton Fluxes, Time-Shifted to the Nose of the Earth's Bow Shock, plus Magnetic Indices - J.H. Papatashvilli (AdnetSystems, NASA GSFC) OMNI_HRO_1MIN: OMNI Combined, Definitive, 1-minute IMF and Plasma Data Time-Shifted to the Nose of the Earth's Bow Shock, plus Magnetic Indices - J.H. Papatashvilli (AdnetSystems, NASA GSFC) OMNI_HRO2_5MIN: OMNI Combined, Definitive 5-minute IMF and Definitive Plasma, and Energetic Proton Fluxes, Time-Shifted to the Nose of the Earth's Bow Shock, plus Magnetic Indices - J.H. Papatashvilli (AdnetSystems, NASA GSFC) OMNI_HRO2_1MIN: OMNI Combined, Definitive 1-minute IMF and Definitive Plasma Data Time-Shifted to the Nose of the Earth's Bow Shock, plus Magnetic Indices - J.H. Papitashvili (ADNET, NASA GSFC) OMNI_COHO1HR_MERGED_MAG_PLASMA: OMNI Combined merged hourly magnetic field, plasma and ephermis data - J.H. OMNIWeb-Plus includes a number of data-comparative interfaces where offsets between like data from different sources can be evaluated statistically thus contributing to improved calibration of data.CDAWeb Served Heliophysics Datasets Beginning with 'O' OMNI2_H0_MRG1HR: OMNI Combined, Definitive, Hourly IMF and Plasma Data, and Energetic Proton Fluxes, Time-Shifted to the Nose of the Earth's Bow Shock, plus Solar and Magnetic Indices - J.H. ![]() We conclude with a discussion of the newly created OMNIWeb-Plus interface that integrates multiple prior interfaces (OMNIWeb, COHOWeb, FTPBrowser, etc.) to all SPDF-resident data relevant to heliospheric research. We trace the growth in functionality of the interface from time-series lists and plots to filtering, two-parameter scatter plots, linear regression fits and parameter distribution functions. We trace the evolution of data dissemination modes from the Interplanetary Medium Data Books and "OMNItape" of the 1970's, through electronic and CD-ROM accessibility, to the OMNIWeb interface provided in 1995. Some parameters have been added since the initial introduction of these data sets. We highlight the mid-1970's creation of the hourly, multi-source OMNI data set holding near-Earth solar wind field and plasma data, energetic particle data and geomagnetic activity indices and the ~2006 creation of High Resolution (1-min, 5-min) OMNI now containing largely the same physical parameters as shifted to the Earth's bow shock nose. This presentation starts with a brief historic overview of the value-added space physics products and interfaces created by NSSDC and, since its 1992 creation, by the Space Physics Data Facility (SPDF). Since its 1966 inception, the National Space Science Data Center has accumulated an archive of over 1100 digital space physics data sets from 682 experiments that have flown on 187 spacecraft.
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