2.2.2 spase://VMO/NumericalData/Geotail/CPI/SWA_PT48S Geotail CPI Definitive Solar Wind Moments 2010-04-05T22:16:33Z The CPI Solar Wind analyzer definitive plasma moments. The CPI/SW data are good in the solar wind and may be usefull in the magnetosheath. spase://SMWG/Person/Louis.A.Frank PrincipalInvestigator spase://SMWG/Person/Kent.L.Ackerson DataProducer spase://SMWG/Person/Jan.Merka MetadataContact CPI Survey Plots http://www-pi.physics.uiowa.edu/cpi Geotail CPI description and survey plots. spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open FTP access to files at SPDF ftp://spdf.gsfc.nasa.gov/pub/data/geotail/cpi_h0 HTTP access to files at SPDF http://spdf.gsfc.nasa.gov/pub/data/geotail/cpi_h0 In CDF via HTTP from SPDF CDAWeb http://cdaweb.gsfc.nasa.gov/ GE_H0_CPI CDF None spase://SMWG/Repository/UIowa/ParticlesImagingGroup Online Open University of Iowa: Geotail CPI SW data http://erebus.physics.uiowa.edu/cpi-data/sw Text ASCII spase://SMWG/Instrument/Geotail/CPI/SWA ThermalPlasma IonComposition 1992-09-28T00:00:33 -P2M PT48S Heliosphere.NearEarth Earth.Magnetosheath The CPI solar wind ion analyzer is an E/Q analyzer and the initial distribution functions were calculated assuming that the plasma is H+. Care must be taken when multi-component plasmas are present. If He++ is present and is flowing with the same speed as the H+ component, it will contribute to the distribution function at twice the velocity (four times the energy) of the H+. To facilitate the automated processing of the data the integral was evaluated between vmin = 171 km/s and vmax = 1.35 × u . The resulting temperatures produce excellent fits to the observations. When He++ is present the distribution functions are consistent with an He++ temperature, THe++ = 4 × TH+, i.e., the H+ and He++ have similar thermal velocities. Time Epoch Time in milliseconds, centered, since CDF Epoch ms 1e-3>s 08-Sep-1992 00:00:00.000 31-Dec-2020 20:00:00.000 -1.0E31 Temporal Vi GSE (r,theta,phi) SW_V Ion bulk flow velocity vector in spherical GSE coordinates From 5 deg angular bins km/s 1e3>m/s Spherical GSE F9.2 3 Vr Magnitude 1 km/s 0.0 1200.0 -1.0E31 Vtheta DirectionAngle.ElevationAngle 2 deg 0.0 180.0 -1.0E31 Vphi DirectionAngle.AzimuthAngle 3 deg 0.0 360.0 -1.0E31 Proton AlphaParticle Ion Moment Vector FlowVelocity Vi GSE SW_Vc Ion bulk flow velocity vector in GSE cartesian coordinates From 5 deg angular bins km/s 1e3>m/s Cartesian GSE F7.0 3 Vx Component.I 1 -1400.0 1400.0 -1.0E31 Vy Component.J 2 -1400.0 1400.0 -1.0E31 Vz Component.K 3 -1400.0 1400.0 -1.0E31 Proton AlphaParticle Ion Moment Vector FlowVelocity Ti SW_T Kinetic temperature of hydrogen component of solar wind, scalar Calculated by integrating the distribution function Component.K F7.0 10000.0 1.0E7 -1.0E31 Proton Moment Scalar Temperature Np SW_P_Den Ion number density (SWA), scalar Assuming no helium (0.3 - several hundred) if the density is less than 0.3/cc the higher moments (velocity, temperature) shall not be used because of the poor counting statistics. cm^-3 1e6>m^-3 F8.3 0.01 1000.0 -1.0E31 Proton Moment Scalar NumberDensity Psw SW_Pressure Ion pressure (assuming protons measured and adding 5% alphas, from SWA), scalar Assuming Vp = Va, P = C * Np * mp * Vp*Vp * [1 + 4(.05)]. mp = 1.67 * 10^(-27), C = 10^(21), Np in #/cc, Vp in km/s. Pressure not provided for density less than 0.3/cc because of the poor counting statistics. nPa 1e-9>Pa 1.0E-4 100.0 -1.0E31 Proton AlphaParticle Ion Scalar Pressure