2.3.2 spase://NASA/NumericalData/Wind/SWE/IonMoments/KeyParameter/PT99S Wind Solar Wind Experiment (SWE) Thermal Plamsa Moments, Key Parameter (K0), 99 s Data https://doi.org/10.48322/3zky-gy15 2021-05-31T12:34:56.789 2021-05-31T12:34:56.789 Updated to SPASE Version 2.3.2 if needed, Applied quality control for DOI usage, LFB Wind SWE Key Parameter data: proton density, thermal speed, flow velocity vectors, and spacecraft position vectors. Various versions differ slightly from each other. The version at MIT has flow velocity vectors experessed bby using Geocentric Solar Ecliptic, GSE, Cartesian and spherical representations and GSE Cartesian position vectors. The version available via nssdcftp and FTPBrowser has temperature instead of thermal speed and has no flow direction angles. The CDAWeb version has flow velocity and spacecraft position vectors in both GSE and Geocentric Solar Magnetospheric, GSM, coordinates, flow dynamic pressure, NmV^2, and velocity and density quality flags. The data were progressively despiked in passing from CDAWeb to MIT to nssdcftp/FTPBrowser. Use of the Quality Variables: Quality flags are set in the analysis program that generates the KP data. Previous descriptions of their meaning were out of date. Good data is indicated by a quality flag equal to 0. The quality flags for each parameter are given as integers 4 bytes long, integer*4. The individual bits for each quality value are set or cleared in the analysis code by adding or subtracting a power of 2 as follows. To set the first bit, add 1, the second bit, add 2, the third bit, add 4, the fourth bit, add 8, and so on. See the table below. +------------------------------------------------------------------------------------------------------------------------------+ | Bit | Set Value | MEANING | |------------------------------------------------------------------------------------------------------------------------------| | 1 | 1 | Three point parabolic fits to proton peaks were not attempted. | | 2 | 2 | Non-linear least squares fit was not attempted. | | 3 | 4 | Three point parabolic fits to proton peaks failed. | | 4 | 8 | Non-linear least squares fit failed. | | 5 | 16 | Alpha parameters not valid since the non-linear least squares fit was done for protons only. | | | | Not enough good energy channels to do simultaneous alpha fit. This value applies to iqual_core(5) only. | | 6 | 32 | Analysis code unable to get good value for spin period. | | 7 | 64 | SWE instrument in mode 1, calibration state mode. Key parameters are produced in mode 1, science mode. | | 8 | 128 | Three point fits done for cup 1 only. Split collector ratio of currents used to get the north/south angle. | | | | Either cup 2 turned off, or cup 2 densities were low indicating noise associated with vibration. | | 9 | 256 | Fewer than ten fc_blocks in spectrum. Analysis skipped. | | 10 | 512 | Alpha particle non-linear fit produced values of density and thermal speed that do not seem reasonable. | | 11 | 1024 | Three point parabolic fits to proton peaks done for cup 2 only. Probably Cup 1 is turned off. | | | | The ratio of currents on split collectors used to get north/south angle. | | 12 | 2048 | Single width windows. Delta E over E 6.5% instead of the default 13%. | | 13 | 4096 | Tracking mode operation. | | 14 | 8192 | Limited tracking mode scan, not a full scan. | +------------------------------------------------------------------------------------------------------------------------------+ Particular flag settings: +-------------------------------------------------------------------------------------------+ | Flag Value | Meaning | |-------------------------------------------------------------------------------------------| | 4098 | Tracking mode operation is full scan (4096) and No non-linear fits (2) | | 14338 | Tracking mode operation is full scan (4096) and Limited tracking mode (8192) | +-------------------------------------------------------------------------------------------+ Comments: * Note that in bit 4 of the quality flag the non-linear fit may be reported as good for protons and, at the same time, not good for alphas. * Non-linear fits are not done for Key Parameters, KPs, but those parameter values are excellent and should be used to do science. * Non-linear fits are available are available in this data product, but they have problems which suggests strongly that the KP parameters should be used, see the paper by Kasper et al., Physics-based tests to identify the accuracy of solar wind ion measurements: A case study with the Wind Faraday Cups, J. Geophys. Res., 111, A03105, DOI: 101029/2005JA011442. * Note that all quality flag values that are even numbers are for data values when non-linear fits were not attempted. For the complete guide to the quality flag values see https://cdaweb.gsfc.nasa.gov/wind_swe_quality.html. Note that this SPASE Numerical Description only describes the MESSENGER Magnetometer data stored in Common Data Files. Other links to Wind SWE data in non CDF format are listed in the following table: +--------------------------------------------------------------------------------------------------------------------------------------------+ | SPASE Repository Resource ID | Data Source | Data Access URL | |--------------------------------------------------------------------------------------------------------------------------------------------| | SMWG/Repository/MIT_CSR | ASCII via ftp from MIT | ftp://space.mit.edu/pub/plasma/wind/kp_files/ | | SMWG/Repository/NASA/GSFC/SPDF | ASCII via ftps from SPDF | ftps://spdf.gsfc.nasa.gov/pub/data/wind/swe/ascii/swe_kp_unspike/ | | SMWG/Repository/NASA/GSFC/SPDF | ASCII via https from SPDF | https://spdf.gsfc.nasa.gov/pub/data/wind/swe/ascii/swe_kp_unspike/ | | SMWG/Repository/NASA/GSFC/SPDF | Subset, plot and list via FTPBrowser | https://omniweb.gsfc.nasa.gov/ftpbrowser/wind_swe_kp.html | +--------------------------------------------------------------------------------------------------------------------------------------------+ Please acknowledge the Principal Investigator K.W. Ogilvie for use of the Data Lazarus, Alan J.; Candey, Robert M.; Kasper, Justin C.; Ogilvie, Keith W.; & Fitzenreiter, Richard J. 2021-01-01T00:00:00 NASA Space Physics Data Facility and the Massachusetts Institute of Technology, Center for Space Research spase://SMWG/Person/Keith.W.Ogilvie PrincipalInvestigator spase://SMWG/Person/Alan.J.Lazarus CoInvestigator spase://SMWG/Person/Justin.C.Kasper DataProducer spase://SMWG/Person/Robert.M.Candey MetadataContact spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact Wind Spacecraft Overview and News web page, GSFC https://wind.nasa.gov Wind overview web page with news updates and information about new data product releases, hosted by NASA GSFC en Wind Spacecraft General Instrument web page, GSFC https://wind.nasa.gov/data.php Wind spacecraft general instrument web page with links to data, documentation, and home pages for all instruments, hosted by NASA GSFC en Wind spacecraft General web page for data sources from all instruments, GSFC https://wind.nasa.gov/data_sources.php Wind spacecraft general instrument web page with brief descriptions for data sources from all instruments, hosted by NASA GSFC en Wind SWE Instrument web page, GSFC https://wind.nasa.gov/swe/index.html Wind Solar Wind Experiment, SWE, Instruments, History, and Data Products web page, hosted by NASA GSFC en NSSDC Master Catalog, Wind, SWE instrument https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=1994-071A-06 General information concerning the Wind, Solar Wind Experiment, SWE, instrument en Wind MFI and SWE Key Parameter Data Access and Plotting web page, GSFC https://wind.nasa.gov/mfi_swe_plot.php Wind Magnetic Field Instrument, MFI, and Solar Wind Experiment, SWE, Key Parameter data access and plotting web page with selectable overplotting of DSCOVR data and links to CDF data directories, hosted by NASA GSFC en Original Wind SWE web page, MIT http://web.mit.edu/afs/athena/org/s/space/www/wind.html Wind Solar Wind Experiment, SWE, web page hosted by the Massachusetts Institute of Technology Space Plasma group. Since the Summer of 2015, the responsibility for Wind plasma data has been assumed by the Harvard Smithsonian Astrophysics Lab. en Original Wind SWE Instrument description web page, MIT http://web.mit.edu/space/www/wind/wind_instruments.html Wind Solar Wind Experiment, SWE, Instrument description web page hosted by the Massachusetts Institute of Technology Space Plasma group en Wind Magnetic Field Investigation, MFI, instrument, Space Science Reviews publication https://link.springer.com/article/10.1007/BF00751326 Ogilvie, K.W., D.J. Chornay, R.J. Fritzenreiter, F. Hunsaker, J. Keller, J. Lobell, G. Miller, J.D. Scudder, E.C. Sittler, Jr., R.B. Torbert, D. Bodet, G. Needell, A.J. Lazarus, J.T. Steinberg, J.H. Tappan, A. Mavretic, and E. Gergin, SWE, a comprehensive plasma instrument for the Wind spacecraft, Space Sci. Rev., 71, 55-77, 1995, DOI: 10.1007/BF00751326 en Wind SWE KP Readme file, MIT ftp://space.mit.edu/pub/plasma/wind/kp_files/000_README_WIND_P_FILES.TXT Wind Solar Wind Experiment, SWE, Key Parameter Readme file, hosted by the Massachusetts Institute of Technology, MIT en spase://VSPO/NumericalData/P_Wind_HDR_SWE_KP_92S spase://VSPO/NumericalData/Wind/SWE/KeyParameters/PT92S spase://VSPO/NumericalData/Wind/SWE/IonMoments/KeyParameter/PT99S spase://SMWG/Repository/NASA/GSFC/SPDF Online Open FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/wind/swe/swe_k0/ Access to Data in CDF Format via ftp from SPDF HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/wind/swe/swe_k0/ Access to Data in CDF Format via http from SPDF CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=WI_K0_SWE&index=sp_phys WI_K0_SWE Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb CDF None Please acknowledge the Principal Investigator K.W. Ogilvie. Please acknowledge the Data Providers and CDAWeb when using these Data. spase://SMWG/Repository/NASA/GSFC/SPDF Online Open CDAWeb HAPI Server https://cdaweb.gsfc.nasa.gov/hapi WI_K0_SWE Web Service to this product using the HAPI interface. CSV Please acknowledge the Principal Investigator K.W. Ogilvie. Please acknowledge the Data Providers and CDAWeb when using these Data. Calibrated Calculated spase://SMWG/Instrument/Wind/SWE Ephemeris InstrumentStatus ThermalPlasma 1994-11-01T12:00:00.000 2019-01-18T23:58:49.000 PT99S Heliosphere Heliosphere.Inner Heliosphere.NearEarth Epoch Time Epoch Epoch Time Tags, centered Average Type: standard This Parameter exhibits an increasing Monotonic Progression. PT99S ms 1.0e-3>s Epoch 6.2950845819904e+13 6.3776657018904e+13 01-Nov-1994 00:00:00.000 31-Dec-2020 23:59:59.000 31-Dec-9999 23:59:59.999 Temporal Time Interval, half interval Time series defined by using: EPOCH Delta_time Time Interval, half interval, delta time from center time start/finish to sample data for parameters Average Type: standard PT99S ms 1.0e-3>s Del Time E10.4 2000.0 200000.0 0.0 300000.0 -1.0e+31 Temporal Time, PB5 format Time series defined by using: EPOCH Time_PB5 Time in PB5 format: Year, Day, and Milliseconds of Day PT99S 3 Year 1 a 1994 2020 year 1994 2020 Day of Year (Jan 1 = Day 1) 2 d 305 365 day 305 365 Elapsed millisecond of day 3 ms 0 86399000 msec 0 86399000 -2147483648 Array Temporal Post Gap Flag Time series defined by using: EPOCH GAP_FLAG Post Gap Flag: 0=No gap immediately prior to this record, for other values: see guidelines PT99S TimeSeries Data Gap I2 0 3 0 15 -2147483648 Scalar Velocity SWE Instrument Mode Time series defined by using: EPOCH MODE Solar Wind Experiment, SWE, Instrument Mode PT99S Mode I2 0 5 0 15 -2147483648 Scalar InstrumentMode Spacecraft Position, GSE Cartesian coordinates Time series defined by using: EPOCH SC_pos_gse Spacecraft Position, Geocentric Solar Ecliptic, GSE, Cartesian coordinates Average Type: standard PT99S km 1.0e3>m Cartesian GSE TimeSeries F9.1 -2.0e+06 2.0e+06 3 WI X (GSE) 1 x WI Y (GSE) 2 y WI Z (GSE) 3 z -2.0e+06 2.0e+06 -1.0e+31 Vector Velocity Spacecraft Position, GSM Cartesian coordinates Time series defined by using: EPOCH SC_pos_GSM Spacecraft Position, Geocentric Solar Magnetospheric, GSM, Cartesian coordinates Average Type: standard PT99S km 1.0e3>m Cartesian GSM TimeSeries F9.1 -2.0e+06 2.0e+06 3 WI X (GSM) 1 x WI Y (GSM) 2 y WI Z (GSM) 3 z -2.0e+06 2.0e+06 -1.0e+31 Vector Velocity Spacecraft Position, Geocentric Radial Distance Time series defined by using: EPOCH SC_pos_R Spacecraft Position, Geocentric Radial Distance, R Average Type: standard PT99S km 1.0e3>m TimeSeries WI Rad Dist F9.1 6400.0 4.0e+06 6400.0 4.0e+06 -1.0e+31 Magnitude Scalar Velocity Data Quality Flag, overall Time series defined by using: EPOCH DQF Data Quality Flag, overall: 0=Good, 1=Bad PT99S DQ FLAG I1 0 1 0 1 -2147483648 Scalar Velocity Data Quality Flag, Velocity Time series defined by using: EPOCH QF_V Data Quality Flag, Velocity, V: 0=OK, 2=Caution, 130=Caution, all other values=Not valid Velocity Quality Flag: 0=OK; 2=parabolic 3-point fit only; 130=parabolic 3-point fit only, senso only, N/S angle zero degrees assumed; Other values NOT VALID PT99S QF_V I11 0 256 0 2147483647 -2147483648 Scalar Velocity Data Quality Flag, Proton Thermal Speed Time series defined by using: EPOCH QF_Vth Data Quality Flag, Proton Thermal Speed, Vth: 0=OK, 2=Caution, 130=Caution, all other values=Not valid Proton thermal speed Quality Flag: 0=OK; 2=parabolic 3-point fit only; 130=parabolic 3-point fit only, senso only, N/S angle zero degrees assumed; Other values NOT VALID PT99S QF_Vth I11 0 255 0 2147483647 -2147483648 Scalar Velocity Data Quality Flag, Proton Number Density Time series defined by using: EPOCH QF_Np Data Quality Flag, Proton Density, Np: 0=OK, 2=Caution, 130=Caution, all other values=Not valid Proton Density Quality Flag: 0=OK; 2=parabolic 3-point fit only; 130=parabolic 3-point fit only, senso only, N/S angle zero degrees assumed; Other values NOT VALID PT99S QF_Np I11 0 255 0 2147483647 -2147483648 Scalar Velocity Data Quality Flag, Alpha/Proton Number Density Ratio Time series defined by using: EPOCH QF_a/p Data Quality Flag, Alpha Particle to Proton Number Density Ratio, Na/Np: 0=OK, All values greater than zero=Not valid PT99S QF_a/p I11 0 256 0 2147483647 -2147483648 Scalar Velocity Solar Wind Velocity Vector, GSE Cartesian coordinates Time series defined by using: EPOCH V_GSE Solar Wind Velocity Vector, Geocentric Solar Ecliptic, GSE, Cartesian coordinates PT99S km/s 1.0e3>m/s Cartesian GSE TimeSeries F8.1 3 VX (GSE) 1 -1800.0 0.0 x -1200.0 0.0 VY (GSE) 2 -900.0 900.0 y -500.0 500.0 VZ (GSE) 3 -900.0 900.0 z -500.0 500.0 -1.0e+31 Ion Vector Velocity Solar Wind Velocity Vector, GSM Cartesian coordinates Time series defined by using: EPOCH V_GSM Solar Wind Velocity Vector, Geocentric Solar Magnetospheric, GSM, Cartesian coordinates PT99S km/s 1.0e3>m/s Cartesian GSM TimeSeries F8.1 3 VX (GSM) 1 -1800.0 0.0 x -1200.0 0.0 VY (GSM) 2 -900.0 900.0 y -500.0 500.0 VZ (GSM) 3 -900.0 900.0 z -500.0 500.0 -1.0e+31 Ion Array Velocity Solar Wind Ion Bulk Flow Vector, GSE spherical coordinates Time series defined by using: EPOCH V_GSE_p Solar Wind Ion Bulk Flow Vector, Geocentric Solar Ecliptic, GSE, spherical coordinates, speed magnitude, E/W flow positive from the west of the Sun, N/S flow positive from the south of the Sun PT99S Cartesian GSE TimeSeries F6.1 3 Flow Speed 1 km/s 0.0 2000.0 mag 200.0 1000.0 E/W Flow(GSE) 2 ° -50.0 50.0 lon -20.0 20.0 N/S Flow(GSE) 3 ° -50.0 50.0 lat -20.0 20.0 -1.0e+31 Ion Vector Velocity Solar Wind Thermal Speed Time series defined by using: EPOCH THERMAL_SPD Solar Wind Thermal Speed, Vth, sqrt(2kT/M), most probable PT99S km/s 1.0e3>m/s TimeSeries SW Vth F6.1 0.0 200.0 0.0 500.0 -1.0e+31 Ion Scalar ThermalSpeed Solar Wind Proton Number Density Time series defined by using: EPOCH Np Solar Wind Proton Number Density, scalar PT99S cm^-3 1.0e6>m^-3 TimeSeries Ion N F7.1 0.0 200.0 0.0 1000.0 -1.0e+31 Ion Scalar NumberDensity Alpha Particle Density Percentage Time series defined by using: EPOCH Alpha_Percent Alpha Particle Density Percentage PT99S TimeSeries Na/Np F7.3 0.0 100.0 0.0 100.0 -1.0e+31 AlphaParticle Ratio Scalar NumberDensity 2