<_Note>Nodes prefixed with a _ are not valid SPASE, but are included for debugging. Values prefixed with a x_ are not valid SPASE but may considered for addition for completeness. 2.6.1 <_MasterURL>https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/wi_h0_swe_00000000_v01.json (from all.xml) spase://NASA/NumericalData/Wind/SWE/H0/PT06S <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json Wind SWE (Solar Wind Experiment), 6 - 12 sec Solar Wind Electron Moments <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description wi_h0_swe <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source Explanatory notes:The electron moments included in this data set are derived from the velocity moments integration of solar wind electron distributions measured by the WIND/SWE VEIS instrument (see Ogilvie et al., "SWE, a comprehensive plasma instrument for the WIND spacecraft", Space Sci. Rev., 71, 55, 1955). Moments parameters are computed from 3s measurements which are spaced either 6s or 12s in time. Plots should therefore not exceed a time range of 2 or 3 hours in order to display the details of this high resolution data. The moments parameters which will be of value to most users of this data set are the electron temperature, the electron temperature anisotropy, and the electron heat flux vector. These quantities are reliable and citable with caution, meaning that the PI advises that the user should discuss their interpretation with a member of the SWE science team before publishing. The following comments are intended to aid in the use and interpretation of the prime quantities of this data set, the electron temperature, the electron temperature anisotropy, and the electron heat flux. (All vector quantities are in GSE coordinates.) The temperature and temperature anisotropy are normalized to the derived electron density and, therefore, are not sensitive to the uncertainty in the density determination as discussed below. The electron temperature is derived from the pressure tensor divided by the electron density and the Boltzmann constant. The three eigenvalues of the diagonalized temperature tensor are the temperature parallel to the tensor principal axis and the two perpendicular components of the temperature. The temperature anisotropy is defined here as the ratio of the parallel temperature to the average of the two perpendicular temperature components. The electron temperature is one-third of the trace of the diagonalized temperaturetensor. Also included is the unit vector along the principal axis of the pressure tensor as well as the cosine of the angle between the principal axis and the magnetic field vector. An indication that the principal axis has been uniquely defined is that the temperature anisotropy is significantly different from unity and that the principal axis and the magnetic field are nearly parallel or anti-parallel.The heat flux vector included here is significant only when the magnitude rises above the noise level, i.e., above the level 0.002 to 0.005 ergs/cm/cm/s. The heat flux may be low in magnitude either due to a nearly isotropic distribution, due to electron counter-streaming, or due to a low counting rate of the instrument. An indicator of a significant net heat flux is that the heat flux direction should track with the magnetic field direction. For this purpose, the cosine of the angle between the heat flux vector and the magnetic field is included, and should be close to -1 or +1 in order for the heat flux to be significant. In some cases it will be necessary to use electron pitch angle distributions (available on request from the SWE team) to decide whether low electron flux or counterstreaming account for a low net heat flux. It is also strongly recommended that 3s magnetic field data from the WIND/MFI experiment (not included in this data set) be used inconjunction with the SWE electron heat flux data to ensure a correct interpretation of the heat flux.The electron density and electron bulk flow velocity are also included in this data set but no claim is made for their accuracy. The electron flow velocity is usually within 10% to 20% of the solar wind flow velocity derived from the SWE Faraday cup experiment and which are found in the SWE key parameter data set. The electron density, however, cannot be absolutely determined due to the spacecraft potential and the fact that the electron instrument response has varied over time. The electron density determination includes a first order attempt to determine the spacecraft potential by imposing the charge neutrality condition on the derived electron density and Faraday cup ion density. The electron density will be within a few percent of the solar wind density derived from the Faraday cup early in the mission (1994-1997), while later in the mission (1998 and onward), depending on the state of the instrument, there will be times when the derived electron densitymay be as much as a factor 2 too low. Although the electron density is not derived absolutely, relative changes in electron density can usually be relied on. Both the electron density and electron flow speed track with variations in the ion density and ion flow speed, respectively. However, the user is strongly advised to use the SWE ion key parameters for the bulk plasma density and flow speed. <_Description>Source: Master/CDFglobalAttributes/TEXT <_Rights> SPDX Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html https://spdx.org/licenses/ Wind/SWE Description https://wind.nasa.gov/swe/index.html Wind/SWE (Solar Wind Experiment) electron instruments, history and data products <_Note>Source: InformationURL.json https://doi.org/10.48322/2jxp-7x36 <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json 1994-12-29T00:00:02Z 2001-05-31T23:59:57Z <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop PT6.397S <_Cadence>Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/wind/swe/swe_h0/1994/wi_h0_swe_19941229_v01.cdf. The most common cadence, 6397 [ms] = PT6.397S, occurred for 58.0556% of the 7578 timesteps. <_ObservedRegion>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json <_ProcessingLevel>Processing level is not available in the master file; it should be there instead of, say, https://github.com/rweigel/cdawmeta-spase/blob/main/ProcessingLevel.json spase://SMWG/Instrument/Wind/SWE ThermalPlasma spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: K. Ogilvie at GSFC Code 692 HTTPS from SPDF https://cdaweb.gsfc.nasa.gov/pub/data/wind/swe/swe_h0 In CDF via HTTP from CDAWeb wi_h0_swe_%Y%m%d_%Q.cdf %Y WI_H0_SWE CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: K. Ogilvie at GSFC Code 692 FTPS from SPDF ftps://cdaweb.gsfc.nasa.gov/pub/data/wind/swe/swe_h0 In CDF via HTTP from CDAWeb wi_h0_swe_%Y%m%d_%Q.cdf %Y WI_H0_SWE CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: K. Ogilvie at GSFC Code 692 CDAWeb Web Service https://cdaweb.gsfc.nasa.gov/WebServices/ Instructions for using web services to access this dataset an other other metadata and options for CDAWeb datasets. The ProductKey here corresponds to the query parameter 'dataset' in the tables at the AccessURL in a dataset-related request can be made. WI_H0_SWE CDF CSV GIF NetCDF PNG PS PDF XML x_Script.IDL x_Script.Python Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: K. Ogilvie at GSFC Code 692 CDAWeb Web Service user interface https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=WI_H0_SWE WI_H0_SWE Web service user interface for this product. CDF GIF PDF Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: K. Ogilvie at GSFC Code 692 CDAWeb Python Script https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/WI_H0_SWE/clientLibraryExample/ WI_H0_SWE Web service that generates a Python script to access this product. x_Script.IDL x_Script.Python spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/SSCWeb. Please also acknowledge the data producer: K. Ogilvie at GSFC Code 692 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=WI_H0_SWE WI_H0_SWE Web Service to this product. HTML spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: K. Ogilvie at GSFC Code 692 CDAWeb HAPI Server https://hapi-server.org/servers/#server=CDAWeb&dataset=WI_H0_SWE WI_H0_SWE Web Service to this product using the HAPI interface. CSV JSON Binary spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: K. Ogilvie at GSFC Code 692 CDAWeb HAPI Script in Multiple Languages https://hapi-server.org/servers/#server=CDAWeb&dataset=WI_H0_SWE&return=script WI_H0_SWE Web Service user interface that generates scripts in IDL, Javascript, MATLAB, Python, Autoplot, curl, wget to access this product. See https://hapi-server.org/servers/api for the API. x_Script.IDL x_Script.Javascript x_Script.MATLAB x_Script.Python x_Script.Autoplot x_Script.curl x_Script.wget spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: K. Ogilvie at GSFC Code 692 HAPI visualizations https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=WI_H0_SWE&format=gallery WI_H0_SWE Web Service that generates plots. See https://hapi-server.org/plot/ for the API. PNG PDF SVG Wind Interplanetary Plasma Laboratory (from all.xml/observatory/description/@short) Solar Wind Experiment (from all.xml/instrument/description/@short) Space Physics (from Master/CDFglobalAttributes/Discipline) Interplanetary Studies (from Master/CDFglobalAttributes/Discipline) WIND (from Master/CDFglobalAttributes/Source_name) Wind Interplanetary Plasma Laboratory (from Master/CDFglobalAttributes/Source_name) H0 (from Master/CDFglobalAttributes/Data_type) 6 - 12 sec solar wind electron moments (from Master/CDFglobalAttributes/Data_type) SWE (from all.xml/instrument/@ID) Earth.Magnetosphere.Magnetotail Earth.Magnetosphere Earth.Magnetosheath Earth.NearSurface.AuroralRegion Earth.Magnetosphere.Main Heliosphere.NearEarth Earth.NearSurface.Plasmasphere Heliosphere.Inner Earth.NearSurface.PolarCap Heliosphere Epoch Epoch CATDESC: 'Default time'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.' Scalar Temporal Time_PB5 time_PB5 Master CDF CATDESC: 'Time, centered, in GSFC PB5 format (yr, day, ms)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -2147483648 3 year day msec Electron Temperature, Te Te Master CDF CATDESC: 'Electron Temperature, Te'. Master CDF VAR_NOTES: 'Te = (trace of pressure tensor)/(electron density * Boltzman constant)/3 = (2*Te_perp + Te_para)/3'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Deg K -1e+31 Temperature anisotropy Te_anisotropy Master CDF CATDESC: 'Temperature anisotropy = Te_para / Te_perp'. Master CDF VAR_NOTES: 'Te_perp = average of the perpendicular elements of the temperature tensor. Te_para = parallel component of the temperature tensor.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -1e+31 Electron average energy average_energy Master CDF CATDESC: 'Electron average energy'. Master CDF VAR_NOTES: 'Average energy = (3/2)Boltzmann constant * Te'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' eV -1e+31 Principle axis of pressure tensor -unit vector pa_press_tensor Master CDF CATDESC: 'Principle axis of pressure tensor - unit vector'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -1e+31 3 X GSE Y GSE Z GSE Press. tensor PA dot B unit vector pa_dot_B Master CDF CATDESC: 'Pressure tensor principle axis dot magnetic field unit vector'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -1e+31 heat flux magnitude heat_flux_magn Master CDF CATDESC: 'Electron heat flux magnitude'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' ergs/(cm^2 s) -1e+31 heat flux elevation heat_flux_el Master CDF CATDESC: 'Electron heat flux elevation'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' degrees -1e+31 heat flux azimuth heat_flux_az Master CDF CATDESC: 'Electron heat flux azimuth'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' degrees -1e+31 Heat flux dot B unit vector Q_dot_B Master CDF CATDESC: 'Heat flux dot B unit vector'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -1e+31 Spacecraft Position (GSE) sc_position Master CDF CATDESC: 'Spacecraft Position (GSE)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Earth Radii -1e+31 3 el_bulk_vel_magnitude el_bulk_vel_magn Master CDF CATDESC: 'Electron bulk velocity - magnitude '. Master CDF VAR_NOTES: 'See the global attribute TEXT.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' km/s -1e+31 el_bulk_vel_elevation el_bulk_vel_el Master CDF CATDESC: 'Electron bulk velocity - elevation '. Master CDF VAR_NOTES: 'See the global attribute TEXT.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' degrees -1e+31 el_bulk_vel_azimuth el_bulk_vel_az Master CDF CATDESC: 'Electron bulk velocity - azimuth '. Master CDF VAR_NOTES: 'See the global attribute TEXT.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' degrees -1e+31 Electron density el_density Master CDF CATDESC: 'Electron density'. Master CDF VAR_NOTES: 'See the global attribute TEXT.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' /cc -1e+31 Spacecraft Potential sc_pot Master CDF CATDESC: 'Spacecraft Potential'. Master CDF VAR_NOTES: 'Forst-order estimate only; se the global attribute TEXT.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Volts -1e+31 Quality Flag yet to be defined flag Master CDF CATDESC: 'Quality Flag, yet to be defined'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -32768 major_frame_record _number major_fr_rec Master CDF CATDESC: 'major frame record number'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -2147483648 major_frame_spin_number major_fr_spin_number Master CDF CATDESC: 'Major frame spin number'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -2147483648