<_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/po_6secEdsc_efi_00000000_v01.json (from all.xml) spase://NASA/NumericalData/POLAR/EFI/Despun/PT6S <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json Polar Electric Field (x,y) in Despun Spacecraft Coordinates <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description po_6secEdsc_efi <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source Important Warning: The data described below is meant for archival purposes. It should not be considered as highly accurate data. For example, accurate data requires a correction in the form of an offset to the Sunward component of the electric field. A constant offset of 1.2 mV/m has been used for all the data, this being an approximate average value. In fact, however, the offset varies with time, and must be determined by analysis of the particular time of interest. Users of this data desiring more information should get in touch with Dr. Forrest Mozer, at the Space Sciences Laboratory, University of California, Berkeley.The electric field data is at spin period time resolution. This means that there is 1 data point about every 6 seconds. However, it should be noted that there can be longer intervals between data points, due to missing data. Data gaps are not filled in.The components of the electric field are given in a coordinate system designated as Despun Spacecraft Coordinates , or DSC. This is a coordinate system for a rotating spacecraft that is in an orbit near the Earth. DSC is defined by the spacecraft's spin plane and spin axis. However, as the Despun part of the name suggests, the coordinate axes do not participate of the spacecraft's rotation. The X and Y axes are on the spacecraft's spin plane; the Z axis is along the spacecraft's spin axis. The positive X, Y, and Z axes form an orthogonal, right-handed coordinate system. The positive Z axis points in the same direction as the spacecraft's angular momentum (or spin or attitude) vector. The positive X axis points in the direction on the spin plane that is closest to the direction towards the Sun. In other words, the positive X axis points in the direction of the projection on the spin plane of the vector from the spacecraft to the Sun. The positive Y axis is determined by the requirement that the DSC system (X, Y, Z) be an orthogonal right-handed system. It follows that the positive Y axis points in the direction on the spin plane that is 90 degrees ahead of the positive X axis (in the sense of the spacecraft's rotation). The electric field data included in these files consists of 2 electric field components on the spin plane. The original data used is V34L, which typically has a time resolution of about 40 data points per second. A least-squares spin fit of V34L is performed, and the spin fit coefficients provide the spin plane components of the spin period electric field. Time is a real double-precision quantity. The units for the time are seconds. The time is time elapsed since the FAST Mission Epoch, which is May 24, 1968 (1968/05/24) at 00:00:00 UT. Each time tag indicates the mid-point of the time interval for the corresponding spin period. Data gaps are not filled; each time tag corresponds to an actual data point. E_X and E_Y are the X and Y components of the electric field in the DSC coordinate system (note that both the X and the Y component are present, despite the X in the file name). E_X and E_Y are real single-precision quantities. The units for the electric field components are mV/m. There are no missing data values; each data point value corresponds to an actual data point. <_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/ https://doi.org/10.48322/vkpj-6n73 <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json 1996-03-16T00:00:11Z 2008-04-12T23:54:57Z <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop PT5.978S <_Cadence>Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/polar/efi/efi_6secedsc/1996/po_6secEdsc_efi_19960316_v01.cdf. The most common cadence, 5978 [ms] = PT5.978S, occurred for 65.5579% of the 9441 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/POLAR/EFI ElectricField spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Mozer at UC Berkeley HTTPS from SPDF https://cdaweb.gsfc.nasa.gov/pub/data/polar/efi/efi_6secedsc In CDF via HTTP from CDAWeb po_6secEdsc_efi_%Y%m%d_%Q.cdf %Y PO_6SECEDSC_EFI CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Mozer at UC Berkeley FTPS from SPDF ftps://cdaweb.gsfc.nasa.gov/pub/data/polar/efi/efi_6secedsc In CDF via HTTP from CDAWeb po_6secEdsc_efi_%Y%m%d_%Q.cdf %Y PO_6SECEDSC_EFI CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Mozer at UC Berkeley 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. PO_6SECEDSC_EFI 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: Mozer at UC Berkeley CDAWeb Web Service user interface https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=PO_6SECEDSC_EFI PO_6SECEDSC_EFI 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: Mozer at UC Berkeley CDAWeb Python Script https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/PO_6SECEDSC_EFI/clientLibraryExample/ PO_6SECEDSC_EFI 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: Mozer at UC Berkeley 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=PO_6SECEDSC_EFI PO_6SECEDSC_EFI 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: Mozer at UC Berkeley CDAWeb HAPI Server https://hapi-server.org/servers/#server=CDAWeb&dataset=PO_6SECEDSC_EFI PO_6SECEDSC_EFI 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: Mozer at UC Berkeley CDAWeb HAPI Script in Multiple Languages https://hapi-server.org/servers/#server=CDAWeb&dataset=PO_6SECEDSC_EFI&return=script PO_6SECEDSC_EFI 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: Mozer at UC Berkeley HAPI visualizations https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=PO_6SECEDSC_EFI&format=gallery PO_6SECEDSC_EFI Web Service that generates plots. See https://hapi-server.org/plot/ for the API. PNG PDF SVG Polar Plasma Laboratory (from all.xml/observatory/description/@short) Electric Field Instrument (from all.xml/instrument/description/@short) Space Physics (from Master/CDFglobalAttributes/Discipline) Magnetospheric Science (from Master/CDFglobalAttributes/Discipline) 6secEdsc (from Master/CDFglobalAttributes/Data_type) 6 second Electric Field components Despun Spacecraft Coordinates (DSC) (from Master/CDFglobalAttributes/Data_type) EFI (from all.xml/instrument/@ID) Earth.NearSurface.Ionosphere Earth.Magnetosphere Earth.NearSurface.AuroralRegion Earth.NearSurface.EquatorialRegion Earth.NearSurface.Plasmasphere Earth.Magnetosphere.Polar Heliosphere.Inner Earth.NearSurface.PolarCap Earth.Magnetosphere.RadiationBelt Earth.NearSurface Time relative to midnight January 1, 0 AD Epoch CATDESC: 'Time relative to midnight January 1, 0 AD, Scalar'. 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.' ms Scalar Temporal X comp E-Field (DSC) E_X Master CDF CATDESC: 'X component of the electric field, DSC coordinate system'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' mV/m -1e+31 Y comp E-Field (DSC) E_Y Master CDF CATDESC: 'Y component of the electric field, DSC coordinate system'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' mV/m -1e+31