<_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/twins1_tistorm_imager_00000000_v01.json (from all.xml) spase://NASA/NumericalData/TWINS1/ENA/TISTORM/PT72S <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json Images of plasma sheet ion temperature during storms calculated from ENA measurements <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description twins1_TiStorm_Imager <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source TWINS (Two Wide-angle Imaging Neutral-atom Spectrometers) is a Mission of Opportunity under NASA's Small Explorer (SMEX) program. TWINS-1 and TWINS-2 are the designations for NASA-sponsored instruments flying on unspecified non-NASA U.S. government spacecraft.The TWINS-1 instrument high voltages were turned on in April 2007 and the TWINS-2 high voltages in May 2008; the exact launchdates are not available. The data (including both science data and spacecraft ephemeris/attitude information) from the two NASA-funded science instruments are publicly available to the scientific research community. See http://twins.swri.edu/TWINS is a stereo mission whose overall scientific objective is to establish the global connectivities and causal relationships between processes in different regions of the Earth.s magnetosphere. To meet this goal, TWINS-1 and TWINS-2 provide stereoscopic neutral atom imaging of the magnetosphere from two widely spaced, high-altitude, high-inclination spacecraft. TWINS instrumentation includes an energetic neutral atom (ENA) imager to capture charge-exchange-produced neutral atoms over a broad energy range (approximately 1-100 keV) and a Lyman-alpha detector to measure the density of the neutral hydrogen geocorona needed for extraction of magnetospheric ion fluxes from neutral atom data.The TWINS-1 and TWINS-2 instruments are identical. Each spacecraft carrying TWINS instruments is in a Molniya orbit (63.4 deg, 7.2 Re apogee, 1000 km perigee; period 12 h), and is three-axis stabilized and approximately nadir-pointing. Each acquires image data with time resolution of 60 s. The time required to change actuator direction between scans (no data collection) was 25 seconds from June 2008 to July 2009, and 12 seconds at all other times. This gives an effective cadence of 72 or 85 seconds. The nominal design lifetime for each instrument is four years. TWINS operates only during the apogee portion of each orbit, when the spacecraft is above the radiation belts.More detailed information is available at the TWINS home page http://twins.swri.edu/ <_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/ Initial Inventory CDAWeb TWINS List of Events and Sample Plots https://cdaweb.gsfc.nasa.gov/TWINS_info.html Initial Inventory CDAWeb Two Wide-angle Imaging Neutral-atom Spectrometers, TWINS, List of Events and Sample Plots <_Note>URL also in all.xml, master. Using InformationURL.json. https://science.nasa.gov/mission/twins the TWINS Southwest Research Institute web site Release notes and other information available at <_Note>URL also in all.xml. Using master. TWINS Release Notes and other Information, SwRI Web Site https://earth.esa.int/web/eoportal/satellite-missions/t/twins/ Two Wide-angle Imaging Neutral-atom Spectrometers, TWINS, Release Notes and other Information, Southwest Research Institute, SwRI, Web Site <_Note>Source: InformationURL.json https://doi.org/10.48322/cre5-4g28 <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json 2008-06-15T05:31:20Z 2013-12-09T03:10:34Z <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop <_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/TWINS1/ENA ImageIntensity spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Amy Keesee at West Virginia University HTTPS from SPDF https://cdaweb.gsfc.nasa.gov/pub/data/twins/twins1/tistorm_imager In CDF via HTTP from CDAWeb twins1_tistorm_imager_%Y%m%d%H%M_%Q.cdf %Y TWINS1_TISTORM_IMAGER CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Amy Keesee at West Virginia University FTPS from SPDF ftps://cdaweb.gsfc.nasa.gov/pub/data/twins/twins1/tistorm_imager In CDF via HTTP from CDAWeb twins1_tistorm_imager_%Y%m%d%H%M_%Q.cdf %Y TWINS1_TISTORM_IMAGER CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Amy Keesee at West Virginia University 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. TWINS1_TISTORM_IMAGER 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: Amy Keesee at West Virginia University CDAWeb Web Service user interface https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=TWINS1_TISTORM_IMAGER TWINS1_TISTORM_IMAGER 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: Amy Keesee at West Virginia University CDAWeb Python Script https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/TWINS1_TISTORM_IMAGER/clientLibraryExample/ TWINS1_TISTORM_IMAGER 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: Amy Keesee at West Virginia University 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=TWINS1_TISTORM_IMAGER TWINS1_TISTORM_IMAGER 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: Amy Keesee at West Virginia University CDAWeb HAPI Server https://hapi-server.org/servers/#server=CDAWeb&dataset=TWINS1_TISTORM_IMAGER TWINS1_TISTORM_IMAGER 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: Amy Keesee at West Virginia University CDAWeb HAPI Script in Multiple Languages https://hapi-server.org/servers/#server=CDAWeb&dataset=TWINS1_TISTORM_IMAGER&return=script TWINS1_TISTORM_IMAGER 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: Amy Keesee at West Virginia University HAPI visualizations https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=TWINS1_TISTORM_IMAGER&format=gallery TWINS1_TISTORM_IMAGER Web Service that generates plots. See https://hapi-server.org/plot/ for the API. PNG PDF SVG Two Wide-angle Imaging Neutral-atom Spectrometers 1 (from all.xml/observatory/description/@short) image data (from all.xml/instrument/description/@short) Space Physics (from Master/CDFglobalAttributes/Discipline) Magnetospheric Science (from Master/CDFglobalAttributes/Discipline) TWINS1 (from Master/CDFglobalAttributes/Source_name) Two Wide-angle Imaging Neutral-atom Spectrometers 1 (from Master/CDFglobalAttributes/Source_name) TiStorm (from Master/CDFglobalAttributes/Data_type) IMAGER (from all.xml/instrument/@ID) Earth.Magnetosphere.Magnetotail Earth.Magnetosphere Earth.Magnetosheath Earth.Magnetosphere.RadiationBelt Earth.Magnetosphere.Main Epoch Epoch CATDESC: 'Epoch'. 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 start time starttime Master CDF CATDESC: 'start time'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' mjd -1e+31 stop time stoptime Master CDF CATDESC: 'stop time'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' mjd -1e+31 Sweeps min sweepsMin Master CDF CATDESC: 'Number of TWINS sweeps used - minimun'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -1.0 Sweeps max sweepsMax Master CDF CATDESC: 'Number of TWINS sweeps used - maximum'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -1.0 flux fluxarrays Master CDF CATDESC: '[NO PLOT] Average ENA flux images for different energies projected along the LOS to the bins in the GSM xy plane'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 19 160 160 ENA flux 2keV flux2 Master CDF CATDESC: 'ENA flux image in GSM at 2keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 8keV flux8 Master CDF CATDESC: '------------> 8keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 14keV flux14 Master CDF CATDESC: '------------> 14keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 20keV flux20 Master CDF CATDESC: '------------> 20keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 24keV flux24 Master CDF CATDESC: '------------> 24keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 32keV flux32 Master CDF CATDESC: '------------> 32keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 45keV flux45 Master CDF CATDESC: '------------> 45keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux GSMx=20 flux_x20 Master CDF CATDESC: 'ENA flux vs energy along GSM-y at GSM-x=20Re'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 19 ENA flux at GSMx=10 flux_x10 Master CDF CATDESC: '----------> along GSM-y at GSM-x=10 Re'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 19 ENA flux at GSMy=-5 flux_yneg5 Master CDF CATDESC: '----------> along GSM-x at GSM-y=-5 Re'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 19 ENA flux at GSMy=5 flux_y5 Master CDF CATDESC: '----------> along GSM-x at GSM-y=5 Re'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 19 ENA flux 2keV flux2M Master CDF CATDESC: 'ENA flux Movie image in GSM at 2keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 8keV flux8M Master CDF CATDESC: '------------> Movie at 8keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 14keV flux14M Master CDF CATDESC: '------------> Movie at 14keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 20keV flux20M Master CDF CATDESC: '------------> Movie at 20keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 24keV flux24M Master CDF CATDESC: '------------> Movie at 24keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 32keV flux32M Master CDF CATDESC: '------------> Movie at 32keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux 45keV flux45M Master CDF CATDESC: '------------> Movie at 45keV'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 160 ENA flux GSMx=20 flux_x20M Master CDF CATDESC: 'ENA flux vs energy movie along GSM-y at GSM-x=20Re'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 19 ENA flux at GSMx=10 flux_x10M Master CDF CATDESC: '----------> Movie along GSM-y at GSM-x=10 Re'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 19 ENA flux at GSMy=-5 flux_yneg5M Master CDF CATDESC: '----------> Movie along GSM-x at GSM-y=-5 Re'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 19 ENA flux at GSMy=5 flux_y5M Master CDF CATDESC: '----------> Movie along GSM-x at GSM-y=5 Re'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 160 19 count countarrays Master CDF CATDESC: '[NO PLOT] countarrays: Number of flux values in each energy-spatial bin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Re -1e+31 19 160 160 Ti temparrays Master CDF CATDESC: 'Ion temperature images calculated from ENA fluxes in each GSM spatial bin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' keV -1e+31 160 160 Ti temparraysM Master CDF CATDESC: '--> Movie of Ion temperature images calculated from ENA fluxes in each GSM spatial bin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' keV -1e+31 160 160 time interval tot_time1 Master CDF CATDESC: 'Time interval used for Ti calculation'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' mjd -1e+31 tot_sweeps tot_sweeps1 Master CDF CATDESC: 'total number of TWINS actuator sweeps in the interval'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -1.0 Error algorithm errorarrays Master CDF CATDESC: '[NO PLOT] Error in each energy-space bin based on the error given by the algorithm that calculates the flux from the raw TWINS data.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' (eV cm2 sr s)-1 -1e+31 19 160 160 Count error counterrors Master CDF CATDESC: '[NO PLOT] Another error value determined as 1/sqrt(countarrays).'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -1e+31 19 160 160 Pointing Err/deg delta_deg Master CDF CATDESC: 'Uncertainty in the angle that gives the direction in which the TWINS instrument is pointing.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' deg -1e+31