{ "id": "TIMED_EDP_GUVI", "url": "http://hpde.io/VITMO/NumericalData/TIMED/GUVI/Electron_Density_Product", "data-file": "./data/spase_hpde_io/info/TIMED_EDP_GUVI.json", "data": { "Spase": { "xmlns": "http://www.spase-group.org/data/schema", "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance", "xsi:schemaLocation": "http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_2_2.xsd", "Version": "2.2.2", "NumericalData": { "ResourceID": "spase://VITMO/NumericalData/TIMED/GUVI/Electron_Density_Product", "ResourceHeader": { "ResourceName": "TIMED GUVI L2B Electron Density Profiles", "ReleaseDate": "2017-01-24T00:00:00Z", "Description": "The Level-2 Electron Density Profiles data product contains F-region electron density as a function of altitude and latitude derived from the GUVI limb data. Summaries of estimated peak electron density and total electron content are also given as Level 3 products.\nThe profiles are derived from the 135.6-nm channel of the GUVI limb data. The 135.6-nm emission at night is due almost exclusively to recombination of O+ ions. Since O+ is the primary ion in the F region, the 135.6-nm volume emission rate is closely related to the square of the electron density.\nDetails of the procedure of producing the electron densities are given in: DeMajistre, R., L.J. Paxton, D. Morrison, J-H. Yee, L.P. Goncherenko and A.B. Christensen, Retrievals of nighttime electron density from Thermosphere Ionosphere Mesosphere and Dynamics (TIMED) mission Global Ultraviolet Imager (GUVI) Measurements, J. Geophys Res., 109, A05305, doi:10.1029/2003JA010296.\n ", "Acknowledgement": "NASA, Andrew B. Christensen", "Contact": { "PersonID": "spase://SMWG/Person/Andrew.B.Christensen", "Role": "PrincipalInvestigator" }, "InformationURL": { "Name": "Electron Density Profiles description", "URL": "http://guvitimed.jhuapl.edu/sites/default/files/data/documents/readme_GUVI_Version_13_Limb_Retrievals.pdf" } }, "AccessInformation": [ { "RepositoryID": "spase://SMWG/Repository/TIMED/GUVI_POC", "Availability": "Online", "AccessRights": "Open", "AccessURL": { "Name": "GUVI POC L2B Electron Density Product (IDLsave) Data Request", "URL": "http://guvitimed.jhuapl.edu/data_fetch_l2b_edp_netcdf", "Description": "This web page allows the request of data files for this product. To request data: select the year and day then press display." }, "Format": "NetCDF", "Encoding": "None", "Acknowledgement": "NASA, Andrew B. Christensen" }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "AccessURL": { "Name": "CDAWeb", "URL": "https://cdaweb.gsfc.nasa.gov/sp_phys/", "ProductKey": "TIMED_EDP_GUVI", "Description": " TIMED GUVI L2 data with subset, plot, list from CDAWeb" }, "Format": "Text", "Acknowledgement": "Please acknowledge the support from the CDAWeb team at GSFC/SPDF." } ], "ProcessingLevel": "Calibrated", "ProviderResourceName": "GUVI L2B Electron Density Product", "ProviderProcessingLevel": "Level 2B", "InstrumentID": "spase://SMWG/Instrument/TIMED/GUVI", "MeasurementType": "Profile", "TemporalDescription": { "TimeSpan": { "StartDate": "2002-03-22T00:00:00.000Z", "StopDate": "2007-12-11T00:00:00.000Z" } }, "ObservedRegion": "Earth.NearSurface.Ionosphere", "Keyword": [ "TIMED", "GUVI", "lower thermosphere", "MLTI" ], "Parameter": { "glat": { "Name": "Geographic Latitude", "ParameterKey": "glat", "Description": "Geographic Latitude (registered at ~300km)", "Units": "degrees", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Positional" } }, "glon": { "Name": "Geographic Longitude", "ParameterKey": "glon", "Description": "Geographic Longitude (registered at ~300km)", "Units": "degrees", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Positional" } }, "mlat": { "Name": "Geomagnetic Latitude", "ParameterKey": "mlat", "Description": "Geomagnetic (simple dipole) Latitude (registered at ~300km)", "Units": "degrees", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Positional" } }, "mlon": { "Name": "Geomagnetic Longitude", "ParameterKey": "mlon", "Description": "Geomagnetic (simple dipole) Longitude (registered at ~300km)", "Units": "degrees", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Positional" } }, "time": { "Name": "Time", "ParameterKey": "time", "Description": "Universal Time of observation in number of milliseconds since start of current day. Timestamp marks beginning of interval", "Units": "ms", "UnitsConversion": "1e-3>s", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "ValidMin": "0", "ValidMax": "86399999", "Support": { "SupportQuantity": "Temporal" } }, "ep": { "Name": "Electron Density", "ParameterKey": "ep", "Description": "Electron Density Profiles Data", "Units": "cm-3", "Structure": { "Size": "23", "Description": "Dimensions: [23,n] - where 23 is the number of levels in a profile; n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Particle": { "ParticleType": "Electron", "ParticleQuantity": "NumberDensity" } }, "sigep": { "Name": "Retrieved Uncertainty in Electron Density", "ParameterKey": "sigep", "Description": "Retrieved Uncertainty in Electron Density", "Units": "cm-3", "Structure": { "Size": "23", "Description": "Dimensions: [23,n] - where 23 is the number of levels in a profile; n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Particle": { "ParticleType": "Electron", "ParticleQuantity": "NumberDensity" } }, "ver": { "Name": "Volume Emission Rate", "ParameterKey": "ver", "Description": "Volume Emission Rate", "Units": "Rayleighs", "Structure": { "Size": "23", "Description": "Dimensions: [23,n] - where 23 is the number of levels in a profile; n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Wave": { "WaveType": "Electromagnetic", "WaveQuantity": "Emissivity" } }, "sigver": { "Name": "Uncertainty in Volume Emission Rate", "ParameterKey": "sigver", "Description": "Uncertainty in Volume Emission Rate", "Units": "Rayleighs", "Structure": { "Size": "23", "Description": "Dimensions: [23,n] - where 23 is the number of levels in a profile; n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Wave": { "WaveType": "Electromagnetic", "WaveQuantity": "Emissivity" } }, "oden": { "Name": "Atomic Oxygen Density Profile", "ParameterKey": "oden", "Description": "Atomic Oxygen Density Profile (from MSIS)", "Units": "cm-3", "Structure": { "Size": "23", "Description": "Dimensions: [23,n] - where 23 is the number of levels in a profile; n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Particle": { "ParticleType": "Atom", "ParticleQuantity": "NumberDensity" } }, "ver0": { "Name": "Uncorrected Volume Emission Rate", "ParameterKey": "ver0", "Description": "Volume Emission Rate (no mutual neutralization correction)", "Units": "Rayleigh", "Structure": { "Size": "23", "Description": "Dimensions: [23,n] - where 23 is the number of levels in a profile; n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Wave": { "WaveType": "Electromagnetic", "WaveQuantity": "Emissivity" } }, "sigver0": { "Name": "Uncertainty in Uncorrected Volume Emission Rate", "ParameterKey": "sigver0", "Description": "Uncertainty in Volume Emission Rate (no mutual neutralization correction", "Units": "Rayleighs", "Structure": { "Size": "23", "Description": "Dimensions: [23,n] - where 23 is the number of levels in a profile; n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Wave": { "WaveType": "Electromagnetic", "WaveQuantity": "Emissivity" } }, "nmf2": { "Name": "Chapman Layer Maximum Density", "ParameterKey": "nmf2", "Description": "Chapman Layer Maximum Density", "Units": "cm-3", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "rmf2": { "Name": "Chapman Layer Maximum Radius", "ParameterKey": "rmf2", "Description": "Chapman Layer Maximum Radius", "Units": "km", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "hmf2": { "Name": "Chapman Layer Topside Scaleheight", "ParameterKey": "hmf2", "Description": "Chapman Layer Topside Scaleheight", "Units": "unitless", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "signmf2": { "Name": "Uncertainty in Chapman Layer Maximum Density", "ParameterKey": "signmf2", "Description": "Uncertainty in Chapman Layer Maximum Density", "Units": "cm -3", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "sigrmf2": { "Name": "Uncertainty in Chapman Layer Maximum Radius", "ParameterKey": "sigrmf2", "Description": "Uncertainty in Chapman Layer Maximum Radius", "Units": "km", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "sighmf2": { "Name": "Uncertainty in Chapman Layer Topside Scaleheight", "ParameterKey": "sighmf2", "Description": "Uncertainty in Chapman Layer Topside Scaleheight", "Units": "unitless", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "acmlat": { "Name": "AACGM Geomagnetic Latitude", "ParameterKey": "acmlat", "Description": "Geomagnetic (AACGM) Latitude (registered at ~300km)", "Units": "degrees", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Positional" } }, "acmlon": { "Name": "AACGM Geomagnetic Longitude", "ParameterKey": "acmlon", "Description": "Geomagnetic (AACGM) Longitude (registered at ~300km)", "Units": "degrees", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Positional" } }, "re": { "Name": "Earth radius", "ParameterKey": "re", "Description": "Earth radius at the given geographic latitude", "Units": "km", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "ind": { "Name": "Index map", "ParameterKey": "ind", "Description": "Index map into level 1B file", "Units": "unitless", "Structure": { "Size": "", "Description": "Dimensions: [n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "k_nonpar_r": { "Name": "EDP/VER radius grid", "ParameterKey": "k_nonpar_r", "Description": "EDP/VER radius grid where altitude grid is (k_nonpar_r - re)", "Units": "km", "Structure": { "Size": "23", "Description": "Dimensions: [23] - where 23 is the number of levels in a profile." }, "Support": { "SupportQuantity": "Other" } }, "k_nonpar_thetapix": { "Name": "Observational Angles for Observation", "ParameterKey": "k_nonpar_thetapix", "Description": "Observational Angles for Observation where tangent altitudes are (625.+Re)*sin(k_nonpar_thetapix) - re", "Units": "radian", "Structure": { "Size": "32", "Description": "Dimensions: [32]." }, "Support": { "SupportQuantity": "Other" } }, "pf": { "Name": "Chapman Layers Parameters Existence flag", "ParameterKey": "pf", "Description": " If 1, chapman layers parameters present, 0 if not", "Units": "", "Structure": { "Size": "1", "Description": "Dimensions: [1] - a single value per orbital file." }, "Support": { "SupportQuantity": "Other" } }, "prof": { "Name": "Radiances at 135.6 nm", "ParameterKey": "prof", "Description": "Radiances at 135.6 nm", "Units": "Rayleigh", "Structure": { "Size": "32 14", "Description": "Dimensions: [32,14,n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "dprof": { "Name": "Uncertainties of Radiances at 135.6 nm", "ParameterKey": "dprof", "Description": "Uncertainties of Radiances at 135.6 nm", "Units": "Rayleigh", "Structure": { "Size": "32 14", "Description": "Dimensions: [32,14,n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "hpcor": { "Name": "H+ Correction flag", "ParameterKey": "hpcor", "Description": "H+ correction from IRI made, -1 if not", "Units": "", "Structure": { "Size": "1", "Description": "Dimensions: [1] - a single value per orbital file." }, "Support": { "SupportQuantity": "Other" } }, "ncomb(nonvariant_var)": { "Name": "Number of limb scans for smoothing", "ParameterKey": "ncomb(nonvariant_var)", "Description": "Number of limb scans for smoothing", "Units": "", "Structure": { "Size": "1", "Description": "Dimensions: [1] - a single value per orbital file." }, "Support": { "SupportQuantity": "Other" } }, "k_nonpar_w0": { "Name": "", "ParameterKey": "k_nonpar_w0", "Description": "", "Units": "", "Structure": { "Size": "448", "Description": "Dimensions: [448,n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "k_nonpar_w1": { "Name": "", "ParameterKey": "k_nonpar_w1", "Description": "", "Units": "", "Structure": { "Size": "448", "Description": "Dimensions: [448,n] - where n is the number of profiles (i.e., records) in an orbital file (n is approximately 136)." }, "Support": { "SupportQuantity": "Other" } }, "k_nonpar_w0c": { "Name": "", "ParameterKey": "k_nonpar_w0c", "Description": "", "Units": "", "Structure": { "Size": "32 2", "Description": "Dimensions: [32,2]." }, "Support": { "SupportQuantity": "Other" } }, "k_nonpar_w1c": { "Name": "", "ParameterKey": "k_nonpar_w1c", "Description": "", "Units": "", "Structure": { "Size": "32 2", "Description": "Dimensions: [32,2]." }, "Support": { "SupportQuantity": "Other" } }, "k_par_r": { "Name": "", "ParameterKey": "k_par_r", "Description": "", "Units": "", "Structure": { "Size": "50", "Description": "Dimensions: [50]." }, "Support": { "SupportQuantity": "Other" } }, "k_par_thetapix": { "Name": "", "ParameterKey": "k_par_thetapix", "Description": "", "Units": "", "Structure": { "Size": "32", "Description": "Dimensions: [32]." }, "Support": { "SupportQuantity": "Other" } }, "k_par_w0": { "Name": "", "ParameterKey": "k_par_w0", "Description": "", "Units": "", "Structure": { "Size": "448 50", "Description": "Dimensions: [448,50]." }, "Support": { "SupportQuantity": "Other" } }, "k_par_w1": { "Name": "", "ParameterKey": "k_par_w1", "Description": "", "Units": "", "Structure": { "Size": "448 50", "Description": "Dimensions: [448,50]." }, "Support": { "SupportQuantity": "Other" } } } } } } }