{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "NASA Space Physics Data Facility", "hasEmail": "mailto:NASA-SPDF-Support@nasa.onmicrosoft.com"}, "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. The 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. Details 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.", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "ftps://spdf.gsfc.nasa.gov/pub/data/timed/guvi/levels/level2b_e/edp/cdf/", "format": "BIN", "mediaType": "application/octet-stream"}, {"@type": "dcat:Distribution", "downloadURL": "http://guvitimed.jhuapl.edu/data_fetch_l2b_edp_netcdf", "format": "BIN", "mediaType": "application/octet-stream"}, {"@type": "dcat:Distribution", "downloadURL": "http://guvitimed.jhuapl.edu/sites/default/files/data/documents/readme_GUVI_Version_13_Limb_Retrievals.pdf", "format": "PDF", "mediaType": "application/pdf"}, {"@type": "dcat:Distribution", "downloadURL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=TIMED_EDP_GUVI&index=sp_phys", "format": "BIN", "mediaType": "application/octet-stream"}, {"@type": "dcat:Distribution", "downloadURL": "https://cdaweb.gsfc.nasa.gov/hapi", "format": "BIN", "mediaType": "application/octet-stream"}, {"@type": "dcat:Distribution", "downloadURL": "https://helio.data.nasa.gov/dataset/TIMED_GUVI_Electron_Density_Product", "format": "BIN", "mediaType": "application/octet-stream"}, {"@type": "dcat:Distribution", "downloadURL": "https://hpde.io/NASA/NumericalData/TIMED/GUVI/Electron_Density_Product", "format": "BIN", "mediaType": "application/octet-stream"}], "identifier": "https://doi.org/10.48322/pzbn-gq12", "keyword": ["guvi", "lower-thermosphere", "mlti", "profile", "timed"], "landingPage": "https://doi.org/10.48322/pzbn-gq12", "license": "https://www.usa.gov/government-works", "modified": "2026-09-01", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "GUVI_POC, CDAWeb"}, "theme": ["Heliophysics"], "title": "TIMED GUVI L2B Electron Density Profiles"}