2.3.0 spase://GBO/DisplayData/GIRO/SKYMAP/PT15M GIRO Doppler Skymap Plots 2019-05-05T12:34:56Z Collection of GIRO Doppler skymap images at University of Massachusetts Lowell, covering selected ionosonde stations and periods of time from 1993-07-20 to current time, including 28 real-time feeds. Total number of GIRO locations represented is 50 as of February 14, 2012. Access to images is arranged via a webpage containing a browsable data availability table. GIRO skymaps are visualized by plotting received echoes in the polar coordinate system using echo zenith and azimuth information. Color scale is used to represent Doppler Velocity of the signal reflection area in the ionosphere. Additionally, observed echoes on the skymap are used to derived zenith and azimuth of the ionospheric tilt, as well as vertical and horizontal components of the bulk ionospheric motion across the sounder location. Users please acknowledge B. W. Reinisch of the University of Massachusetts Lowell for making these ionogram images available. spase://SMWG/Person/Bodo.W.Reinisch PrincipalInvestigator spase://SMWG/Person/Ivan.A.Galkin DataProducer TechnicalContact GIRO (Global Ionospheric Radio Observatory) Home Page http://giro.uml.edu Access to real-time data and software tools en spase://SMWG/Observatory/GIRO ObservedBy spase://VWO/DisplayData/GIRO/SKYMAP.PT15M spase://VSPO/DisplayData/GIRO/SKYMAP/PT15M spase://SMWG/Repository/UML/DriftBase Online Open GIRO DriftBase Skymap Browser https://ulcar.uml.edu/DriftBase/ Repository of GIRO skymap images at University of Massachusetts Lowell, containing browsable interface to retrieve individual images. en PNG None 700000000 byte PT15M Users please acknowledge B. W. Reinisch of the University of Massachusetts Lowell for making these skymap images available. Calibrated Level 2, Doppler skymap data processed to calculate ionospheric tilt and bulk plasma drift velocity. All images produced by ShowSkymap servlet from raw and processed data. spase://SMWG/Instrument/GIRO/Ionosonde Waves.Active 1987-01-01T00:00:05Z PT5M Cadence of skymap measurements may vary depending on the scheduling requirements at GIRO sites; 15 minutes is nominal cadence PT15M PT1M RadioFrequency PT15M Earth.NearSurface.Ionosphere Skymap Echo Bulk Plasma Velocity Ionospheric Tilt Signal Strength Received signal strength, expressed as AC Electric Field in dB units relative to digitizer 1. PT15M dB PlasmaWaves Magnitude Pseudo ACElectricField RadioFrequency 500 30000 kHz