2.5.0 spase://IUGONET/NumericalData/ISEE/Riometer/ZGN/PT1S_cna_cdf CDF data of cosmic noise absorption measured with the 30MHz imaging broadbeam at Zhigansk, Russia. 2017-06-01T00:00:00 Cosmic Noise Absorption (CNA) measured at 1-sec intervals with the 30MHz broadbeam riometer at Zhigansk, Russia. The data are distributed in the Common Data Format (CDF). Riometer Data. PI: Kazuo Shiokawa and Shinichiro Oyama, Institute for Space-Earth Environmental Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan. Rules of the Road for OMTI ASI Data Use: 1. Please contact the Principal Investigator (PI), K. Shiokawa (shiokawa at isee.nagoya-u.ac.jp) or S. Oyama, ISEE, Nagoya University before using the data at any publications and/or presentations. 2. Please cite Shiokawa et al. (1999) and/or Shiokawa et al. (2009) in the publication. The detailed citation is: * Shiokawa et al., Earth Planets Space, 51, p.887-896, 1999. * Shiokawa et al., Earth Planets Space, 61, p.479-491, 2009. For more information, see http://stdb2.isee.nagoya-u.ac.jp/omti/ spase://IUGONET/Person/Kazuo.Shiokawa PrincipalInvestigator spase://IUGONET/Person/ISEE.Metadata.Management.Group MetadataContact spase://IUGONET/Repository/ISEE/ERG-SC Online Open https://ergsc.isee.nagoya-u.ac.jp/index.shtml.en CDF spase://IUGONET/Instrument/ISEE/Riometer/ZGN/riometer Waves 2017-09-17T00:00:00 P1D Earth.NearSurface.Ionosphere.ERegion Earth.NearSurface.Ionosphere.DRegion Spherical WGS84 66.78 67.28 66.28 123.37 123.87 122.87 EARTH SCIENCE Sun-earch Interaction Ionosphere/Magnetosphere Dynamics Aurorae Epoch for the cna data epoch_1sec time label in CDF_EPOCH (the number of milliseconds since 01-Jan-0000) for the cna data. All time values are in the universal time. millisecond Temporal Cosmic Noise Absorption (CNA) cna CNA values at 30 MHz measured with 8x8-element Imaging Riometer. PT1S decibel (dB) 8 8 Electromagnetic Absorption 29.9 30.1 MHz Quiet-Day Curve (QDC) qdc QDC values derived at 1-min resolution for the 8x8-element Imaging Riometer. PT1M decibel (dB) 8 8 Electromagnetic Absorption 29.9 30.1 MHz Azimuth angle of each antenna beam azimuth_angle degree 8 8 Other Zenith angle of each antenna beam zenith_angle degree 8 8 Other Geographic latitude of each antenna beam center at D-region altitude glat_beam degree 8 8 Other Geographic longitude of each antenna beam center at D-region altitude glon_beam degree 8 8 Other