2.3.1 spase://GBO/NumericalData/AWESOME/VLF/PT0.00001S AWESOME receiver system broadband VLF data https://doi.org/10.48322/fzcf-f191 2020-09-28T21:24:52Z The Very Low Frequency Atmospheric Weather Electromagnetic System for Observation, Modeling, and Education, or VLF AWESOME, completed in 2004 provides high sensitivity broadband radio measurements of natural lightning emissions, transmitting beacons, and radio emissions from the near-Earth space environment over the frequency band 0.8-50 kHz. Most of the data is collected on two air-core loop antennas, oriented orthogonal, to collect the two horizontal components of the magnetic field. The north-south, or N/S antenna is sensitive mostly to waves arriving from the north of from the south direction, meaning it picks up the magnetic field component in the east-west direction. The other antenna is the east-west antenna, which is the opposite. Broadband data contain direct samples of the receiver output, usually at 100 kHz or 1 MHz sampling frequency. These files essentially contain everything that the receiver records, entirely uncompressed. The files are very large, for instance just one minute of VLF data will produce a ~12 MB file for each antenna channel. This adds up to 35 GB per day if you have two antenna channels. DATA USAGE POLICY The data in the WALDO database have been collected by Stanford University, the Georgia Institute of Technology, and the University of Colorado Denver. Funding has been provided by the United States government under various basic science research grants over many years. To maximize the benefit of those investments, WALDO data are released without restriction, and can be freely analyzed or published. The curators of WALDO are Morris Cohen (Georgia Tech) and Mark Golkowski (CU-Denver). We request that the following acknowledgement be added in any publication using data from WALDO "VLF data are provided by the WALDO database (http://waldo.world), operated jointly by the Georgia Institute of Technology, and the University of Colorado Denver, using data collected from those institutions as well as Stanford University, and has been supported by various US government grants from the NSF, NASA, and the Department of Defense." If extensive amounts of WALDO data are used in a publication, the curators request, but do not require, to be contacted to discuss the possibility of joint authorship, with the WALDO curators providing help analyzing and interpreting the large dataset. Umran S. Inan, Morris B. Cohen, Mark A. Golkowski 2020-01-01T00:00:00Z Worldwide Archive of Low frequency Data and Observations (WALDO) spase://SMWG/Person/Morris.Cohen ArchiveSpecialist Worldwide Archive of Low-Frequency Data and Observations (WALDO) http://waldo.world spase://SMWG/Repository/WALDO Worldwide Archive of Low-Frequency Data and Observations (WALDO) Broadband Data http://waldo.world/broadband-data/ MATLAB_4 VLF data are provided by the WALDO database (http://waldo.world), operated jointly by the Georgia Institute of Technology, and the University of Colorado Denver, using data collected from those institutions as well as Stanford University, and has been supported by various US government grants from the NSF, NASA, and the Department of Defense. spase://SMWG/Instrument/AWESOME/VLF Waves.Passive 1986-05-01T11:11:14 -P3Y Earth.NearSurface Earth.NearSurface.Ionosphere start_year Temporal start_month Temporal start_day Temporal start_hour Temporal start_minute Temporal start_second Temporal latitude Positional longitude Positional altitude Positional Fs Sampling rate of the data, usually 100 kHz or 1 MHz. PT0.000001S PT0.00001S Other gps_quality DataQuality adc_channel_number Other adc_sn Other adc_type Other antenna_bearings Orientation antenna_description InstrumentMode cal_factor Other computer_sn Other gps_sn Other hardware_description InstrumentMode is_broadband InstrumentMode station_description Other station_name Other VERSION Other data Electromagnetic ACMagneticField RadioFrequency 0.3 50 kHz