Version:2.5.0
NumericalData
ResourceID
spase://IUGONET/NumericalData/NIPR/misc/SYO/IRIO30MHz/PT1S_cna_cdf
ResourceHeader
ResourceName
CDF data of cosmic noise absorption measured with the 30MHz imaging riometer at Syowa Station, Antarctica.
ReleaseDate
2013-08-30 12:00:00
Description
Cosmic Noise Absorption (CNA) measured at 1-sec intervals with the 30MHz imaging riometer (IRIO) at Syowa Station, Antarctica. The data are distributed in the Common Data Format (CDF).
Acknowledgement
We welcome collaborative research that uses the imaging riometer data. Please contact the Principal Investigator, Dr. Hisao Yamagishi (yamagisi [at] uap.nipr.ac.jp), National Institute of Polar Research (NIPR), if you want to use the data.
Contacts
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
Imaging Riometer Observation at Syowa Station
URL
Format
CDF
InstrumentIDs
MeasurementType
Waves
TemporalDescription
TimeSpan
StartDate
1992-02-21 20:00:00
StopDate
2008-01-27 23:59:59
ObservedRegion
Earth.NearSurface.Ionosphere.ERegion
ObservedRegion
Earth.NearSurface.Ionosphere.DRegion
SpatialCoverage
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEO
CenterLatitude
-69.0
NorthernmostLatitude
-68.5
SouthernmostLatitude
-69.5
CenterLongitude
39.58
EasternmostLongitude
41.1
WesternmostLongitude
38.3
Keywords
EARTH SCIENCE Sun-earch Interaction Ionosphere/Magnetosphere Dynamics Aurorae
Parameter #1
Name
Epoch for the cna data
ParameterKey
epoch_1sec
Description
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.
Units
millisecond
Support
Parameter #2
Name
Cosmic Noise Absorption (CNA)
ParameterKey
cna
Description
CNA values at 30 MHz measured with 8x8-element Imaging Riometer.
Cadence
PT1S
Units
decibel (dB)
Structure
Wave
WaveType
Electromagnetic
WaveQuantity
Absorption
FrequencyRange
Low
29.9
High
30.1
Units
MHz
Parameter #3
Name
Quiet-Day Curve (QDC)
ParameterKey
qdc
Description
QDC values derived at 1-min resolution for the 8x8-element Imaging Riometer.
Cadence
PT1M
Units
decibel (dB)
Structure
Wave
WaveType
Electromagnetic
WaveQuantity
Absorption
FrequencyRange
Low
29.9
High
30.1
Units
MHz
Parameter #4
Name
Azimuth angle of each antenna beam
ParameterKey
azimuth_angle
Units
degree
Structure
Support
Parameter #5
Name
Zenith angle of each antenna beam
ParameterKey
zenith_angle
Units
degree
Structure
Support
Parameter #6
Name
Geographic latitude of each antenna beam center at D-region altitude
ParameterKey
glat_beam
Units
degree
Structure
Support
Parameter #7
Name
Geographic longitude of each antenna beam center at D-region altitude
ParameterKey
glon_beam
Units
degree
Structure
Support