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Observation data in the ionosphere taken by the MU radar (Text format)

ResourceID
spase://IUGONET/NumericalData/RISH/misc/SGK/MUradar/mur_sgk_ionostd_txt

Description
The 1-hour average observation data of ion drift velocities, electron and ion temperatures and echo power in the ionosphere taken by the MU radar at Shigaraki in Shiga Prefecture, Japan (34.86N, 136.11E, 385m MSL), which has been operated in the incoherent scatter observation mode. The data are stored in the text file named (year)(month)(day)_(variable).txt. The variable abbreviations are dv, teti, pwr1, pwr2, pwr3, and pwr4 which mean plasma drift, electron and ion temperatures and echo powers for radar beam 1-5 directions, respectively. The plasma drift data include nine kinds of drift velocity components for eastward and northward/upward directions perpendicular to the magnetic field line, southward/upward direction parallel to the magnetic field line, vertical direction calculated from northward and southward beams, vertical direction calculated from eastward and westward beams, and for beam 1-4 directions, respectively. The azimuth and zenith angles of beam 1, 2, 3, and 4 are (355.0, 20.0), (85.0, 20.0), (175.0, 20.0), and (265.0, 20.0), respectively, in unit of degree. The temperature data include electron and ion temperature, their error values, condition code and signal to noise ratio between 228.5 and 724.6 km. The echo power data show the intensity of electromagnetic wave reflected from the ionosphere between 80 and 1,200 km for radar beam 1-4 directions. The value of -999.0 means missing data. Local time (UT + 09:00) is used for time data. The plasma drift and temperature data are essential for understanding of ionospheric plasma dynamics and chemical reactions of electron and ions in the middle latitude.

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NumericalData

ResourceID
spase://IUGONET/NumericalData/RISH/misc/SGK/MUradar/mur_sgk_ionostd_txt
ResourceHeader
ResourceName
Observation data in the ionosphere taken by the MU radar (Text format)
ReleaseDate
2016-11-17 23:03:00
Description
The 1-hour average observation data of ion drift velocities, electron and ion temperatures and echo power in the ionosphere taken by the MU radar at Shigaraki in Shiga Prefecture, Japan (34.86N, 136.11E, 385m MSL), which has been operated in the incoherent scatter observation mode. The data are stored in the text file named (year)(month)(day)_(variable).txt. The variable abbreviations are dv, teti, pwr1, pwr2, pwr3, and pwr4 which mean plasma drift, electron and ion temperatures and echo powers for radar beam 1-5 directions, respectively. The plasma drift data include nine kinds of drift velocity components for eastward and northward/upward directions perpendicular to the magnetic field line, southward/upward direction parallel to the magnetic field line, vertical direction calculated from northward and southward beams, vertical direction calculated from eastward and westward beams, and for beam 1-4 directions, respectively. The azimuth and zenith angles of beam 1, 2, 3, and 4 are (355.0, 20.0), (85.0, 20.0), (175.0, 20.0), and (265.0, 20.0), respectively, in unit of degree. The temperature data include electron and ion temperature, their error values, condition code and signal to noise ratio between 228.5 and 724.6 km. The echo power data show the intensity of electromagnetic wave reflected from the ionosphere between 80 and 1,200 km for radar beam 1-4 directions. The value of -999.0 means missing data. Local time (UT + 09:00) is used for time data. The plasma drift and temperature data are essential for understanding of ionospheric plasma dynamics and chemical reactions of electron and ions in the middle latitude.
Acknowledgement
If you acquire MU radar data, we ask that you acknowledge us in your use of the data. This may be done by including text such as MU radar data provided by Research Institute for Sustainable Humanosphere of Kyoto University. We would also appreciate receiving a copy of the relevant publications.
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator spase://IUGONET/Person/Mamoru.Yamamoto
2. CoInvestigator spase://IUGONET/Person/Yuichi.Otsuka
3. TechnicalContact spase://IUGONET/Person/Noriko.Hashiguchi
4. GeneralContact spase://IUGONET/Person/MU.Radar.Management.Group
5. MetadataContact spase://IUGONET/Person/RISH.Metadata.Management.Group

AccessInformation
RepositoryID
spase://IUGONET/Repository/RISH/RISHDB
Availability
Online
AccessRights
Open
AccessURL
Name
MU Ionospheric Observation
URL
http://www.rish.kyoto-u.ac.jp/radar-group/mu/isdata/
Language
English
Format
Text.ASCII
InstrumentIDs
spase://IUGONET/Instrument/RISH/misc/SGK/MUradar
MeasurementType
Profile
TemporalDescription
TimeSpan
StartDate
1986-07-14 13:20:36
RelativeStopDate
-P7D
Cadence
PT1H
SpectralRange
RadioFrequency
ObservedRegion
Earth.NearSurface.Ionosphere
ObservedRegion
Earth.NearSurface.Ionosphere.ERegion
ObservedRegion
Earth.NearSurface.Ionosphere.FRegion
ObservedRegion
Earth.NearSurface.Ionosphere.Topside
SpatialCoverage
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
WGS84
NorthernmostLatitude
34.856
SouthernmostLatitude
34.856
EasternmostLongitude
136.106
WesternmostLongitude
136.106
MinimumElevation
81.98
MaximumElevation
1231.36
Keywords
EARTH SCIENCE Sun-earth Interactions Ionosphere/Magnetosphere Dynamics Ion Chemistry/Ionization
Parameter #1
Name
year
Description
Year in the form YY where YY = the last two digits of year (00-99).
Support
SupportQuantity
Temporal
Parameter #2
Name
month
Description
Month in the form MM where MM = month of year (01-12).
Support
SupportQuantity
Temporal
Parameter #3
Name
day
Description
Day in the form DD where DD = day of month (01-31).
Support
SupportQuantity
Temporal
Parameter #4
Name
time
Description
Time in the form hh where hh = hour of day (00-23). Local time (UT + 09:00:00) is used for time data.
Units
hour
Support
SupportQuantity
Temporal
Parameter #5
Name
Vperp_e
Description
Ion drift velocity (eastward direction perpendicular to the magnetic field line)
Units
m/s
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Velocity
Parameter #6
Name
Vperp_n
Description
Ion drift velocity (northward/upward direction perpendicular to the magnetic field line)
Units
m/s
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Velocity
Parameter #7
Name
Vpara_u
Description
Ion Drift Velocity (southward/upward direction parallel to the magnetic field line)
Units
m/s
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Velocity
Parameter #8
Name
Vz_ns
Description
Ion Drift Velocity (vertical direction calculated from northward and southward beams)
Units
m/s
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Velocity
Parameter #9
Name
Vz_ew
Description
Ion Drift Velocity (vertical direction calculated from eastward and westward beams)
Units
m/s
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Velocity
Parameter #10
Name
Vd_b1
Description
Ion Drift Velocity for beam 1 direction (azimuth angle:355.0, zenith angle:20.0)
Units
m/s
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Velocity
Parameter #11
Name
Vd_b2
Description
Ion Drift Velocity for beam 2 direction (azimuth angle:85.0, zenith angle:20.0)
Units
m/s
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Velocity
Parameter #12
Name
Vd_b3
Description
Ion Drift Velocity for beam 3 direction (azimuth angle:175.0, zenith angle:20.0)
Units
m/s
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Velocity
Parameter #13
Name
Vd_b4
Description
Ion Drift Velocity for beam 4 direction (azimuth angle:265.0, zenith angle:20.0)
Units
m/s
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Velocity
Parameter #14
Name
Ti
Description
Ion temperature
Units
K
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Temperature
Parameter #15
Name
Te
Description
Electron temperature
Units
K
FillValue
-999.0
Particle
ParticleType
Electron
ParticleQuantity
Temperature
Parameter #16
Name
icon
Description
Condition code (0 is normal. 0, 1 and 4 are available)
Units
1
Support
SupportQuantity
Other
Parameter #17
Name
er_ti
Description
Error of estimate for ion temperature
Units
K
FillValue
-999.0
Particle
ParticleType
Ion
ParticleQuantity
Temperature
Parameter #18
Name
er_te
Description
Error of estimate for electron temperature
Units
K
FillValue
-999.0
Particle
ParticleType
Electron
ParticleQuantity
Temperature
Parameter #19
Name
er_tr
Description
Error of estimate for Tr (= Te/Ti)
Units
1
FillValue
-999.0
Support
SupportQuantity
Other
Parameter #20
Name
snr
Description
Signal to noise ratio
Units
dB
FillValue
-999.0
Wave
WaveType
Electromagnetic
WaveQuantity
Intensity
Parameter #21
Name
pwr1
Description
Echo power for radar beam 1 (azimuth angle:355.0, zenith angle:20.0)
Units
dB
FillValue
-999.0
Wave
WaveType
Electromagnetic
WaveQuantity
Intensity
Parameter #22
Name
pwr2
Description
Echo power for radar beam 2 (azimuth angle:85.0, zenith angle:20.0)
Units
dB
FillValue
-999.0
Wave
WaveType
Electromagnetic
WaveQuantity
Intensity
Parameter #23
Name
pwr3
Description
Echo power for radar beam 3 (azimuth angle:175.0, zenith angle:20.0)
Units
dB
FillValue
-999.0
Wave
WaveType
Electromagnetic
WaveQuantity
Intensity
Parameter #24
Name
pwr4
Description
Echo power for radar beam 4 (azimuth angle:265.0, zenith angle:20.0)
Units
dB
FillValue
-999.0
Wave
WaveType
Electromagnetic
WaveQuantity
Intensity