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 | Field-aligned irregularity (FAI) observation data of the equatorial ionosphere taken by the EAR (NetCDF format)
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| Timespan [day(s)]: 1, 3, 7 |
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| Description: |
| The field-aligned irregularity (FAI) observation data in the equatorial ionosphere taken by the equatorial atmosphere radar (EAR) at Kototabang, Indonesia (0.20S, 100.32E, 865m MSL). This FAI observation mode covers a wide altitude range from 80 to 600 km in the ionosphere (D-region (below 90 km), E-region (90-150 km), and F-region (above 150 km)). The observation data are stored in the netCDF (network Common Data From) file named (year)(month)(day).(observation parameter).nc. The netCDF file includes the range, height, time, radial Doppler velocity, echo power, spectral width and noise level for each beam number and so on. Details of the observation parameter are described in the EAR-FAI homepage (http://www.rish.kyoto-u.ac.jp/ear/data-fai/index.html). The value of 1.0e+10 means missing data. |
| Acknowledgement: If you acquire EAR data, we ask that you acknowledge us in your use of the data. This may be done by including text such as EAR data provided by Research Institute for Sustainable Humanosphere of Kyoto University. We would also appreciate receiving a copy of the relevant publications. |
| ReleaseDate: 2022-04-02T00:00:00 |
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Contact
(PrincipalInvestigator):
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| Mamoru Yamamoto, Research Institute for Sustainable Humanosphere (RISH), Kyoto University, yamamoto(at)rish.kyoto-u.ac.jp |
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Contact
(GeneralContact):
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| EAR Management Group, Research Institute for Sustainable Humanosphere (RISH), Kyoto University, ear(at)rish.kyoto-u.ac.jp |
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Contact
(DataProducer):
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| Noriko Hashiguchi, Research Institute for Sustainable Humanosphere (RISH), Kyoto University, nhashi(at)rish.kyoto-u.ac.jp |
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Contact
(MetadataContact):
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| RISH Metadata Management Group, Research Institute for Sustainable Humanosphere (RISH), Kyoto University, iugonet(at)rish.kyoto-u.ac.jp |
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| AccessInformation: |
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URL: http://www.rish.kyoto-u.ac.jp/ear/data-fai/index.html |
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Availability: Online |
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Access
Rights: Open |
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Format: NetCDF |
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| Measurement
Type: Profile |
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| Time
Span: |
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StartDate: 2001-07-30T10:13:00 |
| StopDate: -P1Y |
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| Observed
Region: Earth.NearSurface.Ionosphere.DRegion |
| Observed
Region: Earth.NearSurface.Ionosphere.ERegion |
| Observed
Region: Earth.NearSurface.Ionosphere.FRegion |
| Observed
Region: Earth.NearSurface.EquatorialRegion |
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| Keywords: EARTH SCIENCE Sun-earth Interactions Ionosphere/Magnetosphere Dynamics Ion Chemistry/Ionization |
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| Instrument: |
| Name: Equatorial Atmosphere Radar (EAR) |
| Description: Equatorial Atmosphere Radar (EAR) is a large Doppler radar built for atmospheric observation at the equator in West Sumatra, Indonesia (0.20S, 100.32E, 865m MSL). The construction was completed in March 2001, with collaboration between RISH, Kyoto University and the National Institute of Aeronautics and Space of Indonesia (LAPAN) of Indonesia. The EAR has a circular antenna array of approximately 110 m in diameter, which consists of 560 three-element Yagis. It is an active phased array system with each Yagi driven by a solid-state transceiver module. This system configuration makes it possible to direct the antenna beam by electronic control up to 5000 times per second. The EAR transmits an intense radio wave of 47 MHz to the sky and receives extremely weak echoes scattered back by atmospheric turbulence. It can observe winds and turbulence in the altitude range from 2 km to 20 km (troposphere and lower stratosphere). It can also observe echoes from ionospheric irregularities at heights more than 80 km. |
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Contact
(GeneralContact):
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| EAR Management Group, Research Institute for Sustainable Humanosphere (RISH), Kyoto University, ear(at)rish.kyoto-u.ac.jp |
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Contact
(MetadataContact):
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| RISH Metadata Management Group, Research Institute for Sustainable Humanosphere (RISH), Kyoto University, iugonet(at)rish.kyoto-u.ac.jp |
| InstrumentType: Radar |
| InvestigationName: CPEA (Coupling Processes in the Equatorial Atmosphere) |
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| Observatory: |
| Name: Equatorial Atmosphere observatory at Kototabang |
| Description: The Equatorial Atmosphere observatory at Kototabang is located at the equator in West Sumatra, Indonesia (0.20S, 100.32E, 865m MSL). In this site, various kinds of instruments (for example, boundary layer radar (BLR), equatorial atmosphere radar (EAR) and meteor wind (MW) radar) have been installed, which measure the equatorial atmosphere including the troposphere, lower stratosphere, upper mesosphere, thermosphere and ionosphere. |
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Contact
(MetadataContact):
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| RISH Metadata Management Group, Research Institute for Sustainable Humanosphere (RISH), Kyoto University, iugonet(at)rish.kyoto-u.ac.jp |
| Location: |
| ObservatoryRegion: Earth.Surface |
| CoordinateSystemName: WGS84 |
| Latitude: -0.204 |
| Longitude: 100.320 |
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Observed
Data:
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How to Plot (SPEDAS-CUI):
IDL>
THEMIS>
THEMIS>
THEMIS>
thm_init
timespan, ['2025-06-15 00:00:00', '2025-06-22 00:00:00']
iug_load_ear, datatype = ['e_region', 'ef_region', 'f_region', 'v_region']
tplot, ['iug_ear_fai*_snr1']
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How to Plot (SPEDAS-GUI [*Quick-Look was created with this command]):
IDL>
THEMIS>
THEMIS>
THEMIS>
THEMIS>
THEMIS>
THEMIS>
thm_init
timespan, ['2025-06-15 00:00:00', '2025-06-22 00:00:00']
iug_load_ear, datatype = ['e_region', 'ef_region', 'f_region', 'v_region']
ylim, 'iug_ear_fai*_snr1', 0, 0
zlim, 'iug_ear_fai*_snr1', 0, 0
tplot_options, 'region', [0.05, 0, 1, 1]
tplot, ['iug_ear_fai*_snr1']
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How to Plot (SPEDAS-GUI):
Step 1:
Step 2:
Step 3:
Step 4:
Step 5:
Step 6:
Step 7:
Step 8:
Step 9:
Step 10:
Step 11:
Step 12:
Start SPEDAS GUI Program.
Choose [Data] -> [Load Data from Plug-in].
Choose [IUGONET] Tab.
Uncheck 'Use Single Day'.
Set Start Time: '2025-06-15 00:00:00' and Stop Time: '2025-06-22 00:00:00'.
Choose Instrument Type: 'Equatorial_Atmosphere_Radar'.
Choose Data Type: '??_region', Site or parameter(s)-1: '*(all)' and parameter(s)-2: '*'.
Push [->] button. (Please wait a few minutes).
Push [Done] button.
Choose [Plot] -> [Plot Layout Options].
Choose 'iug_ear_fai*_snr1' and push [Spec->] button.
Push [OK] button.
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Original
Metadata Files:
ear_ktb_ionostd_netcdf.xml:
Field-aligned irregularity (FAI) observation data of the equatorial ionosphere taken by the EAR (NetCDF format)
(Observatory)
KTB.xml:
Equatorial Atmosphere observatory at Kototabang
(Instrument)
EAradar.xml:
Equatorial Atmosphere Radar (EAR)
(Person)
Mamoru.Yamamoto.xml:
Mamoru Yamamoto
(Person)
EAR.Management.Group.xml:
EAR Management Group
(Person)
Noriko.Hashiguchi.xml:
Noriko Hashiguchi
(Person)
RISH.Metadata.Management.Group.xml:
RISH Metadata Management Group
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