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ABOVE Level-2 Amplitude and Phase of VLF transmitter signals at Camrose (cmrs)

ResourceID
spase://CSA/NumericalData/GO-ABOVE/VLF/L2/Camrose/PT1M

Description

The Array for Broadband Observations of VLF/ELF Emissions (ABOVE) Level-2 CDF files of Amplitude, Phase and Bearing
at 1 minute resolution for seven VLF transmitters as observed from each station of the ABOVE array. The name of the ABOVE station
is given in the filename and file metadata information. The VLF transmitters observed are:

NDK (LaMoure, North Dakota, 46.37 N, 98.33 W, 25.2 kHz)

NAA (Cutler, Maine, 44.64 N, 67.29 W, 24.0 kHz),

NLK (Seattle, Washington, 48.20 N 121.92 W, 24.8 kHz)

NWC (Exmouth, Western Australia, 21.82 S, 114.16 E, 19.8 kHz)

NPM (Lualualei, Hawaii, 21.42 N, 158.15 W, 21.4 kHz)

NRK (Keflavik, Iceland, 63.85 N, 22.45 W, 37.5 kHz)

WWVB (Fort Collins, Colorado, 40.68 N, 105.05 W, 60 kHz)

GO-ABOVE is a ground‐based array of VLF radio receivers located across Canada and run as a part of the Canadian Space Agency's Geospace Observatory (GO). The ABOVE instruments are situated in two north‐south chains in Alberta and Manitoba, through the region roughly from L = 3 through L = 8. The ABOVE instruments monitor electromagnetic waves in a frequency range from 100 Hz to 75 kHz, covering chorus and hiss emissions as well as U.S. Navy transmitters near 25 kHz. The absolute timing accuracy is 10 ns, from GPS.

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Details

Version:2.4.0

NumericalData

ResourceID
spase://CSA/NumericalData/GO-ABOVE/VLF/L2/Camrose/PT1M
ResourceHeader
ResourceName
ABOVE Level-2 Amplitude and Phase of VLF transmitter signals at Camrose (cmrs)
ReleaseDate
2021-10-05 17:42:52
Description

The Array for Broadband Observations of VLF/ELF Emissions (ABOVE) Level-2 CDF files of Amplitude, Phase and Bearing
at 1 minute resolution for seven VLF transmitters as observed from each station of the ABOVE array. The name of the ABOVE station
is given in the filename and file metadata information. The VLF transmitters observed are:

NDK (LaMoure, North Dakota, 46.37 N, 98.33 W, 25.2 kHz)

NAA (Cutler, Maine, 44.64 N, 67.29 W, 24.0 kHz),

NLK (Seattle, Washington, 48.20 N 121.92 W, 24.8 kHz)

NWC (Exmouth, Western Australia, 21.82 S, 114.16 E, 19.8 kHz)

NPM (Lualualei, Hawaii, 21.42 N, 158.15 W, 21.4 kHz)

NRK (Keflavik, Iceland, 63.85 N, 22.45 W, 37.5 kHz)

WWVB (Fort Collins, Colorado, 40.68 N, 105.05 W, 60 kHz)

GO-ABOVE is a ground‐based array of VLF radio receivers located across Canada and run as a part of the Canadian Space Agency's Geospace Observatory (GO). The ABOVE instruments are situated in two north‐south chains in Alberta and Manitoba, through the region roughly from L = 3 through L = 8. The ABOVE instruments monitor electromagnetic waves in a frequency range from 100 Hz to 75 kHz, covering chorus and hiss emissions as well as U.S. Navy transmitters near 25 kHz. The absolute timing accuracy is 10 ns, from GPS.

Acknowledgement
Please include the following in any publications using this data: Infrastructure funding for ABOVE is provided by the Canada Foundation for Innovation and the province of Alberta. ABOVE data used in this work was collected with the support of the Canadian Space Agency Geospace Observatory (GO Canada) contribution initiative.
Contacts
RolePerson
1.PrincipalInvestigatorspase://SMWG/Person/C.M.Cully
2.MetadataContactspase://SMWG/Person/Leonard.N.Garcia
AccessInformation
RepositoryID
AccessURL
URL
Description

Directory tree to access Level-1 and Level-2 CDF data.

Format
CDF
InstrumentIDs
MeasurementType
Waves.Passive
TemporalDescription
TimeSpan
StartDate
2014-08-13 18:00:00
StopDate
2019-10-01 05:45:00
Cadence
PT1M
SpectralRange
RadioFrequency
ObservedRegion
Earth.NearSurface.Ionosphere
Parameter #1
Name
Epoch
Support
SupportQuantity
Temporal
Parameter #2
Name
Phase observed from ABOVE station to NDK
Description

Phase of VLF transmitter NDK
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #3
Name
Amplitude Observed from ABOVE Station to NDK
Description

Amplitude of VLF transmitter NDK observed at ABOVE station"
Amplitude is calculated separately for North-South and East-West antennas.

Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #4
Name
Bearing Observed From ABOVE Station to NDK
Description

Bearing to VLF transmitter NDK
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #5
Name
Phase observed from ABOVE station to NAA
Description

Phase of VLF transmitter NAA
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #6
Name
Amplitude Observed from ABOVE Station to NAA
Description

Amplitude of VLF transmitter NAA observed at ABOVE station"
Amplitude is calculated separately for North-South and East-West antennas.

Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #7
Name
Bearing Observed From ABOVE Station to NAA
Description

Bearing to VLF transmitter NAA
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #8
Name
Phase observed from ABOVE station to NLK
Description

Phase of VLF transmitter NLK
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #9
Name
Amplitude Observed from ABOVE Station to NLK
Description

Amplitude of VLF transmitter NLK observed at ABOVE station"
Amplitude is calculated separately for North-South and East-West antennas.

Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #10
Name
Bearing Observed From ABOVE Station to NLK
Description

Bearing to VLF transmitter NLK
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #11
Name
Phase observed from ABOVE station to NWC
Description

Phase of VLF transmitter NWC
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #12
Name
Amplitude Observed from ABOVE Station to NWC
Description

Amplitude of VLF transmitter NWC observed at ABOVE station"
Amplitude is calculated separately for North-South and East-West antennas.

Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #13
Name
Bearing Observed From ABOVE Station to NWC
Description

Bearing to VLF transmitter NWC
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #14
Name
Phase observed from ABOVE station to NPM
Description

Phase of VLF transmitter NPM
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #15
Name
Amplitude Observed from ABOVE Station to NPM
Description

Amplitude of VLF transmitter NPM observed at ABOVE station"
Amplitude is calculated separately for North-South and East-West antennas.

Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #16
Name
Bearing Observed From ABOVE Station to NPM
Description

Bearing to VLF transmitter NPM
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #17
Name
Phase observed from ABOVE station to NRK
Description

Phase of VLF transmitter NRK
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #18
Name
Amplitude Observed from ABOVE Station to NRK
Description

Amplitude of VLF transmitter NRK observed at ABOVE station"
Amplitude is calculated separately for North-South and East-West antennas.

Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #19
Name
Bearing Observed From ABOVE Station to NRK
Description

Bearing to VLF transmitter NRK
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #20
Name
Phase observed from ABOVE station to WWVB
Description

Phase of VLF transmitter WWVB
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #21
Name
Amplitude Observed from ABOVE Station to WWVB
Description

Amplitude of VLF transmitter WWVB observed at ABOVE station"
Amplitude is calculated separately for North-South and East-West antennas.

Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #22
Name
Bearing Observed From ABOVE Station to WWVB
Description

Bearing to VLF transmitter WWVB
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic