SPASE Resource Description

spase://ISWI/DisplayData/GIRO/GRM/PT15M

ResourceName

GIRO Ionogram Plots

ReleaseDate

2019-05-05 12:34:56Z

RevisionHistory

RevisionEvent

ReleaseDate

2023-07-28 13:02:30

Note

Edited Acknowledgement, AccessURL, InformationURL, added Contact, SpatialCoverage and updated SPASE version. LNG

RevisionEvent

ReleaseDate

2024-05-03 00:00:00

Note

Moved GBO to ISWI plus update revisionhistory, SAB

Description

Collection of GIRO ionogram images at University of Massachusetts Lowell, covering selected ionosonde stations and periods of time from 1987-01-01 to current time, including 42 real-time data feeds. Total number of GIRO locations represented is 68 as of February 14, 2012. Access to images is arranged via a webpage containing a browsable data availability table. GIRO ionograms are visualized by plotting images in which received signal strength (color scale) is a function of echo delay (virtual range in vertical scale) and ionosonde frequency (horizontal scale) of the transmitted pulses. Echoes that can be used to derive remote vertical electron-density profiles, appear as discrete traces on ionograms. The ionogram traces are extracted (scaled) using image recognition software to obtain ionogram-derived characteristics of ionospheric plasma. Extracted traces and a table of major ionospheric characteristics are superimposed on the ionogram image

Acknowledgement

Heavy investments of time, effort, expertise, and funds continue to be made to produce, collect, quality control, interpret, and archive ionosonde data. It is therefore important that the data suppliers and Lowell GIRO Data Center (LGDC) are appropriately acknowledged in scientific publications that include analysis of data obtained from LGDC servers. Please read Rules of the Road https://giro.uml.edu/didbase/RulesOfTheRoad.html for license information and refer to Acknowledgements List https://giro.uml.edu/didbase/acknowledgements.htm to use GIRO data per license requirements.

Contacts

	Role	Person
1.	PrincipalInvestigator	spase://SMWG/Person/Bodo.W.Reinisch
2.	DataProducer TechnicalContact	spase://SMWG/Person/Ivan.A.Galkin
3.	MetadataContact	spase://SMWG/Person/Leonard.N.Garcia

InformationURL

Name

GIRO (Global Ionospheric Radio Observatory) Home Page

URL

https://giro.uml.edu

Description

Access to real-time data and software tools

Language

en

Association

AssociationID

spase://SMWG/Observatory/GIRO

AssociationType

ObservedBy

PriorIDs

spase://VWO/DisplayData/GIRO/GRM.PT15M

spase://VSPO/DisplayData/GIRO/GRM/PT15M

RepositoryID

spase://SMWG/Repository/UML/DIDBase

Availability

Online

AccessRights

Open

AccessURL

Name

GIRO DIDBase Ionogram Browser

URL

https://giro.uml.edu/didbase/

Description

Repository of GIRO ionogram images at University of Massachusetts Lowell, containing browsable interface to retrieve individual images.

Language

en

Format

PNG

Encoding

None

DataExtent

Quantity

1500000000

Units

byte

Per

PT15M

Acknowledgement

Heavy investments of time, effort, expertise, and funds continue to be made to produce, collect, quality control, interpret, and archive ionosonde data. It is therefore important that the data suppliers and Lowell GIRO Data Center (LGDC) are appropriately acknowledged in scientific publications that include analysis of data obtained from LGDC servers. Please read Rules of the Road https://giro.uml.edu/didbase/RulesOfTheRoad.html for license information and refer to Acknowledgements List https://giro.uml.edu/didbase/acknowledgements.htm to use GIRO data per license requirements.

Calibrated

Level 2, ionogram data processed for extraction of ionospheric characteristics. All images produced by ShowIonogram servlet from raw and processed data.

spase://SMWG/Instrument/GIRO/Ionosonde

Waves.Active

TimeSpan

StartDate

1987-01-01 00:00:05Z

RelativeStopDate

P 5M

Note

Cadence of ionogram measurements may vary depending on the scheduling requirements at GIRO sites; 15 minutes is nominal cadence

Cadence

PT15M

Exposure

PT1M

RadioFrequency

PT15M

Earth.NearSurface.Ionosphere

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GEO

While 100% of all ionograms are processed automatically (autoscaled) to extract ionospheric characteristics, less than 7% of all processed ionograms are validated manually to ensure quality of interpretation. Autoscaled characteristics are accompanied by Confidence Score ranging from 0 to 100 to indicate quality of autoscaling determined by the autoscaling software itself. Manually interpreted data are provided with confidence score of 100.

Ionogram

Echo

Trace

Electron Density Profile

Ionogram-derived Ionospheric Characteristics

Name

Signal Strength

Description

Received signal strength, expressed as AC Electric Field in dB units relative to digitizer 1.

Cadence

PT15M

Units

dB

Wave

WaveType

PlasmaWaves

Qualifier

Magnitude

Qualifier

Pseudo

WaveQuantity

ACElectricField

FrequencyRange

SpectralRange

RadioFrequency

Low

500

High

30000

Units

kHz

GIRO Ionogram Plots

Details

DisplayData