Version:2.4.1
NumericalData
ResourceID
spase://CNES/NumericalData/CDPP-AMDA/Indices/Ground_Based/ground-based-aa
ResourceHeader
ResourceName
Indices - Ground Based - aa
AlternateName
aa IAGA-endorsed magnetic activity index
ReleaseDate
2024-10-04 04:08:21Z
Description
Index which purpose is to measure the amplitude of global geomagnetic activity during 3-hour intervals normalized to geomagnetic latitude ±50°. aa was introduced to monitor geomagnetic activity over the longest possible time period.
Acknowledgement
ISGI website at EOST; License: CC BY-NC https://creativecommons.org/licenses/by-nc/4.0/
Contacts
InformationURL
Name
IAGA geomagnetic indices
URL
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA HAPI Server
URL
Style
HAPI
ProductKey
ground-based-aa
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA Web application
URL
Description
Access to Data via CDPP/AMDA Web application.
Format
CSV
Format
VOTable
Format
CDF
Format
PNG
Acknowledgement
Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.
ProviderName
ISGI/UNISTRA
InstrumentIDs
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
1975-01-01 00:00:00Z
StopDate
2024-10-01 21:00:00Z
Cadence
PT3H
ObservedRegion
Earth.NearSurface
Parameter #1
Name
aa
ParameterKey
aa
Units
nT
Field
Parameter #2
Name
Aa
ParameterKey
Aa
Description
Daily Mean of aa
Units
nT
Field