experimental

Entry: AE index

URI: https://terra-vocabulary.org/ncl/FAIR-Incubator/earthsciencevariables/c_fc6bdad7

AE (type of index: Auroral index horizontal component disturbances; time resolution: 1-hour UTinterval from 1957 to 1965 ; 1-minute UT interval over periods 1966 to 1975, 1978 to June 1988, March 1989 and from 1990 onwards; unit: nT) is computed using 1-minute values from 12 observatories in the Northern auroral zone. AE aims at monitor the magnetic signature of the eastward and westward auroral electrojets in the Northern hemisphere. The magnetograms of the horizontal components from the AE stations are 'superimposed', the upper envelope defines the AU index, and the lower envelope define the AL index; then AE = (AU - AL) and A0 = (AU + AL)/2. AE and related derived geomagnetic indices (such as: AU, AL, A0) are determined by the World Data Center for Geomagnetism, Data Analysis Center for Geomagnetism and Space Magnetism, Kyoto University, Kyoto Japan. AE time series is formally recognised and endorsed since 1969 by International Association of Geomagnetism and Aeronomy (IAGA).

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is a Concept | observable property
changed on 13 Nov 2023 10:22:13.454
submitted byViqui Agazzi
accepted on 29 Sep 2022 15:03:12.143

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date accepted 29 Sep 2022 15:03:12.143
date submitted 29 Sep 2022 14:56:15.919
definition
entity AE index
source graph graph

item class observable property | Concept
label AE index
modified 13 Nov 2023 10:22:13.454
notation c_fc6bdad7
register earthsciencevariables
status status experimental
submitter
account name victoria.agazzi@teledetection.fr
name Viqui Agazzi

type register item
version info 4
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Definition

broader Solid earth
definition AE (type of index: Auroral index horizontal component disturbances; time resolution: 1-hour UTinterval from 1957 to 1965 ; 1-minute UT interval over periods 1966 to 1975, 1978 to June 1988, March 1989 and from 1990 onwards; unit: nT) is computed using 1-minute values from 12 observatories in the Northern auroral zone. AE aims at monitor the magnetic signature of the eastward and westward auroral electrojets in the Northern hemisphere. The magnetograms of the horizontal components from the AE stations are 'superimposed', the upper envelope defines the AU index, and the lower envelope define the AL index; then AE = (AU - AL) and A0 = (AU + AL)/2. AE and related derived geomagnetic indices (such as: AU, AL, A0) are determined by the World Data Center for Geomagnetism, Data Analysis Center for Geomagnetism and Space Magnetism, Kyoto University, Kyoto Japan. AE time series is formally recognised and endorsed since 1969 by International Association of Geomagnetism and Aeronomy (IAGA).
exact match 31f77d6b 72f7 45e6 93be 8ac5fd5dc373 | V0010500
label AE index
pref label AE index
type Concept | observable property