gov.noaa.ngdc.stp.indices:G00584 eng; USA utf8 dataset Justin Mabie DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Space and Terrestrial Weather Specialist (303) 497-6135 (303) 497-6513 325 Broadway, Mail Code E/GC4 Boulder CO 80305-3328 USA Justin.Mabie@noaa.gov pointOfContact 2015-09-18 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Auroral Electrojet (AE, AL, AO, AU) - A Global Measure of Auroral Zone Magnetic Activity 1976-01-01 publication First NOAA National Centers for Environmental Information publisher DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce publisher DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce originator Citation URL http://swdcwww.kugi.kyoto-u.ac.jp/aedir/index.html http WDC-C2 KYOTO AE index service Home page for the World Data Center for Geomagnetism with links to the data information Citation URL https://www.ngdc.noaa.gov/geomag http Auroral Electrojet Index (AE) Home page information Upper Atmosphere Geophysics International Standard Serial Numbers (ISSN) 'ISSN 0579-7144 UAG Upper Atmosphere Geophysics' The AE index is derived from geomagnetic variations in the horizontal component observed at selected (10-13) observatories along the auroral zone in the northern hemisphere. To normalize the data a base value for each station is first calculated for each month by averaging all the data from the station on the five international quietest days. This base value is subtracted from each value of one-minute data obtained at the station during that month. Then among the data from all the stations at each given time (UT), the largest and smallest values are selected. The AU and AL indices are respectively defined by the largest and the smallest values so selected. The symbols, AU and AL, derive from the fact that these values form the upper and lower envelopes of the superposed plots of all the data from these stations as functions of UT. The difference, AU minus AL, defines the AE index, and the mean value of the AU and AL, i.e. (AU+AL)/2, defines the AO index. The term "AE indices" is usually used to represent these four indices (AU, AL, AE and AO). The AU and AL indices are intended to express the strongest current intensity of the eastward and westward auroral electrojets, respectively. The AE index represents the overall activity of the electrojets, and the AO index provides a measure of the equivalent zonal current. Geomagnetic Research underDevelopment Justin Mabie DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Space and Terrestrial Weather Specialist (303) 497-6135 (303) 497-6513 325 Broadway, Mail Code E/GC4 Boulder CO 80305-3328 USA Justin.Mabie@noaa.gov pointOfContact asNeeded Earth Science > Solid Earth > Geomagnetism > Geomagnetic Indices Earth Science > Sun-Earth Interactions > Ionosphere/Magnetosphere Dynamics > Aurorae Earth Science > Sun-Earth Interactions > Ionosphere/Magnetosphere Dynamics > Geomagnetic Indices theme NASA/GCMD Earth Science Keywords ICSU-WDS > International Council for Science - World Data System project Global Change Master Directory (GCMD) Project Keywords 2020-01-09 publication 9.1 NASA Goddard Space Flight Center, Earth Science Data and Information System https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information custodian High Latitude Magnetosphere Magnetosphere (Other) place NASA/GCMD Earth Science Keywords DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2020-01-09 publication 9.1 NASA Goddard Space Flight Center, Earth Science Data and Information System https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information custodian While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. otherRestrictions Use Constraints: None otherRestrictions Access Constraints: No Constraints eng; USA geoscientificInformation -180.00 180.00 -90.00 90.00 1957-01-01 ASCII Justin Mabie DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Space and Terrestrial Weather Specialist (303) 497-6135 (303) 497-6513 325 Broadway, Mail Code E/GC4 Boulder CO 80305-3328 USA Justin.Mabie@noaa.gov pointOfContact None Ordering Instructions: Data may be downloaded for no cost ftp://ftp.ngdc.noaa.gov/STP/GEOMAGNETIC_DATA/INDICES/AURORAL_ELECTROJET ftp Geomagnetic Data/Indices/Auroral Electroject ftp site download http://swdcwww.kugi.kyoto-u.ac.jp/aedir/index.html http WDC-C2 KYOTO AE index service Home page for the World Data Center for Geomagnetism with links to the data information ftp://ftp.ngdc.noaa.gov/STP/GEOMAGNETIC_DATA/INDICES/AURORAL_ELECTROJET http://swdcwww.kugi.kyoto-u.ac.jp/aedir/index.html repository NOAA National Centers for Environmental Information NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015. 2015-04-22T00:00:00 annually This metadata was automatically generated from the Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata standard (version FGDC-STD-012-2002) using the 2012-08-08 version of the FGDC RSE to ISO 19115-2 transform. Translated from FGDC 2012-10-10T11:06:47.533-06:00 This record was automatically modified on 2015-09-18 to include references to NCEI where applicable. NOAA National Centers for Environmental Information Metadata Specialist editor Justin Mabie DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Space and Terrestrial Weather Specialist (303) 497-6135 (303) 497-6513 325 Broadway, Mail Code E/GC4 Boulder CO 80305-3328 USA Justin.Mabie@noaa.gov pointOfContact