NCEI (formerly NGDC)
EMMA logo
Back to Collection NOAA/NESDIS/NGDC/STP/Indices
View Metadata As: Get Data, FAQ, HTML, 19139 XML
Assess Metadata For: Completeness, DOI Readiness, CSW Readiness, Components

Reflection of the Geomagnetic Activity Occurring in the Earth's Northern and Southern Hemisphere (KM, KN, KS Indices)

The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) receives on a monthly basis, the KM, KN, KS indices from Institue De Physique Du Globe, Paris, France. These data are available from 1959 to present. The KN and KS are planetary indices which have been derived using data obtained by northern and southern hemisphere observatories, respectively. KM is mean value and is usually very close in magnitude to KP. These indices reflect the geomagnetic activity occurring in the Earth's northern and southern hemispheres.
Cite this dataset when used as a source.
Online Access
    Distribution Formats
    • ASCII
    Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Dataset Point of Contact Justin Mabie
    Space and Terrestrial Weather Specialist
    DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    (303) 497-6135
    Justin.Mabie@noaa.gov
    Documentation links not available.
    Date(s)
    • publication: 1959-01-01
    Edition: First
    Dataset Progress Status Under development
    Data Update Frequency: Irregular
    Purpose: Geomagnetic Activity Research
    Use Limitations
    • 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.
    Originator(s)
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Publisher(s)
    • 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
    Time Period: 1959-01-01 to Present
    Spatial Bounding Box Coordinates:
    N: 90.000000
    S: -90.000000
    E: 180.000000
    W: -180.000000
    Spatial Coverage Map:
    Theme keywords
    • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Indices
    • Earth Interior & Crust
    • Geomagnetism
    Data Center 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
    Place keywords
    • Global
    • Northern Hemisphere
    • Southern Hemisphere
    Use Constraints
    • Use Constraints: None
    Access Constraints
    • Access Constraints: No Constraints
    Fees
    • Depends on the Data Set None if receiving the data online
    Lineage information for: repository
    Processing Steps
    • 2015-04-22T00:00:00 - 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.
    Last Modified: 2015-09-18
    For questions about the information on this page, please email: Justin.Mabie@noaa.gov