National Geophysical Data Center (NGDC), NOAA Satellite and Information Service

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

An Index (PC) Aimed at Monitoring the (P)olar (C)ap for Magnetic Activity

PC is an index for magnetic activity in the (P)olar (C)ap. It is based on data from a single nearpole station, and aimed to monitor the polar cap magnetic activity generated by such solar wind parameters as the southward component of the interplanetary magnetic field (IMF), the azimuthal component of the IMF (By), and the solar wind velocity v. The station Thule, located in the village Qaanaaq in Greenland at 86.5 degrees geomagnetic invariant latitude, fulfills the requirement of being close to the magnetic pole in the northern hemisphere. The station Vostok at 83.3 degrees does the same in the southern hemisphere. The PC index is derived independently for these two stations. The PC-index is based on an idea by Troshichev et al. (1979) and developed in papers by Troshichev and Andrezem (1985), ennerstrom et al. (1991). Earlier data for 1975-1982 appear in Troshichev et al. (1991). The data from 1975 to the present are published in Report UAG-103, available from the NOAA National Centers for Environmental Information (formerly National Geophysical Data Center).

Cite this dataset when used as a source.

Search and Download
Distribution Formats
Distributor Distributor information not available
No point of contact available for this dataset
Documentation links not available.
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • publication: 1975-01-01
Edition: First
Dataset Progress Status Under development
Data Update Frequency: Monthly
Purpose: Monitor Geomagnetic Activity Caused by Solar Wind
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.
Time Period: 1975-01-01  to  Present
Spatial Bounding Box Coordinates:
N: 90.000000
S: -90.000000
E: 180.000000
W: -180.000000
Spatial Coverage Map:
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Indices
  • Polar Cap Index
  • solar wind
  • Interplanetary Magnetic Field
  • Azimuthal Component
Data Centers
  • 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
  • North and Central America > Greenland > Qaanaaq
  • Oceania > Kiribati > Line Group > Vostok
  • Magnetosphere
Use Constraints
  • Use Constraints: None
Access Constraints
  • Access Constraints: No Constraints
  • Contact Data Center Contact Data Center
Lineage Statement Lineage statement not available.

Metadata Last Modified: 2015-09-18

For questions about the information on this page, please email: