The Geomagnetic Kp Index and Derived Indices of Geomagnetic Activity

Autor:	Yosuke Yamazaki, Oliver Bronkalla, Claudia Stolle, Achim Morschhauser, Jürgen Matzka
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	Physics Atmospheric Science Index (economics) Earth's magnetic field 010504 meteorology & atmospheric sciences 0103 physical sciences Geodesy 01 natural sciences 010305 fluids & plasmas 0105 earth and related environmental sciences
Zdroj:	Space Weather
DOI:	10.23689/fidgeo-5176
Popis:	The geomagnetic Kp index is one of the most extensively used indices of geomagnetic activity, both for scientific and operational purposes. This article reviews the properties of the Kp index and provides a reference for users of the Kp index and associated data products as derived and distributed by the GFZ German Research Centre for Geosciences. The near real���time production of the nowcast Kp index is of particular interest for space weather services and here we describe and evaluate its current setup. Key Points: Production and distribution of nowcast and definitive Kp index and derived products. Kp is estimated to have decreased from 1932 to 2020 by one third of a unit due to geomagnetic secular variation. Improved agreement between nowcast and definitive Kp since August 2020.
Databáze:	OpenAIRE
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