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Federal
K Indices of Magnetic Activity Relative to an assumed Quiet-day for each 3-Hour Period
National Oceanic and Atmospheric Administration, Department of Commerce —
The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) receives the K indices on a current basis from approximately 85... -
Federal
GOES Space Environment Monitor (SEM) L0 data from OSPO
National Oceanic and Atmospheric Administration, Department of Commerce —
The Space Environment Monitor (SEM) is a suite of instruments onboard the GOES satellite series. The objective of the SEM package is to measure solar radiation in the... -
Federal
An Index (PC) Aimed at Monitoring the (P)olar (C)ap for Magnetic Activity
National Oceanic and Atmospheric Administration, Department of Commerce —
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... -
Federal
Auroral Electrojet (AE, AL, AO, AU) - A Global Measure of Auroral Zone Magnetic Activity
National Oceanic and Atmospheric Administration, Department of Commerce —
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...