5.1 Real time GLE alert

IZMIRAN, NKUA, Almaty, Kosice, UBERN, Aragats, TAU. Delivery month: 20

Implementation of an automated real time system to generate ALERTs of solar cosmic ray events, so called ground level enhancements (GLE), based on methods developed by NKUA, IZMIRAN, and TAU.

When an increase in the count rates of NMs is detected with a clear evidence for a GLE, the system generates an ALERT signal which e.g is sent out by e-mail. To avoid false ALERTs for solar cosmic ray events, at least three stations in real-time will be used for the analysis. While an intensity increase at an individual station is ambiguous, the simultaneous increase at several stations is a reliable sign of a solar event.

Alternatively or as a complement, the NM data can be combined with measurements of X-rays aboard GOES satellites. In this case data from even only one NM may be useful. The performance of these strategies will have to be tested by using the ALERT program with the real-time database.