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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG
Location: Earth
Event Time: 2021-12-27T08:38Z ( DSCOVR: PLASMAG )

All Detecting Spacecrafts:

DSCOVR: PLASMAG

ACE: SWEPAM

ACE: MAG

Activity ID: 2021-12-27T08:38:00-IPS-001 (version 3)
Quality of ICME Signature: 2 (clear signatures)
Note: Increase in B total to over 14 nT, accompanied by a sharp increase in ion density to over 35 cm-3 and a jump in speed. This is a combined arrival of a CME and SIR following a HSS. The initial spike in magnetic field, density, and velocity is the combined CME & SIR arrival, followed by the HSS.

Version 1 submitted on 2021-12-27T13:17Z by Anna Chulaki
Version 2 submitted on 2021-12-27T13:21Z by Anna Chulaki
Version 3 submitted on 2021-12-29T17:27Z by Carina Alden

A Notification with ID 20211227-AL-001 was sent on 2021-12-27T13:34Z

All directly linked activities:

2021-12-24T17:09:00-CME-001

2021-12-27T14:40:00-HSS-001

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