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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2021 Feb 09 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

Quiet conditions (<50% probability of C-class flares)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
09 Feb 2021	073	007
10 Feb 2021	073	006
11 Feb 2021	073	004

Bulletin

Solar activity was at very low levels. There were no numbered sunspots on the solar disc and no significant flares were detected in the last 24 hours. The flaring activity is expected to remain low in the next 24 hours.

No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain so in the next 24 hours. The greater than 2MeV electron flux remained under the 1000 pfu threshold and is expected to remain so in the next 48 hours. The 24h electron fluence was at normal levels and is expected to remain so in the next 48 hours.

Over the past 24 hours the solar wind conditions (ACE and DSCOVR) were enhanced under the ongoing influence of a HSS related to a patchy positive polarity coronal hole. The total magnetic field varied between 2.4 nT an 7.5 nT, while the Bz component oscillated between -7.3 nT and 6.1 nT. The phi angle remained predominantly in the positive sector. The solar wind speed started around 400 km/s and sporadically increased to 518 km/s.

The geomagnetic conditions over the past 24 hours were predominantly quiet with an isolated 3-hour long period of globally and locally unsettled conditions. Quiet to unsettled conditions are expected for the next 24 hours. Isolated active periods remain possible as the influence of the coronal hole HSS wanes.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 004, basierend auf 12 Stationen.

Solarindizes für den 08 Feb 2021

Wolf-Zahl Catania	000
10cm Solarflux	074
AK Chambon La Forêt	///
AK Wingst	///
Geschätzer Ap-Wert	007
Geschätzte internationale Sonnenfleckenzahl	003 - Basierend auf 16 Stationen

Zusammenfassung auffälliger Ereignisse

Zur Verfügung gestellt vom Solar Influences Data Analysis Center© - SIDC - Verarbeitet von SpaceWeatherLive

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