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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2021 Aug 10 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
10 Aug 2021	074	011
11 Aug 2021	074	005
12 Aug 2021	074	004

Bulletin

Solar flaring activity was at very low levels. No significant flares have been recorded. Solar activity is expected to remain at very low levels.

No Earth directed Coronal Mass Ejections (CMEs) were observed in the available coronagraphic imagery.

The greater than 10 MeV proton flux was at background levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, while the 24h electron fluence was at nominal levels over the past 24 hours. Over the next 24 hours they may increase slightly.

The solar wind parameters indicate we are possibly under the influence of the anticipated high speed stream associated with the negative polarity coronal hole crossing central meridian Aug 5. Over the past 24 hours the solar wind speed increased up to 450 km/s. The total magnetic field strength had values between 1 and 9 nT, while its Bz component varied between -6 and 7 nT. The interplanetary magnetic field phi angle was predominantly on the negative sector (directed towards the Sun). Over the next 24 hours, solar wind conditions are expected to remain at about these levels.

Geomagnetic conditions were at quiet to unsettled levels (NOAA Kp 0-2 and K Dourbes 0-3) over the past 24 hours. Quiet to unsettled conditions are expected over the next 24 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 24 Stationen.

Solarindizes für den 09 Aug 2021

Wolf-Zahl Catania	012
10cm Solarflux	073
AK Chambon La Forêt	008
AK Wingst	005
Geschätzer Ap-Wert	004
Geschätzte internationale Sonnenfleckenzahl	007 - Basierend auf 33 Stationen

Zusammenfassung auffälliger Ereignisse

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

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