Vaata laupäev, 21 detsember 2019 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2019 Dec 21 1230 UTC

SIDC ennustus

Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

	10 cm vool	Ap
21 Dec 2019	071	006
22 Dec 2019	071	007
23 Dec 2019	071	007

Bülletään

Solar X ray flux remained below B level throughout the period. There are no spotted regions on disk and X-ray flux is expected to remain at background levels.

A filament erupted from the far Southern hemisphere this morning (between 6-9UT) but coronagraph data do not (yet) show any associated CME signatures. No Earth-directed CME's were detected in coronagraph images.

A low latitude negative polarity coronal hole started transiting the central meridian at midnight and may cause enhancements of Solar wind conditions starting December 24.

Solar high energy proton fluxes were at background levels and are expected to remain so. The >2MeV electron flux is enhanced (though not over the event threshold) as a consequence of the high speed stream passage and is still expected to rise before starting a gradual recovery.

Solar wind showed a further decaying trend in the wake of the high speed stream. Solar wind speed decreased slowly from around 450 km/s to under 400 km/s. Total magnetic field was in a nominal 4-5nT regime. The magnetic field phi angle was in the positive sector. Solar wind conditions are expected to become and remain nominal in the coming days.

Geomagnetic conditions were quiet (local K Dourbes 1-2 and NOAA Kp 0-2) and this is expected to persist.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 000, põhineb 12 jaamadel.

Päikese indeksid 20 Dec 2019

Catania Wolfi number	000
10cm päikesevoog	070
AK Chambon La Forêt	009
AK Wingst	008
Hinnanguline Ap	006
Hinnanguline rahvusvaheline päikeselaikude arv	000 - Põhineb 14 jaamal

Märkimisväärsete sündmuste kokkuvõte

Andmed on esitanud Päikeseinfektide Andmeanalüüsi Keskus (Solar Influences Data Analysis Center)© - SIDC - Töötleb SpaceWeatherLive

Kõik ajad UTC-s

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