Vaata reede, 28 september 2012 arhiivi
Päikese aktiivsuse aruanne
Igale käesolevas aruandes mainitud päikesepurskele on kohaldatud Kosmose Ilmaennustuskeskuse (SWPC) skaalafaktor. SWPC skaleerimisteguri tõttu on päikesepursked esitatud 42% väiksemana kui samade teadusliku kvaliteediga andmete puhul. Meie arhiveeritud päikesepursete andmetest on skaleerimisstegur eemaldatud, et kajastada tegelikke füüsikalisi ühikuid.
Päikese ja geofüüsikalise aktiivsuse aruanne 2012 Sep 28 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 272 Välja antud 2200Z kuni 28 Sep 2012IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 27-2100Z kuni 28-2100Z Solar activity was at low levels. Region 1577 (N08W41)
produced a long duration C3/1f flare at 27/2357Z. The event began
with a filament eruption located northwest of and adjacent to the
region with a subsequent dual ribbon flare. Associated with this
event was an Earth-directed, asymmetric, full-halo CME first visible
in SOHO LASCO C2 and C3 imagery at 28/0018Z and 28/0030Z,
respectively. The plane-of-sky speed through both fields averaged
1034 km/s with a computed radial velocity of 872 km/s. Little
change was observed for the remainder of the disk and limb. No
other Earth-directed CMEs were observed.
IB. Päikese aktiivsuse ennustus
Solar activity is expected to be at
low levels with a slight chance for M-class activity all three days
of the forecast period (29 - 30 September and 01 October).
IIA. Summaarne geofüüsikaline aktiivsus 27-2100Z kuni 28-2100Z
The geomagnetic field was at quiet levels. ACE satellite
measurements indicated a steady decline in wind velocity from about
400 km/s to near 325 km/s while the Bz component of the
interplanetary magnetic field did not vary much beyond +/- 2 nT.
The greater than 10 MeV proton flux at geosynchronous orbit exceeded
threshold at 28/0300Z, reached a maximum of 28 pfu at 28/0445Z and
decayed below threshold at 28/1040Z. At the time of this report,
flux levels were still elevated at about 5 pfu. This event was
believed to be associated with the C3/1f flare observed late on 27
September.
IIB. Geofüüsikalise aktiivsuse ennustus
Geomagnetic field activity is
expected to be at predominately quiet levels on day one (29
September) and through midday on day two (30 September). By late
on day two, active levels with a chance for minor to major storm
periods are expected due to the arrival of the Earth-directed CME
observed early on 28 September. On day three (01 October),
continued minor to major storm conditions are expected early in the
day, decreasing to mostly quiet to unsettled levels with isolated
active periods as effects from the CME wane.
III. Sündmuste tõenäosus 29 Sepkuni 01 Oct
| Klass M | 10% | 10% | 10% |
| Klass X | 01% | 01% | 01% |
| Prooton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 28 Sep 138 Prognoositud 29 Sep-01 Oct 135/135/130 90 päeva keskmine 28 Sep 125
V. Geomagneetiline A-indeks
Vaadeldud Afr/Ap 27 Sep 003/004 Hinnanguline Afr/Ap 28 Sep 002/003 Prognoositud Afr/Ap 29 Sep-01 Oct 004/005-018/035-018/025
VI. Geomagnetilised aktiivsuse tõenäosused 29 Sep kuni 01 Oct
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 05% | 35% | 35% |
| Väike torm | 01% | 25% | 30% |
| Suur-tõsine torm | 01% | 05% | 05% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 15% | 10% | 10% |
| Väike torm | 15% | 25% | 25% |
| Suur-tõsine torm | 05% | 50% | 65% |
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