Vaata esmaspäev, 30 mai 2011 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 2011 May 30 2200 UTC
Valminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga

Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne

SDF number 150 Välja antud 2200Z kuni 30 May 2011

IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 29-2100Z kuni 30-2100Z

Solar activity was low. Five C-class x-ray events were observed in the past 24 hours. Region 1224 (N20W56) produced a C3 event at 30/0252Z which was accompanied by a faint, but potentially geoeffective, CME seen in STEREO-B COR2 imagery at 30/1209Z with a plane-of-sky speed estimate of 610 km/s. Region 1224 grew slightly and ended the period as a Dso type group with Beta-Gamma magnetic characteristics. Region 1227 (S18E54) was also associated with CME activity. At 30/1101Z, this region produced a C2/Sn flare accompanied by a Type II sweep (1697 km/s) and CME observed in LASCO C2 imagery (estimated speed 420 km/s). Earlier in the period, Region 1227 produced a C8/Sf that peaked at 29/2120Z. GOES-15 x-ray signatures indicated this event began at 29/2011Z with northward surging evident by 29/2035Z. At 29/2124Z, LASCO C2 imagery observed a potentially geoeffective CME with an estimated plane-of-sky velocity of 1576 km/s. Associated with this flare were Type II (1548 km/s), Type IV and 10 cm (520 sfu) radio signatures. Region 1227 ended the period as a Dsi type group with Beta-Gamma magnetic characteristics. Region 1226 (S21E42) produced a C3/Sf flare at 30/0549Z and a C7/Sn flare at 30/0605Z. This region ended the period as a Dki type group with Beta-Gamma magnetic characteristics. New Region 1229 (N16E38) was numbered and classified as a Cao type group with Beta magnetic characteristics.
IB. Päikese aktiivsuse ennustus
Solar activity is expected to be low with a chance for M-class events for the next three days (31 May - 02 Jun).
IIA. Summaarne geofüüsikaline aktiivsus 29-2100Z kuni 30-2100Z
The geomagnetic field ranged from quiet to active levels. A coronal hole high speed stream continued to cause disturbed geomagnetic conditions. Some signs of weakening were evident at the ACE spacecraft as solar wind speed decreased from near 700 km/s to about 600 km/s, the total interplanetary magnetic field strength decreased to less than 5 nT and the average Bz component was approximately 0 nT. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels throughout the period.
IIB. Geofüüsikalise aktiivsuse ennustus
The geomagnetic field is expected to be quiet to unsettled on days 1 and 2 (31 May - 1 Jun) as the coronal hole high speed stream wanes. Conditions are expected to remain unsettled with a chance for active periods on day 3 (02 Jun) due to the potential influence from the 29 and 30 May CMEs.
III. Sündmuste tõenäosus 31 Maykuni 02 Jun
Klass M40%40%40%
Klass X05%05%05%
Prooton05%05%05%
PCAFgreen
IV. Pikklaine 10.7 cm kiirgus
  Vaadeldud       30 May 112
  Prognoositud   31 May-02 Jun  115/115/115
  90 päeva keskmine        30 May 108
V. Geomagneetiline A-indeks
  Vaadeldud Afr/Ap 29 May  017/032
  Hinnanguline     Afr/Ap 30 May  007/018
  Prognoositud    Afr/Ap 31 May-02 Jun  010/015-007/010-010/012
VI. Geomagnetilised aktiivsuse tõenäosused 31 May kuni 02 Jun
A. Keskmistel laiuskraadidel
Aktiivne20%05%10%
Väike torm10%01%05%
Suur-tõsine torm05%01%05%
B. Kõrgetel laiuskraadidel
Aktiivne20%05%20%
Väike torm10%01%20%
Suur-tõsine torm05%01%10%

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