查看星期五, 21 1月 2022歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2022 Jan 21 1231 UTC

SIDC太陽影響數據分析中心的預報

太陽閃焰

C-class flares expected, (probability >=50%)

地磁

Active conditions expected (A>=20 or K=4)

太陽質子

Quiet

	10公分通量	Ap
21 Jan 2022	099	011
22 Jan 2022	097	010
23 Jan 2022	095	010

公告

There are 5 visible active regions on the solar disk, but none has produced C-class flares or higher in the past 24 hours. NOAA AR 2929 and 2930, that produced most of the activity in the last days, are rotating over the west limb, and the others are reducing in size and complexity. C-class flares can still be expected in the next 24 hours.

No Earth directed CMEs have been observed in the last 24 hours.

The greater than 10 MeV proton flux had exceeded the 10 pfu threshold yesterday, but it’s now back to values below the threshold. The greater than 2 MeV electron flux increased slightly above the 1000 pfu alert threshold and is expected to remain close to the threshold during the next 24 hours. The 24h electron fluence was at moderate levels and is expected to remain so in the next 24 hours.

The solar wind speed at Earth decreased to about 420 km/s, and the interplanetary magnetic field around 4 nT. Slow solar wind conditions are expected for the next 24 hours.

Geomagnetic conditions were quiet (K_Bel 0 - 2 and Kp 1 - 2). The CME from 18 January may arrive to the Earth in the coming 24 hours, increasing geomagnetic conditions to active or even minor storm levels.

今日估計的國際太陽黑子數（ISN）：023，基於18個觀測站。

太陽活動指數 20 Jan 2022

卡塔尼亞沃爾夫數	075
10厘米太陽通量	099
AK Chambon La Forêt	005
AK Wingst	004
估計地磁Ap指數	004
估計國際太陽黑子數	058 - 基於26個觀測站

顯著活動摘要

由太陽影響數據分析中心提供© - SIDC - 由 SpaceWeatherLive處理

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