查看星期六, 27 3月 2021歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2021 Mar 27 1231 UTC

SIDC太陽影響數據分析中心的預報

太陽閃焰

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

地磁

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

太陽質子

Quiet

	10公分通量	Ap
27 Mar 2021	080	015
28 Mar 2021	080	019
29 Mar 2021	078	011

公告

Solar activity was at very low levels in the past 24 hours. NOAA AR 2811 and 2812 produced only B-class flares. Solar activity is expected to remain at low levels.

No Earth directed CMEs were observed in the past 24 hours. A partial halo CME was visible early on March 26, but it was backsided, without consequences for the Earth.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours. The greater than 2 MeV electron flux was mostly below the 1000 pfu threshold in the past 24 hours and is expected to remain so during the next 24 hours. The 24h electron fluence is at normal levels in the last 24 hours and is expected to stay at normal levels for the next 24 hours.

The solar wind speed varied between 420 km/s and 350 km/s in the last 24 hours. The interplanetary magnetic field magnitude varied between 4 nT and 7 nT, while Bz varied between -4 nT and 4 nT in the last 24 hours. The interplanetary magnetic field phi angle had a negative polarity (towards the Sun). The high speed solar wind associated with the coronal hole that crossed central meridian on March 24 is expected today. A transition to fast solar wind is expected in the next 24 hours.

Geomagnetic conditions were mostly quiet (Kp: 1-2 and K Dourbes: 1-3). The arrival of the high speed stream may increase the geomagnetic conditions to mostly active with isolated minor storm periods.

今日估計的國際太陽黑子數（ISN）：011，基於17個觀測站。

太陽活動指數 26 Mar 2021

卡塔尼亞沃爾夫數	024
10厘米太陽通量	080
AK Chambon La Forêt	010
AK Wingst	010
估計地磁Ap指數	011
估計國際太陽黑子數	023 - 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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