查看星期一, 15 2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 Feb 15 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
15 Feb 2021	071	005
16 Feb 2021	071	015
17 Feb 2021	071	007

公告

Solar activity was at low levels over the past 24 hours. There was no sunspots on the visible solar disc. The flaring activity was at low levels and it is expected to remain low in the next 24 hours.

No Earth-directed coronal mass ejections (CMEs) was observed in the available coronagraph imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain so in the next 24 hours. The greater than 2MeV electron flux remained under the 1000 pfu threshold and is expected to remain so in the next 24 hours.

Over the past 24 hours the solar wind parameters (ACE and DSCOVR) were returning to nominal values: The solar wind speed decreased from about 405 km/s to the current values around 310 km/s, the total magnetic field was below 5 nT and the Bz component ranged between of -3.0 nT to 2.5 nT. The high speed streams associated to the extension of north pole coronal hole (positive polarity, and facing Earth on February 13) may slightly enhancement the solar wind parameters later in about 12-24 hours.

The geomagnetic conditions over the past 24 hours were quiet. Mostly quiet conditions are expected for the next 24 hours with possible unsettled periods due to the expected slight enhancement of the solar wind parameters tomorrow.

今日估計的國際太陽黑子數（ISN）：000，基於08個觀測站。

太陽活動指數 14 Feb 2021

卡塔尼亞沃爾夫數	///
10厘米太陽通量	071
AK Chambon La Forêt	005
AK Wingst	///
估計地磁Ap指數	004
估計國際太陽黑子數	000 - 基於23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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