查看星期四, 19 11月 2020歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2020 Nov 19 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

Quiet (A<20 and K<4)

太陽質子

Quiet

	10公分通量	Ap
19 Nov 2020	077	009
20 Nov 2020	077	014
21 Nov 2020	077	008

公告

Solar activity remained at very low levels. The only active region NOAA 2783 (Hsx/alpha) observed on the solar disk around S23E48 was quiet and did not produce any flaring above B class in the last 24 hours. The solar activity is expected to remain very low with slight changes for a C class flare. No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery. A filament has formed on the solar disk to the west from active region NOAA 2783. Its evolution will be monitored.

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 2 MeV electron flux remained under the 1000 pfu threshold and is expected to remain so. The 24h electron fluence was at nominal levels and is expected to remain so for the next 24 hours.

Solar wind speed remained very slow with fluctuating around 300 km/s (ACE and DSCOVR). The total magnetic field was very weak with a maximal strength of 6.3 nT. The Bz component varied between -4 nT and +3 nT. The phi angle remained predominantly in the positive sector.

Geomagnetic activity was globally quiet with locally unsettled conditions since 9 UT this morning. The geomagnetic activity is expected to remain quiet to unsettled within the next 24 hours and unsettled to active conditions after with the possible arrival of an enhanced solar wind stream related to the positive polarity coronal hole CH 97.

今日估計的國際太陽黑子數（ISN）：010，基於13個觀測站。

太陽活動指數 18 Nov 2020

卡塔尼亞沃爾夫數	012
10厘米太陽通量	077
AK Chambon La Forêt	005
AK Wingst	004
估計地磁Ap指數	002
估計國際太陽黑子數	010 - 基於34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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