查看星期日, 15 8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 Aug 15 1238 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
15 Aug 2021	073	012
16 Aug 2021	074	010
17 Aug 2021	074	005

公告

Solar flaring activity was at very low levels. NOAA regions 2853 and 2855, magnetic type alpha, are associated with sunspots once more. Newly emerged regions NOAA 2856 (north west, magnetic type beta) and NOAA 2877 (north centre, magnetic type beta) have emerged. Solar activity is expected to remain at low levels.

No Earth directed Coronal Mass Ejections (CMEs) were observed in the available coronagraphic imagery.

The greater than 10 MeV proton flux was at background levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, while the 24h electron fluence was at nominal levels over the past 24 hours. Over the next 24 hours they are expected to remain at those levels.

Over the past 24 hours the solar wind speed slightly increased, reaching 480 km/s. The total magnetic field strength had values between 3 and 8 nT, while its Bz component varied between -8 and 6 nT. The interplanetary magnetic field phi angle was predominantly on the positive sector (directed away from the Sun). Over the next 24 hours, solar wind conditions are expected to continue in this pattern.

Geomagnetic conditions were at quiet to unsettled levels (NOAA Kp 1-3 and K Dourbes 0-3) over the past 24 hours. Quiet to unsettled conditions are expected over the next 24 hours.

今日估計的國際太陽黑子數（ISN）：023，基於22個觀測站。

太陽活動指數 14 Aug 2021

卡塔尼亞沃爾夫數	///
10厘米太陽通量	073
AK Chambon La Forêt	010
AK Wingst	005
估計地磁Ap指數	004
估計國際太陽黑子數	018 - 基於30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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