From: Solar Influences Data analysis Center
Subject: SIDC Weekly Bulletin
To: undisclosed-recipients:;
:Issued: 2008 Mar 04 1424 UTC
:Product: documentation at http://www.sidc.be/products/bul
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# SIDC Weekly bulletin on Solar and Geomagnetic activity #
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WEEK 374 from 2008 Feb 25
SOLAR ACTIVITY
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Solar activity was extremely low during the whole week.
GEOMAGNETIC ACTIVITY
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Geomagnetic activity was dominated by the influence of a recurrent coronal hole. Effects were observed in two periods. A first moderate geomagnetic activity period was detected late on Feb 27th and early on Feb 28th. A longer period of unsettled and minor storm conditions was then observed later on Feb 28th, at planetary and regional levels (K=5 at Dourbes, Feb 28th 21-24 UT); it ended on March 1st at planetary levels.
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DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2008 Feb 25 000 000 71 002 A0.0 0 0
2008 Feb 26 014 009 71 004 A0.0 0 0
2008 Feb 27 013 008 71 013 A0.0 0 0
2008 Feb 28 000 000 70 026 A0.0 0 0
2008 Feb 29 000 000 70 036 A0.0 0 0
2008 Mar 01 000 000 69 024 A0.0 0 0
2008 Mar 02 /// 000 69 011 A0.0 0 0
# RC : Sunspot index (Wolf Number) from Catania Observatory (Italy)
# EISN : Estimated International Sunspot Number
# 10cm : 10.7 cm radioflux (DRAO, Canada)
# Ak : Ak Index Wingst (Germany)
# BKG : Background GOES X-ray level (NOAA, USA)
# M,X : Number of X-ray flares in M and X class, see below (NOAA, USA)
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NOTICEABLE EVENTS
DAY BEGIN MAX END LOC XRAY OP TENCM TYPE Cat NOAA NOTE
