SOHO Daily Meeting Minutes for Wednesday, 12 April 2000 Chaired by: J. Hollis (SOC) Notes by: K. Schenk (EIT) DOY: 103 ANNOUNCEMENTS ------------- * Science Club today at 3:30 local time. Building 26, room G-10. Topic: Wavelet Analysis and Observation of Oscillations in Coronal Loops FOT REPORT ---------- Spacecraft Status: Nominal Spacecraft Anomalies: None Accomplished Activities: VIRGO, RSL, TT_VC2 load Acquire new tracking star, mag = 7.15 Planned Activities: VIRGO, SWAN, CELIAS (2100), TT_VC3_REC load Upcoming Operations: Ground Anomalies: 103/0829 - TM Dropout; JPL Comm big pipe outage from D65 (48 minutes, recoverable) SOLAR STATUS ------------ SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE LOW TO MODERATE. THERE IS A FAIR-TO-GOOD CHANCE FOR CONTINUED M-CLASS FLARES FROM REGION 8948. HOWEVER, THE RECENT DECLINING TREND IN THE REGION WILL LIKELY LEAD TO A GRADUAL REDUCTION IN INTENSITY AND FREQUENCY OF FLARES FROM THIS REGION. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BECOME ACTIVE SOMETIME OVER THE NEXT 24-48 HOURS. A MORE DETAILED ANALYSIS OF YESTERDAY'S CORONAGRAPH DATA SHOWED THAT IN FACT A VERY FAINT HALO CORONAL MASS EJECTION COULD BE ASSOCIATED WITH THE M3 FLARE OF 9 APRIL FROM 8948. WHILE FAR FROM A CERTAINTY, THERE IS A FAIR CHANCE FOR THE CME TO PASS BY EARTH AND ENHANCE ACTIVITY LEVELS SOMETIME DURING THE NEXT 1-2 DAYS. CONDITIONS ARE EXPECTED TO RETURN TO QUIET TO UNSETTLED BY THE THIRD DAY. 04/11 DOY 102 - 04/12 DOY 103 EIT daily On-Line Solar Status and observations: http://umbra.nascom.nasa.gov/eit/plan/log_form20000412.html LASCO C2 reports: 10:54 UT fast jet in SE. 12:30 UT Rising loops events with slow movement, later erupting into large CME event off West limb (backsided). 15:06 UT fast CME, small event. 18:54 UT, large CME event due to M1 flare in NNE. 19:31 CME in SSW. 20:30 UT Large CME in SSW due to filament eruption seen in EIT. 04:54 UT small puff from flare in NE. INSTRUMENT STATUS ----------------- CDS: Nominal. Supporting JOP083 at AR 8948 CDS and the CDS polarity reversal study at the North and South poles today and tomorrow. Tomorrow at 21 UT CDS will do a one-hour lubrication study. UVCS: Nominal. New synoptics program tested and running today and tomorrow. LASCO: Nominal. Observations in C2 and C3 while CME watching. EIT: Nominal. CME Watch, Full resolution 195 Angstrom images at 12-minute cadence. Supported JOP 83 16:30-17:30 in 195 Angstroms at 60-second cadence. MDI: Nominal. Today MDI will support JOP083 with full disk magnetograms and dopplergrams. At 21 UT MDI will switch to high res mode and observe the large sunspot with AR 8951 until 02:00 UT in its high resolution field of view. Then, MDI will switch back to full disk mode and continue its support of JOP083. TRACE: Nominal. JOP083 on AR 8948 today and tomorrow.