SOHO SPWG Minutes - January 1996
12 January 1996, SOHO EAF, GSFC
- Status of JOPs
- New JOPs
- Plans for remainder of commissioning phase
- First month of SOHO science
- PR matters
V. Domingo, B. Fleck, C. Deforest, J. Charra, E. Antonucci, R.
Lallement, J. Kohl, A. Gabriel, M. Huber, D. Michels, F. Portier, D.
Catura, B. Cougrand, J.-P. Delaboudiniere.
Due to unfavourble weather conditions (the project scientist was trapped in
a snowstorm on the beltway) the meeting took place only in the afternoon
starting at 1:30 pm.
- on PIs to provide science plans for remainder of commissioning
phase until HOI. Input to PS before Jan 26.
- on PIs to provide science plans for first month of SOHO science
after HOI (similar to CDS Science Operations Memo #1). Input to
PS before Jan 26.
- on PS to provide draft timeline for first month of SOHO science
before next SPWG meeting.
1. Status of JOPs
B.Fleck presented the status of JOPs as of Jan 11. The left column in the table
below indicates for which experiments exist fairly detailed observing plans,
whereas the input for the experiments listed in the right column is still TBD.
The JOP leaders are requested to contact experiment representatives from
those teams to finalize the JOPs. B.Fleck to remind JOP leaders individually.
OK JOP Title TBD
EIT, MDI, CDS, SUMER 001 Magnetic Flux
CDS, SUMER, UVCS 002 CH Temp EIT, LASCO, GBO
CDS,SUMER,EIT,UVCS,LASCO, 003 CME onset
all (as 003) 004 Erupt. Prom.
SUMER 005 Off-limb comp.
UVCS, CDS, SUMER, MDI 006 Wind from AR LASCO, EIT
UVCS 007 Abundances CELIAS, CDS, SUMER, EIT, LASCO
all (as 003) 008 CME (earth)
SUMER 009 Prominences CDS
SUMER, CDS 012 Limb Prom. UVCS, EIT, LASCO, GBO
SUMER, CDS 013 TR Variability MDI
UVCS, CDS, SUMER, MDI 014 Wind from CH LASCO, EIT
SUMER, CDS 015 High Velocity
SUMER 017 AR Dynamics UVCS, EIT, LASCO, GBO
SUMER, CDS 018 Sunspot Veloc. GBO
SUMER, CDS 020 Nano-Flares (EIT ?)
CDS 021 Abundances SUMER, UVCS
SUMER, CDS 022 Network EIT, MDI, GBO
SUMER, CDS, MDI 023 Bright Points EIT
CEPAC, CELIAS 025 Particle Produc. SUMER, CDS, EIT
CDS 027 Diffuse Corona SUMER, LASCO, UVCS
CDS 028 Streamers SUMER, LASCO, UVCS
SUMER, CDS, GBO 029 Filament Flows
UVCS, CDS, SUMER, MDI 031 Wind from Stream.LASCO, EIT
CDS 032 Off-limb Temp. GBO, (UVCS, LASCO ?)
CDS 033 X-ray Jets SUMER, EIT, Yohkoh
CDS 034 Active Loops Yohkoh, GBO (EIT, UVCS, LASCO ?)
The following three questions were extensively discussed:
JOP 010 (Stellar Co-alignment by Don Michels) will be moved to the
Intercalibration JOPs and become ICAL 008.
- What is the minimum number of co-operating instruments to have a JOP?
-> at least 2, obviously, but two cooperating instruments (say a SUMER/CDS
study) not necessarily make up a JOP.
- What to do with similar JOP proposals?
-> to optimize the science output, the JOP leaders should talk to each
other and see where their JOPs overlap and where they are
complementary; an identical science objective does not necessarily mean
that the JOPs are identical; the actual observing program may well
- When does the role of the JOP leader end?
-> some attendees felt that it should end after the observations are done,
others felt that the role of the JOP leader should continue as coordinator
throughout the data reduction and analysis phase; after some discussion the
present policy as layed out on the "Get Involved" page on the Web was
2. New JOPs
E. Antonucci presented a new JOP to measure Alphen Waves.
B. Fleck presented an e-mail from Don Hassler with three new JOP proposals:
- Polarization studies using SOHO S/C roll
- Wave and Oscillation studies
- Joint observations with MLSO MkIII/H-alpha/He 10830 imager
MCE Huber presented 5 new JOPs, all involving ZIMPOL (Zuerich Imaging
- Network magnetic field structure
(A.Gabriel also expressed his interest in a JOP addressing the height
structure of the network; to be discussed with P.Lemaire to see to what
extent this particular aspect is addressed in JOP022)
- Correlation between upper chromospheric emission and magnetic field
- Explosive events and coronal heating
- Thermal bifurcation
- 3-D structure of coronal features
He also mentioned an Intercalibration JOP to be developed for the HIRES rocket
(to be discussed in detail by the SICWG).
3. Plans for remainder of commissioning phase
Not discussed due to the unfavourable weather conditions. A weekly planning
meeting is scheduled for Monday, January 15, where this will be presented and
discussed in detail.
J.Kohl mentioned plans for coordinated calibration observations of star
38 AQR, starting around Feb 16. Additional DSN time may be needed.
P.Lemaire and J.Raymond to work out precise timing.
There is an action on the PIs to provide science plans for remainder of
commissioning phase until HOI (Action SPWG-1.1). Input to PS before Jan 26.
4. First month of SOHO science
There is an action on the PIs to provide science plans for first month
of SOHO science after HOI (similar to CDS Science Operations Memo #1;
Action SPWG-1.2). Input to PS before Jan 26. PS to integrate these
individual plans and provide draft timeline for first month of SOHO
science before the next SPWG meeting (Action SPWG-1.3).
5. PR matters
V.Domingo announced that ESA and NASA are preparing a brief SOHO press
release, saying that SOHO is well on its trajectory towards L1, that
all the instruments have been successfully switched on and that they are
now being commissioned. Eventually, it will include one or two polished
"first light" images. The press release should be finished by the end
of week 3 and released in week 4.
V.Domingo also presented a draft layout of the SOHO News press
releases, which contains both ESA and NASA logos as well as a box for
It was agreed not to move forward the date of the big SOHO PR event to
mid of April but stick to May 2.
February 8/9 (together with SWT meeting); central topic will
be the first month of SOHO science after HOI
From March on, the SPWG meeting will be held on the 3rd Friday
of each month (rather then the 2nd), to layout the plan
for the following month;
SOHO month = calendar month
i.e.: March meeting will be held on Friday, March 15, to layout
the plan for April 1-30.
Draft agenda for February SPWG Meeting
- Status update
- Boundary conditions for the coming month
- Priorities for the coming month, including JOPs.
- New JOPs
- Agenda for monthly meetings