IOPW/Boulder.html 0000664 0002451 0000144 00000011277 13575752406 0015251 0 ustar 00roconnor users 0000546 0000007
Red Lion Inn near Boulder, Colorado, October 21, 1993
Red Lion Inn near Boulder, Colorado, October 21, 1993
Present: Hunten (chair), Belton, de Bergh, de Pater, Goguen, Kostiuk, Miller,
Moreno, Orton, Prangee, Schneider, Spencer, Thomas, Wells.
The group convened at 6:30. The first action was to ratify the new Working
Group chairs, who had been elected at WG meetings during the week. They are:
Old
New
Atmosphere
Orton
Orton
Aurora
Kostiuk
Prange
Lab-Theory
Wells
Wells
Magnetosphere
de Pater
Bolton
Satellites
Goguen
Spencer
Torus
Schneider
Thomas
Thanks were expressed to the retiring chairs, and congratulations to the new
ones.
Hunten then polled those present for agenda items, which were as follows.
Annapolis Publication -- Kostiuk reported that most of the papers will appear
in this month's issue of JGR-Planets and a few laggards in a later issue.
They will be collected into a reprint volume which will be made available to
the community, with extra copies for future distribution. Kostiuk had written
a summary which was not deemed suitable for JGR, and it was agreed that EOS
would be a suitable place to publish it.
Comet-Jupiter Crash -- Hunten reported that he had been asked to serve on
A'Hearn's coordinating committee, which also includes Russell, de Bergh,
McGrath, Beebe, and West. There had been some initial concern that the group
would have too strong an emphasis on the cometary aspect of the event, but it
was agreed that Jupiter in general, and IJW in particular, were adequately
represented.
IJW Advocate -- Nick Schneider has been asked several times to make IJW-
related presentations to the Galileo PSG and to NASA MOWGs. It was suggested
that we might appoint someone specifically to serve such a function. A
related function might be press representation. After considerable
discussion, it was agreed that Hunten would be empowered to make an
appointment, and that other SC members would try to think of suggestions. In
the meantime, it was pointed out that much of this activity could probably be
carried out by the new DPS press officer, Nadine Barlow. Hunten will discuss
this with her.
Ring WG? -- With the inclusion of Saturn in the IJW, there would be some value
in adding another WG. In discussion it was pointed out that rings do not vary
much, and it was agreed for now to include this discipline in the Satellites
WG. Spencer will inquire of the community whether this solution is considered
satisfactory.
Data Archiving -- After discussion, it was agreed that IJW has no interest in
managing an archive. For the comet crash it is likely that some arrangements
will come out of A'Hearn's organization. For other activities the Planetary
Data System is probably the best vehicle.
Post-Galileo Workshop -- Such a workshop would be valuable in early 1997,
about a year after Galileo encounter and five years after the Annapolis
meeting. Having it near superior conjunction will assure minimal competition
from observing programs. It was suggested that the workshop might reasonably
be organized and supported by the Galileo Project, and Belton agreed to pursue
the idea.
Facilitation of Equipment Export/Import -- In the past, there have been
difficulties with sending equipment (e.g. a CCD camera and PC based
controller) to some foreign countries. Orton suggested that IJW might be able
to use its good offices to facilitate this. Without more details about what
the problems actually are in a post-USSR world, or about what IJW might
actually be able to do, the SC took no action.
WG Reports -- Each chair gave a short summary of the highlights from their
meetings during the week.
Adjournment -- The meeting adjourned at approximately 8:40 so that those
present could attend the DPS business meeting.
Many thanks to Nick Schneider for making the arrangements.
We dedicated some times to discuss the future of Io observations.
Key points are
1. Possible contribution of Io observations from Juno mission
2. need for more robust Io observation program from the ground (using AO)
3. A discovery mission concept dedicated to Io is in development Io Volcano Observer (PI. A. McEwen)
4. white paper from the Io community (leader: D. Williams) -> submitted a few weeks ago
Io observations
No dedicated Io observing program was submitted in 2007 - 2009 but Imke and I took advantage of our other observing to observe the satellite. This work (de Pater et al. 2009)was submitted and presented at the EPSC conference in Sep 2009.
Key results:
1. Pillan-2007 (detected from Keck in Aug 2007 by I. de Pater) bright
eruption similar in intensity to Pillan-1997 detected using Galileo scpacraft.
2. Loki-2009 (detected from Keck in July 2009 by I. de Pater, plus additional observations in Aug 16 (Marchis) and Sep 10 (de Pater)). We don't have the photometry ready yet but its brightness in Lp band is larger than 50 GW/sr/um. We detected also a counterpart of the
eruption at shorter wavelength (2 um) which indicates a high temperature volcanism (~1000 K).This is the first time that we detect a high-temperature eruption on Loki, that's why it is visible in sunlit direct imaging in K band.
Lellouch et al 2009 (EPSC) presented the first detected of Io atmosphere at 4 um using CRIRES, a high resolution spectrograph equipped with AO at VLT. Data were collected in July
2008. Pillan-2007 is still active with a brightness higher than Pillan-C9 (F=545 GW/sr). SO2
gas detected in absorption both in reflected and in volcanic emission.
I received reports from M. Wilkinson who monitored decametric radio emission (DAM) from Jupiter since 1984 at 20MHz of a reduced activity in 2009. He mentioned to me "that reduced volcanic activity could give rise to reduced ionospheric conductivity and perhaps reduced mass loading on field lines near Io and a depletion of the electron beams that drive the DAM
emission."
I also have reports from A. Wesley of the presence of an anomalous dark feature appearing
on the southern pole of Io in May 2009. I asked him to send me the images. more soon...
Future work:
Imke de Pater will lead a Gemini proposal to get a snapshot of Io activity in 2010 using multi observations collected in 5 filters with Gemini North AO system, a similar work that was done in Dec 2001 (Marchis et al 2005)
Imke and I submitted several proposals at Keck in imaging. Io is mentioned as a potential target for monitoring.
We are still discussing the possibility of implementing time domain observation at Keck (no success so far). We are trying to find a support from small telescopes equipped with 3-5um camera/bolometers to monitor Io continuously and trigger an ToO at VLT. I initiated such
program in 2005 (at 2um with Lick-3m AO) but we did not get enough Io obervations to trigger
the ToO at VLT.
Jupiter/Saturn Atmosphere Node
Ricardo Huseo, Chair Assisted:
R. Achterberg, K. Baines, N. Barrado-Izagirre, I. de Pater, T. del Rio-Gaztelurrutia, L. Fletcher, P. Fry, H. B. Hammel, R. Hueso, R. Lebeau, F. Marchis, R. Moreno, G. S. Orton, S. Prez-Hoyos, A. Sanchez-Lavega, K. Sayanagi, L. Sromovsky, M. Sussman, P. Yanamandra-Fisher and M. Wong
The Atmospheres Node celebrated a 2hr meeting over the 2009 DPS meeting.
The internal meeting was focused on the recent July 2009 impact on Jupiter. There were several short presentations by G.S. Orton, A. Sanchez-Lavega, L. Fletcher, P. Y-Fisher, F. Marchis, R. Hueso, S. Perez-Hoyos and I. de Pater of the different observations of the impact site in the next days and months after the impact. Coordination of next observing opportunities were discussed.
About half an hour of the meeting was devoted to other general atmospheric topics of Jupiter and Saturn. In particular G.S. Orton discussed the thermal properties and cloud variability in Oval BA befote and after the color change. K. Sayanagi presented details over his study of the Saturn's ribbon on Cassini ISS images. There was a discussion about the next BA-GRS crossing and observing opportunities.
The final part of the meeting was dedicated to coordination of publishing efforts related with the 2009 July impact.
Titan Sub-Discipline, Henry Roe
Our extended group has continued multi-telescope observations of
Titan's methane weather. We have programs at IRTF to use SPeX in a
service mode to grab a quick spectrum on as many nights as possible
and a ToO program at Gemini (both North and South) to obtain snapshot
resolved imaging on numerous nights. We also continue to work to
develop small telescope photometric monitoring sites for filling in
the temporal gaps and helping to trigger large telescope ToO's.
Aurora / Torus / Magnetosphere, John Clarke
The highlight of recent auroral observations of Jupiter and Saturn has
been the publication of numerous results from an HST large observing
program over 2007 / 2008. There are more than a dozen papers to date,
and a special session at Fall 2008 AGU on outer planet aurora had 44
submissions. Much of this work is a combination of Cassini and New
Horizons data sets in comparison with the HST auroral images.
For the outer planet environments, most new results have come from
the continuing analysis of Cassini data at Saturn. A good overview
of Cassini results was presented at the summer 2009 Magnetospheres of
the Outer Planets meeting in Cologne:
There have been continued observations of Uranus and Neptune with Keck, Hubble, and a number
of other ground-based facilities, though a number of proposals have been unsuccessful in
recent cycles/semesters. A steady stream of papers from the Uranus RPX is appearing, as
well as a scattering of Neptune papers. (Glenn Orton adds his group's successful imaging of
the stratosphere of Uranus.)
Laboratory Support, Paul Steffes
Paul Steffes described the Georgia Tech lab measurements webpage
and also discussed the nature of lab measurements web pages maintained as
part of PDS. Chris Russell described the IOPW website he is maintaining
at UCLA. It was noted that there appear to be MANY IOPW websites (some
for subdisciplines), and it was hard to identify which was most recent
and functional. The Georgia Tech webpage is:
http://users.ece.gatech.edu/~psteffes/palpapers/models.html
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The IOPW is coordinated by volunteer discipline working group leaders who are listed below. Oversight is provided by a steering committee presently chaired by Glenn Orton
Subdisciplines
a) Aurora, Magnetosphere and Io Torus Note: In 2006 the IOPW combined the Io Torus, Magnetosphere and Radio Emission, and Aurora Discipline Working Groups into a single working group and divided them in 2012.
Discipline Leader: John T Clarke
Boston University
email: jclarke@bu.edu (Aurora)
Discipline Leader: Paul G Steffes
Electromagnetics and Telecommunications
Georgia Institute of Technology
Atlanta, Georgia 30332
Voice: 404-894-3128
Fax: 404-894-4641
email: paul.steffes@ece.gatech.edu
Discipline Leader: Mark Hofstadter Jet Propulsion Laboratory Pasadena, CA 91109
Voice:818.354.6160
Fax: 818.393.4445
email: mark.d.hofstadter@jpl.nasa.gov http://science.jpl.nasa.gov/people/Hofstadter/
The IOPW Steering Committee
IOPW is overseen by a steering committee consisting of the Chair, Glenn Orton; permanent members:
I. de Pater, D. M. Hunten, C. T.Russell, R. West, Heidi Hammel, Kunio Sayanagi and a number of rotating members with 3 year terms.
Some Accomplishments
Early use of electronic newsletters
Coordination of observations of mutual occultations of Jovian satellites
Monitored rare large scale changes in Jovian atmosphere
Coordinated studies of atmospheric storms on Saturn
Provided alerts and exchanged information on the evolution of hotspots on Io
Assisted with the coordination of the Shoemaker - Levy impact observations
Provided supporting observations for the Galileo probe and orbiter missions
The chairman of the steering committee is Glenn Orton (go@orton.jpl.nasa.gov).
The International Outer Planet Watch is a program for the encouragement and coordination of
the study of temporal variations in the Outer Planets. The IOPW coordinates
24-hour coverage of outer planet phenomena when such coverage is needed. It provides
a mechanism for the rapid sharing of information to the community of scientists
studying the outer planets. The measurements it fosters provide a long term context
for "snapshots" that in situ spacecraft, like Galileo and Cassini, provide. The program is built on the belief that
cooperation achieves more than the random efforts of the same number of
investigators; that much can be accomplished in the ground-based program
especially in concert with a major in situ investigation; and that long term observations
of the outer planets are essential to understanding their behavior. This program was originally founded as the International Jupiter Watch (IJW) to complement the Galileo program. A brief
history of the IJW can be found in Russell
et al. (1990) and in the preface to NASA
SP-494,Time Variable Phenomena in the Jovian System (1989) .
The IOPW is coordinated by volunteer discipline working group leaders who are listed below. Oversight is provided by a steering committee presently chaired by Glenn Orton
Subdisciplines
a) Aurora, Magnetosphere and Io Torus Note: In 2006 the IOPW combined the Io Torus, Magnetosphere and Radio Emission, and Aurora Discipline Working Groups into a single working group and divided them in 2012.
Discipline Leader: John T Clarke
Boston University
email: jclarke@bu.edu (Aurora)
Discipline Leader: Paul G Steffes
Electromagnetics and Telecommunications
Georgia Institute of Technology
Atlanta, Georgia 30332
Voice: 404-894-3128
Fax: 404-894-4641
email: paul.steffes@ece.gatech.edu
Discipline Leader: Mark Hofstadter Jet Propulsion Laboratory Pasadena, CA 91109
Voice:818.354.6160
Fax: 818.393.4445
email: mark.d.hofstadter@jpl.nasa.gov http://science.jpl.nasa.gov/people/Hofstadter/
The IOPW Steering Committee
IOPW is overseen by a steering committee consisting of the Chair, Glenn Orton; permanent members:
I. de Pater, D. M. Hunten, C. T.Russell, R. West, Heidi Hammel and a number of rotating members with 3 year terms.
Some Accomplishments
Early use of electronic newsletters
Coordination of observations of mutual occultations of Jovian satellites
Monitored rare large scale changes in Jovian atmosphere
Coordinated studies of atmospheric storms on Saturn
Provided alerts and exchanged information on the evolution of hotspots on Io
Assisted with the coordination of the Shoemaker - Levy impact observations
Provided supporting observations for the Galileo probe and orbiter missions
The chairman of the steering committee is Glenn Orton (go@orton.jpl.nasa.gov).
International Jupiter Watch
A Program to Study the Time Variability of the Jovian System
The International Jupiter Watch
is a program for the encouragement and coordination of the study of temporal variations in the Jovian system. The IJW coordinates 24-hour coverage of Jovian phenomena when such coverage is needed. It provides a mechanism for the rapid sharing of information to the community of scientists studying Jupiter. The measurements it fosters provide a long term context for the Galileo "snapshot" and they provide information complementary to that of the Galileo mission. The program is built on the belief that cooperation achieves more than the random efforts of the same number of investigators; that much can be accomplished in the ground-based program even in the face of a major in situ investigation; and that long term observations of the Jovian system are essential to understanding its behavior. A brief history of the IJW can be found in Russell et al. (1990) and in the preface to NASA SP-494. Time Variable Phenomena in the Jovian System (1989) . The IJW consists of six discipline working groups concerned with:
IJW is overseen by a steering committee consisting of the founding members: M. Belton, I. de Pater, D. M. Hunten, T. V. Johnson, D. Morrison, C. T. Russell and R. West and a number of rotating members with 3 year terms. At present these members are: T. Asada (Japan); C. de Bergh (France); S. Miller (U.K.); F. Moreno (Spain); B. Ryabov (Ukraine) and N. Thomas (Germany).
Some Accomplishments
Early use of electronic newsletters
Coordination of observations of mutual occultations of Jovian satellites
Monitored rare large scale changes in Jovian atmosphere
Coordinated studies of atmospheric storms on Saturn
Provided alerts and exchanged information on the evolution of hotspots on Io
Assisted with the coordination of the Shoemaker - Levy impact observations
Provided supporting observations for the Galileo probe and orbiter missions
The chairman of the steering committee is D. M. Hunten (dhunten@lpl.arizona.edu).
International Jupiter Watch
A Program to Study the Time Variability of the Jovian System
The International
Jupiter Watch is a program for the encouragement and coordination of
the study of temporal variations in the Jovian system. The IJW coordinates
24-hour coverage of Jovian phenomena when such coverage is needed. It provides
a mechanism for the rapid sharing of information to the community of scientists
studying Jupiter. The measurements it fosters provide a long term context
for the Galileo "snapshot" and they provide information complementary
to that of the Galileo mission. The program is built on the belief that
cooperation achieves more than the random efforts of the same number of
investigators; that much can be accomplished in the ground-based program
even in the face of a major in situ investigation; and that long term observations
of the Jovian system are essential to understanding its behavior. A brief
history of the IJW can be found in Russell
et al. (1990) and in the preface to NASA
SP-494. Time Variable Phenomena in the Jovian System (1989) .
Discipline Leader: Reta Beebe
Astronomy Department
New Mexico State University
P.O. Box 30001, Dept 4500
Las Cruces, NM 88003
Voice: 505-646-1938
Fax: 505-646-1602
email: rbeebe@nmsu.edu
Discipline Leader: Bob Howell
Lowell Observatory
1400 W. Mars Hill Rd.
Flagstaff, AZ 86001
Voice: 520-774-3358 Ext 229
Fax: 520-774-6296
email: spencer@lowell.edu
Discipline Leader: Helmut O. Rucker
Austrian Academy of Science
Schmiedlstrasse 6
8042
Austria
Voice: (+43)-316-4120-600
Fax: (+43)-316-4120-680
email: helmut.rucker@oeaw.ac.at
Discipline Leader: Jack Connerney
Laboratory for Extraterrestrial Physics
NASA Goddard Space Flight Center
Voice: 301-286-8554
Fax: 301-286-3271
email: jec@lepjec.gsfc.nasa.gov
Discipline Leader: Julianne I. Moses
Lunar and Planetary Inst.
Voice: 281-244-2082
Fax: 281-486-2162
email: moses@lpi.usra.edu
The IJW Steering Committee
IJW is overseen by a steering committee consisting of the founding members:
M. Belton, I. de Pater, D. M. Hunten, T. V. Johnson, D. Morrison, C. T.
Russell, R. West, K. Sayanagi, and a number of rotating members with 3 year terms.
At present these members are: T. Asada (Japan); C. de Bergh (France); S.
Miller (U.K.); F. Moreno (Spain); B. Ryabov (Ukraine) and N. Thomas (Germany).
Some Accomplishments
Early use of electronic newsletters
Coordination of observations of mutual occultations of Jovian satellites
Monitored rare large scale changes in Jovian atmosphere
Coordinated studies of atmospheric storms on Saturn
Provided alerts and exchanged information on the evolution of hotspots on Io
Assisted with the coordination of the Shoemaker - Levy impact observations
Provided supporting observations for the Galileo probe and orbiter missions
The chairman of the steering committee is D. M. Hunten (dhunten@lpl.arizona.edu).
IOPW/IOPW_Cambridge.htm 0000764 0002451 0000144 00000021133 13575752406 0016205 0 ustar 00roconnor users 0000546 0000007
Summary of Minutes from the IOPW meeting in Cambridge, UK (Sept
Summary of Minutes
from the IOPW meeting in Cambridge, UK (Sept. 8, 2005)
The meeting was held in the lunch patio of the CambridgeUniversity Law
Library over take-out sandwiches.
Present: Glenn Orton (Chair), Bob West, Imke de Pater and Chris Russell
(permanent members), Heidi Hammel (Uranus/Neptune
discipline chair), Agustin
Sanchez-Lavega (Jupiter/Saturn discipline chair),
Ted. Kostiuk (representing
Jack Connerny, aurora discipline chair).
Not present were: Galopeau (radio
magnetospheres), Steffes (laboratory/theory), Machis (satellites), Roe
(Titan), Oliverson (Io Torus).
After the meeting Roe and Jeff Morgenthaller
(standing in for Oliverson), related that they could
not find where the group
was convening.
Rotating members Nick Thomas and Steve Miller were rotated off after several
years of membership, with recommendations for committee members solicited in
subsequent email for replacement. Rotating member Martin Roos-Serote was
replaced by Kevin Baines, who wandered in at the wrong time and happened in
on the meeting.
Although Galopeaumantained
several email lettes for his discpline
per year,
the committee agreed that the relatively moribund nature of the other
disciplines suggested that radio, torus and auroraldiscliplines be combined.
Orton wold
solicit input from Galopeau but tentatively
select Nick Schneider
to head a re-formed group.
It was noted that Frank Marchis also does regular
newsletters and was a
sufficiently recent appointment to be retained as Io discipline chair.
Steffes earlier has professed that he wasn't sure
what his duties were as discpline lead for laboratory/theory. The committee
pointed out several
deficiencies in current lab/theory/observational-interactive research.
Several members missed the presence of a DPS-proximate workshop with lab and
users getting togehter. It was suggested that Steffes might try to create
such a meeting with help from Pasadena-based spectroscopist
Linda Brown on
a weekend near the next DPS meeting in Pasadena.
Another was the availability
of links to relevant laboratory results which were not available on the
PDS/Atmospheres web site. A third was the inadequacy of current HITRAN
and
possibly GEISA molecular spectroscopic parameters for planetary atmospheric
modeling.
Heidi Hammel reported starting an
multidisciplinary effort to characterize
the atmospheres of Uranus during the next few years around the period of its
equinox. she has the ear of Curt Niebur at NASA HQ and will try to establish
a workshop in the spring of 2006. The hope is to try a little funding loose to
target atmospheric, small-body, ring and astronomical observing. (Chair's
note: this was organized to take place near the next Outer Planet Assessment
Group, OPAG, meeting in Pasadena
on May 2-3).
