The Solar-Terrestrial Centre of Excellence (STCE) is a collaborative network of the Belgian Institute for Space Aeronomy, the Royal Observatory of Belgium and the Royal Meteorological Institute of Belgium.
|
Published by the STCE - this issue : 1 Mar 2013. The Solar-Terrestrial Centre of Excellence (STCE) is a collaborative network of the Belgian Institute for Space Aeronomy, the Royal Observatory of Belgium and the Royal Meteorological Institute of Belgium. |
| Archive of the newsletters | Subscribe to this newsletter by mail |
On 18 February, a sunspot group quickly developed to the southeast (bottom left) of NOAA 1671. According to the daily NOAA reports (http://www.swpc.noaa.gov/today.html ), fresh NOAA 1678 already reached its maximum sunspot area on 21 February, being nearly three times as large as the total area of the planet Earth.
This movie (http://www.youtube.com/watch?v=rl-7eFnDCh4 ) and picture underneath show the fast development of the sunspot group. Notice the merge of several sunspots, in particular in the leading portion of the group. Only in the trailing part there was some clustering of spots with opposite magnetic polarity, but they were quite small and resulted only in some small flares, the strongest a C8 on 20 February.
The graphs underneath show the average evolution of the sunspot areas (grey) for each day following the first appearance of the sunspot group (= day 1). As can be seen, such sunspot groups reach their maximum area of about 300MH on day 6-7. The dashed lines indicate margins with respect to this average evolution, as some of the selected sunspot groups reach different maximum areas at different days.
Solar activity was quiet in the beginning of the week, but with the emergence of AR Catania 95 (NOAA 11678) that quickly evolved into a beta-gamma-delta magnetic configuration became more eruptive. On Sunday February 24, this AR started disappearing on the west limb. On Saturday February 23, CACTus detected a partial halo CME directed to the west. The CME came in the field of view of LASCO/C2 at 19:00UT. (check http://sidc.oma.be/cactus/catalog/LASCO/2_5_0/qkl/2013/02/latestCMEs.html - event nr 80). The CME was possibly associated with a C-flare from AR 1678 just behind the west limb. The CME is classified as back-sided.
Geomagnetic activity was mainly quiet on the planetary level. On a local level, the K index reached active levels on February 20 and 22. In situ solar wind data of ACE indicate that the active conditions on February 20 were caused by a sector boundary crossing and a slow solar wind inhomogeneity. On February 22 was no particular solar wind structure like a coronal hole, an ICME or sector boundary crossing visible in the ACE data. It was just an inhomogeneity in the solar wind that was at the base of the local K of 4 on that day.
Solar Activity
Solar (flaring) activity was *low* during the whole week, the biggest flare being a C8.2 on Wednesday, originating from AR 11678.
In order to view the activity of this week in more detail, we suggest to go to the following website from which all the daily (normal and difference) movies can be accessed: http://proba2.oma.be/ssa.
This page also lists the recorded flaring events.
A weekly overview movie can be found here: http://proba2.oma.be/swap/data/mpg/movies/WeeklyReportMovies/WR152/2013_02_18_00_00_31_2013_02_24_22_52_43_SWAP_174__AIA_304-hq.mp4 (SWAP174/AIA304 combination; HelioViewer.org).
Details about some of the events in this movie can be found further below (limited to SWAP imaging).
On Tuesday 19th, the following eruptions were seen by SWAP (difference images):
On Wednesday 20th, prominence eruption on the West limb:
On Friday 22nd, eruption on the NE limb (SWAP difference image and SWAP/AIA304 combination image):
Several additional filament, prominence eruptions occurred during the week, but these were not or hardly visible by SWAP.
The figure shows the time evolution of the Vertical Total Electron Content (VTEC) (in red) during the last week at three locations:
a) in the northern part of Europe(N61°, 5°E)
b) above Brussels(N50.5°, 4.5°E)
c) in the southern part of Europe(N36°, 5°E)
This figure also shows (in grey) the normal ionospheric behaviour expected based on the median VTEC from the 15 previous days.
The VTEC is expressed in TECu (with TECu=10^16 electrons per square meter) and is directly related to the signal propagation delay due to the ionosphere (in figure: delay on GPS L1 frequency).
The Sun's radiation ionizes the Earth's upper atmosphere, the ionosphere, located from about 60km to 1000km above the Earth's surface.The ionization process in the ionosphere produces ions and free electrons. These electrons perturb the propagation of the GNSS (Global Navigation Satellite System) signals by inducing a so-called ionospheric delay.
See http://stce.be/newsletter/GNSS_final.pdf for some more explanations ; for detailed information, see http://gnss.be/ionosphere_tutorial.php
Start : 2013-03-04 - End : 2013-03-06
Geant4 Space Users' Workshop -G4SUW- is focused on new
results on space radiation interaction with components, sensors and
shielding analysis, as well as on Geant4-based tools and
developments applicable to space missions.
The Geant4 particle transport toolkit is jointly developed by a
world-wide collaboration and is intended for a wide range of
applications in HEP, medical field, and space physics and
engineering. In recent years, space and astrophysics has become a
significant user category, with applications ranging from
instrument and detector response verification to space radiation
shielding optimization, component effects, support of scientific
studies, and analysis of biological effects.
Main topics for next G4SUW will include:
* Single Event Effects (SEE) simulation.Geant4-TCAD
coupling.
* Microdosimetry.
* Planetary exploration applications.
* Space electronics and science detectors.
* Simulation of astronaut radiation hazards.
* Interfaces and tools to space environment analysis tools such
as SPENVIS.
* Cosmic ray magnetospheric propagation analysis.
* Large-scale simulations requiring event biasing and/or GRID
capabilities.
* General shielding optimization applications.
Website:
http://www.inta.es/g4suw2013/index.html
Start : 2013-03-19 - End : 2013-03-21
Between 19 and 21 March 2013, ESTEC will host the 19th SPINE
meeting and the final presentations of three activities funded
through ESA's TRP (Technology research Programme), developed
with the SPIS (Spacecraft Plasma Interaction System) software,
followed by training on the SPIS-GEO and AISEPS applications.
During the SPINE meeting on 19th March the intention is to
discuss standards in the area of spacecraft plasma interactions,
ESA's Technology development plans and new results and current
issues in the area of spacecraft plasma interactions. Proposals to
make presentations are welcome.
Final presentations will be made on 20th March for the SPIS-GEO,
SPIS-Science and AISEPS (Assessment of the Interactions between
Spacecraft and Electric Propulsion Systems) studies. A short
training course on the new features of SPIS-GEO will follow. On
21th March there will be a whole-day course on AISEPS.
Website:
http://dev.spis.org/projects/spine/home/meeting/mxix
Start : 2013-03-20 - End : 2013-03-20
The Sun goes through a periodic rise and fall in activity and
solar cycles vary in length from 9 to 14 years. Solar maximum or
solar max is a normal period of greatest solar activity in the
cycle. Recent projections say the next solar max should arrive in
the last half of 2013.
For aviation, disturbed ionosphere currents during geomagnetic
storms can be the cause of considerable communications and
navigation problems. There are measures that can be taken to reduce
the risk of aviation infrastructure failures during geomagnetic
disturbances.
This workshop, jointly organised by EUROCONTROL and the European
Aviation Safety Agency (EASA), is to help aviation, manage the
safety risk, increase awareness of the effects and elaborate on
possible mitigation actions.
Target audience are representatives of airlines, air navigation
service providers (ANSPs), Civil Aviation Authorities (CAAs),
airports, military and original equipment manufacturers (OEMs).
Through bringing together speakers who are premier specialists in
the field from airlines, pilots, ANSPs, research organizations
etc.
The workshop will identify priorities, share knowledge and
encourage cooperation and harmonisation.
Website:
http://www.eurocontrol.int/events/space-weather-workshop
Start : 2013-03-26 - End : 2013-03-29
The first Solar Probe Plus Workshop will take place at the
Beckman Institute auditorium, California Institute of Technology,
Pasadena, from March 26th to 29th, 2013. SPP1 will introduce the
Heliophysics community to the mission and prepare for the exciting
discoveries that the Solar Probe Plus mission will make. The
Workshop will explore the scientific objectives of the Solar Probe
Mission and how the direct exploration of the corona and inner
heliosphere will lead to advances in our understanding of coronal
heating and solar wind acceleration, the magnetic and plasma
structure of the heliosphere, and the acceleration of energetic
particles at shocks and flares. The workshop will inspire research
that will make use of the SPP observations within the context of
the NASA Heliophysics Observatory System and identify key areas for
preparatory research. Synergistic observations from other ground
based and space based assets will also be addressed.
Website:
http://www.solarprobeplus.org/
Start : 2013-04-07 - End : 2013-04-12
The EGU General Assembly 2013 will bring together geoscientists
from all over the world into one meeting covering all disciplines
of the Earth, Planetary and Space Sciences. Especially for young
scientists, it is the aim of the EGU to provide a forum where they
can present their work and discuss their ideas with experts in all
fields of geosciences. The EGU is looking forward to cordially
welcoming you in Vienna.
Website:
http://www.egu2013.eu/home.html
Start : 2013-04-08 - End : 2013-04-12
The most recent solar minimum, solar cycle 23-24 minimum, was
unusually long (266 spotless days in 2008, the most since 1913),
and the magnetic field at the solar poles was approximately 40%
weaker than the last cycle; and unusually complex (the solar wind
was characterized by a warped
heliospheric current sheet, HCS, and fast-wind
streams at low latitudes: the
fast-wind
threads the ecliptic
more commonly in 2008 than 1996.)
This complexity resulted in many effects observed from Sun to
Earth, with many observations indicating unusual conditions on the
Sun, in the heliosphere
, and in the magnetosphere
, ionosphere
, and upper atmosphere of the
Earth.
This remarkable set of conditions provide the scientific
community with an exceptional opportunity to assess the nature and
structure of a very quiet Sun, and an upper atmosphere relatively
devoid of solar influences, helping to provide a better
understanding of the relative roles of solar activity and internal
variability in the dynamics of the Earth's upper atmosphere and
ionosphere
. Such an understanding requires a
multidisciplinary approach.
The main goal of the conference is to bring together the solar,
heliospheric, magnetospheric, upper atmosphere, and ionospheric
communities to debate and discuss interdisciplinary work and reach
a better understanding of the nature and structure of a very quiet
Sun, and of an upper atmosphere relatively devoid of solar
influences, and in doing so, to help clarify the role of solar
activity in the dynamics and variability of the Earth's upper
atmosphere and ionosphere
relative to the internal
variations.
Website:
http://chapman.agu.org/solarminimum/
Start : 2013-04-12 - End : 2013-04-12
Solar flares are impulsive releases of energy in the Sun's
corona and yet it is emission from the lower atmosphere (the
photosphere and chromosphere) that contains the bulk of the energy.
This radiation also provides some of the best diagnostics of the
flaring process. The availability of optical, UV/EUV and hard X-ray
observations, made with the current fleet of space-based (SDO,
Hinode, RHESSI, etc.) and ground-based (ROSA, IBIS, Big Bear, etc.)
observatories, combined with recent developments in flare
modelling, presents a timely opportunity to study the cause and
effect of energy deposition in the lower solar atmosphere. The
combination of multi-wavelength observations with advanced
numerical simulations can provide key insights into the processes
of particle acceleration, plasma heating, energy transport, and
wave propagation.
This Royal Astronomical Society discussion meeting will focus on
work investigating the response of the solar and stellar
atmospheres during a flare's impulsive phase and we welcome
contributions from both observation and theory.
Website:
http://www.astro.gla.ac.uk/?page_id=827
Start : 2013-04-16 - End : 2013-04-19
The 2013 Space Weather Workshop will be held April 16 - 19, in
Boulder, Colorado. This meeting will bring together the customer,
forecaster, vendor, and research communities to focus on the
impacts of space weather, on forecasting techniques, and on recent
scientific advances in predicting conditions in the space
environment.
The program will highlight space weather impacts in several
areas, including ionospheric disturbances, geomagnetic storms and
their solar drivers, radiation belts, and solar energetic
particles. Representatives from industries impacted by space
weather will be invited to attend, including those from commercial
airline, electric power, satellite operations, and
navigation/communication industries.
Website:
http://www.swpc.noaa.gov/sww
Start : 2013-04-22 - End : 2013-04-24
The workshop is being held to discuss and gather community input
on science requirements, capabilities and instrumentation for a
next-generation synoptic network of solar observing instruments. It
is highly probable that such a network should obtain
multi-wavelength data, and the intended targets include space
weather, helioseismology and solar magnetic fields.
Website:
https://www2.hao.ucar.edu/synoptic-network-workshop
Start : 2013-04-28 - End : 2013-05-03
Space weather is a new emerging field of space science focused
on understanding societal and technological impacts of the
solar-terrestrial relations. The Sun has tremendous influence on
Earth's space environment, releases energy in the form of
electromagnetic and particle radiation that can damage or destroy
satellite, navigation, communication and power distribution
systems, influence on atmosphere state, magnetosphere and
ionosphere activity. Our workshop IsraSWAPS-2013 will be dedicated
to the origin, evolution and predictability of physical processes
that lead to the space weather hazards. Particular attention will
be devoted to application of plasma physics methodologies and
achievements to space weather problems. The meeting will also focus
on using of plasma understanding as a test bed for astrophysics and
space physics. Contributions in observations, theory, numerical
simulations, and experiment are welcome.
Website:
http://www.tau.ac.il/institutes/advanced/cosmic/Conferences/20013_IsraSWAPS/SWAPS-2013.htm
Start : 2013-05-06 - End : 2013-05-08
The 5th EISCAT_3D User Meeting is intended to focus on data
analysis and management, while on Tuesday and Wednesday pre-noon
(May 7-8) all science topics to be studied by EISCAT_3D shall be
covered.
Website:
http://www.space.irfu.se/workshops/EISCAT-3D_User2013/
Start : 2013-05-06 - End : 2013-05-10
In the last 50 years, helioseismology has made significant
contributions to the knowledge of the Sun's interior physics
and has led the way to asteroseismology. We have now reached an era
where more sophisticated questions are being asked to understand
the subtle properties of the Sun and other stars due to the
synoptic and high-resolution observations available from BISON,
GONG and space missions such as SOHO
, SDO, CoRot and Kepler.
On this occasion, a workshop on the theme of '50 years of the
seismology of the Sun and stars' is being organized to reflect the
progress that has been made as well as to focus on future goals. We
plan to bring together helio- and asteroseismologists, theorists
and observers in a journey that will take us from the interior of
the Sun and its magnetism towards the structure of distant stars
and activity cycles.
Website:
http://www.nso.edu/workshops/2013
Start : 2013-05-14 - End : 2013-05-17
Welcome to the Meeting of the Americas, a Joint Assembly that
covers topics in all areas of the geophysical sciences. Join your
colleagues, including Earth and space scientists, educators,
students, and other leaders at the Cancun Center in Cancun, Mexico,
14-17 May 2013 as they connect to present groundbreaking research.
Sandy beaches and turquoise waters together with Mexican
hospitality make this a unique site for another successful Joint
Assembly!
Session 'SH10: Solar eruptions from the photosphere to the
heliosphere' focuses on observational, modeling and theoretical
studies of coronal mass ejections (CMEs) from their formation and
initiation at the Sun to their interaction with the solar wind and
other eruptions in the interplanetary medium. We are particularly
interested in recent advancements on i) the formation or
pre-existence of flux ropes as revealed by numerical simulations
and SDO observations, ii) the rotation, expansion, deflection,
deformation and deceleration of CMEs as they propagate in the
corona and heliosphere as revealed by STEREO, IPS and radio
observations and simulations, and, iii) the understanding and
predicting of CME geo-effectiveness and how it could be improved by
future missions.
Website:
http://moa.agu.org/2013/scientific-program/sessions/sh10/
Start : 2013-05-22 - End : 2013-05-24
The SPENVIS User Workshop will be held at the Royal Library of
Belgium, Belgium's national and scientific library. It is one
of the most important libraries in Europe since its history goes
back to the 15th century. It is located in the heart of Brussels at
walking distance from the Central Railway Station.
The main objective of this event is to bring the SPENVIS users
together to share their experience and to identify their
requirements. The workshop will focus on the current and the
forthcoming Next Generation SPENVIS systems.
Topics include:
* Current and future SPENVIS overview
* Space Radiation Models and their accuracy
* Space Environment Effects (charging, SEE, degradation,
micro-particle impacts)
* Geant4 Tools
* Educational use of SPENVIS
* SPENVIS and other tools
Website:
http://www.spenvis.oma.be/workshop/2013/
Start : 2013-05-29 - End : 2013-06-07
Website:
http://swssuah2013.pbworks.com/w/page/60509553/FrontPage
Start : 2013-06-04 - End : 2013-06-07
Our goal is somewhat different from more familiar conferences
and is designed with the SHINE model in mind. We are inviting very
few speakers who we are asking to give review and introductory
talks for each topic we hope to discuss. Those invited review talks
will be largely non-controversial and focus upon agreed-upon
results. They are also likely to contain challenges for the
participants to explain. Then, the bulk of the time is left
unscheduled and we ask the participants to give short, focused
talks that lead to discussion and debate on the fundamental aspects
of the subject at hand.
We expect that everyone who attends will have ample opportunity
to enter into the debate and we hope to stimulate a lively
discussion of fundamental physics.
We hope you will join us. Bring multiple 5-minute talks that
attempt to make specific points so you can enter into the debate
clearly and propel the discussion forward. No one is expected to be
given a large block of time to speak. The goal is meaningful and
focused debate. Remember, you may not convince everyone, but there
will be many participants who want to understand your point of
view. Our goal is to debate and illuminate, providing inspiration
to all.
Website:
http://www-ssg.sr.unh.edu/mag/Kennebunkport2013/Kennebunkport2013.html
Start : 2013-06-11 - End : 2013-06-15
Space Climate is an interdisciplinary science that deals with
the long-term change in the Sun, and its effects in the heliosphere
and in the near-Earth environment, including the atmosphere and
climate. A special focus will be on studies of the causes,
consequences and implications of the present, unusually low solar
activity since solar cycle 23 that, most likely, indicates the
imminent end of the Modern Grand Maximum of solar activity. Other
topics include solar dynamo, solar irradiance variations, solar
wind, geomagnetic field and activity, cosmic rays and cosmogenic
isotopes, and solar effects on different layers of the atmosphere
and on local and global climate, as well as possible solar effects
on human health and on the development of human cultures.
Website:
http://www.spaceclimate.fi/
Start : 2013-06-17 - End : 2013-06-20
The workshop is to improve the scientific understanding of the
origin and propagation of solar transients, and develop the
prediction capacity of these transients' arrival and potential
impact on the Earth.
This workshop is the activity of the ISEST program in CAWSES-II
/ Task Group 3. The workshop engages coordinated international
activities in observation, theory and modeling, and involves
scientists in both developed and developing countries, and provides
an online platform for educational opportunities for students.
Website:
http://spaceweather.gmu.edu/meetings/ISEST/Home.html
Start : 2013-06-19 - End : 2013-06-19
The SWWT is a forum open to European experts in a variety of
both scientific and application oriented fields relating to space
weather. The SWWT plays an important role in advising ESA in space
weather strategy and acts as a forum for discussion amongst the
European space weather community. The SWWT is responsible for
promoting coordinated European space weather activities at both
national and industry levels. The SWWT seeks to identify and
discuss potential collaborations and/or synergies with other
structures or organisations such as the EC FP7 & COST
programmes and others.
Each year they organise a Plenary Meeting.
Start : 2013-06-20 - End : 2013-06-20
This conference aims at presenting the status of atomic physics,
plasma spectroscopy, and solar physics from space, put in the
perspective of the achievements made with SOHO and the missions
that followed.
In addition, our friend and colleague Alan Gabriel will
celebrate his 80th birthday. In anticipation of this, it will be an
excellent opportunity to celebrate his many (and continuing)
contributions to science in various fields. They range from atomic
physics and plasma spectroscopy (theta-pinch machine) to solar and
space physics - from Skylab, SMM (PI of XRP), Spacelab2, to SOHO
(GOLF, CDS, EIT, SUMER ) - as well as science management, including
RAL (UK), IAS (France), ESA SSWG (and SSAC), NASA/ESA Solar
Orbiter/Sentinels.
Presentations addressing new results in atomic physics, plasma
spectroscopy and solar physics are welcome, along with
reminiscences related to Alan, which are warmly encouraged.
Website:
http://www.ias.u-psud.fr/AHG/
Start : 2013-06-23 - End : 2013-06-29
The 2013 ILWS Science Workshop will take place June 23-29, 2013
in Irkutsk, Russia and will be hosted by the Institute of
Solar-Terrestrial Physics of the Russian Academy of Sciences
Website:
http://en.iszf.irk.ru/ILWS_2013
Start : 2013-06-24 - End : 2013-06-28
Asia Oceania Geosciences Society (AOGS) was established in 2003
to promote geosciences and its application for the benefit of
humanity, specifically in Asia and Oceania and with an overarching
approach to global issues.
Asia- Oceania region is particularly vulnerable to natural
hazards, accounting for almost 80% human lives lost globally. AOGS
is deeply involved in addressing hazard related issues through
improving our understanding of the genesis of hazards through
scientific, social and technical approaches.
AOGS holds annual conventions providing a unique opportunity of
exchanging scientific knowledge and discussion to address important
geo-scientific issues among academia, research institution and
public.
Recognizing the need of global collaboration, AOGS has developed
good co-operation with other international geo-science societies
and unions such as the European Geosciences Union (EGU), American
Geophysical Union (AGU), International Union of Geodesy and
Geophysics (IUGG), Japan Geo-science Union (JpGU), and Science
Council of Asia (SCA).
Website:
http://www.asiaoceania.org/aogs2013/public.asp?page=home.htm
Start : 2013-07-12 - End : 2013-07-19
Applications are invited for the 2013 Heliophysics Summer
School, which will be held in beautiful Boulder, Colorado. We are
seeking students and undergraduate level teachers and instructors
to join us this coming summer for a unique professional experience.
Students and teachers will learn about the exciting science of
heliophysics as a broad, coherent discipline that reaches in space
from the Earth's troposphere to the depths of the Sun, and in
time from the formation of the solar system to the distant future.
At the same time, a goal of the Summer School is for the group of
instructors to develop materials from Heliophysics that can be
applied in their classes.
The Heliophysics Summer School focuses on the physics of space
weather events that start at the Sun and influence atmospheres,
ionospheres and magnetospheres throughout the solar system. The
solar system offers a wide variety of conditions under which the
interaction of bodies with a plasma environment can be studied:
there are planets with and without large-scale magnetic fields and
associated magnetospheres; planetary atmospheres display a variety
of thicknesses and compositions; satellites of the giant planets
reveal how interactions occur with subsonic and sub-Alfvenic flows
whereas the solar wind interacts with supersonic and super-Alfvenic
impacts.
Encompassed under a general title of comparative magnetospheres
are processes occurring on a range of scales from the solar wind
interacting with comets to the interstellar medium interacting with
the heliosphere. The school will address not only the physics of
all these various environments but will also go into the
technologies by which these various environments are being
observed. The program is complemented with considerations of the
societal impacts of space weather that affects satellites near
Earth and elsewhere in the solar system.
The school will be based on lectures, laboratories, and
recitations from world experts, and will draw material from the
three textbooks Heliophysics I-III, published by Cambridge
University Press.
Several teachers along with about 35 students will be selected
through a competitive process organized by the UCAR Visiting
Scientist Programs. The school lasts for eight days, and each
participant receives full travel support for airline tickets,
lodging and per diem costs.
Website:
http://www.vsp.ucar.edu/Heliophysics/
Start : 2013-07-16 - End : 2013-07-25
The Summer School Alpbach enjoys 36 years of tradition in
providing in-depth teaching on different topics of space science
& technology, featuring lectures and concentrated working
sessions on mission studies in self-organised working groups. 60
young highly qualified European science and engineering students
converge annually for stimulating 10 days of work in the Austrian
Alps. 4 teams compete to design a space mission judged by a jury of
experts. Students learn how to approach the design of a satellite
mission and explore new and startling ideas supported by experts.
The Summer School 2013 will focus on Space Weather
.
The purpose of the Summer School is to foster the practical
application of knowledge derived from lectures, to develop
organisational and team-work skills and to encourage creativity.
Teams will compete to design the best project, judged by an
independent jury. The teams themselves are responsible for the
selection of the subject of the project and for the team structure
and working methods.
Website:
http://www.summerschoolalpbach.at/
Start : 2013-07-22 - End : 2013-08-02
The CISM Summer School is intended to give students a
comprehensive immersion in the subject of space weather: what it
is, what it does, and what can be done about it. Space weather is
many things: beautiful when seen through the eyes of a sun-viewing
telescope, fascinating when studied for its alien worlds of
magnetic structures and phenomena, awesome when witnessed as a
solar eruption or auroral storm, and devastating to the users of
services it disrupts. Space weather links the Sun, the Earth, and
the space in between in a branching chain of consequences. Weather
systems on the Sun can spawn interplanetary storms of colossal size
and energy that envelop the whole planet in electrical hurricanes.
Such storms attack high-tech, complex, and expensive technological
systems that provide much of the infrastructure that allows modern
society to function.
Website:
https://www2.hao.ucar.edu/docs/2013-cism-summer-school
Start : 2013-08-16 - End : 2013-08-31
The Local Organising Committee and the Mexico National Committee
of IUGG have the great pleasure to welcome you to the 11th
Scientific Assembly of the International Association of
Geomagnetism and Aeronomy (IAGA) which is held in Mérida
Yucatán, Mexico from 26 to 31 August 2013 with the
motto: "Living on a Magnetic Planet". Our Magnetic Planet
Capricious (Changeable or Unpredictable) Field.
In order to increase the visibility and attractiveness of IAGA
to young researchers, to motivate them to play active role within
IAGA and to create (and enhance) their awareness of IAGA and sense
of belonging to IAGA, the first IAGA Summer School will be
organized just prior the Assembly. The summer school will provide
overview of the activities carried out within all the IAGA
divisions, with subjects from paleomagnetism and magnetic
anisotropy through observatories and geomagnetic field modeling to
ionospheric and aeronomic research. At least 20 young scientists
from all around the world will be invited based on the nominations
from Working Groups and Divisions. Special call and more
information will be published before the end of 2012.
Website: http://iaga2013.org.mx/
Start : 2013-09-09 - End : 2013-09-14
We gain information about the universe through analysis of the
spectra from celestial objects. However, while the intensity
spectrum represents a scalar quantity but electromagnetic radiation
occurs in the form of transverse waves, the polarized spectrum
provides us with a 4-vector, the Stokes vector. The increased
amount of information space opens new windows to the universe, in
particular for the exploration of magnetic fields. It is well
recognized that the magnetic field is a primary agent responsible
for structuring and the source of all variability on intermediate
time scales, which manifests itself in all forms of solar and
stellar activity.
It is therefore not surprising that every year there are many
scientific meetings organized with the objective of studying the
role of magnetic fields in cosmic objects. What is largely missing
in these meetings is however an in-depth investigation of the
fundamental aspects of how magnetic fields can be determined by the
means of spectro-polarimetry, our main gateway to cosmic magnetism.
The primary aim of our series of Workshops is to address these
fundamental aspects, with less emphasis on the morphological and
physical properties of cosmic magnetic fields.
Website: http://spw7.ynao.ac.cn/
Start : 2013-09-16 - End : 2013-09-19
This summer school targets to introduce a generation of young
researchers (advanced master students, PhDs, and junior
postdoctoral researchers) to the diverse aspects of space weather
related research.
It will introduce theoretical approaches to space weather and
its drivers, present modern solar data analysis tools, and cover
state-of-the-art solar and space science simulations. Participants
will learn about forecasting aspects and their quality control for
space weather events, but also experience hands-on training in
scientific proposal writing and receive do-and-don't tips for
scientific presentations.
The scientific program is enriched by a public evening lecture
on the solar influence on our climate, and the lecturers are
invariably expert scientists with international standing.
The school is open to a maximum of 40 participants, and can
benefit from its embedding within two international research
network activities: an Interuniversity Attraction Pole P7/08 CHARM
connecting heliospheric to astrophysical communities with 7 partner
institutes, and a European FP7 Project eHeroes with 15 different
partner institutes. Participation from outside both network
activities is strongly encouraged. Within Belgium, the school links
up expertise from universities (KU Leuven, ULB, Gent University) to
federal research institutes (the Solar-Terrestrial Centre of
Excellence, the Royal Observatory of Belgium and the Belgian
Institute for Space Aeronomy).
Website:
http://stce.be/SpSTraining/
Start : 2013-11-18 - End : 2013-11-22
This International CAWSES-II Symposium hosted by SCOSTEP
(Scientific Committee on Solar-Terrestrial Physics) will provide an
excellent opportunity to discuss the scientific accomplishments of
CAWSES-II and look forward to SCOSTEP's future programs at a moment
toward the end of its five-year period. The symposium will cover
the six major themes of CAWSES-II tasks: 1) What are the solar
influences on the Earth's climate?, 2) How will geospace respond to
an altered climate?, 3) How does short-term solar variability
affect the geospace environment?, 4) What is the geospace response
to variable inputs from the lower atmosphere?, 5) Capacity
Building, 6) Informatics and eScience. The main functions of
CAWSES-II are to help coordinate international activities in
observations, modeling, and applications crucial to achieving this
understanding, to involve scientists in both developed and
developing countries, and to provide educational opportunities for
students of all levels. The symposium offers keynotes/lectures that
will be interesting for all participants every morning and more
specific sessions of presentations in the afternoon. We welcome all
those who are involved and/or interested in CAWSES-II to Nagoya in
the autumn when we will have the pleasure of being surrounded by
beautiful colorful leaves of this season.
Website:
http://www.cawses.org/CAWSES/leaflet_CAWSES-II_120229.pdf
Start : 2013-11-18 - End : 2013-11-22
The 10th Edition of the European Space Weather
Week will take place on 18-22nd
November 2013 in Belgium. The venue will be confirmed early next
year, but mark your calendars now for the 10th Anniversary of this
growing European event.
The ESWW will again adopt the central aim of bringing together
the diverse groups in Europe working on different aspects of Space
Weather
. This includes but isn't
limited to the scientific community, the engineering community,
applications developers, service providers and service end users.
The meeting organisation will again be coordinated by the Belgian
Solar-Terrestrial Centre of Excellence (STCE), ESA
and the Space Weather
Working Team. The local
organisation will be done by the STCE.
Website:
http://www.stce.be/esww10/
Start : 2014-08-02 - End : 2014-08-10
The 40th COSPAR Scientific Assembly will be held in Moscow,
Russia from 2 - 10 August 2014. This Assembly is open to all bona
fide scientists.
Website:
http://www.cospar-assembly.org/
Mass Estimates of Rapidly-moving Prominence Material
We present a new method for estimating the column mass (the mass contained within a pixel) of non-fully ionised hydrogen and helium (H I, He I and He II) using the properties of the bound-free photo-absorption cross section at multiple wavelengths. Until now, such estimates have not been reliable with imaging-only techniques, but the near-simultaneity of the images taken by the Solar Dynamics Observatory Advanced Imaging Assembly means that we can now estimate the opacity due to erupting filament material that passes through a previously unobscured patch of Sun. To test this idea, we use data from the spectacular filament eruption that was seen on 2011 June 07, when visual inspection of the erupting material indicated that the material returning to the Sun’s surface was highly opaque. The best-fit maps column density and filling factor reveal both high hydrogen column densities in the centre of this test blob, in line with the higher end of measurements previously made, and suggest that the filling factor of this material approaches unity. The technique converges quickly and we plan to extend it to measuring both the full filament mass and the mass of non-erupting filaments on the Sun.
http://www.spaceweather.eu/en/repository/show?id=420
Presentation given at the kick-off of Junior College in Leuven on January 8, 2013 - 200 students - and January 10, 2013 - 80 students.
Junior College is an interdisciplinary educational project in Belgium (Flanders), organized by the University of Leuven (KU Leuven). It provides a challenging program to high school students in their last year of high school. The aim is to create a create a first bridge between high school and university and to spark their interest in science.
The lecture fits in the frame of eHEROES, an FP7 project that incorporates a work package 'dissemination'. The STCE is a partner within the eHEROES project.
http://www.spaceweather.eu/en/repository/show?id=421
Presentation given at the kick-off of Junior College in Kortrijk on January 8, 2013 and January 10, 2013, each time for 100 students.
Junior College is an interdisciplinary educational project in Belgium (Flanders), organized by the University of Leuven (KU Leuven). It provides a challenging program to high school students in their last year of high school. The aim is to create a create a first bridge between high school and university and to spark their interest in science.
The lecture fits in the frame of eHEROES, an FP7 project that incorporates a work package 'dissemination'. The STCE is a partner within the eHEROES project.
http://www.spaceweather.eu/en/repository/show?id=422
Knowledge of the background solar wind is an important input for CME propagation studies. Since in-situ measurements of the background solar wind are only available at 1 AU, we have to rely on heliospheric models to derive the distribution of solar wind parameters in IP space and hence, to do space weather forecasting. We test the performance of the solar wind models ENLIL/MAS, ENLIL/WSA (CCMC) and MAS (Predictive Science) by comparing model results with in-situ measurements from ACE and Wind. For the study we chose the years 2005 and 2007 as a time period with low solar activity. We found that the general structure of the background solar wind is well reproduced by the models. The best model results were obtained for the parameter solar wind speed. However, the predicted arrival times of high speed solar wind streams have typical uncertainties of the order of 1 – 1.5 days.
http://www.spaceweather.eu/en/repository/show?id=339
Coronal mass ejections (CMEs) and flares are transient phenomena with huge energy releases originating from the solar corona. They can immensely influence the conditions of the heliosphere and the space weather at Earth. We investigate the evolution of the X1.4 class flare observed on 22 September 2011 that was also connected with a CME and a coronal wave event. From Earth, the event was observed on the solar limb and thus allows measurements of the height of the loops tops and obtaining the height-time curve of the evolving loops. Identifying and tracking loop tops in different wavelengths covering a wide temperature range further allows to derive the cooling rate of flare loops. For the multi-wavelength study, we use SDO/AIA data as well as H-alpha data from the Kanzelhoehe Observatory.
http://www.spaceweather.eu/en/repository/show?id=423
With the SECCHI instrument suite aboard STEREO, coronal mass ejections (CMEs) can be observed from multiple vantage points during their entire propagation all the way from the Sun to 1 AU. The propagation behavior of CMEs in the interplanetary space is mainly influenced by the ambient solar wind flow. CMEs that are faster than the ambient solar wind get decelerated, whereas slower ones are accelerated until the CME speed is finally adjusted to the solar wind speed. On a statistical basis, empirical models taking into account the drag force acting on CMEs, are able to describe the observed kinematical behaviors.
For several well observed events, we aim to do a comparative study showing the kinematical evolution of CMEs derived from remote sensing and in situ data, as well as from empirical models using 2D and 3D input parameters. From this we will be able to obtain the distance regime at which the solar wind drag force is dominating the CME propagation. We present the first steps in the analysis as well as first results.
http://www.spaceweather.eu/en/repository/show?id=424
The background solar wind (SW) characteristic is a key ingredient for the study of CME propagation in interplanetary (IP) space, in particular for the prediction of interplanetary
coronal mass ejection (ICME) arrival time and arrival speed at Earth. Since in-situ measurements of the background solar wind are only available at 1 AU, one has to rely on
heliospheric models and/or empirical relationships to derive the SW distribution in IP space. We tested different empirical and MHD models to predict the SW characteristics at
1 AU, including MAS/MAS, MAS/ENLIL, WSA/ENLIL, and an empirical model based on the size and location of coronal holes (CH) on the Sun. The modeled SW parameters
were compared with in-situ measurements from ACE and Wind at 1 AU for a year of low ICME activity during the last solar minimum.
http://www.spaceweather.eu/en/repository/show?id=425
http://www.spaceweather.eu/en/repository/show?id=426
http://www.spaceweather.eu/en/repository/show?id=427
The STCE Annual Report 2011 is a compilation of the activities done in 2011 within the frame of the STCE.
This report has an obviously different style compared to the previous editions. This is because it is now targeting a more general public. Hence, it presents only a selection of the 2011-activities in easy-to-digest summaries. These summaries emphasize the intense collaboration between the institutes at the Space Pole, as well as with our external partners.
We hope you enjoy this new style report, which features articles on the evolution of the solar activity, the 8th European Space Weather Week, Solar Orbiter, the Heliophysics Event Knowledge database, user applications for the monitoring of the solar radiation and the ionosphere,... just to name a few. Happy reading!
http://www.spaceweather.eu/en/repository/show?id=428