From the stratosphere to the ionosphere: coupling, boundary conditions and assumptions
radiation is the main source of input energy to the terrestrial atmosphere and,
as such, it determines the Earth’s radiative balance and climate. There are multiple
evidences showing how variations in the intensity of incident solar radiation
at different wavelengths may affect all the layers of the atmosphere and the
climate on annual, decadal and millennial timescales. Therefore, there is a
strong scientific interest in developing climate models that properly describe
all aspects of the solar forcing by also including the thermosphere and
ionosphere, where solar UV flux and solar wind energy are essentially deposited.
the description of the terrestrial atmosphere from the surface up to the thermosphere
and ionosphere is a very complex problem when dealing with the solar forcing on
the climate. Thanks to numerous new observations and recent progress in our
understanding of how the thermosphere/ionosphere reacts to solar forcing, several
models have recently improved the description of the middle and upper atmosphere.
This workshop aims at comparing current numerical
models for the middle and upper atmospheres and, in the light of the
observations, identifying key issues, lacks and roads for future improvement.
leading specialists in the field will attend this workshop and describe their
approach, present the difficulties, and discuss solutions. The programme will
cover various aspects such as the ion-neutral chemistry, radiative transfer
(linear and non-linear), the dynamic coupling between the stratosphere and the
upper atmosphere, the EUV/UV solar flux (description and variability), its
interaction with the upper atmosphere (heating and ionization), geomagnetic
forcing induced by the solar wind variability and its interaction with the
magnetosphere, energetic particle precipitation in the auroral regions and all
the observations that could help to constrain these elements.
goals of this workshop are to highlight the critical issues in model developments,
discuss the choices that were made and foster collaborations between different
is supported by the French Solar-Terrestrial Programme (PNST) and by COST
Action ES1005 (TOSCA).
PhD students or postdoctoral scientists are welcomed to
apply for a grant to support their travel expenses. Interested applicants
should send to the organizers a one page CV and a title and abstract of their
contribution to this workshop. Deadline to apply for a grant: 31 October 2012.
Registration is requested to attend to
this workshop but there is no fee. The deadline for registration is 15 November
2012 and should be done at
Leblanc (LATMOS/IPSL, firstname.lastname@example.org)
J. Lilensten (IPAG,
T. Dudok De Wit (LPC2E, email@example.com)
S. Bekki (LATMOS/IPSL, Slimane.Bekki@latmos.ipsl.fr)
P. Keckhut (LATMOS/IPSL, Philippe.Keckhut@latmos.ipsl.fr)
A. Hauchecorne (LATMOS/IPSL, firstname.lastname@example.org)
M. Marchand (LATMOS/IPSL, email@example.com)
F. Lefèvre (LATMOS/IPSL, firstname.lastname@example.org)
of the solar radiative input Convener: T. Dudok de Wit
Invited speakers: N. Krivova, G. Cessateur, I. Usoskin 2.Modelling
solar forcing from the surface to the upper atmosphere Conveners: S. Bekki, P. Keckhut, A. Hauchecorne Invited
speakers: S. Melo, A. Seppälä, E. Rozanov, H. Schmidt, F. Forget, A.
Hauchecorne, A. Marchaudon, G. Thuiller, K. Semeniuk 3.Radiative
transfer and chemistry Conveners: M. Marchand, F. Lefèvre
Invited speakers: M. Lopez-Puertas, D. Marsh, M. Sinnhuber, P. Verronen