xxth GENERAL ASSEMBLY OF IUGG VIENNA (AUSTRIA)

IAGA NEWS N0.29
GAM2. 12 Comparisons of the Dynamics of the Arctic and
Antarctic Po1ar Middle Atmosphere
J M Forbes, Dept of Electrical, Computer & Systems
Engineering, Boston University, Boston MA 02215,
USA.
A O'Neill
Primary emphasis will be on comparisons between dynamical
features of the two circulation systems and their causal
mechanisms with submission of papers on plane tary and tidal
wave propagation, gravity wave filtering and breaking,
wave/mean flow interactions, and coupling between atmospheric
regions (including both the troposphere and the lower
thermosphere) .
GAM2.13 Modelling and Observations
Constituents
John A Pyle, Physical
University, Lensfield Road,
J Russell
of Ozone and other Minor
Chemistry Dept, Cambridge
Cambridge CB2 lEP, UK.
Papers are solicited on all aspects of ozone change, globally
and at high latitudes, and on measurements for the study of
the middle atmosphere changes from the ground, aircraft,
balloons or satellites. Multi-dimensional modelling of
dynamics, chemistry and tra snport will be included in the
symposium.
GAM2 . 14 Midd1e Atmosphere Coupling with Global Change
Byron A Boville, NCAR, PO Box 3000, Boulde r
CO 80307, USA
K P Shine
The symposium will address potential interactions between
changes in the surface/troposphe re system and the middle
atmosphere and will provide a forum for presenting results on
the coupling and how it may produce trends in o ne region from
changes originating in another. Changes resulting from ozone
depletion, cloud amounts or properties, and sea i c e extent may
be discussed .
GAM2 .15 Heterogeneous Chemistry and Aerosol Physics: the "New
Chemistry" of the Middle Atmosphere
Richard Turco, 720 El Medio Ave, Pacific Palisades
CA 90295, USA.
S Solomon
The chemical and microphysical properties of particulate
matte r in the middle atmosphere and the e ffects of the
particles will be discussed. Papers are welcomed on
measurements or analyses of aerosol characteristics
composition, chemical activity, size and morpho logy, global
distribution and mode lling studies of formation, evolution,
and effects.
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