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Information - AS1.10 Dynamics and chemistry of atmospheric moist convection
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Event Information |
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The goal of this session is to organize a joint forum for the wide
range of communities concerned with atmospheric convection and its
various aspects: both dynamics and chemistry, especially emphasizing
the importance of cloud physics and radiation. It is intended to bring
together observers, modelers, forecasters, and theoreticians. Moist
convection is the most important weather phenomenon in the tropical
atmosphere and the crucial component in large--scale processes such as
monsoons, Madden--Julian Oscillation, ENSO. Its contribution to
surface rainfall in the mid-latitudes during summer is
significant. Forecasting intense precipitation events strongly hinges
on our understanding of moist convection. Furthermore, the vertical
transport of chemical species by moist convection affects global
atmospheric chemistry. A wide range of contributions will be accepted
not only from those directly dealing with moist convection, but also
from those studying mesoscale processes where convection plays a
significant role, as well as tropical and mid-latitude cyclones,
tropical meteorology, and climate dynamics.
This year's session will be organized with emphasis on three focus
issues:
1) Convection and chemistry processes in the West African monsoon: The
intensive observational period (IOP) of the AMMA project was executed
in the summer 2006, and it is hard to think of a more appropriate
moment for discussing the observations just obtained. Our focus will
be on convection and chemistry, complementing the session by Chris
Taylor.
2) Madden-Julian oscillation (MJO): In spite of advances over years,
MJO still remains a hard animal to simulate properly with GCMs. A main
difficulty no doubt lies in a lack of understanding of convective
processes and their interactions with large-scale dynamics. We gather
recent efforts from modeling, data analyses, and theoretical studies.
3) Global CRM: Considering the difficulties with convective
parameterizations and the availability of increased computer power,
the possibility of integrating a cloud-resolving model (CRM) over a
global domain is becoming an increasingly feasible approach to
understanding complex tropical convective dynamics. What are the
constraints-computational, numerical, and physical-on this approach?
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