地球惑星科学専攻 地球科学輻合部特別講演会
 
講演題名：
A Goddard Multi-Scale Modeling System with Unified Physics
 
講演者：　
Dr. W.-K. Tao
(Laboratory for Atmospheres, NASA/Goddard Space Flight Center
Greenbelt, Maryland)
 
日時: 2010年9月27日(月) 16:00〜17:30
場所: 京都大学理学部1号館5階563号室
 
講演概要：
Numerical cloud resolving models (CRMs), which are based the
non-hydrostatic equations of motion, have been extensively applied to
cloud-scale and mesoscale processes during the past four decades. Recent
GEWEX Cloud System Study (GCSS) model comparison projects have indicated
that CRMs agree with observations in simulating various types of clouds
and cloud systems from different geographic locations. Cloud resolving
models now provide statistical information useful for developing more
realistic physically based parameterizations for climate models and
numerical weather prediction models.  It is also expected that Numerical
Weather Prediction (NWP) and regional scale model can be run in grid
size similar to cloud resolving model through nesting technique.
 
Current and future NASA satellite programs can provide cloud,
precipitation, aerosol and other data at very fine spatial and temporal
scales.  It requires a coupled global circulation model (GCM) and
cloud-scale model (termed a super-parameterization or multi-scale
modeling framework, MMF) to use these satellite data to improve the
understanding of the physical processes that are responsible for the
variation in global and regional climate and hydrological systems. The
use of a GCM will enable global coverage, and the use of a CRM will
allow for better and more sophisticated physical parameterization. NASA
satellite and field campaign can provide initial conditions as well as
validation through utilizing the Earth Satellite simulators.
 
At Goddard, we have developed a multi-scale modeling system with unified
physics.  The modeling system consists a coupled GCM-CRM (or MMF); a
state-of-the-art weather research forecast model (WRF) and a
cloud-resolving model (Goddard Cumulus Ensemble model).  In these
models, the same microphysical schemes (2ICE, several 3ICE), radiation
(including explicitly calculated cloud optical properties), and surface
models are applied. The developments, improvements and applications of
the multi-scale modeling system with unified physics will be presented
in this talk. In addition, model generated high resolution visualization
showing the evolution of the convective system, typhoon and hurricane
will be presented.
 
問い合わせ先：
重 尚一