This is Part 2 of the Block Lecture 'An Introduction to Global
Atmospheric Modelling'. Part 1 can be found here. Lecturer: Veronika
Eyring Abstract:
Computer Modelling is a powerful tool in
climate science. Global three-dimensional models are used to assess the
anthropogenic impact on the chemical composition of the atmosphere and
on
climate. It is a challenging task to find the balance between detailed
representation of physical and biochemical processes and numerical
efficiency.
The first
part of the lecture focused on simple climate models, GCMs and
CCMs. The
second part of the lecture gives an overview of the main components of
an Earth
System Model (ESM) and explains the underlying basics and the numerical
formulation of the fundamental equations in GCMs. In addition, selected
areas
of current research activities are presented. Topics will include
parameterisations
of subgrid-scale physical processes, numerics, climate feedbacks,
climate sensitivity,
tipping points, components of an ESM (carbon cycle, sea ice, aerosols,
chemistry), stabilization scenarios, CMIP5 simulations, detection and
attribution, as well as model evaluation and international Model
Intercomparison Projects (MIPs). The lecture will be accompanied
by practices
at the computer using simple climate models and GCMs.
1. IPCC AR4
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