Environmental Engineering Reference
In-Depth Information
APES - Agricultural Production and Externalities Simulator
Production Enterprises
Pedo Transfer
Functions
CLIMA libraries
Diseases
Abiotic
damages
Weather
reader
Soil reader
Crop
CropML
Tree
Grass
Root
distribution
Field
manager
Light
interception
Water
uptake
APES Engine
APES engines
are MODCOM
applications
Soil
Soil water
Soil N
Soil
erosion
Agro
chemicals
Agro
management
Mass balance
Soil
water2
Soil C-N
Soil
temperature
Fig. 4.2 The APES “coarse” component diagram. Note that there are alternate options for
simulating soil water, soil nitrogen, and crops; also, within each of the components there can be
alternate approaches for simulating processes
Model Components
APES is composed of two main groups of software units: the simulation engine
which uses the modelling framework MODCOM (Hillyer et al. 2003) , and the
model components, which include a cross-component unit to compute mass balance.
Model components can be grouped into agricultural management, soil components,
production enterprise components, and weather.
The description of the models, implemented is available in the help files of
each component (see “Web resources”). Help files are in general divided into two
sections: “models”, which contain the model description, targeted at model users,
and “design and use” which contain component information targeted at develop-
ers. The components on public release also include a code documentation file and
sample applications in a software development kit.
All models use a daily time step for integration and communication across
modules, although calculations can be carried out with a shorter time step within a
component. Each component contains one or more existing models which simulate
the constituent processes. The relevant references are listed in the documentation of
each component. A brief summary description of each component follows; the teams
which have developed each component are detailed (refer to authors' affiliation for
explanation of the acronyms). Components are grouped with reference to Fig. 4.2 .
Search WWH ::




Custom Search