Kipp & Zonen LAS, Instruction Manual

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and are installed simply by clicking on ‘SETUP.EXE” and following the installation procedure. After
successful installation the user can select between the different algorithms in the
configuration menu
of the EVATION software (see Figure 25).
Important: The use of an incorrect algorithm can lead to processing errors! Therefore
carefully check if the selected algorithm applies to your LAS-BET / LAS-RET system!
Depending on the delivered LAS -system a modified algorithm (on a separate CD) is included.
4.4.3 Getting started
EVATION is a user-friendly software program that allows the user to process
LAS measurements to
surface fluxes of sensible heat and evaporation. Before the data of a LAS -system can be processed to
fluxes, first some configurations have to be set in EVATION. The configuration involves a number of
small steps (see Figure 26). First, a working directory (consists of an input subdirectory, an output
subdirectory and a configuration subdirectory) has to be selected or configured. In case one uses
more than 1
LAS -system, separate working directories have to be selected for each system. Once a
working directory is selected EVATION will create subdirectories labelled “input”, “output”, “config” and
“auxiliary”. Next the configuration of the
LAS -system has to be entered in the EVATION software. This
is done via the configuration window. Here, various parameters have to be set, such as LAS -type,
sensor height (or depth), scintillometer path length, terrain characteristics (e.g. surface roughness),
required algorithm (see section 4.4.2 Installing Modified Algorithms and Figure 25), and configuration
of the output ‘flux’ files. To get familiar with EVATION we recommend first studying the help file before
continuing with EVATION. The help file can be viewed by clicking on
help , and following contents .
Figure 26: EVATION configuration menu.