| University of Hannover
Institut für Meteorologie und Klimatologie Herrenhäuserstr. 2 30419 Hannover |
STINHO is the experimental part of the project VERTIKO.
STINHO consists of 3 parts:
Part 1 - Experimental investigations about an inhomogeneous surface
with acoustical and optical methods, to provide near -surface area averaged
values of parameters which are relevant for Part 2 - simulation of the
boundary layer turbulence. In addition to the near-surface experiment and
to provide information on the real boundary layer structure to initialise
the simulations for a large eddy model an airborne turbulence measurement
system (Helipod) is used (Part 3).
Relevant data are area averaged values of the turbulent heat and momentum
flux which are
components of the energy budget variations over a real landscape. The
physical description of the energy balance under turbulent flow conditions
above homogeneous surfaces is possible using one-dimensional models and/or
micrometeorological measuring techniques, which determine the energy exchange
processes considering only the height above the underlying surface. Such
a procedure does not consider the horizontal energy fluxes , which must
exist between different types of the surface. Currently accepted parameterised
relations for the turbulent transport of energy only consider the vertical
direction. Project results will
contribute to an improvement of these parameterisations.
The project achieves a better understanding of the turbulent energy
fluxes inside the atmospheric boundary layer, because these fluxes consist
of horizontal and vertical components especially visible in experiments
and simulations under inhomogeneous flow conditions near a heterogeneous
surface.
Part 2 of the STINHO-project deals with the high resolution simulation
of the near-surface boundary layer above inhomogeneous terrain by means
of a parallelised large eddy simulation model.