Geography Reference
In-Depth Information
Fig. 5.5
Schematic diagram of scheme design for three-layer nested WRF model
intermediate level, and it is more tally with the actual situation in China. Since the
dataset has been established and updated since July 1999, all the data needed in
this study can be obtained, e.g., the surface observation data and the remote
sensing data.
5.2.2 Methodology
5.2.2.1 Experiment Design
The WRF model is developed into two versions, one is for business, another one is
for research, and this study adopts the latter one, namely ARW (Advanced
Research WRF), to carry out the relevant simulation. To simulate the energy
distribution of near land surface more accurately, this study applies three-layer
nested structure including D01, D02, and D03, and the area ratio of three layers is
3:2:1. The spatial resolution of output of D03 is set to 1 km (Fig.
5.5
). The air
temperature, sea ice, and soil moisture data required by the model are updated
every day.
The parameterization scheme of physical processes in the WRF model is as
follows. The longwave radiation scheme and shortwave radiation scheme adopted
RRTM and Dudhia, respectively, the boundary layer process scheme utilized YSU,
and the land surface process scheme used NOAH Land surface model (Table
5.4
).
The simulation was implemented with the climate forcing data from January of
2010 to December of 2050.
