In this paper, the CMA-TRAMS tropical high-resolution
system was used to forecast a typical hot weather process in Guangdong, China
with different horizontal resolutions and surface coverage. The results of
resolutions of 0.02° and 0.06° were presented with the same surface coverage of
the GlobeLand30 V2020, companies with the results of resolution 0.02° with the
USGS global surface coverage. The results showed that, on the overall
assessment the 2 km model performed better in forecasting 2 m temperature,
while the 6 km model was more accurate in predicting 10 m wind speed. In the
evaluation of representative stations, the 2 km model performed better in
forecasting 2 m temperature and 2 m relative humidity at the coastal stations,
and the 2 km model was also better in forecasting 2 m pressure at the
representative stations. However, the 6 km model performed better in
forecasting 10 m wind speed at the representative stations. Furthermore, the 2
km model, owing to its higher horizontal resolution, presented a more detailed
stratification of various meteorological field maps, allowing for a more
pronounced simulation of local meteorological element variations. And the use
of the surface coverage data of the GlobeLand30 V2020 improved the forecasting
of 2 m temperature, and 10 m wind speed compared to the USGS surface coverage
data.
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