East Asia and Western Pacific METEOROLOGY AND CLIMATE

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Fig. . 2. Validation of Temperature Forecasts at (A) te the Royal Observatory Hong Kong (R.O.);
(B)) Macau; and (C) Guangzhou (O.Z.) during a Northerly Monsoon Surge with Overcast Conditions.
Simulation results from the Same Model Having Clear Sky Conditions (& M-Sunny); and
from m a Larger L Scale Model with Orid Length about 100 km (x 1 1 1 km) are included for Comparison.
FIG. 2 a CASE 1 — R.O.
FIG. 2 b
CASE 1 — MACAU
CASE 1 —
G.Z.
24 hr RMS error
bias
std. dev.
1st 12 hr RMS error
bias
std. dev.
RO
1.4
•0.3
1.4
1.4
•1.2
0.7
GZ
2.2
1.7
1.4
1.6
1.0
•1.3
Table 1
Macau
1.3
0.5
1.2
0.8
-0.4
0.7
M-SUNNY
4.8
2.0
4.4
2.1
-1.8
1.0
The RMS error is about 1.4 degrees for RO and Macau. It is
higher for the Guangzhou area (2.2 degrees) but is to be expected
since it is located nearer to the northern boundary and hence, is more