Geography Reference
In-Depth Information
(a)
(b)
N
N
(km)
(km)
0
50
100
200
0
50
100
200
Province boundary
Province boundary
Fig. 4.10 Map of the unchanged and newly increased urban and built-up land (a), and map of the
unchanged and decreased dryland cropland (b)
Observed value and
simulated value/
Observed value -
Simulated value/
Observed Value
Simulated Value
Observed Value - Simulated Value
5
30
25
4
20
3
15
2
10
1
5
0
0
-5
-1
3
4
5
6
7
8
9
10
11
12
1
2
Fig. 4.11 Comparisons of simulated and observed values of the monthly average temperature at
2 m above the ground
simulation data both appear around July, and the lowest temperatures in the
observation data and simulation data both appear around January. The decreasing
rate of the temperature during September and November is a bit higher than that
during March and May, i.e., the temperature decreases a little more quickly in the
autumn than it increases in the spring.
According to the spatial pattern of the daily average temperature in February
and August, both simulation data and the ground-based observation data indicate
the temperature is lower in the north part and higher in the south part, it is colder in
the mountainous area and warmer in the plain area in the regions at the same
latitude, and it is warmer in the inland region than in the coastal region (Fig. 4.12 ).
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