Geology Reference
In-Depth Information
Table 7.1 Statistical parameters for the daily meteorological data from the Chahnime Station, IR
of Iran
Data
set
Unit
X
mean
S
x
C
v
(S
x
/
X
mean
)
C
sx
X
min
X
max
Correlation
with E
T
°
C
0
41
23.2
9.69
0.417
0.20
0.872
−
W
km/
day
5
915
262.5
185.97
0.708
0.77
0.735
Ed
Kpa
0.08
6.53
2.93
1.41
0.481
0.50
0.852
RH
%
10.33
91.90
41.05
16.00
0.389
0.48
0.103
E
mm/
day
0
39.44
12.94
9.19
0.710
0.63
1
The automated weather station in this region is located at latitude 30
°
45
′
N and
longitude 61
E. It is called the Chahnime Station of Zabol, and is operated by the
IR Sistan va Balochastan Regional Water (IR SBRW). The daily meteorological data
measured at the Chahnime Station is available from IR SBRW (
http://www.sbrw.ir
)
on request. The study used 11 years of data (1983
°
40
′
2005), which included daily
-
records of air temperature (T,
°
C), wind speed (W, km/day), saturation vapor pressure
de
cit (E
d
, kPa), relative humidity (RH, %), and pan evaporation (E, mm). The major
statistical variables, such as mean (X
mean
), standard deviation (SD), skewness (C
sx
),
coef
cient of variation (S
x
), maximum (X
max
), and minimum (X
min
) of the daily
meteorological parameters from the study area are given in Table
7.1
, along with their
correlation with measured evaporation data. The time series plots of the daily
meteorological data used for the modeling are shown in Fig.
7.5
.
