Section 4.3: Surface Climate Analysis
63
Figure 4.4: Standardised regional annual precipitation anomaly time series
for the territory of the former Soviet Union. Standardization of each station
time series is achieved by subtracting the reference period precipitation and
dividing by the standard deviation. The regional series is the average of all
available station series. No form of areal weighting is used. The reference
period used {or calculating the annual means and standard deviations was
1951-80.
USSR,1851-1991
wilh respect 101951-1980
2} 3r-.--.,---r-.,.-r--,--.---r--r-r-~-r---.----,...---.
'c ::J
>tü 2
E
o
c
CIS
~ (1)
'E
~ 0 mmmrnmmmm~~mmrnm~~~mrn~
~
-1
-2
-3 ~18~6~O~~'~88~O~~1~90~O~~'~92~O~~1794~O~~1~9~60~L-'~9~8~O-L-2~OOO
year