20
E. Raschke
I I I I I Ii
Figure 1.12: Annual global distribution of precipitation as estimated from ground-based measurements (from Legates, 1995).
1900
19 10
1920
1930
1940
1950
1960
1910
1980
1990
~
!
~
~
:;.
20
20
"
~E oimnn~nnfhTIt~~~~crnmF~~bf~~~~~rrrrrrrrrrrrnt°
2.s . 20
· 20
~
1i
· <0
. 40
ij
£ · 60 )..!!.....,..---r~-r-...,..-...,...--.---~-.-...,...---y-~-,-...,...~-.---r--' · 60
1900
19 10
1920
1930
1940
1950
1960
1910
1980
1990
Figure 1.13: Precipitation trends between 1900 and 1992 (from Hulme, 1995).
particles (e.g. Sheppard, 1990; using speedometers), which even might be a few meters away
from the instrument and thus be only moderately effected by the ship's effect on the atmospheric wind field. A large test series is now made within the framework of the Baltic Sea
Experiment (BALTEX), a regional subprogramme of the GEWEX, where several optical probes are mounted on ferry boats which are operationally crossing the Baltic sea.
E. Raschke
I I I I I Ii
Figure 1.12: Annual global distribution of precipitation as estimated from ground-based measurements (from Legates, 1995).
1900
19 10
1920
1930
1940
1950
1960
1910
1980
1990
~
!
~
~
:;.
20
20
"
~E oimnn~nnfhTIt~~~~crnmF~~bf~~~~~rrrrrrrrrrrrnt°
2.s . 20
· 20
~
1i
· <0
. 40
ij
£ · 60 )..!!.....,..---r~-r-...,..-...,...--.---~-.-...,...---y-~-,-...,...~-.---r--' · 60
1900
19 10
1920
1930
1940
1950
1960
1910
1980
1990
Figure 1.13: Precipitation trends between 1900 and 1992 (from Hulme, 1995).
particles (e.g. Sheppard, 1990; using speedometers), which even might be a few meters away
from the instrument and thus be only moderately effected by the ship's effect on the atmospheric wind field. A large test series is now made within the framework of the Baltic Sea
Experiment (BALTEX), a regional subprogramme of the GEWEX, where several optical probes are mounted on ferry boats which are operationally crossing the Baltic sea.