Baltic Sea Ice Climate Workshop 2005
48
Source material
1: The reconstruction of ice winter severity in the Western Baltic for the period 1879-2005 is
based on the accumulated areal ice volume along the German Baltic coast (Koslowski, 1989;
Schmelzer, 1994).
m
40 I-1
35
30
25
20
15
10
Journal notes from signal stations + temperature series + regression equation
Official observations of day of ice occurrence + regression equation
I Official observations and measurements of ice
^ -111111 ■ 111 ■ « 11 ■ I ■ 1111 ■ I
j L i.l-.l >1. ...
-4M
11Tini1111111111
r^aOOOCDCDOO-i— -i— CMCMOOOO'sl-'Nl-LOLOCOCOh-h-OOOOCDCDO
COCOCOOOOOCDCDCDCDCDCDCDCDCDCDCDCDCDCDCDCDCDCDCDCDO
Fig. 2. Accumulated areal ice volume on the German Baltic coast in the period 1879-2005
2: The reconstruction of ice winter severity in the Western Baltic for the period 1701-1878 is
based on the accumulated areal ice volume, subdivided into seven classes (ice winter severity
types), (Koslowski and Glaser, 1995)
Ice winter index numerals
in m
Ice
Weak
< 0,50
0
Moderate.
0,50-2,00
0.1
Moderate +
2,01-4,00
0.3
Strong.
4,01-6,00
0.5
Strong +
6,01-9,00
1
Very strong
9,01-20,00
2
Extreme
>20,00
3
O
h-OO
LO
CM
CD
CO
OO
o
"M"
T—
OO
LO
CM
CD
co
h-OO
CD
CD
o
CM
CM
CO
-M-■M"
LO
CO
CO
hh-
OO
OO
OO
OO
00
OO
OO
OO
OO
00
-1—
-1—
-1—
-1—
-1—
-1—
-1—
-1—
-1—
-1—
-1—
-1—
-1—
-1—
-1—
Fig. 3. Ice winter index numerals 1701 - 1878
