Meteorol. Z. (Contrib. Atm. Sei.) 
PrePub Article. 2020 
S. Schwegmann & J. Holfort: Baltic sea ice volume 1982-2019 
5 
AprASIV 
Trend (m/y) 
<-0.70 
■1 -0.70 - -0.30 
-0.30 - -0.20 
■I -0.20 - -0.10 
I I -0.10 - -0.01 
I I -0.01 • 0.01 
[ I 0.01 - 0.05 
I I 0.06 - 0.10 
CD 0.10-0.15 
■1 0.15 - 0.20 
^B >0 20 
Feb ASIV 
Trend (mfy) 
^B <-0.70 
^B -0.70 - -0.30 
^B -0.30 - -0.20 
■i -0.20 - -0.10 
I I -0.10 - -0.01 
I I -0.01 • 0.01 
I I 0.01 - 0.05 
I I 0.06 - 0.10 
CD 0.10 -0.15 
M 0.16-0.20 
>0 .20 
Kaliningrad 
Kaliningrad 
Figure 4: Linear trend in accumulated sea ice volume for the months January, February, March, and April for the period 1982 to 2019. 
Blue colors show negative trends, red colors show positive trends.