
Figure 1
Location of the area and meteorological stations analyzed in the paper

Figure 2
The annual number of days with heavy precipitation on the Polish coast of the Baltic Sea, 2001-2014

Figure 3
The annual course of the mean monthly number of days with heavy precipitation on the Polish coast of the Baltic Sea, 2001-2014

Figure 4
The annual maximum daily precipitation totals on the Polish coast of the Baltic Sea, 2001-2014

Figure 5
The annual maximum cumulative 5-day widespread precipitation totals on the Polish coast of the Baltic Sea, 2001-2014

Figure 6
The annual number of widespread precipitation events on the Polish coast of the Baltic Sea, 2001-2014

Figure 7
The annual course of the monthly number of widespread precipitation events on the Polish coast of the Baltic Sea, cumulative values for the period 2001-2014

Figure 8
The annual course of the monthly duration of widespread precipitation on the Polish coast of the Baltic Sea, cumulative values for the period 2001-2014

Figure 9
The annual number of instances when the threshold value of 0°C (frost days) was exceeded on the Polish coast of the Baltic Sea, 2001-2014

Figure 10
The annual course of the mean monthly number of frost days on the Polish coast of the Baltic Sea, 2001-2014
Table 1
The number of days with ice (including floating ice given in parentheses) on the Polish coast of the Baltic Sea during winter seasons 2000/2001-2013/2014
| Winter season | Świnoujście | Ustka | Hel | |||
|---|---|---|---|---|---|---|
| Świna estuary | Open sea | Słupia estuary | Open sea | Open sea | Gulf of Gdańsk | |
| 2000/2001 | 16 (16) | 0 (0) | 6 (6) | 0 (0) | 0 (0) | 0 (0) |
| 2001/2002 | 16 (16) | 0 (0) | 5 (5) | 0 (0) | 0 (0) | 0 (0) |
| 2002/2003 | 59 (59) | 0 (0) | 35 (32) | 0 (0) | 0 (0) | 0 (0) |
| 2003/2004 | 18 (15) | 0 (0) | 18 (16) | 0 (0) | 0 (0) | 0 (0) |
| 2004/2005 | 7 (5) | 0 (0) | 7 (2) | 0 (0) | 0 (0) | 0 (0) |
| 2005/2006 | 51 (45) | 8 (7) | 29 (25) | 9 (9) | 0 (0) | 8 (6) |
| 2006/2007 | 0 (0) | 0 (0) | 2 (2) | 0 (0) | 0 (0) | 0 (0) |
| 2007/2008 | 12 (11) | 0 (0) | 3 (3) | 0 (0) | 0 (0) | 0 (0) |
| 2008/2009 | 30 (29) | 0 (0) | 6 (6) | 0 (0) | 0 (0) | 0 (0) |
| 2009/2010 | 67 (55) | 40 (31) | 48 (41) | 8 (2) | 0 (0) | 0 (0) |
| 2010/2011 | 62 (37) | 15 (13) | 46 (39) | 15 (15) | 0 (0) | 25 (14) |
| 2011/2012 | 20 (13) | 12 (10) | 24 (22) | 1 (1) | 0 (0) | 1 (1) |
| 2012/2013 | 31 (31) | 2 (2) | 29 (27) | 0 (0) | 0 (0) | 0 (0) |
| 2013/2014 | 23 (23) | 9 (9) | 14 (14) | 0 (0) | 0 (0) | 0 (0) |
| Total | 396 (339) | 86 (72) | 266 (234) | 33 (25) | 0 (0) | 34 (21) |
| Average | 30.5 (20.3) | 6.6 (5.5) | 20.5 (17.5) | 2.5 (1.9) | 0.0 (0.0) | 2.6 (1.6) |

Figure 11
The annual number (a) and annual course (b) of deep cyclones in Hel, 2001-2014, measured with the selected indices. Abbreviations explained in Section 2

Figure 12
The annual number (a) and the annual course of gale days (b) (bars) and mean annual (a) and monthly (b) wind speed (solid line) in Ustka, 2001-2014

Figure 13
Mean annual frequency [%] of wind directions in the following classes: 0-2, 3-5, 6-10 and > 10 m s-1 in Ustka, 2001-2014

Figure 14
The annual (a) and monthly (b) total number of storm surges on the Polish coast of the Baltic Sea, 2001-2014

Figure 15
The annual (a) and monthly (b) total number (bars) and cumulative duration (solid line) of long-lasting strong wind events on the Polish coast of the Baltic Sea, 2001-2014. Abbreviations explained in Section 2.