1 Article 2 Severe drought in the spring of 2020 in Poland. More 3 of the same?
4 Iwona Pińskwar 1,*, Adam Choryński 1 and Zbigniew W. Kundzewicz 1
5 1 Institute for Agricultural and Forest Environment, Polish Academy of Sciences, Bukowska 19, Poznań 60- 6 809, Poland; [email protected] 7 * Correspondence: [email protected]
8 Supplementary Material
Agronomy 2020, 10, x; doi: FOR PEER REVIEW www.mdpi.com/journal/agronomy Agronomy 2020, 10, x FOR PEER REVIEW 2 of 13
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9 Figure S1. Values of SPEI 12 for 13 analyzed stations from January 1971 to May 2020 (left column) and for 10 grid with stations from January 1950 to May 2020 based on SPEI Global Drought Monitor (right column). 11
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12 Figure S2. Values of SPEI 24 for 13 analyzed stations from January 1971 to May 2020 (left column) and for 13 grid with stations from January 1950 to May 2020 based on SPEI Global Drought Monitor (right column). 14
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15 Figure S3. Values of SPEI 30 for 13 analyzed stations from January 1971 to May 2020 (left column) and for 16 grid with stations from January 1950 to May 2020 based on SPEI Global Drought Monitor (right column). 17
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18 Table S1. The drought periods for which the value of SPEI 12 stayed below -0.5 and lasted at least five 19 months with minimum value below -1.5 (definition of severe drought), based on results of SPEI 12. The most 20 severe values are marked in bold.
Station Cumulative Last month of Minimum Data of Duration deficit below drought value during minimum (month) -0.5 period event occurence Szczecin 16 -18.16 Nov-83 -1.68 Jan-83 17 -20.96 May-90 -1.75 Jun-89 18 -24.99 Oct-04 -2.13 Nov-03 21 -30.15 Apr-17 -1.96 May-16 23 -36.26 May-20 -2.30 Apr-19 Toruń 23 -33.97 Jun-84 -1.94 Jan-83 15 -25.41 Aug-90 -2.46 Sep-89 14 -16.80 Jul-93 -1.59 May-93 13 -13.08 Aug-06 -1.73 Jul-06 24 -31.93 Jul-16 -1.78 Sep-15 21 -31.91 May-20 -1.98 Nov-18 Białystok 8 -17.01 Jul-72 -2.30 Feb-72 8 -8.83 Jun-84 -1.64 Apr-84 13 -13.49 Jun-90 -1.74 Sep-89 25 -34.04 Aug-01 -2.18 May-00 23 -29.86 May-04 -1.91 Mar-03 15 -16.04 Sep-06 -1.93 Jul-06 22 -29.69 Jun-16 -2.19 Aug-15 8 -9.62 Apr-19 -1.68 Nov-18 Gorzów Wielkopolski 23 -30.49 May-84 -1.91 Feb-83 19 -24.56 Aug-90 -1.86 Sep-89 17 -25.67 Aug-93 -2.18 May-93 13 -14.70 May-04 -1.64 Nov-03 23 -25.95 Mar-17 -1.64 Aug-15 18 -26.96 Jan-20 -2.13 Apr-19 Poznań 24 -38.57 Jun-84 -2.04 Jun-83 23 -42.30 May-20 -2.23 Jun-19 Warszawa 21 -30.75 Jun-77 -2.08 Jul-76 13 -15.29 Jun-84 -1.71 Apr-84 7 -7.47 Dec-92 -1.58 Aug-92 5 -6.04 Aug-00 -1.90 Jun-00 26 -25.32 May-07 -1.96 Jul-06 17 -24.56 Sep-16 -2.02 Aug-15 24 -39.60 May-20 -2.10 May-20 Siedlce 11 -10.66 Jun-74 -1.50 Sep-73 15 -21.78 Jun-84 -2.10 Apr-84 13 -12.88 Aug-00 -2.10 Jun-00 21 -29.71 Apr-04 -1.81 Mar-03 21 -30.24 Aug-06 -2.59 Jul-06 8 -9.45 Apr-19 -1.59 Nov-18 12 -15.32 May-20 -1.66 Jan-20 Terespol 8 -15.05 Jul-72 -2.20 May-72 13 -18.41 Sep-92 -1.80 Aug-92 24 -34.38 Jul-04 -1.84 Nov-03 13 -19.79 Jul-06 -1.83 May-06 9 -7.53 Oct-12 -1.61 Jul-12
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14 -19.05 Jun-16 -2.27 Aug-15 24 -34.55 May-20 -1.85 Dec-19 Zielona Góra 22 -24.13 May-84 -1.57 Jan-83 15 -21.99 Jun-93 -1.96 May-93 47 -49.74 May-07 -2.00 Jul-06 15 -18.66 Jul-16 -1.76 Sep-15 23 -38.24 May-20 -2.18 Apr-19 Wrocław 23 -26.49 Jun-91 -1.87 Jul-90 16 -21.08 Sep-93 -1.74 Apr-93 10 -11.56 Jun-95 -1.66 Apr-95 16 -24.05 Aug-16 -2.15 Sep-15 26 -43.04 May-20 -2.24 Jul-19 Kalisz 23 -30.44 Apr-91 -1.88 Jun-90 14 -18.18 Jul-93 -1.67 May-93 40 -40.31 Oct-06 -1.62 Jul-06 12 -15.04 Jun-09 -1.66 Apr-09 19 -23.66 Mar-13 -1.66 Jul-12 15 -25.16 Jul-16 -2.18 Sep-15 23 -35.10 May-20 -1.77 Jun-19 Łódź 23 -33.63 Aug-84 -2.10 Mar-84 14 -18.04 Jul-93 -1.73 Aug-92 31 -35.31 Jun-07 -1.75 Jul-06 26 -31.68 Jul-16 -2.05 Sep-15 21 -31.78 May-20 -2.16 Mar-20 Lublin 8 -14.69 Jul-72 -2.25 Jun-72 11 -13.97 Apr-77 -1.73 Jan-77 15 -21.89 Aug-83 -2.24 Nov-82 9 -9.25 Aug-84 -1.72 Apr-84 6 -5.57 Oct-06 -1.65 Jul-06 18 -20.23 Feb-13 -1.99 Sep-12 9 -9.76 Mar-16 -1.72 Aug-15 23 -36.18 May-20 -2.32 Apr-19 Włodawa 9 -9.94 Apr-83 -1.57 Nov-82 12 -13.01 May-84 -1.97 Apr-84 16 -16.78 Mar-97 -2.11 Jun-96 25 -39.73 Aug-04 -2.30 Nov-03 12 -12.73 Aug-06 -2.14 Jul-06 8 -10.44 Feb-13 -1.94 Jul-12 13 -18.73 Jun-16 -2.12 Aug-15 21 -29.52 May-20 -1.93 Jan-20 21
22 Table S2. The drought periods for which the value of SPEI 24 stayed below -0.5 and lasted at least five 23 months with minimum value below -1.5 (definition of severe drought), based on results of SPEI 24. The most 24 severe values are marked in bold.
Station Cumulative Last month of Minimum Data of Duration deficit below drought value during minimum (month) -0.5 period event occurence Szczecin 13 -15.05 Dec-73 -1.82 Jun-73 13 -16.86 Jul-84 -1.54 Mar-84 23 -27.28 Apr-91 -1.64 Jul-90 45 -53.47 May-07 -1.85 Oct-04
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26 -36.14 Jun-17 -1.96 Sep-16 12 -23.01 May-20 -2.11 Apr-20 Toruń 29 -38.73 May-85 -2.12 Feb-84 25 -34.27 Jul-91 -1.92 Jul-90 15 -17.38 Aug-93 -1.79 Jun-93 24 -23.62 Jun-07 -1.67 Jul-06 24 -32.19 Jan-17 -2.29 Jun-16 12 -21.20 May-20 -2.14 Apr-20 Białystok 14 -17.62 Aug-84 -1.64 May-84 51 -78.11 Jul-04 -2.27 May-01 14 -13.96 Dec-06 -1.93 Jul-06 16 -25.05 Sep-16 -2.19 Sep-15 Gorzów Wielkopolski 24 -28.54 Sep-84 -1.81 Mar-84 59 -77.46 May-94 -2.27 Jun-93 29 -36.51 May-17 -1.69 Sep-16 12 -19.78 May-20 -1.92 May-20 Poznań 35 -49.50 Jul-85 -2.11 Mar-84 23 -38.67 May-20 -2.29 Dec-19 Warszawa 22 -29.35 Mar-78 -1.99 Jan-77 14 -19.05 Aug-84 -1.70 Apr-84 24 -28.43 Aug-07 -1.94 Jul-06 25 -33.98 Jun-17 -2.01 Sep-16 15 -28.41 May-20 -2.49 Feb-20 Siedlce 25 -32.00 May-85 -1.84 Apr-84 16 -14.50 Aug-01 -1.50 Jun-00 64 -88.31 Oct-07 -2.38 Jul-06 12 -16.66 May-20 -1.78 Apr-20 Terespol 15 -16.58 Aug-93 -1.66 Aug-92 52 -70.87 Sep-07 -2.19 Sep-03 26 -30.63 Mar-17 -1.90 Jun-16 16 -27.05 May-20 -2.27 Apr-20 Zielona Góra 13 -17.54 Jul-84 -1.50 Mar-84 51 -61.72 Sep-93 -1.94 Jun-93 54 -62.33 Feb-08 -1.85 Jul-06 27 -28.86 Jun-17 -1.51 Sep-16 20 -28.95 May-20 -2.12 Jan-20 Wrocław 38 -37.88 May-95 -1.69 Jun-93 27 -32.80 Jul-17 -1.59 May-16 25 -41.18 May-20 -2.34 Apr-20 Kalisz 30 -37.25 Feb-92 -1.78 Aug-90 41 -45.14 Sep-07 -1.56 Jul-06 24 -24.52 Mar-14 -1.56 Dec-12 26 -35.50 Jun-17 -1.73 Jun-16 20 -27.72 May-20 -2.05 Apr-20 Łódź 25 -37.79 Jul-85 -2.03 Jun-84 39 -44.92 Sep-07 -1.87 Jul-06 23 -30.65 Mar-17 -1.77 Sep-15 12 -19.34 May-20 -1.99 Apr-20 Lublin 33 -41.88 May-85 -2.09 Feb-84 20 -21.06 Aug-07 -2.02 Jul-06 12 -13.67 Apr-13 -1.96 Sep-12 23 -37.95 May-20 -2.39 Apr-20
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Włodawa 15 -19.07 Aug-84 -1.77 Dec-83 15 -14.57 Apr-91 -1.76 Aug-90 6 -6.12 Jun-96 -1.52 May-96 9 -9.89 Jun-97 -1.52 Mar-97 48 -71.01 Jun-07 -2.73 Sep-03 16 -23.89 May-20 -2.03 Dec-19 25
26 Table S3. The drought periods for which the value of SPEI 30 stayed below -0.5 and lasted at least five 27 months with minimum value below -1.5 (definition of severe drought), based on results of SPEI 30. The most 28 severe values are marked in bold.
Station Cumulative Last month Minimum Duration Data of minimum deficit below of drought value during (month) occurence -0.5 period event Szczecin 16 -16.76 Sep-74 -1.64 Jun-73 23 -26.71 Oct-91 -1.55 Jan-91 39 -53.21 May-07 -1.90 Jun-05 27 -37.94 Sep-17 -1.92 Nov-16 11 -14.75 May-20 -2.13 May-20 Toruń 26 -39.34 Jul-85 -2.06 Feb-84 27 -37.56 Feb-92 -1.82 Feb-91 15 -16.66 Aug-93 -1.55 Jun-93 27 -27.04 Jun-07 -1.73 Jul-06 23 -33.03 Mar-17 -2.26 Jun-16 10 -12.87 May-20 -2.13 Apr-20 Białystok 22 -24.45 Mar-85 -1.54 Apr-84 58 -90.82 Feb-05 -2.19 Feb-01 21 -25.41 Feb-17 -1.90 Mar-16 Gorzów Wielkopolski 36 -39.19 Dec-85 -1.77 Apr-84 60 -85.30 Nov-94 -2.11 Jun-93 27 -36.84 Jun-17 -1.66 Nov-16 7 -9.37 May-20 -1.86 May-20 Poznań 36 -53.38 Dec-85 -2.17 Jun-84 49 -51.98 Mar-08 -1.51 Jul-05 22 -35.13 May-20 -2.26 May-20 Warszawa 25 -30.08 Jun-78 -2.12 Jun-77 21 -23.90 May-85 -1.73 Apr-84 36 -37.81 Nov-92 -1.54 Aug-92 26 -30.62 Feb-08 -1.76 Jul-06 26 -34.56 Sep-17 -2.03 Sep-16 12 -22.87 May-20 -2.61 Apr-20 Siedlce 25 -31.63 Apr-85 -1.71 Apr-84 63 -93.40 Mar-08 -2.13 Jul-06 11 -11.86 May-20 -1.86 Apr-20 Terespol 59 -82.46 Mar-08 -2.13 Mar-04 22 -28.04 Mar-17 -1.68 Dec-15 14 -22.26 May-20 -2.20 Apr-20 Zielona Góra 49 -64.77 Jan-94 -1.74 Jun-93 49 -64.37 Mar-08 -1.87 Jul-06 14 -20.60 May-20 -2.06 May-20 Wrocław 66 -76.69 May-95 -1.52 Sep-94 34 -37.47 Oct-06 -1.52 Nov-05
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30 -33.70 Jan-18 -1.56 Dec-15 24 -38.15 May-20 -2.44 Apr-20 Kalisz 53 -59.79 Feb-94 -1.78 Mar-91 44 -49.26 Feb-08 -1.68 Oct-05 28 -36.51 Sep-17 -1.79 Dec-15 14 -20.73 May-20 -2.13 Apr-20 Łódź 29 -39.14 Nov-85 -1.99 Jun-84 47 -47.83 Mar-94 -1.51 Aug-92 41 -50.39 Mar-08 -1.84 Oct-06 23 -29.04 Apr-17 -1.86 Dec-15 10 -12.47 May-20 -2.13 Apr-20 Lublin 32 -43.32 Nov-85 -2.09 Jun-84 22 -35.25 May-20 -2.51 Apr-20 Włodawa 23 -25.50 Feb-85 -1.61 May-84 49 -76.83 Jun-07 -2.67 Mar-04 14 -20.47 May-20 -2.14 Apr-20 © 2020 by the authors. Submitted for possible open access publication under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). 29