Table 7 Abundance of adverse environmental conditions (fraction, number of days) during specific development stages of wheat denoted by BBCH stadium [31] in the four regions for the baseline (base, 1981–2010) and projected projections (max, med, min; 2021–2050) and the abundance of heat spells with certain lengths (indicators as given in Table 1)

31–50

 T_min < 0 °C

0.3

0.7

1.5

1.1

0.6

1.5

1.5

1.0

0.0

0.3

0.5

0.3

0.2

0.3

0.3

0.9

 øn [d]

21.9

33.3

33.4

33.5

22.0

33.5

33.9

34.0

17.2

26.7

26.7

26.8

20.8

31.5

27.2

31.6

51–60

 T_max > 25 °C

21.0

28.0

30.0

27.0

16.0

23.0

24.0

20.0

25.0

39.0

35.0

31.0

22.0

36.0

33.0

27.0

 T_max > 31 °C

1.5

3.1

3.9

3.5

0.6

1.6

2.2

1.6

2.6

3.2

5.7

6.2

1.8

3.5

4.0

4.4

 øn [d]

18.0

17.5

16.9

16.7

18.1

17.5

17.2

17.3

17.3

16.0

16.2

16.1

17.1

15.9

16.3

16.4

51–75

 T_max > 31 °C

3.9

4.6

4.6

4.0

1.3

3.2

2.6

2.2

5.9

6.3

6.7

5.6

4.2

4.9

5.6

4.3

 Heat DWD

0.3

0.2

0.0

0.0

0.0

0.0

0.0

0.0

0.2

0.2

0.1

0.1

0.7

0.7

0.5

0.1

 Drought

14.5

24.7

13.1

14.3

14.4

27.9

21.9

13.9

12.2

12.4

14.8

12.5

10.7

11.7

10.1

12.1

 øn [d]

39.0

37.9

38.2

38.0

34.2

38.1

39.1

39.0

37.4

35.8

36.4

36.6

37.3

35.4

36.2

36.6

51–75

 Heat spell 1

17

24

24

25

5

17

12

12

20

20

26

29

17

24

28

23

 Length [d] 2

5

3

4

5

2

7

3

2

12

8

10

1

7

5

10

7

 3

2

5

5

3

1

–

1

2

3

3

6

–

3

2

1

–

 4

–

–

1

–

–

1

1

1

1

2

1

1

1

1

1

2

 5

1

1

–

–

–

–

–

–

–

1

–

–

–

1

–

–

 6

–

–

–

–

–

–

–

–

–

1

–

–

–

–

–

–