Yorkshire & Humber climate change adaptation

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yorkshirefutures
 

Royal Haskoning

 
UK Climate Impacts Programme
 
 
  Environment Agency
 
Yorkshire Forward
 
Yorkshire and Humber Assembly
 
 
 

 

earwig results - average seasonal rainfall

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Average Seasonal Rainfall (mm/year)
Winter is the only season that records an increase in the average monthly rainfall from the baseline data. This is an increase of approximately 15%. Spring changes are relatively small with an average -1% decrease in rainfall. However, summer records a relative change of rainfall up to 25%. This is smaller in the upland areas recording a 22% change.

 

Spring Average Rainfall
The arithmetically averaged monthly rainfall recorded during March, April and May in mm.

Location

Baseline (mm)

2050s (mm)

Absolute Change (mm)

Relative Change (%)

Mean

Standard Deviation

Mean

Standard Deviation

 

 

1

49.2

15.1

48.5

15.7

-0.7

-1.4

2

81.4

21.0

80.4

22.3

-1.0

-1.2

3

68.5

18.7

69.3

19.2

+0.9

+1.3

4

50.0

13.2

50.1

13.5

+0.0

+0.0

5

45.7

11.9

44.6

12.0

-1.1

-2.5

6

53.0

14.4

51.7

13.5

-1.3

-2.4

7

48.5

13.1

48.4

13.2

-0.1

-0.2

8

58.7

16.3

57.1

16.0

-1.6

-2.8

 

Summer Average Rainfall
The arithmetically averaged monthly rainfall recorded during June, July and August in mm.

Location

Baseline (mm)

2050s (mm)

Absolute Change (mm)

Relative Change (%)

Mean

Standard Deviation

Mean

Standard Deviation

 

 

1

55.7

15.9

41.6

13.5

-14.1

-25.3

2

71.5

18.1

55.5

16.1

-16.0

-22.4

3

69.8

19.1

53.8

16.5

-16.0

-22.9

4

55.8

16.7

43.2

15.3

-12.5

-22.5

5

54.0

15.9

40.2

13.6

-13.8

-25.6

6

54.0

15.9

41.2

14.5

-12.8

-23.7

7

55.3

15.7

41.8

14.9

-13.5

-24.4

8

57.3

18.0

42.9

17.4

-14.3

-25.0

 

Autumn Average Rainfall
The arithmetically averaged monthly rainfall recorded during September, October and November in mm.

Location

Baseline (mm)

2050s (mm)

Absolute Change (mm)

Relative Change (%)

Mean

Standard Deviation

Mean

Standard Deviation

 

 

1

59.1

17.3

54.7

15.7

-4.4

-7.5

2

111.9

27.5

107.7

26.7

-4.1

-3.7

3

90.6

23.5

84.0

23.5

-6.7

-7.4

4

65.5

18.4

60.6

18.0

-5.0

-7.6

5

55.9

14.4

51.2

13.6

-4.7

-8.4

6

64.4

16.7

59.4

17.3

-5.0

-7.8

7

59.4

16.1

56.1

16.2

-3.3

-5.6

8

69.1

18.2

64.6

18.1

-4.5

-6.6

 

Winter Average Rainfall
The arithmetically averaged monthly rainfall recorded during December, January and February in mm.

Location

Baseline (mm)

2050s (mm)

Absolute Change (mm)

Relative Change (%)

Mean

Standard Deviation

Mean

Standard Deviation

 

 

1

55.9

13.8

64.3

16.3

+8.4

+15.0

2

128.3

31.2

143.7

32.9

+15.4

+12.0

3

87.8

18.9

101.6

21.2

+13.8

+15.7

4

58.3

13.5

67.7

15.1

+9.4

+16.1

5

51.2

13.2

58.9

14.0

+7.7

+15.1

6

61.9

16.6

71.0

16.6

+9.0

+14.6

7

54.9

14.2

64.3

15.3

+9.4

+17.2

8

72.0

17.9

82.0

18.5

+10.0

+14.0