Minnesotans For Sustainability©

 

Sustainable:  A society that balances the environment, other life forms, and human interactions over an indefinite time period.

 

 

 

Earlier in the Year Snowmelt Runoff and Increasing Dewpoints for Rivers
            in Minnesota, Wisconsin and North Dakota

                        Patrick J. Neuman

 

 

Average monthly dewpoint (F), Duluth, Minnesota

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yr

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Ann

 

 

 

 

 

 

1 of 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 of 4

1948

-0.6

2.2

15.7

31.3

36.8

48.9

55.8

56.3

49.1

35.3

25.1

8.5

30.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1949

6

2.1

14

29.8

39.3

52.5

57.7

58.3

43.9

36.9

25.2

7.3

31.3

 

 

 

 

 

 

 

 

Mov avgs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1950

-5.9

4.7

10.2

21.8

35.4

47.5

53.7

49.1

46.7

38.1

17.1

2.9

26.9

 

Mean Dewpoint (F)

 

 

 

   Annual

 

 

 

Mean Dewpoint (F)

 

 

 

 

 

 

 

 

 

1951

-0.7

7.4

12.2

28.1

41.1

49

55.1

53.4

45.4

36.3

14.6

4.9

29

 

 

 

 

 

 

 

 

 

5 yr

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1952

1.2

13.6

15.6

29.7

37.5

50.4

57.6

54.6

48

26.5

22.9

16.8

31.2

 

 

 

 

 

 

 

 

1952

29.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1953

6.5

6.7

19.2

25

37.6

51.7

55.9

58.3

45.7

40.4

26.3

10.6

32.1

 

1st 10yr avg for 1948-1957

 

 

1953

30.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1954

-1.7

17.6

11.9

25.3

34.5

51.4

56.2

54.6

47.6

35.2

26.1

14.3

31.1

 

is plotted at 1957 on x axis

 

 

1954

30.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1955

3.3

4.4

9.1

33.2

39.4

52.3

60.6

58.9

45.9

35.9

16.2

1.7

30.2

 

10 yr moving averages

10yr

 

1955

30.7

 

 

 

 

10 year moving averages

 

 

10 year moving averages

1956

7.7

3.9

12

22.5

34.2

51

52.6

54

42.5

38.9

23.1

10.7

29.5

 

Jan

Feb

Mar

Apr

 

 

 

1956

30.8

 

May

 

Jun

 

Jul

 

Aug

 

Sep

 

Oct

 

Nov

 

Dec

1957

-7.6

4.9

14.5

27.7

34.5

48.8

57.6

54.6

45.1

36.2

22.7

11.1

29.3

1957

0.8

6.8

13.4

27.4

1957

30.1

 

1957

30.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1958

10.5

1.4

19.3

24.7

32.2

44.1

53.7

53.6

48.4

37.6

22.4

-0.5

29.1

1958

1.9

6.7

13.8

26.8

1958

30

 

1958

29.8

 

 

 

 

 

 

 

 

 

 

1958

36.2

1958

21.7

1958

7.98

1959

-5.3

2.5

16.5

24.5

40.5

49.5

56.3

58.5

48.1

33.9

11.5

19.5

29.8

1959

0.8

6.7

14.1

26.3

1959

29.8

 

1959

29.6

1959

36.7

1959

49.6

1959

55.9

1959

55

1959

46.3

1959

35.9

1959

20.3

1959

9.2

1960

4.9

5.9

8.3

27.4

37.2

46.6

54.6

57.2

48.5

34.9

23.5

4.3

29.5

1960

1.9

6.8

13.9

26.8

1960

30.1

 

1960