Winter Rainfall UK 1910 to Jan 2014

Because of the floods, they are arguing about the amount of rainfall due to “climate change” over in the UK. Looking at the data from the UK Met for winter rainfall, it appears rainfall goes up and down.

I wonder if the usual AGW alarmist media blamed climate change for the dry period 2009 to 2011? Do I have to ask? Of course they did!

Guardian 17 November 2011: As well as the recent dry weather, water companies and environment regulators are expecting the UK to have more frequent dry winters as a result of climate change.

The graph below is Dec/Jan/Feb anomalies from the 1981-2010 mean. Click for a bigger version.

UK WINTER Rainfall Anomaly From 1981-2010 Mean

UK 5th Coldest Spring in 104 Years

UK 5th Coldest Spring in 104 Years (data).

Spring Mean in C Year
5.8 1962
5.81 1951
5.88 1941
5.88 1917
5.99 2013
6.03 1979
6.18 1958
6.19 1969
6.29 1932
6.3 1986
6.31 1924
6.35 1996
6.42 1955
6.47 1916
6.51 1975
6.53 1922
6.55 1931
6.57 1970
6.67 1923
6.7 1983
6.75 1984
6.77 1915
6.79 1934
6.81 1919
6.83 1968
6.86 1925
6.87 1985
6.89 1930
6.94 1947
7.02 1977
7.02 1937
7.03 1987
7.06 1966
7.06 1965
7.11 1963
7.11 1929
7.12 1973
7.13 1976
7.13 1967
7.14 1980
7.15 1936
7.16 1978
7.17 1971
7.17 1935
7.17 1910
7.18 1928
7.19 1954
7.19 1942
7.22 1974
7.22 1956
7.28 1913
7.32 1995
7.35 2006
7.37 1994
7.38 2001
7.39 1972
7.4 1918
7.42 1927
7.49 1926
7.51 1946
7.52 1953
7.53 1939
7.55 1911
7.57 1964
7.58 1949
7.6 2010
7.6 1988
7.6 1914
7.62 1950
7.64 1982
7.67 1920
7.69 1989
7.69 1944
7.72 1921
7.81 1940
7.82 1981
7.88 1991
7.94 1993
8.05 2000
8.08 1938
8.12 2005
8.13 2008
8.18 1912
8.21 2012
8.25 1933
8.26 1960
8.27 1998
8.29 1957
8.36 1948
8.42 2004
8.42 1997
8.48 2002
8.48 1943
8.52 1959
8.52 1952
8.53 1961
8.54 1992
8.56 1990
8.62 2009
8.64 1999
8.76 2003
8.8 1945
9.05 2007
9.15 2011

UK Decembers Tmax Cooling -.45C/decade for 30 years and Sunshine is Up Too

Using UK Met data from here, I noticed that Tmax for Decembers are cooling at -.45C / decade for 30 years.  Thats a lot!

And then I wondered why? A theme I have returned to over and over is that hours of bright sunshine has increased because of cleaner air. Could more sunshine in December lead to cooler Decembers since clear skies can lead to colder temperatures in winter?

Guess what. Sunshine is up an average of 5.5 hours per year in December for the last 30 years. And compared to 1988 sunshine is up 80% in December. Instead of 28 hours of sunshine in December, the average is closer to 48.

Click on the graphs to enlarge.

Dec UK Met Last 30 Years - UK - Temp

 

Dec UK Met Last 30 Years - UK - Sunshine Hours

 

UK Tmax versus Sunshine are well correlated. Cleaner Air. More Sunshine.

This graph is Tmax % of normal versus Sunshine% of normal. The curved lines are the Loess curves from [R]. Data retrieved from here.

Why would sunshine be higher? Cleaner air in the UK (until China and India started to burn a lot more coal) thanks to the Clean Air Acts of 1956 and 1968.

The loess curves bottom out around 1968/1972.

UK Tmax vs Sunshine (Annual)_Tmax_Sunshine