Meeting of COST-ES0601 (HOME) Mallorca 25-27 JAN 2010 “Results of Intercomparison on Monthly Benchmark” Kolokythas Kostas Patras, Greece LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS

Meeting of COST-ES0601, Mallorca LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS Meeting of COST-ES0601, Mallorca Outline Network Method Results Remarks

Meeting of COST-ES0601, Mallorca LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS Meeting of COST-ES0601, Mallorca Network - Data Series: temp/sur1/000001 Mean minimum monthly temperature series (1900-1999) 9 stations

Meeting of COST-ES0601, Mallorca LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS Meeting of COST-ES0601, Mallorca Missing Values: Observatori de l'Ebre-Roquetes 5 (DEC.: 6) Aeroport de Reus 22 Aeroport de Barcelona 1 Flix 26 Tivissa 2 Lleida 17 Vila-seca 10 Caldes de Montbui - Cardedeu 13

Meeting of COST-ES0601, Mallorca LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS Meeting of COST-ES0601, Mallorca Method - MASH Multiple Analysis of Series for Homogenisation (Szentimerey) - Statistical significance for break-point detection: 0.05 Procedure : - Filling of missing values: SAMMISS.BAT - Monthly outliers found: MASHLIER.BAT - Break-point detection-correction : MASHGAME.BAT, MASHGAUT.BAT, MASHCOR.BAT - Verification of homogenisation: samveri.bat

Meeting of COST-ES0601, Mallorca LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS Meeting of COST-ES0601, Mallorca Outliers  1 2 3 4 5 6 7 8 9 10 11 12 hotnm00000050d   hotnm00000060d 1974/75 hotnm00000070d 1935/36 1957/58 hotnm00000100d 1979/80 1931/32 1964/65 1959/60 hotnm00000110d hotnm00000120d 1980/81 1966/67 1932/33 hotnm00000130d 1930/31 1978/79 1955/56 1989/90 1956/57 1966/67 hotnm00000150d 1951/52 1942/43 hotnm00000160d Outliers

Meeting of COST-ES0601, Mallorca LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS Meeting of COST-ES0601, Mallorca Breaks  1 2 3 4 5 6 7 8 9 10 11 12 hotnm00000050d.txt   1928 1978 1905 1930 1928 1939 1983 1928 1906 1929 1927 1974 hotnm00000060d.txt 1947 1953 1947 1952 1947 1951 1947 1952 1972 1947 1952 1974 1935 1944 1959 1963 1972 1975 1972 1952 1972 1974 1947 1967 1971 1946 1946 1952 1984 hotnm00000070d.txt 1959 1959 1953 1977 1934 1953 1972 1978 1983 hotnm00000100d.txt 1962 1962 1982 1982 1992 1982 1990 1968 1972 1982 1983 1982 1935 1938 1960 1962 hotnm00000110d.txt honm00000120d.txt 1925 1987 1928 1955 1967 1978 1957 1976 1990 1962 1976 hotnm00000130d.txt 1930 1931 1964 1964 1953 1965 1936 1936 1962 1935 1962 1963 hotnm00000150d.txt 1907 1929 1939 1963 1982 1994 1905 1908 1929 1939 1981 1982 1906 1929 1939 1978 1989 1995 1907 1929 1939 1986 1905 1929 1945 1961 1988 1905 1915 1929 1942 1951 1961 1907 1928 1940 1960 1905 1928 1940 1961 1906 1928 1943 1961 1905 1928 1942 1978 1994 1905 1920 1928 1954 1976 1981 1993 1905 1906 1914 1928 1939 1981 1986 1993 hotnm00000160d.txt 1933 1932

Meeting of COST-ES0601, Mallorca LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS Meeting of COST-ES0601, Mallorca hotnm00000150d - Caldes de Montbui st8 1 2 3 4 5 6 7 8 9 10 11 12 1905   1906 1907 1928 1929 1939 1940 1961 1981 1982 Examples of consequent break-points

Meeting of COST-ES0601, Mallorca LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS Meeting of COST-ES0601, Mallorca hotnm00000060d - Aeroport de Reus st2 1 2 3 4 5 6 7 8 9 10 11 12 1946   1947 1952 1953 hotnm00000100d - Flix st4 1 2 3 4 5 6 7 8 9 10 11 12 1982   Examples of consequent break-points

Annual inhomogeneities

Meeting of COST-ES0601, Mallorca LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS Meeting of COST-ES0601, Mallorca Remarks Numerous break-points for a single station in a row (hotnm00000150d.txt: Caldes de Montbui) Verification of homogenization Monthly series: problem with 9th and 11th Sesonal – Anual series: need for additional homogenization Need for Metadata

Meeting of COST-ES0601, Mallorca LABORATORY OF ATMOSPHERIC PHYSICS, UNIVERSITY OF PATRAS Meeting of COST-ES0601, Mallorca Thank you for your attention