Assessment of observed daily temperature and precipitation extremes

External Data Spec Published 13 Jun 2012
Current interest in extreme weather events is motivated by the vulnerability of our society to the impacts of such events. The supposed increase in the occurence of extremes and the concern about anthropogenic climate change focuses attention on trends in extremes accompanying ‘global warming’. IPCC (2001) concludes that ‘most of the observed warming over the last 50 years is likely to have been due to the increase in greenhouse gas concentrations’. Yet, knowledge of changes in the occurrence of extremes is still limited.
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Royal Netherlands Meteorological Institute (KNMI)
information.png Dataset URL:
http://eca.knmi.nl/documents/ECAreportHighRes.pdf
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http://eca.knmi.nl

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Produced figures

Trend in annual temperature across Europe Grid boxes outlined in solid black contain at least three stations and so are likely to be more representative of the grid box. High confidence in the long-term trend is shown by a black dot. (In the map above, this is the case for all grid boxes.) Area averaged annual time series of percentage changes and trend lines are shown below each map for one area in northern Europe (green line, 5.6 ° to 16.9 °E and 56.2 ° to 66.2 °N) and one in south-western Europe (purple line, 350.6 ° to 1.9 °E and 36.2 ° to 43.7 °N).
Trend in annual temperature across Europe Grid boxes outlined in solid black contain at least three stations and so are likely to be more representative of the grid box. High confidence in the long-term trend is shown by a black dot. (In the map above, this is the case for all grid boxes.) Area averaged annual time series of percentage changes and trend lines are shown below each map for one area in northern Europe (green line, 5.6 ° to 16.9 °E and 56.2 ° to 66.2 °N) and one in south-western Europe (purple line, 350.6 ° to 1.9 °E and 36.2 ° to 43.7 °N).
Trends in annual precipitation across Europe between Jan 1960 and Jan 2012 The figure shows trends in annual precipitation across Europe between Jan 1960 and Jan 2012. The trends are calculated using a median of pairwise slopes algorithm (Sen, 1968 ) (Lazante, 1996). Black dots represent high confidence in the sign of the long-term trend in the box (if the 5th to 95th percentile slopes are of the same sign). Boxes which have a thick outline contain at least three stations. Area averaged annual time series of percentage changes and trend lines are shown below each map for one area in northern Europe (Blue line, 5.6o to 16.9oE and 56.2o to 66.2oN) and one in south-western Europe (red line, 350.6o to 1.9oE and 36.2o to 43.7oN). Refer to (Met Office, 2012) for full explanation of methodology

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