Trends and climate normals of weather variables and indices
In this section, you can consult trend maps (for the periods 1950 to 2020, 1971 to 2020 or 1991 to 2020) as well as climate normals maps (for the period 1991 to 2020) for the various weather indices and variables, including Forest-Weather indices. All maps are based on ERA5 reanalyses at a spatial resolution of around 30 km.
All trends represent ten-year trends, i.e. the annual trend over ten years. Note that only trends that are significant at a statistical significance level of 10% (p-value ≤ 0.1) are shown on the maps. Climate normals corresponds to the average value of the index or variable over the reference period 1991-2020. This reference value is used, among other things, to calculate the anomalies provided in the "Weather monitoring" section. For further details, please consult the "Methodology" section.
Using the interactive menu, please select, in order, the statistical analysis (trend or climate normals), the reference period for calculating the trend or the normals, the desired variable or index, the time scale on which the variable or index is summarized (monthly, seasonal or annual), the statistic calculated on the daily variable or index for the chosen period (e.g. monthly average of daily maximum temperature (Tmax)), and finally the month or season, where applicable.
Stat. analysis
Period
Variable
Time scale
Time scale stat.
Month / Season
Variables list
Season
