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    EW-I-1: Weather-related disruptions in power supply

    The illustration EW-I-1 ’Weather-related disruptions in power supply’ contains a line chart showing the percentual proportions of unscheduled weather-related disruptions in terms of low voltage and medium voltage for the period from 2006 until 2021. For low voltage the values fluctuate between 5 and 21 percent while for medium voltage they fluctuate between 6 and 44 per cent. In 2007 the values were highest.

    … Weather-related disruptions in power supply Source: BNetzA (failure statistics) Download image (1.25 MB) The following contents contain this medium: EW-I-1+2: …

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    FW-R-4: Utilisation of raw timber

    The biaxial chart FW-R-4 ’Utilisation of raw timber’ is divided into two thematic components. The upper part of the chart shows data on the utilisation of raw coniferous timber, whereas the lower part shows data on the utilisation of raw deciduous timber. The proportion of each type of subsequent utilisation compared to the total volume is indicated in stacked columns: material objects, energy production, exports, increase in storage.

    … TI für Internationale Waldwirtschaft und Forstökonomie (Einschlagrückrechnung) Download image (203.93 kB) The following contents contain this medium: FW-R-4 + 5: …

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    FW-R-3: Humus reserves in forest soils

    The illustration FW-R-3 ’Humus reserves in forest soils’ indicates – for the period of 1992 to 2021 – in the shape of a line chart, the annual reserves of organic carbon in forest soils in tonnes per hectare. During the observation period, carbon reserves increased continuously and significantly from roughly 75 tonnes per hectare to 85 tonnes per hectare.

    … forest soils Source: TI für Waldökosysteme (analyses based on data from BZE Wald) Download image (79.46 kB) The following contents contain this medium: Humusstatus …

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    WW-I-5: Peak discharge values in watercourses

    The bar chart WW-I-5 ‘Peak discharge values in watercourses’ contains a biaxial diagram. The bar chart shows for the years 1961 to 2021 – separately for the hydrological winter half-year (1st November of the previous year to 30th April) and the hydrological summer half-year (1st May to 31st October) – on one hand the highest peak discharge at selected watercourse gauges as a multiple of MHQ.

    … Peak discharge values in watercourses Source: Run-off measurement of federal states Download image (144.71 kB) The following contents contain this medium: WW-I-5: Peak …

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    WW-I-4: Floodwater

    The bar chart WW-I-4 ’Floodwater’ shows – for the years of 1961 to 2021 – the number of floodwater days in the hydrological winter half-year (1st November of the previous year to 30th April) and in the hydrological summer half-year (1st May to 31st October) respectively, prevailing in the river basins of the Danube, Elbe, Rhine, Eider and Weser. The structure of the indicator is characterised by individual flood events which typically influence several river basins.

    … WW-I-4: Floodwater Source: Run-off measurement of federal states Download image (114.62 kB) The following contents contain this medium: WW-I-4: …

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    WW-I-1: Terrestrially stored water

    The line chart WW-I-1 ’Terrestrially stored water’ shows the deviations of the entire terrestrially stored water masses from the long-term mean for the months of the period 2002–2021 in millimetres. The time series is marked by distinct fluctuations. While there is still a tendency towards positive anomalies at the beginning of the 2000s, it is clear that in Germany, the terrestrially stored water masses have been decreasing substantially since the beginning of 2010.

    … stored water Source: ISDC/ GravIS – GeoForschungsZentrum (processing of GRACE data) Download image (132.16 kB) The following contents contain this medium: WW-I-1: …

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    GE-R-3: Information on pollen

    The illustration GE-R-3 ’Information on pollen’ contains a biaxial chart. The chart shows the number of subscribers to the pollen exposure risk index and the number of pollen diary users. The number of subscriptions to the pollen exposure risk index increased to roughly 19,000 from the year of 2008 to the middle of the 2010s. Up to 2014 only the Pollen app was included, from 2015 onwards the figures are summarised for subscriptions to the Pollen app and the ‘Husteblume’ app.

    … Information on pollen Source: DWD (pollen exposure risk index)/ PID (pollen diary) Download image (138.99 kB) The following contents contain this medium: GE-R-3: …

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    GE-I-1: Heat stress

    The illustration GE-I-1 ’Heat stress’ contains two lines indicating the number of hot days and the number of tropical nights respectively, in terms of the German area mean for the years from 1951 to 2021. Besides, the bar chart shows, for the years from 2005 to 2021, the mean number of days on which warnings were issued regarding major as well as extreme heat stress in the GWS warning districts. There is no significant trend discernible for the development of the number of days with heat warnings.

    … GE-I-1: Heat stress Source: DWD (Open-Data-Server) Download image (150.05 kB) The following contents contain this medium: GE-I-1: Heat …

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    HMP Birthday Calendar: April

    Photo of birch trees in bloom featuring the text: Dispose of used tissues via household waste – for the sake of the environment

    … should be disposed of in the household waste. Source: Тамара Андреева / Adobe Stock Download image (698.30 kB) The following contents contain this medium: Bildergalerie …