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  • KomPass: Article from 28.11.2023 | Last changed: 12.12.2024

    LW-I-3: Hailstone damage in agriculture

    The picture shows a field of maize after a tempest. The maize plants are heavily damaged, with stalks snapped off. Between the plants, there are still areas of standing water.

    … % of harvest losses in this period – that is to say, prior to the drought years of 2018 to 2020 – can be attributed to drought, 26 % of damage to hail storms and just … to have its fair share of harvest damage or harvest losses. The drought summer of 2018 has demonstrated that the average yield losses mentioned above can sometimes be … with regional hailstorm events. Despite some regionally substantial damage, 2018 was overall a year with comparatively moderate damage, although between the end …

  • KomPass: Article from 28.11.2023 | Last changed: 12.12.2024

    FW-I-3 + 4: Forest condition and dieback rate

    … to climate-related changes. This has changed since the heat and drought years of 2018 to 2020. With the exception of oak the mean crown defoliation shows a rising … forest condition survey) FW-I-4: Dieback rate Owing to the drought years of 2018 to 2020, the dieback rates for all main tree species índicate a spontaneous, … changes. This has changed since the time of the heat and drought years of 2018 to 2020. Apart from oak trees, all main tree species nowadays indicate …

  • KomPass: Article from 28.11.2023 | Last changed: 11.12.2024

    WW-I-7: Water levels in lakes

    The picture shows a footbridge leading across the dried-up sandy and stony shore area of a lake. A bridge and some residual water are visible in the background.

    … groundwater levels have entailed – as a consequence of the extremely dry years of 2018 to 2020 – some massive losses of water, especially in the lakes of northern … occurred during the very dry and hot years of 2019 and 2020. For instance, in April 2018, the Groß Glienicker lake in Berlin went into decline with a level of 192 cm during the drought period. By October 2018, the level had dropped by more than half a metre to just above 140 cm. The …

  • Press release 07/2025 from 20.02.2025 | Last changed: 24.02.2025

    In 2024, all air quality limits met for the first time

    Stau

    … Download (123.34 kB) Stadtverkehr: Diesel-Autos stoßen das meiste NO2 aus - Anteil 2018 Source: Umweltbundesamt Download image (256.74 kB) Download (256.74 kB) …

  • KomPass: Article from 28.11.2023 | Last changed: 12.12.2024

    FW-I-5: Damaged timber – extent of random use

    The picture shows a dense spruce forest. Several trees are dead, and in the foreground there is deadwood lying on the forest floor.

    … the late winter of 1990. The volume of calamity timber recorded for the period of 2018 to September 2022 amounted to 245 million cubic metres solid. In recent years … free from relevant impacts caused by random use are becoming ever shorter. Up until 2018, the extremely high proportions of random use compared to the logging total … whilst the low-pressure related storm Burglind, right on the cusp between 2017 and 2018, as well as Friederike in mid-January, broke trees in the western and southern …

  • KomPass: Article from 28.11.2023 | Last changed: 12.12.2024

    FW-I-1: Tree species composition in forest nature reserves – case study

    The picture shows a near-natural forest with beech trees. In the foreground there is an uprooted tree lying on the ground.

    … by climate change. As far as the second and third observation periods from 2014 to 2018 and from 2019 to 2023 respectively are concerned, the direction of development … to greater tree mortality owing to drought years occurring more frequently since 2018. Whilst major fluctuations were observed regarding the proportions of pioneer … areas, the stand density had still increased distinctly in the period of 2014 to 2018. Associated content Documents FW-I-1 Indikator-Factsheet (233.08 kB) Tags ash …

  • KomPass: Article from 28.11.2023 | Last changed: 30.09.2024

    Cluster Trade and industry

    The picture shows a sectional view of a wooded landscape. There is an industrial estate visible in the distance, consisting of several buildings and facilities. There is smoke rising from some chimneys. The sky is densely cloud-covered. Above the horizon, the sky is tinged with yellow, with dark, greyish-blue clouds billowing at the margin of the picture. In a few lighter places, rays of the sun are penetrating the band of clouds.

    … on the intensity of heat stress – can in some cases fall by up to 12 %. For 2018 and 2019 it was estimated that – on the basis of this assumption – direct … subject to an unusually long phase of low-water levels in late summer and autumn 2018. Consequently, this led to draught restrictions having to be imposed on inland … limited extent, thus declining compared to 2017 by 11.1 % (cf. Indicator VE-I-2 ). 2018 witnessed the beginning of a prolonged drought period which impacted companies …

  • KomPass: Article from 28.11.2023 | Last changed: 18.11.2025

    WW-I-10: Water temperature of watercourses

    The picture shows a shallow, slow-flowing watercourse in sunny weather under a cloudless sky. Through the clear, reddish-brown shimmering water, the stony bed of the river is visible; some of the stones in the foreground project beyond the surface of the water. The banks are lined by mixed woodlands.

    … make any statements regarding long-term trends. The extremely high temperatures in 2018 and the associated lack of oxygen led to fish dying in many German water … of 7.2 °C was the coldest year in the decade of 1991–2000. The high values in 2018 and 2019 were due in part to high summer temperatures and low water levels. So … barbels it is 20 °C, and in the bream and chub-flounder regions it is 25 °C. 65 In 2018 these critical temperatures were exceeded in many locations. For instance, in …

  • KomPass: Article from 28.11.2023 | Last changed: 18.11.2025

    BAU-I-1 + 2: Heat stress in urban areas and summer heat island effect

    … by the areal mean for Germany as a whole. Especially in years such as 2015 and 2018 with above-average hot summer months, records show increased frequencies of … nationwide mean. In years with above-average hot summers, such as 2003, 2015 and 2018, the differences are particularly distinct. In 2018 the hitherto highest nationwide mean in Frankfurt am Main was exceeded more …

  • KomPass: Article from 28.11.2023 | Last changed: 17.12.2024

    VE-I-5: Impacts on roads due to weather conditions and weather patterns

    The picture shows the upper part of the tail end of a vehicle belonging to the highway maintenance service. The vehicle is orange and its rear doors are marked with the word ’Streckenwartung’ (track maintenance) and reflective red-and-white striped stickers. There are warning lights fitted to the vehicle.

    … patterns Highway maintenance services were extraordinarily busy in 2007, 2010, 2018 and 2021. In 2007 and 2010 the main task was to remedy the damage wrought by hurricanes Cyril and Xynthia respectively. In 2018 the impacts of storm, hailstones and heavy rain kept the highway maintenance … disasters was particularly high in the years 2007 and 2010, and latterly also in 2018 and 2021. In the first-mentioned decades, a large area of Germany was struck by …

  • KomPass: Article from 28.11.2023 | Last changed: 18.11.2025

    KM-I-4: Coastal morphology – case study

    The picture shows a light-brown cliffscape near Ahrenshoop on the Baltic Sea coast. At the foot of the cliff, you can see the sea and the spray of a wave. In one coastal section, you can see loose material and rock fragments which have been shifted from the cliff top to the bottom of the cliff.

    … the influence of storm surges on coastal decline: During the periods of 2017 / 2018 and 2018 / 2019 storm surges (some of them severe), caused partly severe erosion on the Fischland-Hochufer shore. In the autumn of 2018, east winds combined with major water volumes in the Baltic Sea, caused sea …

  • KomPass: Article from 28.11.2023 | Last changed: 17.12.2024

    BAU-I-3: Cooling degree days

    The picture shows the glass frontage of a house reflecting the sun. Some of the windows are part-shaded by means of external roller shutters.

    … (RW) Version 2017.002)/ BKG (DLM250) Increasing demands on summer heat protection 2018 and latterly 2022 have so far been the hottest years in Germany since meteorological records began. So far 2018 has been the only year in which more than 20 hot days were recorded when the … that, among other endeavours, and in view of the extraordinarily hot years of 2018, 2019 and finally 2022, and also in view of the GEG regulations to summer heat …