API src

Found 1280 results.

Related terms

Solar Radiation Modification (SRM)

Solar Radiation Modification (SRM) can neither conserve the current nor restore the pre-industrial climate. It would create an unpredictable new global climate with significant regional impacts. This brochure explains the risks of SRM for food security, justice and actual climate action. It explains the various SRM approaches and how they are supposed to work. It also describes the state of regulation and formulates conditions for responsible governance, including a non-use agreement. Veröffentlicht in Broschüren.

Digitalisation and Sustainability in the European Union: Steps towards new governance approaches for a twin transition

With the 'twin transition', the European Union aims to combine digitalisation and sustainability in order to achieve the United Nations Sustainable Development Goals. The research project "Digitalisation and sustainability at EU level" examined the opportunities and risks of digitalisation for the implementation of the 2030 Agenda for Sustainable Development. The analysis showed that these two topics are often not integrated. Recommendations were developed for digital circular economy, sufficiency and environmental justice. The research findings suggest that environmental and social justice should be at the forefront of future efforts to promote a sustainable digital future. Veröffentlicht in Texte | 35/2025.

Analysis of Polyquaternium Compounds in Environmental Samples through Non-Target Screening

Polyquaternium (PQ) compounds are water soluble polymers which are widely used in high volumes, e.g. in body care products. They are assumed to be persistent in the environment and to be toxic to aquatic organisms. Information on their occurrence and environmental concentrations is essential to assess the risk these chemicals may pose and determine if regulatory action is required. In this study it was assessed if PQs can be retrospectively analyzed in non-target screening data, which was deemed unfeasible. Instead, an analytical method for PQ-compounds was developed. With this method, PQ compounds could be detected in surface water samples at seemingly high concentrations.

Sentinel-5P TROPOMI – Ozone (O3), Level 3 – Global

Ozone vertical column density in Dobson Units as derived from Sentinel-5P/TROPOMI observations. The stratospheric ozone layer protects the biosphere from harmful solar ultraviolet radiation. Ozone in troposphere can pose risks to the health of humans, animals, and vegetation. The TROPOMI instrument aboard the SENTINEL-5P space craft is a nadir-viewing, imaging spectrometer covering wavelength bands between the ultraviolet and the shortwave infra-red. TROPOMI's purpose is to measure atmospheric properties and constituents. It is contributing to monitoring air quality and providing critical information to services and decision makers. The instrument uses passive remote sensing techniques by measuring the Top Of Atmosphere (TOA) solar radiation reflected by and radiated from the earth and its atmosphere. The four spectrometers of TROPOMI cover the ultraviolet (UV), visible (VIS), Near Infra-Red (NIR) and Short Wavelength Infra-Red (SWIR) domains of the electromagnetic spectrum, allowing operational retrieval of the following trace gas constituents: Ozone (O3), Nitrogen Dioxide (NO2), Sulfur Dioxide (SO2), Formaldehyde (HCHO), Carbon Monoxide (CO) and Methane (CH4). Daily observations are binned onto a regular latitude-longitude grid. Within the INPULS project, innovative algorithms and processors for the generation of Level 3 and Level 4 products, improved data discovery and access technologies as well as server-side analytics for the users are developed.

WMS HWRM-Karten 1.Zyklus Hamburg

Dieser Web Map Service (WMS), Risikogebiete Hochwasserrisikomanagement, stellt flächenhaft die Risikogebiete in Gefahren- und Risikokarten dar. Zur genaueren Beschreibung der Daten und Datenverantwortung nutzen Sie bitte den Verweis zur Datensatzbeschreibung.

WFS HWRM-Karten 1.Zyklus Hamburg

Dieser Web Feature Service (WFS), Risikogebiete Hochwasserrisikomanagement, stellt flächenhaft die Risikogebiete in Gefahren- und Risikokarten zum Downloaden bereit. Zur genaueren Beschreibung der Daten und Datenverantwortung nutzen Sie bitte den Verweis zur Datensatzbeschreibung.

ABAG: C-Faktor (Fruchtfolge 2016-2019)

Der Bodenbedeckungsfaktor ist als Bestandteil der Allgemeinen Bodenabtragsgleichung ein Maß für den Einfluss der erosionsmindernden Wirkung einer Vegetationsbedeckung gegenüber einer Schwarzbrache (C-Faktor = 1). Je niedriger der C-Faktor, desto größer ist die erosionsmindernde Wirkung der Vegetationsbedeckung.

ABAG: R-Faktor

Der Regenerosivitätsfaktor ist als Bestandteil der Allgemeinen Bodenabtragsgleichung ein Maß für die gebietsspezifische Erosionswirksamkeit der Niederschläge. Je höher der R-Faktor, desto höher ist die Erosionswirksamkeit der Niederschläge.

Flood risk in a changing climate (CEDIM)

Aims: Floods in small and medium-sized river catchments have often been a focus of attention in the past. In contrast to large rivers like the Rhine, the Elbe or the Danube, discharge can increase very rapidly in such catchments; we are thus confronted with a high damage potential combined with almost no time for advance warning. Since the heavy precipitation events causing such floods are often spatially very limited, they are difficult to forecast; long-term provision is therefore an important task, which makes it necessary to identify vulnerable regions and to develop prevention measures. For that purpose, one needs to know how the frequency and the intensity of floods will develop in the future, especially in the near future, i.e. the next few decades. Besides providing such prognoses, an important goal of this project was also to quantify their uncertainty. Method: These questions were studied by a team of meteorologists and hydrologists from KIT and GFZ. They simulated the natural chain 'large-scale weather - regional precipitation - catchment discharge' by a model chain 'global climate model (GCM) - regional climate model (RCM) - hydrological model (HM)'. As a novel feature, we performed so-called ensemble simulations in order to estimate the range of possible results, i.e. the uncertainty: we used two GCMs with different realizations, two RCMs and three HMs. The ensemble method, which is quite standard in physics, engineering and recently also in weather forecasting has hitherto rarely been used in regional climate modeling due to the very high computational demands. In our study, the demand was even higher due to the high spatial resolution (7 km by 7 km) we used; presently, regional studies use considerably larger grid boxes of about 100 km2. However, our study shows that a high resolution is necessary for a realistic simulation of the small-scale rainfall patterns and intensities. This combination of high resolution and an ensemble using results from global, regional and hydrological models is unique. Results: By way of example, we considered the low-mountain range rivers Mulde and Ruhr and the more alpine Ammer river in this study, all of which had severe flood events in the past. Our study confirms that heavy precipitation events will occur more frequently in the future. Does this also entail an increased flood risk? Our results indicate that in any case, the risk will not decrease. However, each catchment reacts differently, and different models may produce different precipitation and runoff regimes, emphasizing the need of ensemble studies. A statistically significant increase of floods is expected for the river Ruhr in winter and in summer. For the river Mulde, we observe a slight increase of floods during summer and autumn, and for the river Ammer a slight decrease in summer and a slight increase in winter.

Staub - Spiegel der Umwelt - Eine Public Science Ausstellung im Wissenschaftszentrum Umwelt

Täglich sammeln wir Staub - wenn wir uns in einem Raum aufhalten, wenn wir durch eine Wiese oder über eine Straße gehen oder auch in einem Buch lesen - und täglich versuchen wir, ihn wieder loszuwerden. Unser Drang nach Reinheit hat eine ganze Industrie entstehen lassen, die von Staubsaugern bis zu High-Tech-Filtern alle Arten von kleinen und größeren Hilfsmitteln anbietet. Für die Wissenschaft ist Staub kein Dreck. Was für den Alltagsmenschen ein Symbol der Zerstörung ist, birgt für den Forscher viele wichtige Informationen. Denn aus einer Analyse des Staubes lässt sich vieles über unsere gegenwärtige und sogar über vergangene Umwelten lernen. Zum anderen erobert die Wissenschaft mit Mikro- und Nanotechnologien die Welt des Winzigen. Denn das sehr Kleine eröffnet besondere technische Chancen. Auch diese aktuellen Entwicklungen und die damit verbundenen Chancen und Risiken soll die Ausstellung aufzeigen. Die Ausstellung wurde von November 2004 bis Oktober 2005 im Wissenschaftszentrum Umwelt der Universität Augsburg gezeigt werden. Sie umfasst 30-40 Exponate, darunter mehrere Hands-on-Exponate. Leihgeber für spezielle Objekte sind das Bundeskriminalamt, das Landesamt für Umweltschutz in Bayern, das Umweltbundesamt, der Deutsche Wetterdienst und weitere Institutionen. Ein ausstellungsbegleitendes Buch wird beim Oekom Verlag in München erscheinen. Im Anschluss an die Augsburger Station ging die Ausstellung auf Wanderschaft und wurde inzwischen an sechs weiteren Stationen gezeigt. Die Zahl der Besucher liegt bereits weit über 100.000.

1 2 3 4 5 … 126 127 128