API src

Found 1990 results.

Related terms

Other language confidence: 0.5574965763609707

Verfahren zur kostenguenstigen Vermeidung und Verminderung von Aerosolen in Prozessen zur energetischen Nutzung von Biomassen und Abfaellen

Ziel des Verbundvorhabens ist die Entwicklung und Erprobung von Verfahrenskonzepten zur kostenguenstigen Vermeidung und Verminderung von Feinstpartikeln und Schadgasen in Prozessen zur energetischen Nutzung von Biomasse und Abfaellen. Das Vorhaben umfasst sowohl die Vermeidung der Aerosolbildung beim Verbrennungsprozess als auch die Verminderung von Schadstoffemissionen bei der Abgasreinigung. Im ersten Teil werden die Bildungs- und Umwandlungsmechanismen von Feinstpartikeln in Laborversuchen zur Verbrennung und Gasreinigung untersucht. Auf der Basis der experimentellen Daten werden bereits vorhandene Rechenmodelle weiterentwickelt. Diese Ergebnisse dienen zur Definition des optimalen Verfahrenskonzeptes, dessen wesentliche Schritte (Verbrennungsprozess und Aerosolabscheidung) im zweiten Teil des Vorhabens im Pilotmassstab an einer Holzfeuerungsanlage und einer Abfallverbrennungsanlage getestet werden. Unter Beruecksichtigung der Ergebnisse der anwendungsnahen Verfahrenstests werden die Rechenmodelle optimiert und die experimentellen Ergebnisse nachgerechnet. Die validierten Rechenmodelle dienen nach Abschluss des Vorhabens Anlagenbaufirmen zur Auslegung und zur Konstruktion der optimalen Verfahren zur Vermeidung und Verminderung von Aerosolen bei der energetischen Nutzung von Biomasse und Abfall.

WF 3200 Lokaler Immissionsschutzwald

Immissionsschutzwald mindert schädliche oder belästigende Einwirkungen von Stäuben, Aerosolen, Gasen oder Strahlungen sowie Lärm auf Wohn-, Arbeits- oder Erholungsbereiche oder andere schutzbedürftige Objekte durch Absorption, Ausfilterung oder Sedimentation, sowie durch Förderung von Thermik und Turbulenz. Er mindert die Schallausbreitung von Lärmquellen. Immissionsschutzwald ist definiert durch seine Lage zwischen Emittenten und einem zu schützenden Bereich. Immissionsschutzwald mindert schädliche oder belästigende Einwirkungen von Stäuben, Aerosolen, Gasen oder Strahlungen sowie Lärm auf Wohn-, Arbeits- oder Erholungsbereiche oder andere schutzbedürftige Objekte durch Absorption, Ausfilterung oder Sedimentation, sowie durch Förderung von Thermik und Turbulenz. Er mindert die Schallausbreitung von Lärmquellen. Immissionsschutzwald ist definiert durch seine Lage zwischen Emittenten und einem zu schützenden Bereich.

Aircraft measurements of single particle chemical composition over the Southern Baltic Sea during the BALTIC'15 campaign in 2015 (flight BalticSea_2015_1508280401)

Aircraft measurements of single particle chemical composition over the Southern Baltic Sea during the BALTIC'15 campaign in 2015 (flight BalticSea_2015_1508280502)

Aircraft measurements of single particle chemical composition over the Southern Baltic Sea during the BALTIC'15 campaign in 2015 (flight BalticSea_2015_1508260301)

Aircraft measurements of single particle chemical composition over the Southern Baltic Sea during the BALTIC'15 campaign in 2015 (flight BalticSea_2015_1508300601)

Sentinel-5P TROPOMI - Aerosol Single-Scattering Albedo (ASSA), Level 3 - Global

Aerosol single-scattering albedo (ASSA) as derived from TROPOMI observations. ASSA is a measure of how much light is scattered by aerosols compared to how much is absorbed. It is important for understanding the impact of aerosols on climate and radiative forcing. ASSA is unitless; a value of unity implies that extinction is completely due to scattering; conversely, a single-scattering albedo of zero implies that extinction is completely due to absorption. Daily ASSA observations are binned onto a regular latitude-longitude grid. The TROPOMI instrument onboard the Copernicus SENTINEL-5 Precursor satellite is a nadir-viewing, imaging spectrometer that provides global measurements of atmospheric properties and constituents on a daily basis. It is contributing to monitoring air quality and climate, providing critical information to services and decision makers. The instrument uses passive remote sensing techniques by measuring the top of atmosphere 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. The operational trace gas products generated at DLR on behave ESA are: Ozone (O3), Nitrogen Dioxide (NO2), Sulfur Dioxide (SO2), Formaldehyde (HCHO), Carbon Monoxide (CO) and Methane (CH4), together with clouds and aerosol properties. This product is created in the scope of the project INPULS. It develops (a) innovative retrieval algorithms and processors for the generation of value-added products from the atmospheric Copernicus missions Sentinel-5 Precursor, Sentinel-4, and Sentinel-5, (b) cloud-based (re)processing systems, (c) improved data discovery and access technologies as well as server-side analytics for the users, and (d) data visualization services.

Aircraft measurements of single particle chemical composition over the Southern Baltic Sea during the BALTIC'15 campaign in 2015

During the BALTIC'15 campaign in August 2015 over the Southern Baltic Sea, measurements of chemical composition and vacuum-aerodynamic diameter of individual aerosol particles were conducted by the Aircraft-based laser ablation aerosol mass spectrometer (ALABAMA) operated by the Max Planck Institute for Chemistry (Particle Chemistry Department). Measurements were performed on board the Alfred Wegener Institute research aircraft Polar 5. Four research flights were conducted: - Scientific flight 1 (SF1) on August 26, 2015 - Scientific flight 2 (SF2) on August 28, 2015 - Scientific flight 3 (SF3) on August 28, 2015 - Scientific flight 5 (SF4) on August 30, 2015. The data set contains sampling time, location, identified particle types, and particle size (if available). For detailed information on data processing and particle type characterization, please refer to the publication by Zanatta et al. (2019) or contact the authors: Franziska Köllner (f.koellner@mpic.de) and Johannes Schneider (Johannes.schneider@mpic.de).

METOP GOME-2 - Sulfur Dioxide (SO2) - Global

Gridded Level 3 SO2 total column densities derived from the Metop/GOME-2-instruments. Volcanoes are the largest soures of SO2 in the atmosphere, depending on the erruption the Sulfurous compounds can be injected into stratosphere but in most cases it stays within the troposphere. Another important source is the coal combustion. Desulfurisation facilities within the power stations have reduced the sulfur emissions around the globe. In the stratosphere sulfur is a key component for building up aerosols, which reflect parts of the solar irradiation. The total SO2 column is retrieved from GOME solar back-scattered measurements in the ultraviolet wavelength region [using the DOAS method]. Depending on the plume SO2 can be a very strong absorber, because of that the ODAS retrieval might have some smaller issues, they can be reduced by choosing different wavelenght ranges depending on the signal. We apply three different fitting windows between 310 and 360nm. For the AMF, we assume a plumeheight of 6 km altitude. The Global Ozone Monitoring Experiment-2 (GOME-2) instrument continues the long-term monitoring of atmospheric trace gas constituents started with GOME / ERS-2 and SCIAMACHY / Envisat. Three instruments operate on board EUMETSAT's Meteorological Operational satellites MetOp-A, -B, and -C, launched in 2006, 2012, and 2018, respectively. GOME-2 measures a range of atmospheric trace constituents, with the emphasis on global ozone distribution. Furthermore, cloud properties and intensities of ultraviolet radiation are retrieved. These data are crucial for monitoring the atmospheric composition and the detection of pollutants. DLR generates operational GOME-2 / MetOp products in the framework of EUMETSAT's Satellite Application Facility on Atmospheric Composition Monitoring (AC-SAF).

Collection of data sources for the Arctic CLoud Observations Using airborne measurements during polar Day (ACLOUD) campaign, North-West of Svalbard between 23 May - 26 June 2017

This data set unites the individual data of the Arctic CLoud Observations Using airborne measurements during polar Day (ACLOUD) campaign, which was carried out north-west of Svalbard (Norway) between 23 May and 6 June 2017. The objective of ACLOUD was to study Arctic boundary layer and mid-level clouds and their role in Arctic amplification. Two research aircraft (Polar 5 and 6) jointly performed 22 research flights over the transition zone between open ocean and closed sea ice. Both aircraft were equipped with identical instrumentation for measurements of basic meteorological parameters, as well as for turbulent and radiative energy fluxes. In addition, on Polar 5 active and passive remote sensing instruments were installed, while Polar 6 operated in situ instruments to characterize cloud and aerosol particles as well as trace gases.

1 2 3 4 5 … 197 198 199