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Ressortforschungsplan 2023, Mikroplastik in der Außenluft: Erfassung, Quantifizierung, Identifizierung und Quellen von luftgetragenem Mikroplastik

Mikroplastik (Partikel im µm Bereich) entsteht durch verschiedenste Prozesse, insbesondere jedoch durch Abrieb und Erosion von Plastik. Dabei ist ein Eintrag über den Wasser- und Bodenpfad mittlerweile unbestritten. Jedoch weiterhin ungeklärt ist der tatsächliche Eintrag über den Luftpfad. Zwar belegen Studien das Vorkommen von Mikroplastik an weitentfernten Orten und lassen auch den Schluss eines zumindest teilweisen Transportes über die Luft zu, aber wie hoch dieser Beitrag tatsächlich ist bleibt zurzeit ungeklärt. Darüber hinaus spielt die Identifikation der Polymere und somit die Erfassung der Quellbeiträge eine entscheidende Rolle. Ziel des Projektes ist es den luftgetragenen Eintrag von Mikroplastik und deren Quellen an Hintergrundstationen des Luftmessnetzes zu bestimmen. Dafür sollen an ausgewählten Messstationen des Luftmessnetzes des Umweltbundesamts (UBA) plastikfreie Niederschlagssammler sowie Vorrichtungen zur Feinstaubprobenahme installiert und über den Projektzeitraum repräsentativ PM10 Feinstaub- und Niederschlagsproben gesammelt und deren chemische Zusammensetzung analysiert werden. Zusätzlich sind Analysen von Niederschlagsproben zu Vergleichszwecken vorzusehen. In der Studie soll zudem die Ergebnisse statistisch (deskriptiv und beurteilend) ausgewertet und eine mögliche Quellenidentifikation über die Inhaltsstoffe erarbeitet werden.

Master tracks in different resolutions during POLAR 5 campaign P5-256_COMPEX-EC_2025

Raw data acquired by GPS1 position sensors on board research aircraft Polar 5 during the campaign P5-256_COMPEX-EC_2025 were processed to receive a validated master track which can be used as reference of further expedition data. Novatel FlexPak6 GPS receiver was used as navigation sensors during the campaign. Data were downloaded from AWI Datamanagement System (https://dms.awi.de) with a resolution of 1 sec. Processed data are provided as a master track with 1 sec resolution and a generalized track with a reduced set of the most significant positions of the master track. A detailed report on processing is also available for each flight.

Collection of data sets for the Clouds over cOMPlEX environment - EarthCARE (COMPEX-EC) campaign, carried out in Kiruna in spring 2025

This data collection unites the individual data sets of the COMPEX-EC (Clouds over cOMPlEX environment - EarthCARE) campaign, carried out in Kiruna 2.-16.4.2025. COMPEX-EC has been designed as an EarthCARE validation campaign. For that purpose, Polar 5 (C-GAWI) has been equipped with instrumentation similar to the one operated on EarthCARE (W-band radar, lidar, radiometers, spectral imagers). Seven research flights (summing up to more than 30 flight hours) were conducted each of them underflying the EarthCARE satellite to validate its performance.

HySpex - Level 2 Hyperspectral Images - Bohemian Forest

This collection contains airborne hyperspectral imagery acquired by the EOC user service OpAiRS. The data was recorded with the airborne DLR EnMAP simulator, which contains two HySpex cameras manufactured by the Norwegian Company NEO. The survey has been conducted within the scope of the “Data Pool Initiative for the Bohemian Forest Ecosystem”. It covers parts of the Bohemian forest, mainly the Bavarian Forest National Park. The data are made available as orthorectified ground reflectance. For more information concerning the airborne sensor system the reader is referred to: https://www.dlr.de/eoc/en/desktopdefault.aspx/tabid-11411/19998_read-46623/

Soil properties considering pH-values, total nitrogen and carbon content of soil samples, and soil type determination based on sand, silt, clay composition at the Hordorf (Central Germany) groundtruthing sites

The data set contains the results of laboratory examination of 13 soil samples taken at the ground truthing reference sites during the flight campaign.

Remote sensing event campaign with various optical and thermal sensors for soil moisture and evapotranspiration derivation in Central Germany investigating possible effects of different spatial scales

The heat waves and droughts of 2018 / 2019 and in 2020 have had a devastating impact on the functioning of ecosystems and have led to an increasing vulnerability beyond the duration of heat waves (e.g. degradation and increased erosion, reduced carbon uptake by vegetation, modulated energy balance). Such impacts also include loss of agricultural production. A better understanding of the progression and the consequences of heatwaves and droughts is essential for the development and improvement of adaptation and protection measures. The airborne remote sensing event campaign performed in the agricultural area of the 'Magdeburger Boerde' in Central Germany aimed at providing remote sensing data sets from different platforms to derive high quality data for improving the understanding of influences and lag effects on hydrologic, biological/biogeochemical and atmospheric processes induced by the summer drought 2020. Multiple recurrences of drought periods in previous years may have led to irreversible changes in structure, composition and functioning of terrestrial ecosystems reducing ecosystem services and resilience. A second goal of the campaign with different available sensors in terms of an inter-calibration is to provide comprehensive and reliable data to ensure future campaign inter-comparability. The acquired data set includes airborne remote sensing data covering variable land cover types obtained by optical, thermal and multispectral sensors (see supplementary material: Schulz et al. (2020), Milewski et al. (2021) ). Furthermore, extensive data from various ground-truthing activities are available such as field spectrometer measurements, soil temperature mapping and soil moisture mapping via Cosmic Ray rovering and TDR-measurements. To complete the data set, micrometeorological time series, soil samples and vegetation characteristics were also taken.

Collection of data sets for the MOSAiC Airborne observations in the Central Arctic (MOSAiC-ACA) campaign, carried out in late summer 2020 northwest of Svalbard

This data set unites the individual data of the MOSAiC Airborne observations in the Central Arctic (MOSAiC-ACA) campaign, carried out in late summer 2020 northwest of Svalbard (Norway). The objective of MOSAiC-ACA was to study turbulent fluxes of energy and momentum in the Arctic boundary layer and low- and mid-level mixed-phase clouds and their role in Arctic amplification in the exit area of the research vessel Polarstern during the MOSAiC expedition. The research aircraft Polar 5 was equipped with active and passive remote sensing instruments, measurements for turbulent and radiative energy fluxes, insitu probes for cloud and aerosol particles, and dropsondes. In total, 10 research flights with 44 flight hours over the open ocean and the marginal sea ice zone have been performed between 30 August and 13 September 2020.

Höheninformationen aus der Laserscanbefliegung der Stadt Braunschweig 2019

Im Februar 2019 fand u.a. über dem Stadtgebiet Braunschweig flächendeckend eine Laserscanbefliegung in Kooperation mit dem Landesamt für Geoinformation und Landesvermessung Niedersachsen (LGLN) und der Stadtentwässerung Braunschweig GmbH statt. Als Ergebnis liegen klassifizierte Höhenpunkte der Oberfläche mit einer Punktdichte von mehr als 8 Punkten/m² vor. Die Höhengenauigkeit der Messdaten/Einzelpunktkoordinaten beträgt ± 0,15m (Standardabweichung). Sie ist meist deutlich besser, wie terrestrische Vergleichsmessungen im Stadtgebiet ergaben. Die originären Rohmessdaten stehen als 3D-Punktwolke (unregelmäßig verteilte Einzelpunkte) im Format LAS/LAZ zur Verfügung. Eine Abgabe in weiteren Datenformaten sowie als ausgedünnte Punktdatensätze, interpoliert auf regelmäßige Punktgitter ist möglich. Auf Wunsch können individuell ausgeprägte Höhendarstellungen, wie z. B. Höhenlinien, digitale Geländemodelle (DGM) und digitale Oberflächenmodelle (DOM) als Datensatz oder Karte davon abgeleitet und angeboten werden.

NetCDF files containing raster layers of the Airborne SnowSAR observations, land cover (SCM) and elevation (DEM) over the Austrian ”AlpSAR” sites (Leutasch, Mittelbergferner and Rotmoos) in winter 2012-2013

NetCDF files containing raster layers of the Airborne SnowSAR observations, land cover (SCM) and elevation (DEM) over the Austrian ”AlpSAR” sites; Leutasch, Mittelbergferner and Rotmoos. The Airborne SnowSAR observations include the mean and the standard deviation of the X- and Ku-band backscatter (sigma nought) in VV- and VH-polarization, as well as the incidence angle in 10 m pixel size. The AlpSAR airborne data was collected in winter 2012-2013

ESRI shapefiles with manual snow depth (SD) measurements collected in Austria during winter 2012-2013

ESRI shapefiles with the manual snow depth (SD) measurements collected in Austria during winter 2012-2013.

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