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Harbour and grey seal counts in the Elbe Estuary, Germany, between Wedel and Scharhörn in 2023/2024

Aerial surveys were conducted in the Elbe Estuary, Germany, to count seals on their haul-out sites. Haul-out sites were located within the intertidal zone, usually close to the waterway or tidal creeks. The north-western border of the study area was located at the approximate river-km 753 (island of Scharhörn) and the south-eastern border was located at river-km 632 (Mühlenberger Loch). Flights were performed monthly from August 2023 until July 2024 (11 flights in total) at low tide. Within each month, a flight date in the middle of the month was chosen, depending on the tide and weather conditions. The flight scheduled for December 2023 had to be canceled due to persistently unfavorable weather conditions. Flights were performed with a twin-engined aircraft at a height of approximately 500 feet and at an average speed of 100 knots. The flight routes were tracked via GPS. Sighted seals were photographed on their haul-out sites and the corresponding geographic position was recorded. In the office, the photos were used to identify the species and age class, and count the animals.

Spatial distribution of aerosol and meteorological parameters measured during flight SourceFFR_ALADINA_20241017_15 with the UAS ALADINA near Frankfurt airport in October 2024

Exposure to ultrafine aerosol particles (UFPs) can cause adverse effects on human health, local environment and climate. Air traffic is associated with the emission of high numbers of UFPs, which results in increased UFP number concentrations close to airports. So far, the spatial distribution and variability of UFPs is poorly understood in the atmospheric boundary layer. The uncrewed aerial system (UAS) ALADINA (Application of Lightweight Aircraft for Detecting In-situ Aerosols, e.g. Altstädter et al., 2015) was operated close to the largest airport in Germany at Frankfurt airport (FRA) between 11 and 19 October 2024. The dataset provides airborne in-situ observations of the spatial distribution of aerosol particle number concentration with different sizes and meteorological parameters of temperature, humidity, wind, surface temperature and short-wave irradiance, as well as accurate position and orientation of ALADINA. Data are available from 26 measurement flights, comprising a number of 122 vertical profiles between ground and a maximum altitude of 750 m above mean sea level (ASL) and about 70 horizontal legs at different but constant altitude, e.g. in 100 m altitude intervals. Details about the ALADINA measurements will be provided in a publication (Harm-Altstädter et al., in prep.) soon.

Spatial distribution of aerosol and meteorological parameters measured during flight SourceFFR_ALADINA_20241016_13 with the UAS ALADINA near Frankfurt airport in October 2024

Exposure to ultrafine aerosol particles (UFPs) can cause adverse effects on human health, local environment and climate. Air traffic is associated with the emission of high numbers of UFPs, which results in increased UFP number concentrations close to airports. So far, the spatial distribution and variability of UFPs is poorly understood in the atmospheric boundary layer. The uncrewed aerial system (UAS) ALADINA (Application of Lightweight Aircraft for Detecting In-situ Aerosols, e.g. Altstädter et al., 2015) was operated close to the largest airport in Germany at Frankfurt airport (FRA) between 11 and 19 October 2024. The dataset provides airborne in-situ observations of the spatial distribution of aerosol particle number concentration with different sizes and meteorological parameters of temperature, humidity, wind, surface temperature and short-wave irradiance, as well as accurate position and orientation of ALADINA. Data are available from 26 measurement flights, comprising a number of 122 vertical profiles between ground and a maximum altitude of 750 m above mean sea level (ASL) and about 70 horizontal legs at different but constant altitude, e.g. in 100 m altitude intervals. Details about the ALADINA measurements will be provided in a publication (Harm-Altstädter et al., in prep.) soon.

High resolution aircraft measurements of wind and temperature during the MOSAIC-ACA campaign in 2020

During the MOSAiC-ACA campaign conducted in August/September 2020 in Svalbard meteorological data (temperature, 3 wind components, air pressure) have been measured in high temporal resolution (100 Hz) using instrumentation that was installed at the nosebooms of Polar 5. For each flight the data are given as functions of time and position (including height above ground) along the flight tracks. All flights started and ended in Longyearbyen, Svalbard. Each file represents an entire flight starting well before the first movement of the plane and ending after the final parking position has been reached after landing. The wind measurement is only valid during flight and the full accuracy is only achieved during straight level flight sections. The absolute accuracy of the wind components is 0.2m/s for straight and level flights sections and the relative accuracy of the vertical wind speed is about 0.05m/s for straight and level flight sections. For these sections, which can be obtained on the basis of the given roll and pitch angles of the aircraft, the 100 Hz data can be used to derive turbulent fluxes of momentum and sensible heat. For further informations on the data processing and accuracy of the turbulence measurement refer to Hartmann et al. (2018, doi:10.5194/amt-11-4567-2018).

GTS Bulletin: UAOS81 LOXA - Upper air data (details are described in the abstract)

The UAOS81 TTAAii Data Designators decode as: T1 (U): Upper air data T1T2 (UA): Aircraft reports A1A2 (OS): Austria T1T2ii (UA81): Reserved for future use (Remarks from Volume-C: NilReason)

GTS Bulletin: UATU60 LTAC - Upper air data (details are described in the abstract)

The UATU60 TTAAii Data Designators decode as: T1 (U): Upper air data T1T2 (UA): Aircraft reports A1A2 (TU): Turkey T1T2ii (UA60): Special aircraft reports, except for volcanic ash (Remarks from Volume-C: NilReason)

GTS Bulletin: UAGL71 BGSF - Upper air data (details are described in the abstract)

The UAGL71 TTAAii Data Designators decode as: T1 (U): Upper air data T1T2 (UA): Aircraft reports A1A2 (GL): Greenland T1T2ii (UA71): Special aircraft reports, related to volcanic ash (Remarks from Volume-C: NilReason)

GTS Bulletin: UADL61 EDZO - Upper air data (details are described in the abstract)

The UADL61 TTAAii Data Designators decode as: T1 (U): Upper air data T1T2 (UA): Aircraft reports A1A2 (DL): Germany T1T2ii (UA61): Special aircraft reports, except for volcanic ash (The bulletin collects reports from stations: EDZO;) (Remarks from Volume-C: SPECIAL AIREP)

Unbemannte Luftfahrzeuge zur Erfassung von Habitat-Präferenzen und Aktionsraumdichten von Zauneidechsen (Lacerta agilis LINNAEUS, 1758) zur hochauflösenden Landschaftsplanung

Das Erstellen eines möglichst kompletten Ökologischen Profils einer Population ist von entscheidender Bedeutung in Naturschutz und Landschaftsplanung. Die Zauneidechse (Lacerta agilis LINNAEUS, 1758) ist weit verbreitet in Eurasien und bevorzugt offene bis halboffene Lebensräume. Hierzu gehören auch Habitate, die in der unmittelbaren Nähe von Menschen liegen wie Straßenränder, Bahntrassen oder Steinbrüche. Die Art ist daher oftmals Opfer von Störung, Zerstörung oder Fragmentierung ihrer Lebensräume durch menschliche Aktivitäten und daher oftmals das Ziel von Ausgleichsmaßnahmen. Diese sind am effektivsten, wenn sie auf die Ökologie der betroffenen Population abgestimmt sind. Ziel dieses Projektes ist daher das Erstellen einer möglichst effizienten Methode zur Ermittlung der Ökologie von Kleintieren am Beispiel einer Zauneidechsen-Population in der Dellbrücker Heide in Köln. Hierzu werden klassische Sichtungs basierte Begehungen mit Radio-Teleme-trie zur Aktionsraumbestimmung und hoch-auflösende Drohnenaufnahmen zur Habitatbestimmung verbunden, um ein möglichst vollständiges ökologisches Profil zu erhalten. Das Profil beinhaltet: Aktivität der Tiere in Bezug auf Wetter und Temperatur, Aktionsraumdichte und Habitatpräferenzen. Zusätzlich ist geplant, in Zusammenarbeit mit der Deutschen Bahn die Möglichkeit zu untersuchen, Eidechsenbestände direkt per Drohne aufzunehmen. Das Projekt beinhaltet bisher eine laufende Doktorarbeit (Vic Clement) sowie zwei abgeschlossene Master-Arbeiten zu Wetter abhängiger Aktivität (Julia Platzen-Edanakaparampil) und Habitatpräferenz (Rieke Schluckebier). Derzeit geplant sind ebenfalls zwei weitere Masterarbeiten zur Habitatpräferenz und zum Einfluss einer Drohne auf das Fluchtverhalten der Tiere (Lisa Schmitz und Tobias Demand).

Entwicklung keramikähnlicher Leiterisolationen für den Einsatz in hochausgenutzten, ressourceneffizienten elektrischen Maschinen und Antrieben, Teilvorhaben: Skalierung der elektrochemischen Oxidation zur Herstellung von Isolationsschichen auf Leiterkomponenten elektrischer Maschinen

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