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View article: Quantifying the detachment dynamics of microplastic car tire-wear particles using a deep learning framework in a laboratory wind tunnel.
Quantifying the detachment dynamics of microplastic car tire-wear particles using a deep learning framework in a laboratory wind tunnel. Open
Traffic-related microscale particles, including passenger car tire-wear particles (PCTWPs), are recognised as one of the primary sources of microplastic pollution. While the chemical composition, shape characterisation, and emission rates …
View article: Climate sensitive designs for policy makers: how well can LES models represent urban microclimates?
Climate sensitive designs for policy makers: how well can LES models represent urban microclimates? Open
Cities can offer an extraordinarily high or low urban level of climatic stressors depending on their location and topographical setting, infrastructural geometry and anthropogenic activities. To protect human well-being today and in the fu…
View article: Transport and emissions of gaseous air pollutants in a high-traffic urban street canyon
Transport and emissions of gaseous air pollutants in a high-traffic urban street canyon Open
Urban air quality directly determines urban quality of life. To improve it, we need to know about local emissions, chemical transformations, and transport processes of the energy-containing vortices in the air. The combination of high-reso…
View article: Is plastic dust different from mineral dust? Results from idealized wind tunnel experiments.
Is plastic dust different from mineral dust? Results from idealized wind tunnel experiments. Open
Atmospheric transport has been shown to effectively disperse microplasticparticulate matter to virtually every environment on the planet. Despite thisefficient long-range transport, only few studies have examined the fundamentalmechanisms …
View article: Simulating an extreme heat event in a mid-sized city in Europe: validating and analyzing the relevance of spatial resolution in the urban LES model PALM4U with an observation network
Simulating an extreme heat event in a mid-sized city in Europe: validating and analyzing the relevance of spatial resolution in the urban LES model PALM4U with an observation network Open
Urban areas are known to be exposed to higher temperatures than rural areas making urban citizens particularly vulnerable to extreme heat events. Large eddy simulation (LES) models can simulate micrometeorological heat transport and mixing…
View article: Is plastic dust different from mineral dust? Results from idealized wind tunnel experiments
Is plastic dust different from mineral dust? Results from idealized wind tunnel experiments Open
Atmospheric transport has been shown to effectively disperse microplastic particulate matter to virtually every environment on the planet. Despite this efficient long-range transport, only few studies have examined the fundamental mechanis…
View article: Investigating the impact of topography on the stable boundary layer structure over complex terrain using Large eddy simulations
Investigating the impact of topography on the stable boundary layer structure over complex terrain using Large eddy simulations Open
<p><strong>Abstract:</strong> Large eddy simulations (LES) are performed to better understand the airflow, structure, and mixing processes in the stable boundary layer (SBL) in the bottom of a mid-range mountain valley, F…
View article: Quantitative detection of aerial suspension of particles with a full-frame visual camera for atmospheric wind tunnel studies
Quantitative detection of aerial suspension of particles with a full-frame visual camera for atmospheric wind tunnel studies Open
Aerial suspension is an important process to link potential sources of particles to atmospheric transport. For contaminants like radioactive particles, pesticides or spores aerial suspension is especially relevant. We present a method that…
View article: The Large eddy Observatory, Voitsumra Experiment 2019 (LOVE19) with high-resolution, spatially distributed observations of air temperature, wind speed, and wind direction from fiber-optic distributed sensing, towers, and ground-based remote sensing
The Large eddy Observatory, Voitsumra Experiment 2019 (LOVE19) with high-resolution, spatially distributed observations of air temperature, wind speed, and wind direction from fiber-optic distributed sensing, towers, and ground-based remote sensing Open
The weak-wind stable boundary layer (wwSBL) is poorly described by theory and breaks basic assumptions necessary for observations of turbulence. Understanding the wwSBL requires distributed observations capable of separating between sub-me…
View article: Fieldbuses, Communication Protocols, User Interfaces, Hardware ASICs
Fieldbuses, Communication Protocols, User Interfaces, Hardware ASICs Open
After we have dealt in detail with the five different levels of the automation pyramid, this chapter explains the communication structures and networking topologies within the automation pyramid. The fieldbus distribution for the year 2020…
View article: Comment on essd-2020-392
Comment on essd-2020-392 Open
Abstract. The weak-wind stable boundary layer (wwSBL) is poorly described by theory and breaks basic assumptions necessary for observations of turbulence. Understanding the wwSBL requires distributed observations capable of separating betw…
View article: The Large-eddy Observatory Voitsumra Experiment 2019(LOVE19) with high-resolution, spatially-distributed observations ofair temperature, wind speed, and wind direction from fiber-opticdistributed sensing, towers, and ground-based remote sensing
The Large-eddy Observatory Voitsumra Experiment 2019(LOVE19) with high-resolution, spatially-distributed observations ofair temperature, wind speed, and wind direction from fiber-opticdistributed sensing, towers, and ground-based remote sensing Open
The weak-wind Stable Boundary Layer (wwSBL) is poorly described by theory and breaks basic assumptions necessary for observations of turbulence. Understanding the wwSBL requires distributed observations capable of separating between submes…
View article: Selected breakpoints of net forest carbon uptake at four eddy-covariance sites
Selected breakpoints of net forest carbon uptake at four eddy-covariance sites Open
Extensive studies are available that analyse time series of carbon dioxide and water flux measurements of FLUXNET sites over many years and link these results to climate change such as changes in atmospheric carbon dioxide concentration, a…
View article: Large-eddy Observatory, Voitsumra Experiment 2019 (LOVE19)
Large-eddy Observatory, Voitsumra Experiment 2019 (LOVE19) Open
The weak-wind Stable Boundary Layer (wwSBL) is poorly described by theory and breaks basic assumptions necessary for observations of turbulence. Understanding the wwSBL requires distributed observations capable of separating between submes…
View article: Large-eddy Observatory, Voitsumra Experiment 2019 (LOVE19)
Large-eddy Observatory, Voitsumra Experiment 2019 (LOVE19) Open
The weak-wind Stable Boundary Layer (wwSBL) is poorly described by theory and breaks basic assumptions necessary for observations of turbulence. Understanding the wwSBL requires distributed observations capable of separating between submes…
View article: Possible errors in flux measurements due to limited digitalization
Possible errors in flux measurements due to limited digitalization Open
Recently reported trends of carbon dioxide uptake pose the question of whether trends may be the result of the limited digitalization of gas analysers and sonic anemometers used in the 1990s. Modifying a 12 bit digitalization and the instr…
View article: The Kobresia pygmaea ecosystem of the Tibetan highlands – Origin, functioning and degradation of the world's largest pastoral alpine ecosystem
The Kobresia pygmaea ecosystem of the Tibetan highlands – Origin, functioning and degradation of the world's largest pastoral alpine ecosystem Open
With 450,000 km2Kobresia (syn. Carex) pygmaea dominated pastures in the eastern Tibetan highlands are the world's largest pastoral alpine ecosystem forming a durable turf cover at 3000-6000 m a.s.l. Kobresia's resilience and competitivenes…
View article: Technical Note: Possible errors in flux measurements due to limited digitalization
Technical Note: Possible errors in flux measurements due to limited digitalization Open
Recently reported trends of carbon dioxide uptakes pose the question if trends may results of the digitalization of gas analysers and sonic anemometers used in the 1990s. Simulating a 12-bit digitalization and the instrument error reported…
View article: Footprint-weighted tile approach for a spruce forest and a nearby patchy clearing using the ACASA model
Footprint-weighted tile approach for a spruce forest and a nearby patchy clearing using the ACASA model Open
The ACASA (Advanced Canopy–Atmosphere–Soil Algorithm) model, with a higher-order closure for tall vegetation, has already been successfully tested and validated for homogeneous spruce forests. The aim of this paper is to test the model usi…
View article: Application of the ACASA model for a spruce forest and a nearby patchy clearing
Application of the ACASA model for a spruce forest and a nearby patchy clearing Open
The ACASA (Advanced Canopy-Atmosphere-Soil Algorithm) model, with a higher order closure for tall vegetation, has already been successfully tested and validated for spruce forests. The aim of this paper is the further application for a cle…
View article: The<i>Kobresia pygmaea</i>ecosystem of the Tibetan highlands – origin, functioning and degradation of the world’s largest pastoral alpine ecosystem
The<i>Kobresia pygmaea</i>ecosystem of the Tibetan highlands – origin, functioning and degradation of the world’s largest pastoral alpine ecosystem Open
Kobresia pastures in the eastern Tibetan highlands occupy 450000 km 2 and form the world’s largest pastoral alpine ecosystem. The main constituent is an endemic dwarf sedge, Kobresia pygmaea , which forms a lawn with a durable turf cover a…
View article: Trends in long-term carbon and water fluxes - a case study from a temperate Norway spruce site
Trends in long-term carbon and water fluxes - a case study from a temperate Norway spruce site Open
In this study we analyse eddy-covariance flux measurements of carbon dioxide and water vapour from 18 years at\nWaldstein-Weidenbrunnen (DE-Bay), a Norway spruce forest site in the Fichtelgebirge, Germany. Standard flux\npartitioning algor…
View article: High-resolution modelling of interactions between soil moisture and convective development in a mountain enclosed Tibetan Basin
High-resolution modelling of interactions between soil moisture and convective development in a mountain enclosed Tibetan Basin Open
The Tibetan Plateau plays a significant role in atmospheric circulation and the Asian monsoon system. Turbulent surface fluxes and the evolution of boundary-layer clouds to deep and moist convection provide a feedback system that modifies …
View article: High-resolution modelling of interactions between soil moisture and convection development in mountain enclosed Tibetan basin
High-resolution modelling of interactions between soil moisture and convection development in mountain enclosed Tibetan basin Open
The Tibetan Plateau plays a significant role in the atmospheric circulation and the Asian monsoon system. Turbulent surface fluxes and the evolution of boundary layer clouds to deep and moist convection provide a feedback system that modif…