A5025216255- Aeolian processes and effects
- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Geology and Paleoclimatology Research
- Air Quality Monitoring and Forecasting
- Geochemistry and Geologic Mapping
- Geological and Geophysical Studies Worldwide
- Soil erosion and sediment transport
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Ionosphere and magnetosphere dynamics
- Geochemistry and Elemental Analysis
- Transboundary Water Resource Management
- Planetary Science and Exploration
- Particle Dynamics in Fluid Flows
- Mine drainage and remediation techniques
- Waste Management and Environmental Impact
- Spectroscopy and Chemometric Analyses
- Space Exploration and Technology
- Heavy metals in environment
- Radioactivity and Radon Measurements
- Icing and De-icing Technologies
- Smart Materials for Construction
- Earthquake Detection and Analysis
Universitat Politècnica de Catalunya
2020-2025
Barcelona Supercomputing Center
2020-2025
Institute of Environmental Assessment and Water Research
2021-2024
Consejo Superior de Investigaciones Científicas
2024
Abstract. The chemical and morphological properties of mineral dust aerosols emitted by wind erosion from arid semi-arid regions influence climate, ocean, land ecosystems; air quality; multiple socio-economic sectors. However, there is an incomplete understanding the particle size distribution (PSD) in terms its constituent minerals that typically result fragmentation soil aggregates during erosion. PSD affects duration transport thus each mineral's global distribution, along with specific...
Abstract. A novel reference absorption instrument, based on photothermal interferometry – the PTAAM-2λ, and scattering measurements are used to characterize filter photometer artefacts in of coefficients soot dust-dominated aerosol samples within laboratory ambient campaigns. The Aethalometer AE33 Continuous Light Absorption Photometer (CLAP) were characterized during a campaign where different soot-like mineral dust measured. Furthermore, Granada, Spain, MAAP (Multi Angle Photometer),...
Abstract. Iceland is a major high-latitude dust source area. Airborne Icelandic influences the climate system via interacting with radiation, clouds, and biogeochemical systems, impacts snow/ice albedo, air quality. These are sensitive to its mineralogical, chemical, physical composition. However, comprehensive particle measurement analysis of still limited. This study examines samples collected during field campaign in Dyngjusandur desert (August–September 2021) using active passive aerosol...
Mineral dust is one of the key players in Earth’s atmosphere with respect to climate and atmospheric nutrient transport. Dust spans a large size range particle diameters, reaching from around 100 nm more than µm. While it has been assumed for long time that super-coarse (10 - 62.5 µm) giant (> particles are not widely dispersed sources, recent observations show they can travel on regional up even intercontinental scale. Owing negligence difficulty measurement,...
Mineral dust is one of the most prominent natural aerosols and almost ubiquitous in atmosphere, where it substantially interacts, modulates alter atmospheric processes. Although research on aerosol carried out since many decades by means different approaches techniques, knowledge mineral emitted at high latitudes or cold climate regions still limited despite its pivotal impact polar environments. Within a warming climate, from sources located zones expected to increase due retreat ice sheets...
Mineral dust is one of the most abundant types aerosol particles in atmosphere, playing a crucial role various atmospheric processes. A key interaction within clouds its ability to produce ice-nucleating (INPs), influencing cloud properties such as phase, lifetime, and water content. The efficiency mineral INPs depends on factors mineralogy, composition, particle size. This study investigates size mineralogy INP efficiency, contrasting Morocco Iceland, i.e. mid- high-latitude sources by...
With the decrease of electronic component prices, powerful yet low-cost optical particle counters (OPCs) gain in popularity and are frequently used citizen science as well classical projects. The application OPCs large numbers can yield higher spatial resolution and, thus, offers great opportunities for studies distribution development, e.g. dust or air pollution. As a consequence, sensor performance long-term accuracy must be evaluated order maintain data quality.During HiLDA campaign,...
Abstract. Characterising the physico-chemical properties of dust-emitting sediments in arid regions is fundamental to understanding effects dust on climate and ecosystems. However, knowledge regarding high-latitude (HLD) remains limited. This study focuses analysing particle size distribution (PSD), mineralogy, cohesion, iron (Fe) mode occurrence, visible–near infrared (VNIR) reflectance spectra from hotspots Iceland (HLD region). Extensive analysis was conducted samples top sediments,...
Abstract. Constraining dust models to understand and quantify the effect of upon climate ecosystems requires comprehensive analyses physiochemical properties dust-emitting sediments in arid regions. Building previous studies Moroccan Sahara Iceland, we analyse a diverse set crusts aeolian ripples (n=55) from various potential basins within Mojave Desert, California, USA. Our focus is on characterizing particle size distribution (PSD), mineralogy, aggregation/cohesion state, Fe mode...
Abstract. Mineral dust effects upon climate are strongly affected by its particle size distribution (PSD). In particular, the emitted PSD partly controls lifetime and global distribution. Despite extensive research performed on this topic over last decades, there still substantial gaps in our understanding of along with potential variability associated causes. study, we provide insights into saltation size-resolved emission process based measurements obtained during a comprehensive wind...
Abstract. The particle size distribution (PSD) of mineral dust has a strong effect on the impacts climate. However, our understanding emitted PSD, including its variability and fraction super-coarse (diameter >10 µm), remains limited. Here, we provide new insights into size-resolved emission process based field campaign performed in Moroccan Sahara September 2019 context FRontiers minerAloGical coMposition Effects upoN climaTe (FRAGMENT) project. obtained concentration diffusive flux PSDs...
Abstract A system for rapid analysis of spectroscopy data with emphasis on planetary surfaces, both imaging and single-spectrum data, is described. The system, called Tetracorder, commanded by an expert developed spectroscopists. Tetracorder the apply multiple algorithms to analyze a spectrum in segments, leveraging advantages each spectral region’s sensitivity detecting different compounds, whether solid, liquid, or gas. compare measured spectra properties materials libraries. libraries...
Abstract. The chemical and morphological properties of mineral dust aerosols emitted by wind erosion from arid semi-arid regions influence climate, ocean land ecosystems, air quality, multiple socio-economic sectors. However, there is an incomplete understanding the particle size distribution (PSD) in terms its constituent minerals that typically result fragmentation soil aggregates during erosion. PSD affects duration transport thus each mineral’s global distribution, along with specific...
Abstract. The effects of desert dust upon climate and ecosystems depend strongly on its particle size size-resolved mineralogical composition. However, there is very limited quantitative knowledge the composition parent sediments along with their variability within dust-source regions, particularly in emission hotspots. lower Drâa Valley, an inland drainage basin hotspot region located Moroccan Sahara, was chosen for a comprehensive analysis sediment mineralogy. Different type samples (n=...
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Abstract. Characterizing physico-chemical properties of dust-emitting sediments in arid regions is fundamental to understand the effect dust on climate and ecosystems. For high-latitude (HLD), this knowledge scarce. This study focuses particle size distribution (PSD), mineralogy, cohesion, iron (Fe) mode occurrence Visible Near Infra-Red (VNIR) reflectance spectra from dust-hotspots Iceland (HLD region). Extensive analysis was conducted top collected seven dust-sources an intensive at...
Abstract. Understanding the effect of dust upon climate and ecosystems needs comprehensive analyses physiochemical properties dust-emitting sediments in arid regions. Here, we analyse a diverse set crusts aeolian ripples (n=55) from various dust-hotspots within Mojave Desert, California, USA, with focus on their particle size distribution (PSD), mineralogy, aggregation/cohesion state iron mode occurrence characterization. Our results showed differences fully minimally dispersed PSDs, average...
Mineral dust is considered one of the most important seeds for heterogeneous ice nucleation in clouds. In past decades, several studies have worked on establishing a relationship between mineral dust, number concentration, temperature, supersaturation, and crystals. The explored particle-size range was usually limited to few micrometers two main reasons: (1) larger heavier particles are difficult keep suspended an experimental setting; (2) fraction coarser aerosol negligible. However, recent...
Gaining a precise understanding of the particle size distribution (PSD) mineral dust at emission is critical to assess its climate impacts. Despite importance, comprehensive measurements sources remain scarce and usually neglect part super-coarse (particle diameter d between 10 62.5 μm) entire giant (d > ranges. Measurements in those ranges are particularly challenging due expected relatively low number concentrations sampling efficiencies instrument inlets. This study aims...
Aerosol absorption coefficient measurements classically feature a very large uncertainty, especially given the absence of reference method. The most used approach using filter-photometers is by measuring attenuation light through filter where aerosols are being deposited. This presents several artifacts, with cross-sensitivity to scattering important at high single albedo error exceeding 100%. We present lab campaign results we have resuspended dust samples from different...