Antonio Spanu
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View article: Efficient and scalable training set generation for automated pollen monitoring with Hirst-type samplers
Efficient and scalable training set generation for automated pollen monitoring with Hirst-type samplers Open
Automated pollen detection is essential for ecological monitoring, allergy forecasting, and biodiversity research. However, existing methods rely heavily on manual or semi-automated annotations, limiting scalability and broader applicabili…
View article: Polarization Optics to Differentiate Among Bioaerosols for Lidar Applications
Polarization Optics to Differentiate Among Bioaerosols for Lidar Applications Open
Polarization optics, which characterize the orientation of the electromagnetic field through Stokes vectors formalism, have been effectively used in lidar remote sensing to detect particles that differ in shape, such as mineral dust or pol…
View article: Flow-induced errors in airborne in situ measurements of aerosols and clouds
Flow-induced errors in airborne in situ measurements of aerosols and clouds Open
Aerosols and clouds affect atmospheric radiative processes and climate in many complex ways and still pose the largest uncertainty in current estimates of the Earth's changing energy budget. Airborne in situ sensors such as the Cloud, Aero…
View article: ATom: In-Situ Measurements of Airflow and Aerosols from Multiple Airborne Campaigns
ATom: In-Situ Measurements of Airflow and Aerosols from Multiple Airborne Campaigns Open
This dataset provides results of selected in-situ measurements of airflow and aerosol particles collected during the following airborne campaigns: NASA Atmospheric Tomography (ATom), Saharan Aerosol Long-range Transport and Aerosol-Cloud-i…
View article: Flow-induced errors in airborne in-situ measurements of aerosols and clouds
Flow-induced errors in airborne in-situ measurements of aerosols and clouds Open
Aerosols and clouds affect atmospheric radiative processes and climate in many complex ways and still pose the largest uncertainty in current estimates of the Earth’s changing energy budget. Airborne in-situ sensors such as the Cloud, Aero…
View article: Aerosol characteristics and particle production in the upper troposphere over the Amazon Basin
Aerosol characteristics and particle production in the upper troposphere over the Amazon Basin Open
Airborne observations over the Amazon Basin showed high aerosol particle concentrations in the upper troposphere (UT) between 8 and 15 km altitude, with number densities (normalized to standard temperature and pressure) often exceeding tho…
View article: On the parametrization of optical particle counter response including instrument-induced broadening of size spectra and a self-consistent evaluation of calibration measurements
On the parametrization of optical particle counter response including instrument-induced broadening of size spectra and a self-consistent evaluation of calibration measurements Open
Optical particle counters (OPCs) are common tools for the in situ measurement of aerosol particle number size distributions. As the actual quantity measured by OPCs is the intensity of light scattered by individual particles, it is necessa…
View article: Aerosol characteristics and particle production in the upper troposphere over the Amazon Basin
Aerosol characteristics and particle production in the upper troposphere over the Amazon Basin Open
Airborne observations over the Amazon Basin showed high aerosol particle concentrations in the upper troposphere (UT) between 8 and 15 km altitude, with number densities (normalized to standard temperature and pressure) often exceeding tho…
View article: Supplementary material to "Aerosol characteristics and particle production in the upper troposphere over the Amazon Basin"
Supplementary material to "Aerosol characteristics and particle production in the upper troposphere over the Amazon Basin" Open
Figure S1: Example of a back-tracked parcel starting at the location of the HALO aircraft during flight AC18.This parcel started at 2014-09-28 20:34:53 UTC and was traced back in time in onehour steps up to 120 hours, as shown in the time …
View article: On the parametrization of optical particle counter response including instrument-induced broadening of size spectra and a self-consistent evaluation of calibration measurements
On the parametrization of optical particle counter response including instrument-induced broadening of size spectra and a self-consistent evaluation of calibration measurements Open
Optical particle counters (OPCs) are common tools for the in situ measurement of aerosol particle number size distributions. As the actual quantity measured by OPCs is the intensity of light scattered by individual particles, it is necessa…
View article: The Saharan Aerosol Long-Range Transport and Aerosol–Cloud-Interaction Experiment: Overview and Selected Highlights
The Saharan Aerosol Long-Range Transport and Aerosol–Cloud-Interaction Experiment: Overview and Selected Highlights Open
North Africa is the world’s largest source of dust, a large part of which is transported across the Atlantic to the Caribbean and beyond where it can impact radiation and clouds. Many aspects of this transport and its climate effects remai…
View article: ACRIDICON–CHUVA Campaign: Studying Tropical Deep Convective Clouds and Precipitation over Amazonia Using the New German Research Aircraft HALO
ACRIDICON–CHUVA Campaign: Studying Tropical Deep Convective Clouds and Precipitation over Amazonia Using the New German Research Aircraft HALO Open
Between 1 September and 4 October 2014, a combined airborne and ground-based measurement campaign was conducted to study tropical deep convective clouds over the Brazilian Amazon rain forest. The new German research aircraft, High Altitude…
View article: Grain size distribution uncertainty quantification in volcanic ash dispersal and deposition from weak plumes
Grain size distribution uncertainty quantification in volcanic ash dispersal and deposition from weak plumes Open
We present the results of uncertainty quantification and sensitivity analysis applied to volcanic ash dispersal from weak plumes with focus on the uncertainties associated to the original grain size distribution of the mixture. The Lagrang…
View article: Reconstructing eruptive source parameters from tephra deposit: a numerical approach for medium-sized explosive eruptions
Reconstructing eruptive source parameters from tephra deposit: a numerical approach for medium-sized explosive eruptions Open
Since the seventies, several reconstruction techniques have been proposed, and are currently used, to extrapolate and quantify eruptive parameters from sampled deposit datasets. Discrete numbers of tephra ground loadings or stratigraphic r…