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Meteorologia fisica --- Aerosols --- Light absorption. --- Light --- Lumière --- Optical properties. --- Scattering. --- Absorption --- Diffusion --- Lumière --- Electromagnetism. Ferromagnetism --- Light absorption --- Optical properties --- Scattering --- Aerosols - Optical properties --- Light - Scattering --- Absorption. --- Diffusion.

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Aerosols play a critical role in a broad range of scientific disciplines, such as atmospheric chemistry and physics, combustion science, drug delivery and human health. This thesis explores the fundamentals of a new technique for capturing single or multiple particles using light, and for characterising these particles by Raman or fluorescence spectroscopy. The outcome of this research represents a significant development in optical manipulation techniques, specifically in aerosol optical tweezing. It is demonstrated that this technique can be applied to studies of the mass accommodation of gas-phase water molecules adsorbing onto a water surface. Not only is this a fundamental process of interest to physical chemists, but it is a highly important area for understanding the roles of aerosol particles in the atmosphere and their ability to become cloud droplets. This new strategy for investigating aerosol dynamics promises to be fundamental in helping us understand the indirect effect of aerosols on the climate.

Aerosols -- Optical properties -- Observations. --- Atmosphere -- Laser observations. --- Atmospheric aerosols -- Optical properties. --- Atmospheric aerosols -- Remote sensing. --- Light absorption. --- Chemistry --- Earth & Environmental Sciences --- Physical Sciences & Mathematics --- Meteorology & Climatology --- Physical & Theoretical Chemistry --- Luminescence. --- Aerosols. --- Chemistry. --- Physical chemistry. --- Geophysics. --- Climate change. --- Physical Chemistry. --- Geophysics and Environmental Physics. --- Climate Change. --- Colloids --- Gases --- Afterglow (Physics) --- Light --- Light sources --- Radiation --- Chemistry, Physical organic. --- Climatic changes. --- Changes, Climatic --- Changes in climate --- Climate change --- Climate change science --- Climate changes --- Climate variations --- Climatic change --- Climatic changes --- Climatic fluctuations --- Climatic variations --- Global climate changes --- Global climatic changes --- Climatology --- Climate change mitigation --- Teleconnections (Climatology) --- Chemistry, Physical organic --- Chemistry, Organic --- Chemistry, Physical and theoretical --- Environmental aspects --- Geological physics --- Terrestrial physics --- Earth sciences --- Physics --- Chemistry, Theoretical --- Physical chemistry --- Theoretical chemistry --- Global environmental change --- Environmental sciences. --- Physics. --- Environment. --- Environmental Physics. --- Environmental Sciences. --- Balance of nature --- Biology --- Bionomics --- Ecological processes --- Ecological science --- Ecological sciences --- Environment --- Environmental biology --- Oecology --- Environmental sciences --- Population biology --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics --- Environmental science --- Science --- Ecology

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Remote Sensing is of paramount importance for Earth Observation to monitor and analyze the Earth’s vital signs. In this Special Issue are reported the latest research results involving active optical remote sensing instruments, both from ground-based to satellite platforms, that are involved in analyzing the vertical and horizontal aerosol and cloud distribution, other than their geometrical, optical and microphysical properties. Those active optical remote sensing techniques are also very useful in determining pollutant dispersion and the dynamics inside the boundary layer. The published studies put in evidence the hidden mechanisms on how pollution from the source is advected transnationally in other countries and the interaction with local meteorology.

rainfall --- lidar --- disdrometer --- evaporation --- meteorology --- climate change --- latent heat --- precipitation --- MOD04 --- Dark-Target --- Deep-Blue --- AERONET --- LiDAR --- AOD --- Beijing --- China --- CALIPSO --- dust top height --- frequency of dust occurrence --- pure dust --- polluted dust --- extinction coefficient --- above-cloud aerosol --- low-level cloud --- cloud base height --- ground-based observations --- relative humidity profile --- threshold --- Yunnan–Kweichow Plateau --- low–latitude plateau monsoon climate --- aerosol type and source --- aerosol properties --- monsoon index --- seasonal variation --- aerosol --- aerosol–cloud interactions --- MPLNET --- image processing --- network --- infrastructure --- virga --- black carbon --- Tibetan plateau --- water vapor transport --- South Asian summer monsoon --- East Asian summer monsoon --- PM2.5 --- radar wind profiler --- wind shear --- dual-field-of-view (FOV) --- geometric overlap factor (GOF) --- blind zone --- transition zone --- mass concentration --- stereo-monitoring networks --- Doppler LiDAR --- spatial wind variability --- air quality --- turbulent mixing --- cloud --- Hong Kong --- aerosols --- remote sensing --- wind lidar --- air-pollution --- radiative effects --- ground based remote sensing --- aerosols optical properties --- lidar ratio --- aerosol type