An emerging ground-based aerosol climatology: Aerosol optical depth from AERONET
, 2001 Long-term measurements by the AERONET program of spectral aerosol optical depth, precipitable water, and derived Angstrom exponent were analyzed and compiled into an aerosol optical properties climatology.
B. Holben +22 more
semanticscholar +1 more source
Measuring aerosol size distributions with the aerodynamic aerosol classifier [PDF]
Aerosol Science and Technology, 2018 The Aerodynamic Aerosol Classifier (AAC) is a novel instrument that selects aerosol particles based on their relaxation time or aerodynamic diameter. Additional theory and characterization is required to allow the AAC to accurately measure an aerosol's aerodynamic size distribution by stepping whilst connected to a particle counter (such as a ...
Johnson, TJ +4 more
openaire +3 more sources
Flow-induced errors in airborne in situ measurements of aerosols and clouds [PDF]
Atmospheric Measurement Techniques, 2020 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.
A. Spanu +4 more
doaj +1 more source
Estimating aerosol emissions by assimilating observed aerosol optical depth in a global aerosol model [PDF]
Atmospheric Chemistry and Physics, 2012 Abstract. This study estimates the emission fluxes of a range of aerosol species and aerosol precursor at the global scale. These fluxes are estimated by assimilating daily total and fine mode aerosol optical depth (AOD) at 550 nm from the Moderate Resolution Imaging Spectroradiometer (MODIS) into a global aerosol model of intermediate complexity ...
Frédéric Chevallier +3 more
openaire +6 more sources
Canadian Respiratory Journal, 1999 OBJECTIVE: To measure the droplet size distribution of a nicotine pressurized metered-dose inhaler using a nicotine in ethanol solution formulation with hydrofluoroalkane as propellant.
Paul G Andrus +3 more
doaj +1 more source
Estimating errors in vehicle secondary aerosol production factors due to oxidation flow reactor response time [PDF]
Atmospheric Measurement TechniquesOxidation flow reactors used in secondary aerosol research do not immediately respond to changes in the inlet concentration of precursor gases because of their broad transfer functions.
P. Simonen +7 more
doaj +1 more source
Determination of car on-road black carbon and particle number emission factors and comparison between mobile and stationary measurements [PDF]
Atmospheric Measurement Techniques, 2015 We have used two methods for measuring emission factors (EFs) in real driving conditions on five cars in a controlled environment: the stationary method, where the investigated vehicle drives by the stationary measurement platform and the composition of ...
I. Ježek +4 more
doaj +1 more source
JWST Transit Spectra II: Constraining Aerosol Species, Particle-size Distributions, Temperature, and Metallicity for Cloudy Exoplanets [PDF]
, 2020 JWST will provide moderate resolution transit spectra with continuous wavelength coverage from the optical to the mid-infrared for the first time. In this paper, we illustrate how different aerosol species, size-distributions, and spatial distributions encode information in JWST transit spectra.
arxiv +1 more source
, 2008 The species and chemistry responsible for secondary organic aerosol (SOA) formation remain highly uncertain. Laboratory studies of the oxidation of individual, high-flux SOA precursors do not lead to particles with mass spectra (MS) matching those of ...
A. Sage +3 more
semanticscholar +1 more source
Environmental Effects on Viable Virus Transport and Resuspension in Ventilation Airflow
Viruses, 2022 To understand how SARS-CoV-2 spreads indoors, in this study bovine coronavirus was aerosolized as simulant into a plexiglass chamber with coupons of metal, wood and plastic surfaces.
Tatiana A. Baig +3 more
doaj +1 more source