Aerosol - an overview | ScienceDirect Topics
2000年8月23日 · The main aerosol property affecting the satellite signal is the aerosol optical depth (AOD, sometimes also called aerosol optical thickness—AOT). AOD is an optical measure of aerosol column amount, based on the light scattered and absorbed by airborne particles, and typically reported at a reference wavelength in the mid-visible part of the ...
Atmospheric Aerosol - an overview | ScienceDirect Topics
Online analysis also facilitates aerosol sampling from aircraft platforms, in low particle concentration environments, or when a rare subset of the particle population is the target, such as ice-nucleating particles. 5–11 Offline single-particle analysis can often provide more detailed chemical and morphological characterization than is ...
Aerosol properties, trends and classification of key types over the ...
2021年2月1日 · Aerosol optical properties have been analyzed to investigate seasonal and regional variability of aerosols and to classify their key types over the Middle East during the period 2001–2019. The collection 6.1 MODIS aerosol products are used, including daily values of aerosol optical depth (AOD) and the Ångström exponent (AE) data.
Research on aerosol sources and chemical composition: Past, …
2013年2月1日 · The size of a particle may range from a few nanometers to several tens of microns. Size is the main parameter for characterising aerosol behaviour. Most aerosol characteristics, as well as the processes governing these characteristics and their impacts, depend on particle size (EPA, 1996, Seinfeld and Pandis, 1998).
Aerosol–cloud–precipitation interactions. Part 1. The nature and ...
2008年7月1日 · Aerosol particles are produced either directly by anthropogenic and natural sources (dust, sea salt, soot, biological particles, etc.), or they are formed in the atmosphere by condensation of low-volatility compounds (e.g., sulfuric acid or oxidized organic compounds).
Observational evidence and mechanisms of aerosol effects on ...
2024年5月30日 · Aerosol-Radiation Interactions (ARI) and Aerosol-Cloud Interactions (ACI) are recognized as two key mechanisms of aerosol effects on clouds and precipitation, and their names have evolved from Intergovernmental Panel on Climate Change (IPCC) AR4 to AR5 (summarized in Fig. 1).
Aerosol transmission of SARS-CoV-2? Evidence, prevention and …
2020年11月1日 · To reduce aerosol transmission of SARS-CoV-2 in the general public in relatively confined and poor ventilation settings such as public transportation vehicles (e.g. bus, cruise, train, subway, and plane) and some public places (e.g. shopping malls, bars, restaurants, clubs, hotels, banks, offices, libraries, conference rooms and cinemas), and ...
Aerosol spatiotemporal dynamics, source analysis and influence ...
The multiangle implementation of atmospheric correction (MAIAC), the latest aerosol retrieval algorithm, has effectively improved the quality of MODIS aerosol products because of its superiority and increased the spatial resolution of MODIS aerosol products to 1 km for the first time (Lyapustin et al., 2012, Lyapustin et al., 2018).
Inhaled aerosols: Their role in COVID-19 transmission, including ...
2021年8月1日 · When aerosol gradually accelerates during inhalation towards PIFR, the inertial mechanism of deposition of large particles becomes predominant. Consequently, the majority of particles larger than 5 μm are effectively removed from the airstream already in the nose/mouth/throat (i.e. the upper airways), so they are absent in the aerosol that ...
Aerosol optical and radiative properties and their environmental ...
2024年1月1日 · Some studies have investigated the long-term evolution of aerosol loadings and aerosol–climate interactions in Northeast and Southwest China using AOD related to aerosol type and chemical components derived from aerosol reanalysis products (Zhao et al., 2020; Zhu et al., 2022). By establishing the correlation between reanalysis data and ...