Dynamics and dispersion modelling of nanoparticles from road traffic in the urban atmospheric environment—A review

The rise of low-cost sensing for managing air pollution in cities

“…This makes it difficult to compile representative and reliable information for a city or area as a whole, and thereby, to form a more macroscopic view of pollution field trends. Often modelling approaches are used to address this issue, but these might carry inherent aleatoric and epistemic uncertainties due to crude approximations in input conditions (Kumar et al 2011;Oberkampf et al 2002).…”

Prediction of ultrafine particle number concentrations in urban environments by means of Gaussian process regression based on measurements of oxides of nitrogen

“…Its response is thus site and time specific (Kulmala et al, 2004) and the transformation processes that change the UFP number and size distributions differ both temporally and spatially (Kumar et al, 2011b), making the modelling of this pollutant a really challenging task (Nikolova et al, 2011).…”

Size–segregated particulate matter inside residences of elderly in the Metropolitan Area of São Paulo, Brazil

“…The fine particles also contain particles below 100 nm, which are referred to as ultrafine particles, PM 0.1 (Kumar et al, 2014;Seinfeld and Pandis, 2016). The ultrafine particles are known to have much greater health impacts than their larger counterparts (Martins et al, 2010;Kumar et al, 2011). The fine particles reach the alveoli while ultrafine particles can translocate from respiratory epithelium towards circulation and reach organs such as heart and brain and cause adverse effects (Elder et al, 2006;Heal et al, 2012).…”