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COVID-19 and the Edinburgh congestion charge VI

St John’s Road pollution Jan to April 2020: removing local meteorological effects.


First attempt at ‘deweathering‘ St John’s Road pollution Jan to April 2020, i.e removing local meteorological effects.

Wind speed and direction plus temporal effects (daily, weekday, seasonal cycles) can account for 64% of the variation. The 3D plot aims to improve on that relationship by including local lapse rate / boundary layer paameters derived from the CMIP5 reanalysis product.

The aim is to quantify the effect of reduced traffic-flow during the COVID period on pollution levels and hence assess the benefits of the introduction of a congestion / low emissions scheme on local pollution and public health.

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