Heddiw,rwyf hefyd yn cyhoeddi adroddiad manwl a gwblhawyd gan y Panel Cynghori ar Aer Glân ar effaith pandemig COVID-19 ar ansawdd aer. Mae canlyniadau cynnar ansawdd aer yn dangos darlun cymhleth ers mis Mawrth 2020. Gwelodd 2 fis cyntaf y cyfyngiadau symud ostyngiadau sylweddol mewn rhai lefelau llygryddion, gan gynnwys ocsidiau nitrogen, sy'n gyson â lefelau traffig is. Fodd bynnag, cynyddodd lefelau llygryddion eraill, gan gynnwys deunydd gronynnol mân ac oson. Mae hyn yn dangos yr effaith gymhleth y gall newidiadau mewn arferion cymdeithasol ac ymyriadau technolegol ei chael.
Today, I am also publishing a detailed report completed by the Clean Air Advisory Panel on theimpact of the COVID-19 pandemic on air quality. Early results of air quality show a complicated picture since March 2020. The first 2 months of lockdown saw significant decreases in some pollutant levels, including nitrogen oxides, consistent with reduced traffic levels. However, other pollutant levels increased, including fine particulate matter and ozone. This demonstrates the complex impact that changes in social practices and technological interventions can have.