Assessing the COVID-19 impact on air quality in Quito, Ecuador

The COVID-19 lockdown impact on air quality is estimated for Andean city - Quito. This data set includes hourly data for a number of sites (urban: Bel, Car, Cam; and suburban: Cot, Gua, Chi) in the Ecuadorian capital for atmospheric and meteorological parameters. The changes in pollution are quantified, showing that during the full lockdown (16 March - 1 June, 2020), air pollution decreased by -53%, -45%, -30%, and -15% for NO2, SO2, CO, and PM2.5, respectively. The traffic-busy districts (Bel and Cot) were the most affected. However, the air pollution starts increasing during the later stages of the full lockdown. Even more, during the partial relaxation (starting on 2 June, 2020), the concentrations nearly return to the pre-pandemic levels.本数据集针对安第斯城市厄瓜多尔首都基多（Quito）的新冠疫情封控对空气质量的影响开展评估。数据集涵盖该首都境内多座监测站点的逐小时大气与气象参数数据，其中城市站点包括Bel、Car、Cam，郊区站点包括Cot、Gua、Chi。研究对污染变化进行了量化分析，结果显示在全面封控期间（2020年3月16日至6月1日），二氧化氮（NO2）、二氧化硫（SO2）、一氧化碳（CO）与细颗粒物（PM2.5）的浓度分别下降53%、45%、30%和15%。交通繁忙的站点区域（Bel与Cot）受影响最为显著。不过在全面封控后期，空气污染浓度开始回升。不仅如此，在2020年6月2日启动的局部解封阶段，污染物浓度几乎回升至疫情前水平。