3.7 million people around the world died in 2012 as a result of outdoor air pollution, according to the World Health Organization (WHO). As a major environmental health problem, air pollution affects people in developed and developing countries alike and poor air quality generates millions of people dying prematurely every year, so it has never been more important to monitor the air we breathe.
Pollutants enter the air from a range of sources, although they are mainly a result of motor vehicle and industrial combustion processes. Governments and decision-makers rely heavily on satellite data and computer models to show how pollution accumulates and how it is carried in the air, so that they can develop appropriate mitigation strategies. The Sentinel-5P satellite, one of the Copernicus satellite missions, more particularly provides measurement continuity and timely data on a multitude of trace gases (CO, NO2, SO2, O3, aerosols…), with high accuracy and spatial resolution.
During this webinar, you will learn how to access the RUS environment allowing to download, process, analyse and visualize the free data acquired by the Copernicus satellite and you will be introduced to Sentinel-5P data, especially Level 2 Products. We will then discuss the structure of the netCDF files used to distribute the data and we will explore them using the well-known Python library xarray. In addition, you will learn how to generate Level 3 products using HARP for a multi-temporal evaluation of NO2. The analysis will focus on Northern Italy, where NO2 emissions drastically dropped since the beginning of March 2020, as a result of Italy’s lockdown due to Covid-19, leading to a slump of the industrial activity.
You can replay this webinar through our RUS Copernicus Training channel available on Youtube.
You can also retrieve the corresponding training support in the Learn by yourself section of the RUS portal.