Applications of Sentinel-5P TROPOMI Satellite Sensor: A Review

The Sentinel-5 Precursor (Sentinel-5P) is an Earth Observation satellite developed by the European Space Agency. The aim is primarily to fill the gap between end of the Envisat mission and the proposed launch of Sentinel-5. The satellite has a single payload and carries the TROPOMI-sensor aboard which is a nadir viewing imaging spectrometer. The sensor measures electromagnetic spectral wavelengths between UV (270-320nm) and SWIR (2305-2385nm), to carry out air pollution monitoring. The sensor measures both the Top of the Atmosphere (TOA) reflected solar radiation, and radiation from Earth. The sensor has a push-broom (non-scanning) configuration with a swath of 2600km on ground. The TROPOMI-sensor has a near pixel dimension of 7×3.5km2 for all the spectral bands. However, the UV-1 and SWIR bands are an exception to this with pixel dimensions of 7×28km2 and 7×7km2 respectively. The data products from the sensor are available at Level-1B and Level-2. The TROPOMI-sensor has been utilized worldwide in several research works related to atmospheric pollution- mapping, monitoring, and modelling since its launch. The TROPOMI-sensor is being utilized to study the atmospheric pollutant measurements, impact of forest fires and carbon sequestration. This paper aims to present a concise review of the current status of TROPOMI-sensor in terms of applications in the study of the atmosphere at country, state, and city levels across the globe. It is aimed that documentation on such applications would help researchers world over, to think and utilize its data further, for better study of global climate change and its impacts.