Determine of Nitrogen Dioxide Emissions over Khuoms City in Libya Using MODIS and TROPOMI Satellites

Abstract

Sentinel-5 Forerunner (S-5P), carrying the TROPO round recognition Instrument (TROPOMI) nadir-viewing crystal spectroscope, is that the beginning mission of the Copernicus Program committed to the recognition of air quality. Within the given data the TROPOMI tropospheric gas (NO2) level-2 (L2) item has been substantially over capably sullied urban districts by comparison with coincident high-resolution MODIS remote detecting observations (1 km×1 km). Satellite products may be ideally surveyed backed by 5 bands, as an out-measured amount of lackey pixels may be completely mapped within the system of the S-5P approval campaign over Khumos town in Libya. Each piece of information was taken in 2020 over a power station in Khuoms city in Libya, for mapping the level dissemination of tropospheric NO2, each image pixel was fully covered by approximately 370 to 700 nm for visible spectrum (MODIS and TROPOMI pixels). The TROPOMI and MODIS NO2 emissions were similar in concept, the regression analysis of both data with well correlated (R2= 0.87), and there is a negative relationship (−0.03×1015 molec/cm2) recorded when clouds and dust were prevalent over the study area. From the results obtained from MODIS and TROPOMI data, nitrogen dioxide emissions were high to medium (6.6 to 3.2×1015 molec/cm2) at their source and five kilometers from the source, while the rest of the study area ranged from (2.2 to 0.15×1015 molec/cm2) low to very low.