Ground-Based Remote Sensing of Total Columnar CO2, CH4, and CO Using EM27/SUN FTIR Spectrometer at a Suburban Location (Shadnagar) in India and Validation of Sentinel-5P/TROPOMI. - Vijay Kumar Sagar; Mahesh Pathakoti; Mahalakshmi D. V.; Krishnan Sundara Rajan; Sesha Sai M. V. R.; Frank Hase; Darko Dubravica; Mahesh Kumar Sha (IEEE Geosci. Remote. Sens. Lett., 2022)