FTIR Measurements of Greenhouse Gases over Thessaloniki, Greece in the Framework of COCCON and Comparison with S5P/TROPOMI Observations. - Marios Mermigkas; Chrysanthi Topaloglou; Dimitrios Balis; Maria Elissavet Koukouli; Frank Hase; Darko Dubravica; Tobias Borsdorff; Alba Lorente (Remote. Sens., 2021)