Vertical Distribution of Arctic Methane in 2009-2018 Using Ground-Based Remote Sensing. - Tomi Karppinen; Otto Lamminpää; Simo Tukiainen; Rigel Kivi; Pauli Heikkinen; Juha Hatakka; Marko Laine; Huilin Chen 003; Hannakaisa Lindqvist; Johanna Tamminen (Remote. Sens., 2020)