Fig. 3. Time series of measurements during soil gas sampling in March and April 2005: (A) snow depth (thick line) and cumulative precipitation in units of millimeter liquid equivalent (thin line), (B) wind velocity measured at 10 m above the ground, (C) air temperature measured at 1.5 m above the ground, (D) soil temperature measured at 5- (thin line) and 25-cm (thick line) depths, (E) soil volumetric water content measured at 5- (thin line) and 25-cm (thick line) depths, and (F) N₂O concentrations at the 25-cm depth.