Figure 2
From: A considerable fraction of soil-respired CO2 is not emitted directly to the atmosphere
Time series of daily-averaged values for the three pedons of air temperature (Air T), atmospheric pressure (P), soil temperature (Soil T), volumetric water content (VWC), precipitation, CO2 volumetric fraction, oxygen volumetric fraction, apparent respiratory quotient (ARQ) and soil CO2 efflux (Fsoil) at 10, 30, and 60 cm depth during 2015. The standard error for each variable is shown with shading. The period studied in Fig. 2 is highlighted with shading.
