Fig. 2.

The relationship of OCS flux (F_OCS, pmol⋅m⁻²⋅s⁻¹; black circles), CO₂ flux (F_CO2, µmol⋅m⁻²⋅s⁻¹; green squares), and photosynthesis (calculated as GEP, µmol⋅m⁻²⋅s⁻¹; red triangles) with (A) air temperature and (B) PAR. Values of F_OCS and F_CO2 include nighttime values. (C) The ƒ_OCS/ƒ_GEP ratio with air temperature, for PAR > 300 µE⋅m⁻²⋅s⁻¹. (D) The ƒ_OCS/ƒ_GEP ratio with PAR, for PAR > 300 µE⋅m⁻²⋅s⁻¹. Black dashed lines show 95% CI. July data are excluded. Only data with u* > 0.17 m⋅s⁻¹ are used.