Temperature Adjustments of Chamber-Based Flux Measurements.

Diurnal temperature variations can influence soil N₂O emissions.  Because chamber-based N₂O measurements are typically short term in nature, biased estimates of daily emissions can be obtained, depending upon the time of day the measurements are taken.  This work evaluates the potential temperature-induced biases associated daily N₂O emissions estimates.   Application of the Q₁₀ coefficient can be used adjust point-in-time measurements to daily averages.  However, a number of factors must be considered, including:  the value of the Q₁₀ coefficient, and the source (i.e. soil depth) of the temperatures to be used in the correction.  An evaluation of these factors is presented, and recommendations are provided.