Sampling frequency affects estimates of annual nitrous oxide fluxes

L. Barton; B. Wolf; D. Rowlings; C. Scheer; R. Kiese; P. Grace; K. Stefanova; K. Butterbach-Bahl

doi:10.1038/srep15912

journal article Open Access Nov 02, 2015

Sampling frequency affects estimates of annual nitrous oxide fluxes

L. Barton B. Wolf D. Rowlings C. Scheer R. Kiese P. Grace K. Stefanova

K. Butterbach-Bahl

Scientific Reports Vol. 5 No. 1 · Springer Science and Business Media LLC

View at Publisher Save 10.1038/srep15912

Abstract

AbstractQuantifying nitrous oxide (N2O) fluxes, a potent greenhouse gas, from soils is necessary to improve our knowledge of terrestrial N2O losses. Developing universal sampling frequencies for calculating annual N2O fluxes is difficult, as fluxes are renowned for their high temporal variability. We demonstrate daily sampling was largely required to achieve annual N2O fluxes within 10% of the ‘best’ estimate for 28 annual datasets collected from three continents—Australia, Europe and Asia. Decreasing the regularity of measurements either under- or overestimated annual N2O fluxes, with a maximum overestimation of 935%. Measurement frequency was lowered using a sampling strategy based on environmental factors known to affect temporal variability, but still required sampling more than once a week. Consequently, uncertainty in current global terrestrial N2O budgets associated with the upscaling of field-based datasets can be decreased significantly using adequate sampling frequencies.

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Details

Published: Nov 02, 2015
Vol/Issue: 5(1)
License: View

Authors

School of Animal Biology The UWA Institute of Agriculture The University of Western Australia Perth WA Australia

K

K. Butterbach-Bahl

Cite This Article

L. Barton, B. Wolf, D. Rowlings, et al. (2015). Sampling frequency affects estimates of annual nitrous oxide fluxes. Scientific Reports, 5(1). https://doi.org/10.1038/srep15912

Sampling frequency affects estimates of annual nitrous oxide fluxes

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