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Sampling frequency affects estimates of annual nitrous oxide fluxes

Barton, L.; Wolf, B. 1; Rowlings, D.; Scheer, C. ORCID iD icon; Kiese, R. ORCID iD icon 1; Grace, P.; Stefanova, K.; Butterbach-Bahl, K. 1
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)

Abstract:

Quantifying 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.

Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 2045-2322
urn:nbn:de:swb:90-AAA1101036628
KITopen-ID: 110103662
HGF-Programm 12.02.01 (POF III, LK 01) Effects of land use and climate change
Erschienen in Scientific reports
Verlag Nature Research
Band 5
Seiten 15912
Nachgewiesen in Scopus
Web of Science
Dimensions

Volltext §
DOI: 10.5445/IR/110103662
Originalveröffentlichung
DOI: 10.1038/srep15912
Scopus
Zitationen: 134
Web of Science
Zitationen: 129
Dimensions
Zitationen: 143
Seitenaufrufe: 161
seit 18.05.2018
Downloads: 235
seit 08.01.2018
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