Articles | Volume 13, issue 7
Atmos. Meas. Tech., 13, 4065–4078, 2020
https://doi.org/10.5194/amt-13-4065-2020
Atmos. Meas. Tech., 13, 4065–4078, 2020
https://doi.org/10.5194/amt-13-4065-2020

Research article 29 Jul 2020

Research article | 29 Jul 2020

Capturing temporal heterogeneity in soil nitrous oxide fluxes with a robust and low-cost automated chamber apparatus

Nathaniel C. Lawrence and Steven J. Hall

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Cited articles

Akiyama, H., Tsuruta, H., and Watanabe, T.: N2O and NO emissions from soils after the application of different chemical fertilizers, Chemosphere, 2, 313–320, https://doi.org/10.1016/S1465-9972(00)00010-6, 2000. 
Alves, B. J. R., Smith, K. A., Flores, R. A., Cardoso, A. S., Oliveira, W. R. D., Jantalia, C. P., Urquiaga, S., and Boddey, R. M.: Selection of the most suitable sampling time for static chambers for the estimation of daily mean N2O flux from soils, Soil Biol. Biochem., 46, 129–135, https://doi.org/10.1016/j.soilbio.2011.11.022, 2012. 
Ambus, P. and Robertson, G. P.: Automated near-continuous measurement of carbon dioxide and nitrous oxide fluxes from soil, Soil Sci. Soc. Am. J., 62, 394–400, https://doi.org/10.2136/sssaj1998.03615995006200020015x, 1998. 
Bai, M., Suter, H., Lam, S. K., Flesch, T. K., and Chen, D.: Comparison of slant open-path flux gradient and static closed chamber techniques to measure soil N2O emissions, Atmos. Meas. Tech., 12, 1095–1102, https://doi.org/10.5194/amt-12-1095-2019, 2019. 
Barton, L., Wolf, B., Rowlings, D., Scheer, C., Kiese, R., Grace, P., Stefanova, K., and Butterbach-Bahl, K.: Sampling frequency affects estimates of annual nitrous oxide fluxes, Scientific Reports, 5, 15912, https://doi.org/10.1038/srep15912, 2015. 
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Short summary
Soil emissions of nitrous oxide (N2O), a potent greenhouse gas, are highly variable over space and time. Existing approaches for automated N2O emission measurements are costly and often incompatible with flooded soils. We describe and validate a robust and low-cost apparatus for replicated measurement of soil N2O emissions at subdaily resolution over large spatial gradients (> 100 m). High-frequency measurements are critical for constraining and mitigating the soil N2O source.