Seasonal freezing induces large thaw emissions of nitrous oxide, a trace gas that contributes to stratospheric ozone destruction and atmospheric warming. Cropland soils are by far the largest anthropogenic source of nitrous oxide. However, the global contribution of seasonal freezing to nitrous oxide emissions from croplands is poorly quantified, mostly due to the lack of year-round measurements and difficulty in capturing short-lived pulses of nitrous oxide with traditional measurement methods. Here we present measurements collected with half-hourly resolution at two contrasting cropland sites in Ontario and Manitoba, Canada, over 14 and 9 years, respectively. We find that the magnitude of freeze–thaw-induced nitrous oxide emissions is related to the number of days with soil temperatures below 0 °C, and we validate these findings with emissions data from 11 additional sites from cold climates around the globe. Based on an estimate of cropland area experiencing seasonal freezing, reanalysis model estimates of soil temperature, and the relationship between cumulative soil freezing days and emissions that we derived from the cropland sites, we estimate that seasonally frozen cropland contributes 1.07 ± 0.59 Tg of nitrogen as nitrous oxide annually. We conclude that neglecting freeze–thaw emissions would lead to an underestimation of global agricultural nitrous oxide emissions by 17 to 28%.
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Wagner-Riddle, C. et al. Intensive measurement of nitrous oxide emissions from a corn-soybean-wheat rotation under two contrasting management systems over 5 years. Glob. Change Biol. 13, 1722–1736 (2007).
Butterbach-Bahl, K., Baggs, E. M., Dannenmann, M., Kiese, R. & Zechmeister-Boltenstern, S. Nitrous oxide emissions from soils: how well do we understand the processes and their controls? Phil. Trans. R. Soc. B 368, 20130122 (2013).
Matzner, E. & Borken, W. Do freeze–thaw events enhance C and N losses fromsoils of different ecosystems? A review. Eur. J. Soil Sci. 59, 274–284 (2008).
Kim, D. G., Vargas, R., Bond-Lamberty, B. & Turetsky, M. R. Effects of soil rewetting and thawing on soil gas fluxes: a review of current literature and suggestions for future research. Biogeosciences 9, 2459–2483 (2012).
Abalos, D. et al. Micrometeorological measurements over 3 years reveal differences in N2O emissions between annual and perennial crops. 22, 1244–1255 (2015).
Bremner, J. M., Robbins, S. G. & Blackmer, A. M. Seasonal variability in emission of nitrous oxide from soil. Geophys. Res. Lett. 7, 641–644 (1980).
Savage, K., Phillips, R. & Davidson, E. High temporal frequency measurements of greenhouse gas emissions from soils. Biogeosciences 11, 2709–2720 (2014).
Schimel, J., Balser, T. C. & Wallenstein, M. Microbial stress-response physiology and its implications for ecosystem function. Ecology 88, 1386–1394 (2007).
Congreves, K. A., Brown, S. E., Németh, D. D., Dunfield, K. E. & Wagner-Riddle, C. Differences in field-scale N2O flux linked to crop residue removal under two tillage systems in cold climates. GCB Bioenergy http://dx.doi.org/10.1111/gcbb.12354 (in the press).
Hu, H. W., Chen, D. & He, J. Z. Microbial regulation of terrestrial nitrous oxide formation: understanding the biological pathways for prediction of emission rates. FEMS Microbiol. Rev. 39, 729–749 (2015).
Wertz, S. et al. Effects of temperatures near the freezing point on N2O emissions, denitrification and on the abundance and structure of nitrifying and denitrifying soil communities. FEMS Microbiol. Ecol. 83, 242–254 (2013).
Németh, D. D., Wagner-Riddle, C. & Dunfield, K. E. Abundance and gene expression in nitrifier and denitrifier communities associated with a field scale spring thaw N2O flux event. Soil Biol. Biochem. 73, 1–9 (2014).
Teepe, R., Brumme, R. & Beese, F. Nitrous oxide emissions from soil during freezing and thawing periods. Soil Biol. Biochem. 33, 1269–1275 (2001).
Risk, N., Snider, D. & Wagner-Riddle, C. Mechanisms leading to enhanced soil nitrous oxide fluxes induced by freeze–thaw cycles. Can. J. Soil Sci. 93, 401–414 (2013).
Hensen, A. et al. Low cost and state of the art methods to measure nitrous oxide emissions. Environ. Res. Lett. 8, 025022 (2013).
Wolf, B. et al. Grazing-induced reduction of natural nitrous oxide release from continental steppe. Nature 464, 881–884 (2010).
Glenn, A. J., Tenuta, M., Amiro, B. D., Maas, S. E. & Wagner-Riddle, C. Nitrous oxide emissions from an annual crop rotation on poorly drained soil on the Canadian Prairies. Agric. For. Meteorol. 166–167, 41–49 (2012).
Kim, Y., Kimball, J. S., McDonald, K. C. & Glassy, J. Developing a global data record of daily landscape freeze/thaw status using satellite passive microwave remote sensing. IEEE Trans. Geosci. Remote Sens. 49, 949–960 (2011).
Ramankutty, N., Evan, A. T., Monfreda, C. & Foley, J. A. Farming the planet: 1. Geographic distribution of global agricultural lands in the year 2000. Glob. Biogeochem. Cycles 22, GB1003 (2008).
Luo, G. J. et al. Decadal variability of soil CO2, NO, N2O, and CH4 fluxes at the Höglwald Forest, Germany. Biogeosciences 9, 1741–1763 (2012).
Viterbo, P., Beljaars, A. C. M., Viterbo, P. & Beljaars, A. C. M. An improved land surface parameterization scheme in the ECMWF Model and its validation. J. Clim. 8, 2716–2748 (1995).
Van den Hurk, B. J. J. M., Viterbo, P., Beljaars, A. C. M. & Betts, A. K. Offline Validation of the ERA40 Surface Scheme Technical Memorandum 295 (ECMWF, 2000).
Reichle, R. H. et al. Assessment and enhancement of MERRA land surface hydrology estimates. J. Clim. 24, 6322–6338 (2011).
Rodell, M., Houser, P. R., Jambor, U. E. A. & Gottschalck, J. The global land data assimilation system. Bull. Am. Meteorol. Soc. 85, 381–394 (2004).
Bouwman, A. F., Boumans, L. J. M. & Batjes, N. H. Emissions of N2O and NO from fertilized fields: summary of available measurement data. Glob. Biogeochem. Cycles 16, 1058 (2002).
Henry, H. A. L. Soil freeze–thaw cycle experiments: trends, methodological weaknesses and suggested improvements. Soil Biol. Biochem. 39, 977–986 (2007).
Groffman, P. M. et al. Colder soils in a warmer world: a snow manipulation study in a northern hardwood forest ecosystem. Biogeochemistry 56, 135–150 (2001).
Ciais, P. et al. in Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) 465–570 (IPCC, Cambridge Univ. Press, 2013).
Del Grosso, S. J., Wirth, T., Ogle, S. M. & Parton, W. J. Estimating agricultural nitrous oxide emissions. Eos 89, 529 (2008).
Syakila, A. & Kroeze, C. The global nitrous oxide budget revisited. Greenh. Gas Meas. Manage. 1, 17–26 (2011).
EDGAR EDGAR Emissions Database for Global Atmospheric Research (version 4.3.1) (2016); http://edgar.jrc.ec.europa.eu
Global Anthropogenic Non-CO 2 Greenhouse Gas Emissions (Environmental Protection Agency, 2012).
Mosier, A. et al. Closing the global N2O budget: nitrous oxide emissions through the agricultural nitrogen cycle. Nutr. Cycle Agroecosyst. 52, 225–248 (1998).
Davidson, E. A. et al. Inventories and scenarios of nitrous oxide emissions. Environ. Res. Lett. 9, 105012 (2014).
Crutzen, P. & Mosier, A. in A Pioneer on Atmospheric Chemistry and Climate Change in the Anthropocene (ed. Crutzen, P.) (Springer, 2008).
Global Estimates of Gaseous Emissions of NH 3 , NO and N 2 O from Agricultural Land (Food and Agriculture Organization (FAO), International Fertilizer Industry Association (IFA), 2001).
Maas, S. E., Glenn, A. J., Tenuta, M. & Amiro, B. D. Net CO2 and N2O exchange during perennial forage establishment in an annual crop rotation in the Red River Valley, Manitoba. Can. J. Soil Sci. 93, 639–652 (2013).
Tenuta, M., Gao, X., Flaten, D. N. & Amiro, B. D. Lower nitrous oxide emissions from anhydrous ammonia application prior to soil freezing in late fall than spring pre-plant application. J. Environ. Qual. 45, 1133–1143 (2016).
Wagner-Riddle, C., Thurtell, G. W. & Edwards, G. C. in Micrometeorology in Agricultural Systems (eds Hatfield, J. L. & Baker, J. M.) 321–343 (American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2005); http://dx.doi.org/10.2134/agronmonogr47.c14
Schwager, E. et al. Field nitrogen losses induced by application timing of digestate from dairy manure biogas production. J. Environ. Qual. 45, 1829–1837 (2016).
Chantigny, M., Rochette, P. & Angers, D. Non-growing season N2O and CO2 emissions—temporal dynamics and influence of soil texture and fall-applied manure. Can. J. Soil Sci. http://dx.doi.org/10.1139/CJSS-2016-0110 (in the press).
Pattey, E. et al. Tools for quantifying N2O emissions from agroecosystems. Agric. For. Meteorol. 142, 103–119 (2007).
Johnson, J. M. F., Archer, D. & Barbour, N. Greenhouse gas emission from contrasting management scenarios in the northern corn belt. Soil Sci. Soc. Am. J. 74, 396–406 (2010).
Johnson, J. M. F. & Barbour, N. W. Nitrous oxide emission and soil carbon sequestration from herbaceous perennial biofuel feedstocks. Soil Sci. Soc. Am. J. 80, 1057–1070 (2016).
Ruan, L. & Robertson, G. P. Reduced snow cover increases wintertime nitrous oxide (N2O) emissions from an agricultural soil in the upper U.S. midwest. Ecosystems http://dx.doi.org/10.1007/s10021-016-0077-9 (in the press).
Yanai, Y. et al. Accumulation of nitrous oxide and depletion of oxygen in seasonally frozen soils in northern Japan—snow cover manipulation experiments. Soil Biol. Biochem. 43, 1779–1786 (2011).
Katayanagi, N. & Hatano, R. N2O emissions during the freezing and thawing periods from six fields in a livestock farm, southern Hokkaido, Japan. Soil Sci. Plant Nutr. 58, 261–271 (2012).
Shi, Y. et al. Integrated management practices significantly affect N2O emissions and wheat–maize production at field scale in the North China Plain. Nutr. Cycle Agroecosyst. 95, 203–218 (2013).
Teepe, R., Brumme, R. & Beese, F. Nitrous oxide emissions from frozen soils under agricultural, fallow and forest land. Soil Biol. Biochem. 32, 1807–1810 (2000).
Hellebrand, H. J., Scholz, V. & Kern, J. Fertiliser induced nitrous oxide emissions during energy crop cultivation on loamy sand soils. Atmos. Environ. 42, 8403–8411 (2008).
Friedl, M. A. et al. MODIS Collection 5 global land cover: algorithm refinements and characterization of new datasets. Remote Sens. Environ. 114, 168–182 (2010).
Viterbo, P., Beljaars, A., Mahfouf, J.-F. & Teixeira, J. The representation of soil moisture freezing and its impact on the stable boundary layer. Q. J. R. Meteorol. Soc. 125, 2401–2426 (1999).
Douville, H., Royer, J.-F. & Mahfouf, J.-F. A new snow parameterization for the Météo-France climate model. Clim. Dynam. 12, 21–35 (1995).
Rienecker, M. M. et al. MERRA: NASA’s modern-era retrospective analysis for research and applications. J. Clim. 24, 3624–3648 (2011).
Xie, P., Arkin, P. A., Xie, P. & Arkin, P. A. Global precipitation: a 17-year monthly analysis based on gauge observations, satellite estimates, and numerical model outputs. Bull. Am. Meteorol. Soc. 78, 2539–2558 (1997).
Chen, F. et al. Modeling of land surface evaporation by four schemes and comparison with FIFE observations. J. Geophys. Res. 101, 7251–7268 (1996).
Koren, V. et al. A parameterization of snowpack and frozen ground intended for NCEP weather and climate models. J. Geophys. Res. 104, 19569–19585 (1999).
Sheffield, J. et al. Development of a 50-year high-resolution global dataset of meteorological forcings for land surface modeling. J. Clim. 19, 3088–3111 (2006).
This study was funded by Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grants to C.W.-R., A.A.B., M.T.; grants from the Agriculture and Agri-Food Canada/Agricultural Greenhouse Gas Program and the NSERC Strategic program to C.W.-R. and M.T.; and an Ontario Ministry of Agriculture, Food and Rural Affairs program to C.W.-R. Thoughtful suggestions and comments by Eric Davidson on an earlier version of this manuscript were greatly appreciated.
The authors declare no competing financial interests.
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Wagner-Riddle, C., Congreves, K., Abalos, D. et al. Globally important nitrous oxide emissions from croplands induced by freeze–thaw cycles. Nature Geosci 10, 279–283 (2017). https://doi.org/10.1038/ngeo2907
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