Micrometeorological and chamber methods for measurement of nitrous oxide fluxes between soils and the atmosphere: Overview and conclusions

Smith, K. A.; Clayton, H.; Arab, J. R. M.; Christensen, Søren; Ambus, Per; Fowler, D.; Hargreaves, K. J.; Skiba, U.; Harris, G. W.; Wienhold, F. G.; Klemedtsson, Leif; Galle, Bo

doi:10.1029/94jd00619

Cited by 94 publications

(47 citation statements)

References 23 publications

(9 reference statements)

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“…EC fluxes ranged from 38 % (March 2007) to 225 % (July 2007, after removal of outlier) of chamber measurements; considering all points of comparison, EC fluxes were 70 % of chamber fluxes. In comparative experiments published by Smith et al (1994) and Pilhatie et al (2005) N 2 O flux values measured with EC were consistently lower than those from chamber methods. Smith et al (1994 and1998) measured fluxes over a period of 2 days from agricultural, fertilised grassland using 24 chambers while Pihlatie et al (2005) presented a comparison period of 6 days from a beech forest using 35 chambers.…”

Section: Comparison Of Chamber and Ec Flux Measurements During Chambementioning

confidence: 99%

“…N 2 O has been measured successfully in agricultural ecosystems by EC since the development of suitable high frequency fast response N 2 O analysers, such as lead salt tunable diode lasers (e.g. Smith et al, 1994;Wienhold et al, 1995;Fowler et al, 1995;Laville et al, 1999;Di Marco et al, 2004) and more recently, quantum cascade lasers (e.g. Neftel et al, 2007;Kroon et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Nitrous oxide emissions from managed grassland: a comparison of eddy covariance and static chamber measurements

et al. 2011

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Abstract.Managed grasslands are known to be an important source of N 2 O with estimated global losses of 2.5 Tg N 2 O-N yr −1 . Chambers are to date the most widely used method to measure N 2 O fluxes, but also micrometeorological methods are successfully applied. In this paper we present a comparison of N 2 O fluxes measured by non-steady state chambers and eddy covariance (EC) (using an ultra-sonic anemometer coupled with a tunable diode laser) from an intensively grazed and fertilised grassland site in South East Scotland. The measurements were taken after fertilisation events in 2003, 2007 and 2008. In four out of six comparison periods, a short-lived increase of N 2 O emissions was observed after mineral N application, returning to background level within 2-6 days. Highest fluxes were measured by both methods in July 2007 with maximum values of 1438 ng N 2 O-N m −2 s −1 (EC) and 651 ng N 2 O-N m −2 s −1 (chamber method). Negative fluxes above the detection limit were observed in all comparison periods by EC, while with chambers, the recorded negative fluxes were always below detection limit. Median and average fluxes over each period were always positive. Over all 6 comparison periods, 69 % of N 2 O fluxes measured by EC at the time of chamber closure were within the range of the chamber measurements. N 2 O fluxes measured by EC during the time of chamber closure were not consistently smaller, neither larger, compared to those measured by chambers: this reflects the fact that the different techniques integrate fluxes over different spatial and temporal scales. Large fluxes measured by chambers may be representing local hotspots providing a small contribution to the flux measured by the EC method which integrates over a larger area. The spatial variability from Correspondence to: S. K. Jones (stephanie.jones@sac.ac.uk) chamber measurements was high, as shown by a coefficient of variation of up to 139 %. No diurnal pattern of N 2 O fluxes was observed, possibly due to the small diurnal variations of soil temperature. The calculation of cumulative fluxes using different integration methods showed EC data provide generally lower estimates of N 2 O emissions than chambers.

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Section: Comparison Of Chamber and Ec Flux Measurements During Chambementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nitrous oxide emissions from managed grassland: a comparison of eddy covariance and static chamber measurements

et al. 2011

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“…Chamber methods to estimate soil gas emissions have been reviewed extensively 7 and compared favorably to other approaches, such as the eddy correlation and gradient methods. [8][9][10] A static flux chamber was used to measure N 2 O and CO 2 fluxes from rice paddy soil. The body of the chamber was made of polyvinyl chloride, and the inner volume was 15 L (0.2 m × 0.75 m × 0.1 m).…”

Section: Sampling and Flux Measurementsmentioning

confidence: 99%

Surface Flux Measurements of CO₂ and N₂O from a Dried Rice Paddy in Japan during a Fallow Winter Season

Kim

Harazono

Baten

et al. 2002

Journal of the Air & Waste Management Association

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“…И в отечественной [Минаева и др., 2003; Глаголев, Суворов, 2007; Глаголев, 2010; Бурба и др., 2016, с. 182-189], и в зарубежной литературе [Baldocchi et al, 1988;Smith et al, 1994;Сhan et al, 1998] используются довольно близкие, по существу, классификации методов измерения удельных потоков (самым общим является деление на камерные и микрометеорологические). Не ясно, чем обусловлено их игнорирование и создание новой классификации.…”

Section: используемые сокращенияunclassified

Thesis of N.A. Shnyrev: I. Micrometeorology and other notes

Sabrekov¹,

Glagolev²

2016

Environmental Dynamics and Global Climate Change

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Настоящая работа посвящена разбору некоторых на наш взгляд спорных и дискуссионных положений, высказанных в диссертации Николая Андреевича Шнырева «Режимные наблюдения и оценка газообмена на границе почвы и атмосферы (на примере потоков метана болотного стационара среднетаежной зоны Западной Сибири “Мухрино”)». Поскольку затронутые в диссертации методологические вопросы являются чрезвычайно важными для такой актуальной темы как оценка баланса парниковых газовых для наземных экосистем, корректности их трактовки необходимо уделять повышенное внимание. Ключевыми поднятыми в диссертации в этом контексте являются вопросы о применимости и работе микрометеорологических методов как альтернативных по отношению к классическим камерным. Рассмотрены критика этих методов Н.А. Шныревым, введённая диссертантом новая кассификация методов измерения газообмена на границе почвы и атмосферы, а также ряд вопросов, связанных с историей изучения эмиссии метана болотами Западной Сибири и методологией работы различных методов.

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Micrometeorological and chamber methods for measurement of nitrous oxide fluxes between soils and the atmosphere: Overview and conclusions

Cited by 94 publications

References 23 publications

Nitrous oxide emissions from managed grassland: a comparison of eddy covariance and static chamber measurements

Nitrous oxide emissions from managed grassland: a comparison of eddy covariance and static chamber measurements

Surface Flux Measurements of CO₂ and N₂O from a Dried Rice Paddy in Japan during a Fallow Winter Season

Thesis of N.A. Shnyrev: I. Micrometeorology and other notes

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Micrometeorological and chamber methods for measurement of nitrous oxide fluxes between soils and the atmosphere: Overview and conclusions

Cited by 94 publications

References 23 publications

Nitrous oxide emissions from managed grassland: a comparison of eddy covariance and static chamber measurements

Nitrous oxide emissions from managed grassland: a comparison of eddy covariance and static chamber measurements

Surface Flux Measurements of CO2 and N2O from a Dried Rice Paddy in Japan during a Fallow Winter Season

Thesis of N.A. Shnyrev: I. Micrometeorology and other notes

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Surface Flux Measurements of CO₂ and N₂O from a Dried Rice Paddy in Japan during a Fallow Winter Season