Low cost and state of the art methods to measure nitrous oxide emissions
This letter provides an overview of the available measurement techniques for nitrous oxide (N2O) flux measurement. It is presented to aid the choice of the most appropriate methods for different situations. Nitrous oxide is a very potent greenhouse gas; the effect of 1 kg of N2O is estimated to be equivalent to 300 kg of CO2. Emissions of N2O from the soil have a larger uncertainty compared to other greenhouse gases. Important reasons for this are low atmospheric concentration levels and enormous spatial and temporal variability. Traditionally such small increases are measured by chambers and analyzed by gas chromatography. Spatial and temporal resolution is poor, but costs are low. To detect emissions at the field scale and high temporal resolution, differences at tens of ppt levels need to be resolved. Reliable instruments are now available to measure N2O by a range of micrometeorological methods, but at high financial cost. Although chambers are effective in identifying processes and treatment effects and mitigation, the future lies with the more versatile high frequency and high sensitivity sensors.
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Format: | Journal Article biblioteca |
Language: | English |
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IOP Publishing
2013-06-01
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Subjects: | climate, agriculture, measurement, nitrous oxide, greenhouse gases, |
Online Access: | https://hdl.handle.net/10568/52090 https://doi.org/10.1088/1748-9326/8/2/025022 |
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dig-cgspace-10568-520902023-03-17T16:11:22Z Low cost and state of the art methods to measure nitrous oxide emissions Hensen A Skiba U Famulari D climate agriculture measurement nitrous oxide greenhouse gases This letter provides an overview of the available measurement techniques for nitrous oxide (N2O) flux measurement. It is presented to aid the choice of the most appropriate methods for different situations. Nitrous oxide is a very potent greenhouse gas; the effect of 1 kg of N2O is estimated to be equivalent to 300 kg of CO2. Emissions of N2O from the soil have a larger uncertainty compared to other greenhouse gases. Important reasons for this are low atmospheric concentration levels and enormous spatial and temporal variability. Traditionally such small increases are measured by chambers and analyzed by gas chromatography. Spatial and temporal resolution is poor, but costs are low. To detect emissions at the field scale and high temporal resolution, differences at tens of ppt levels need to be resolved. Reliable instruments are now available to measure N2O by a range of micrometeorological methods, but at high financial cost. Although chambers are effective in identifying processes and treatment effects and mitigation, the future lies with the more versatile high frequency and high sensitivity sensors. 2013-06-01 2014-12-16T06:37:31Z 2014-12-16T06:37:31Z Journal Article Hensen A, Skiba U, Famulari D. 2013. Low cost and state of the art methods to measure nitrous oxide emissions. Environmental Research Letters 8: 025022. 1748-9326 https://hdl.handle.net/10568/52090 https://doi.org/10.1088/1748-9326/8/2/025022 en CC-BY-3.0 Open Access IOP Publishing Environmental Research Letters |
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climate agriculture measurement nitrous oxide greenhouse gases climate agriculture measurement nitrous oxide greenhouse gases Hensen A Skiba U Famulari D Low cost and state of the art methods to measure nitrous oxide emissions |
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This letter provides an overview of the available measurement techniques for nitrous oxide (N2O) flux measurement. It is presented to aid the choice of the most appropriate methods for different situations. Nitrous oxide is a very potent greenhouse gas; the effect of 1 kg of N2O is estimated to be equivalent to 300 kg of CO2. Emissions of N2O from the soil have a larger uncertainty compared to other greenhouse gases. Important reasons for this are low atmospheric concentration levels and enormous spatial and temporal variability. Traditionally such small increases are measured by chambers and analyzed by gas chromatography. Spatial and temporal resolution is poor, but costs are low. To detect emissions at the field scale and high temporal resolution, differences at tens of ppt levels need to be resolved. Reliable instruments are now available to measure N2O by a range of micrometeorological methods, but at high financial cost. Although chambers are effective in identifying processes and treatment effects and mitigation, the future lies with the more versatile high frequency and high sensitivity sensors. |
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Journal Article |
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climate agriculture measurement nitrous oxide greenhouse gases |
author |
Hensen A Skiba U Famulari D |
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Hensen A Skiba U Famulari D |
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Hensen A |
title |
Low cost and state of the art methods to measure nitrous oxide emissions |
title_short |
Low cost and state of the art methods to measure nitrous oxide emissions |
title_full |
Low cost and state of the art methods to measure nitrous oxide emissions |
title_fullStr |
Low cost and state of the art methods to measure nitrous oxide emissions |
title_full_unstemmed |
Low cost and state of the art methods to measure nitrous oxide emissions |
title_sort |
low cost and state of the art methods to measure nitrous oxide emissions |
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IOP Publishing |
publishDate |
2013-06-01 |
url |
https://hdl.handle.net/10568/52090 https://doi.org/10.1088/1748-9326/8/2/025022 |
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AT hensena lowcostandstateoftheartmethodstomeasurenitrousoxideemissions AT skibau lowcostandstateoftheartmethodstomeasurenitrousoxideemissions AT famularid lowcostandstateoftheartmethodstomeasurenitrousoxideemissions |
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