Eddy covariance carbonyl sulfide flux measurements with a quantum cascade laser absorption spectrometer
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چکیده
منابع مشابه
Suitability of quantum cascade laser spectroscopy for CH4 and N2O eddy covariance flux measurements
A quantum cascade laser spectrometer was evaluated for eddy covariance flux measurements of CH4 and N2O using three months of continuous measurements at a field site. The required criteria for eddy covariance flux measurements including continuity, sampling frequency, precision and stationarity were examined. The system operated continuously at a dairy farm on peat grassland in the Netherlands ...
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Better quantification of atmosphere-ecosystem exchange of the isotopologues of CO2 could substantially improve our ability to probe underlying physiological and ecological mechanisms controlling ecosystem carbon exchange, but the ability to make long-term continuous measurements of the isotopic composition of exchange fluxes has been limited by measurement difficulties. Quantum cascade (QC) las...
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A compact and transportable three channel quantum cascade laser system (TRIPLE Q) based on mid-infrared absorption spectroscopy has been developed for time-resolved plasma diagnostics. The TRIPLE Q spectrometer encompasses three independently controlled quantum cascade lasers (QCLs), which can be used for chemical sensing, particularly for gas phase analysis of plasmas. All three QCLs are opera...
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Introduction Conclusions References
متن کاملCarbonyl sulfide detection with a thermoelectrically cooled midinfrared quantum cascade laser.
A compact absorption spectrometer with a midinfrared tunable quantum cascade laser operating at 4.86 microm (2054 cm(-1)) is used to measure lower concentrations of carbonyl sulfide (COS) in air. A detection sensitivity of approximately 30 parts in 10(9) of COS and the selectivity of two stable isotopes, 12C(16)O32S and 12C(16)O34S, are demonstrated. Specifically, the feasibility of detecting C...
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ژورنال
عنوان ژورنال: Atmospheric Measurement Techniques
سال: 2017
ISSN: 1867-8548
DOI: 10.5194/amt-10-3525-2017