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| Titel |
Comprehensive laboratory and field testing of cavity ring-down spectroscopy analyzers measuring H2O, CO2, CH4 and CO |
| VerfasserIn |
C. Yver Kwok, O. Laurent, A. Guemri, C. Philippon, B. Wastine, C. W. Rella, C. Vuillemin, F. Truong, M. Delmotte, V. Kazan, M. Darding, B. Lebègue, C. Kaiser, I. Xueref-Remy, M. Ramonet |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 8, no. 9 ; Nr. 8, no. 9 (2015-09-23), S.3867-3892 |
| Datensatznummer |
250116583
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| Publikation (Nr.) |
 copernicus.org/amt-8-3867-2015.pdf |
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| Zusammenfassung |
| To develop an accurate measurement network of greenhouse gases,
instruments in the field need to be stable and precise and thus
require infrequent calibrations and a low consumption of
consumables. For about 10 years, cavity ring-down spectroscopy
(CRDS) analyzers have been available that meet these stringent
requirements for precision and stability. Here, we present the
results of tests of CRDS instruments in the laboratory (47
instruments) and in the field (15 instruments). The precision and
stability of the measurements are studied. We demonstrate that,
thanks to rigorous testing, newer models generally perform better
than older models, especially in terms of reproducibility between
instruments. In the field, we see the importance of individual
diagnostics during the installation phase, and we show the value of
calibration and target gases that assess the quality of the
data. Finally, we formulate recommendations for use of these
analyzers in the field. |
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