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| Titel |
Evaluation of new laser spectrometer techniques for in-situ carbon monoxide measurements |
| VerfasserIn |
C. Zellweger, M. Steinbacher, B. Buchmann |
| 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 ; 5, no. 10 ; Nr. 5, no. 10 (2012-10-30), S.2555-2567 |
| Datensatznummer |
250003133
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| Publikation (Nr.) |
 copernicus.org/amt-5-2555-2012.pdf |
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| Zusammenfassung |
| Long-term time series of the atmospheric composition are essential for
environmental research and thus require compatible, multi-decadal monitoring
activities. The current data quality objectives of the World Meteorological
Organization (WMO) for carbon monoxide (CO) in the atmosphere are very
challenging to meet with the measurement techniques that have been used
until recently. During the past few years, new spectroscopic techniques came
to market with promising properties for trace gas analytics. The current
study compares three instruments that have recently become commercially
available (since 2011) with the best currently available technique (Vacuum
UV Fluorescence) and provides a link to previous comparison studies. The
instruments were investigated for their performance regarding repeatability,
reproducibility, drift, temperature dependence, water vapour interference
and linearity. Finally, all instruments were examined during a short
measurement campaign to assess their applicability for long-term field
measurements. It could be shown that the new techniques perform considerably
better compared to previous techniques, although some issues, such as
temperature influence and cross sensitivities, need further attention. |
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