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| Titel |
Automated ground-based remote sensing measurements of greenhouse gases at the Białystok site in comparison with collocated in situ measurements and model data |
| VerfasserIn |
J. Messerschmidt, H. Chen, N. M. Deutscher, C. Gerbig, P. Grupe, K. Katrynski, F.-T. Koch, J. V. Lavrič, J. Notholt, C. Rödenbeck, W. Ruhe, T. Warneke, C. Weinzierl |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 12, no. 15 ; Nr. 12, no. 15 (2012-08-01), S.6741-6755 |
| Datensatznummer |
250011354
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| Publikation (Nr.) |
 copernicus.org/acp-12-6741-2012.pdf |
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| Zusammenfassung |
| The in situ boundary layer measurement site in Białystok (Poland) has been
upgraded with a fully automated observatory for total greenhouse gas column
measurements. The automated Fourier Transform Spectrometer (FTS) complements
the on-site in situ facilities and FTS solar absorption measurements have
been recorded nearly continuously in clear and partially cloudy conditions
since March 2009. Here, the FTS measurements are compared with the collocated
tall tower data. Additionally, simulations of the Jena CO2 inversion model
are evaluated with the Białystok measurement facilities. The simulated
seasonal CO2 cycle is slightly overestimated by a mean difference of
1.2 ppm ± 0.9 ppm (1σ) in comparison with the FTS
measurements. CO2 concentrations at the surface, measured at the tall
tower (5 m, 90 m, 300 m), are slightly underestimated by −1.5 ppm,
−1.6 ppm, and −0.7 ppm respectively during the day and by −9.1 ppm,
−5.9 ppm, and −1.3 ppm during the night. The comparison of the
simulated CO2 profiles with low aircraft profiles shows a slight
overestimation of the lower troposphere (by up to 1 ppm) and an
underestimation in near-surface heights until 800 m (by up to 2.5 ppm). In
an appendix the automated FTS observatory, including the hardware components
and the automation software, is described in its basics. |
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