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| Titel |
Intercomparison of aircraft instruments on board the C-130 and Falcon 20 over southern Germany during EXPORT 2000 |
| VerfasserIn |
N. Brough, C. E. Reeves, S. A. Penkett, D. J. Stewart, K. Dewey, J. Kent, H. Barjat, P. S. Monks, H. Ziereis, P. Stock, H. Huntrieser, H. Schlager |
| 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 ; 3, no. 6 ; Nr. 3, no. 6 (2003-12-03), S.2127-2138 |
| Datensatznummer |
250001345
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| Publikation (Nr.) |
 copernicus.org/acp-3-2127-2003.pdf |
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| Zusammenfassung |
| In the summer 2000 EXPORT aircraft campaign (European eXport of Precursors and Ozone
by long-Range Transport), two comprehensively instrumented research aircraft
measuring a variety of chemical species flew wing tip to wing tip for a period of one and
a quarter hours. During this interval a comparison was undertaken of the measurements
of nitrogen oxide (NO), odd nitrogen species (NOy), carbon monoxide (CO) and ozone
(O3). The comparison was performed at two different flight levels, which provided a 10-fold
variation in the concentrations of both NO (10 to 1000 parts per trillion by volume
(pptv)) and NOy (200 to over 2500 pptv). Large peaks of NO and
NOy observed from the Falcon 20, which were at first thought to be from the exhaust of the C-130, were also
detected on the 4 channel NOxy instrument aboard the C-130. These peaks were a good
indication that both aircraft were in the same air mass and that the Falcon 20 was not in
the exhaust plume of the C-130. Correlations and statistical analysis are presented
between the instruments used on the two separate aircraft platforms. These were found to
be in good agreement giving a high degree of correlation for the ambient air studied. Any
deviations from the correlations are accounted for in the estimated inaccuracies of the
instruments. These results help to establish that the instruments aboard the separate
aircraft are reliably able to measure the corresponding chemical species in the range of
conditions sampled and that data collected by both aircraft can be co-ordinated for
purposes of interpretation. |
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