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| Titel |
Performance of WVSS-II hygrometers on the FAAM research aircraft |
| VerfasserIn |
A. K. Vance, S. J. Abel, R. J. Cotton, A. M. Woolley |
| 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. 3 ; Nr. 8, no. 3 (2015-03-28), S.1617-1625 |
| Datensatznummer |
250116236
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| Publikation (Nr.) |
 copernicus.org/amt-8-1617-2015.pdf |
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| Zusammenfassung |
We compare the performance of five hygrometers fitted to the Facility for
Airborne Atmospheric Measurement's (FAAM) BAe 146-301 research aircraft using
data from approximately 100 flights executed over the course of 2
years under a wide range of conditions. Bulk comparison of cloud free data
show good agreement between chilled mirror hygrometers and a WVSS-II fed from
a modified Rosemount inlet, but that a WVSS-II fed from the standard flush
inlet appears to over-read compared to the other instruments, except at
higher humidities.
Statistical assessment of hygrometer performance in cloudy conditions is
problematic due to the variable nature of clouds, so a number of case studies
are used instead to investigate the performance of the hygrometers in sub-optimal conditions. It is found that the flush inlet is not susceptible to
either liquid or solid water but that the Rosemount inlet has a significant
susceptibility to liquid water and may also be susceptible to ice. In all
conditions the WVSS-II responds much more rapidly than the chilled mirror
devices, with the flush inlet-fed WVSS-II being more rapid than that
connected to the Rosemount. |
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