Articles | Volume 8, issue 3
https://doi.org/10.5194/amt-8-1617-2015
https://doi.org/10.5194/amt-8-1617-2015
Research article
 | 
28 Mar 2015
Research article |  | 28 Mar 2015

Performance of WVSS-II hygrometers on the FAAM research aircraft

A. K. Vance, S. J. Abel, R. J. Cotton, and A. M. Woolley

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Short summary
Comparisons on the FAAM BAe 146-301 aircraft show good agreement between chilled mirror hygrometers and a WVSS-II fed from a modified Rosemount inlet (wvssR) in coud-free conditions, but a WVSS-II fed from the standard flush inlet (wvssF) over-reads, except at higher humidities. Case studies in cloudy conditions show that wvssF is immune to liquid water and ice, whilst wvssR is susceptible to both. Both WVSS-II inlets respond much more rapidly than the chilled mirror devices, especially wvssF.