TY  - JOUR
AU  - Neis, Patrick
AU  - Smit, Herman G.J.
AU  - Rohs, Susanne
AU  - Bundke, Ulrich
AU  - Krämer, Martina
AU  - Spelten, Nicole
AU  - Ebert, Volker
AU  - Buchholz, Bernhard
AU  - Thomas, Karin
AU  - Petzold, Andreas
TI  - Quality assessment of MOZAIC and IAGOS capacitive hygrometers: insights from airborne field studies
JO  - Tellus / B
VL  - 67
IS  - 0
SN  - 1600-0889
CY  - Stockholm
PB  - Inst.
M1  - FZJ-2015-06641
SP  - 28320, 1-11
PY  - 2015
AB  - In 2011, the MOZAIC (Measurement of Ozone by AIRBUS In-Service Aircraft) successor programme IAGOS (In-service Aircraft for a Global Observing System) started to equip their long-haul passenger aircraft with the modified capacitive hygrometer Vaisala HUMICAP® of type H. The assurance of the data quality and the consistency of the data set during the transition from MOZAIC Capacitive Hygrometers to IAGOS Capacitive Hygrometers were evaluated within the CIRRUS-III and AIRTOSS-ICE field studies. During these performance tests, the capacitive hygrometers were operated aboard a Learjet 35A aircraft together with a closed-cell Lyman-α fluorescence hygrometer, an open-path tunable diode laser (TDL) system and a closed-cell, direct TDL absorption hygrometer for water vapour measurement. For MOZAIC-typical operation conditions, the comparison of relative humidity (RH) data from the capacitive hygrometers and reference instruments yielded remarkably good agreement with an uncertainty of 5% RH. The temperature dependence of the sensor’s response time was derived from the cross-correlation of capacitive hygrometer data and smoothed data from the fast-responding reference instruments. The resulting exponential moving average function could explain the major part of the observed deviations between the capacitive hygrometers and the reference instruments.
T2  - MOZAIC-IAGOS 20th Anniversary Symposium
CY  - ,  ()
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000363415100001
DO  - DOI:10.3402/tellusb.v67.28320
UR  - https://juser.fz-juelich.de/record/276174
ER  -