International intercomparison of atmospheric hygrometers (AquaVIT2).

Fri, 14 Jun 2013 17:43:22 +0200
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In April 2013 50 scientists from 6 different countries participated with 36 different hygrometers in a blind refereed intercomparison including traceable references. The intercomparison covered conditions simulating the UT/LS (186-233 K, 0.2-1300 ppmv) with static periods and dynamic changes including ice clouds. AquaVIT-2 will help reducing instrument uncertainties in order to better quantify the important role of atmospheric water vapor in weather and climate systems.