link to homepage

Institute of Energy and Climate Research

Navigation and service


Development and Evaluation of Novel Compact Hygrometer for Airborne Research

DENCHAR is a research project to develop and characterise novel or improved compact airborne hygrometers for different airborne applications within EUFAR (European Facility for Airborne Research); including investigation of the sampling characteristics of different gas/ice inlets and development of an improved ultra fast thermometer for near- and in-cloud measurements.

As a so-called joint research activity is DENCHAR part of the EUFAR-“Integrating Project” funded by the European Commission in the 7th Frame Programme. DENCHAR-project is coordinated by IEK-8.


Accurate and reliable airborne measurements of water vapour are a pre-requisite to study the underlying processes in the chemistry and physics of the atmosphere. Presently, no airborne humidity sensor exists that covers the entire range of water vapour content between the surface and the upper troposphere/lower stratosphere (UT/LS) region with sufficient accuracy and time resolution, not to speak of the technical requirements for quasi-routine operation.

DENCHAR addresses this deficit by developing and characterizing novel or improved compact hygrometers, including the sampling characteristics of different gas/ice inlets, and integrating an ultra-fast temperature sensor for measurements of water vapour super saturation in clouds. The activity follows a unique strategy by facilitating new instrumental developments together with extensive testing, both in the laboratory and in-flight, including routine operation.