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Water vapour measurements at Eureka

The Polar Environmental Atmospheric Research Laboratory (PEARL) near Eureka, Nunavut, Canada is equipped with a Bruker IFS 125HR Fourier transform infrared (FTIR) spectrometer, an instrument capable of precise measurements of many trace gases, including water vapour. The PEARL FTIR recently joined the Multi-platform remote Sensing of Isotopologues for investigating the Cycle of Atmospheric water (MUSICA) network. MUSICA endeavours to create a consistent, long-term, high-quality, and geographically-expansive observational dataset to help inform climate models and answer outstanding questions regarding the atmospheric water cycle. The research presented in this talk examines and evaluates the Canadian high-Arctic FTIR water vapour measurements taken between 2006 and 2011.