Articles | Volume 11, issue 2
Atmos. Meas. Tech., 11, 1099–1117, 2018
https://doi.org/10.5194/amt-11-1099-2018

Special issue: Twenty-five years of operations of the Network for the Detection...

Atmos. Meas. Tech., 11, 1099–1117, 2018
https://doi.org/10.5194/amt-11-1099-2018

Research article 23 Feb 2018

Research article | 23 Feb 2018

VESPA-22: a ground-based microwave spectrometer for long-term measurements of polar stratospheric water vapor

Gabriele Mevi et al.

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Short summary
In July 2016, a new ground-based 22 GHz spectrometer for measuring lower and middle atmospheric water vapor was installed at the Thule High Arctic Atmospheric Observatory located at Thule Air Base (76.5° N, 68.8° W), Greenland. The spectrometer, VESPA-22, is designed to operate automatically with little maintenance. The intercomparison between VESPA-22 dataset and the satellite-based Microwave Limb Sounder dataset shows an average difference within 1.4 % up to 60 km altitude.