Articles | Volume 11, issue 2
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, Giovanni Muscari, Pietro Paolo Bertagnolio, Irene Fiorucci, and Giandomenico Pace

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Cited articles

Bertagnolio, P. P., Muscari, G., and Baskaradas, J.: Development of a 22 GHz ground-based spectrometer for middle atmospheric water vapor monitoring, Eur. J. Remote Sens., 45, 51–61,, 2012. 
Cazzoli, G., Puzzarini, C., Buffa, G., and Tarrin, O.: Experimental and theoretical investigation on pressure-broadening and pressure-shifting of the 22.2 GHz line of water, J. Quant. Spectrosc. Ra., 105, 438–449,, 2007. 
de Zafra, R. L.: The ground-based measurement of stratospheric trace gases using quantitative millimeter wave emission spectroscopy, in: Diagnostic Tools in Atmospheric Physics: Varenna on Lake Como, Villa Monastero, 22 June–2 July 1993, edited by: Fiocco, G. and Visconti, G., Società Italiana di Fisica, 23–54, 1995. 
Eriksson, P., Buehler, S. A., Davis, C. P., Emde, C., and Lemke, O.: ARTS, the atmospheric radiative transfer simulator, version 2, J. Quant. Spectrosc. Ra., 112, 1551–1558,, 2011. 
Fleming, E. L., Chandra, S., Barnett, J. J., and Corney, M.: Zonal mean temperature, pressure, zonal wind, and geopotential height as functions of latitude, COSPAR International Reference Atmosphere: 1986, Part II: Middle Atmosphere Models, Adv. Space Res., 10, 11–59,, 1990. 
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.