In this paper we studied variations of atmospheric integral water vapor obtained by the phase measurement of satellite navigation system receivers. Comparison with the numerical weather reanalysis fields and solar photometer measurements showed agreement with a relative deviation of less than 10%. Intraseasonal processes with scales from 3 to 45 days significantly contribute to variations in atmospheric integral water vapor content; its amplitude is 1–4 kg/m2. Variations with periods from 3 to 10 days are the most often.
remote sensing, satellite navigation system, integral water vapour, synoptic variations