The water Vapor Emission Spectrometer for Polar Atmospheres at 22 GHz
Middle Atmospheric Water vapor Profiles (MAWP).
Integrated Water Vapor (IWV).
Vespa-22 observes the pure rotational transition line of H2O at 22.235 GHz. Depending on atmospheric opacity (season/weather conditions) spectra are integrated for 6, 12 or 24 hours in order to reach a noise level that allows for the retrieval of concentration vertical profiles. The line inversion is performed by means of an Optimal Estimation algorithm. The uncertainty in the retrieved stratospheric and mesospheric water vapor profiles are due to different sources: instrument calibration, data scaling, forward model parameters, measurements noise and smoothing errors.
Mevi et al., 2018
Muscari et al., in preparation