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Data -> VESPA-22

DATA AVAILABLE UPON REQUEST:

The water Vapor Emission Spectrometer for Polar Atmospheres at 22 GHz (VESPA-22)

 

Stratospheric water vapor (H2O) vertical profiles (see below for details).
Contact: giovanni.muscari@ingv.it

Period  
7 Jul - Present, 2016

Precipitable water vapor (PWV; see below for details).
Contact: giovanni.muscari@ingv.it

Period PWV
7 Jul - Present, 2016

Datasets Specifications.
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.

Vespa-22 H2O
Under validation

Vespa-22 PWV
Under validation