Relation of Integral Moisture Content of the Atmosphere with Elements of General Atmosphere Circulation Over the Eurasian Continent Data over the period of 1979-2015

The paper presents a comparative analysis of the integral atmospheric moisture content (W) between the ERA-Interim reanalysis data and spectral sun-sky photometry of the international global network AERONET over the Eurasian continent. For the period 1979-2015 (end of XX - beginning of XI century) a correlation analysis was performed between W and the elements of the general circulation of the atmosphere (GCA), as well as the quasi-biennial oscillations (QBO) of the zonal wind in the equatorial stratosphere. The ERA-Interim reanalysis cells containing monthly average values with a latitude-longitudinal resolution of 0,125^o × 0 ,125^o around local stations of observation of sun-sky photometers of the AERONET network were selected and long-term climate indexes of the GCA were attracted: North Atlantic Oscillation (NAO), Arctic Oscillation (AO), North Pacific Oscillation (PNA) and El Niño - Southern Oscillation (ENSO - Nino 3.4). Information on average values (west Phase - negative values, east. Phase - positive) of the QBO index at the level of 30 Mbar was obtained according to NOAA/ESRL PSD. A comparative analysis of the average annual and average monthly W values between the AERONET and ERA-Interim network data over the Eurasian continent showed that there is a difference in average values, but at the same time there is a high correlation (over 0.8) indicating temporal consistency. The ERA-Interim reanalysis data are suitable for considering spatial and temporal changes of W. An analysis of the relationship of W with the GCA and the QBO of the zonal wind in the equatorial stratosphere over the period under consideration (1979-2015) indicates the predominance of the meridional atmospheric circulation over the Eurasian continent at the end of the XX - beginning XI century.

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