Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2014, Vol. 11, No. 1, pp. 45-53
Characteristics of the upper tropospheric jet fluxes inferred from the data of European geostationary meteorological satellites
R.V. Ivangorodsky
1 , A.F. Nerushev
1 1 Research and Production Association «Typhoon», Obninsk, Russia
An automatic method of determining the characteristics of jet fluxes (the regions with the horizontal wind speed V ≥ 30 m/s) based on computations of wind fields in the upper troposphere inferred from the atmospheric tracers motion is presented. On the basis of processing the radiometer SEVIRI data in water vapor channel of 6,2 micrometers obtained on board the European geostationary meteorological satellites Meteosat-9 and Meteosat-10 during 2012–2013, studied were the spatial distribution of jet fluxes in the satellites surveillance zones and intrannual variability of their characteristics (the surface area, maximum wind speed along the axis, effective lifetime, etc.) in the upper troposphere of the Northern and Southern hemispheres. The effective lifetime means the time period when some jet fluxes integral characteristics are conserved within certain limits. The regions of the jet fluxes most probable localization, general regularities of their interseasonal variability and the differences in jet fluxes of the Northern and Southern hemispheres were determined. A practically total similarity of interseasonal variability of the characteristics considered with the account of the Sun astronomical position and a significant difference in the jet fluxes number and the surface area were found in both hemispheres.
Keywords: jet fluxes, geostationary satellites, upper troposphere, wind fields, atmospheric tracers
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