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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2017, Vol. 14, No. 7, pp. 299-307

Characteristics of high-altitude jet fluxes of the Northern and Southern Hemispheres inferred from satellite data

A.F. Nerushev 1 , R.V. Ivangorodsky 1 
1 Research and Production Association «Typhoon», Obninsk, Russia
Accepted: 15.06.2017
DOI: 10.21046/2070-7401-2017-14-7-299-307
Presented are the results of investigation of spatiotemporal variability of jet fluxes basic characteristics in the upper troposphere of the Northern and Southern Hemispheres based on processing of satellite data over the 2007–2016 ten-year period. The data of atmospheric soundings in the water vapor channel of 6.2 micrometers obtained by the SEVIRI radiometer of the European geostationary meteorological satellites of the second generation were used as the basic information. The jet fluxes were determined from computations of the wind field in the upper troposphere according to the motion of atmospheric tracers — heterogeneities of water vapor concentrations. Interannual variability of jet fluxes basic characteristics (average surface area, maximum wind speed, geographical location of jet flux centers, gradients (shifts) of wind speed, etc.) along with their annual trend were analyzed. Main laws and significant differences in the characteristics in the Northern and Southern Hemispheres were revealed. It was shown that the tendency of jet fluxes characteristics variability during the ten-year period considered was practically the same in both Hemispheres, but the trends are significantly different. At the same time, the values of significant trends of the majority of characteristics in the Southern Hemisphere were (by times) greater.
Keywords: jet fluxes, the Northern and Southern hemispheres, linear trends, geostationary satellites, the upper troposphere, wind fields, atmospheric tracers
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