Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2013, Vol. 10, No. 1, pp. 72-80
Mesoscale structure of tropical cyclones
M.S. Permyakov
, E.Y. Potalova
V.I. Il’ichev Pacific Oceanological Institute FEB RAS, Vladivostok, Russia
The results of study of mesoscale structure of eight North-West Pacific tropical cyclones (TC) 2002–2007 y. are presented in the paper. The basic data was the surface wind velocity measurements of satellite QiukSCAT scatterometer (SeaWinds/QuikSCAT) and meteorological archive of Reanalysis JRA-25. Different stages of TC evolution – from initialization and development till rarely research transformation into extratropical cyclone and dissipation was under consideration. Mesoeddies associated with local maxims in surface wind vortexes fields. In all cases the appearance of the mesoscale eddies accumulation at the period 12–84 hours preceded of TC occurrence. It is shown that during TC formation intensity of mesoscale eddies generally increased, their amount decreased due merger and area, occupied by them, narrowed. The mesoeddies recession with their intensity reduction was observed during the TC dissipation stage.
Keywords: mesoscale atmospheric vortexes, tropical cyclones, scatterometers.
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