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《Chinese Journal of Geophysics》 2005-03
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A new view on the Ferrel cell

WANG Wen-Lan,WANG Yuan,WU Rong-Sheng Key Laboratory of Mesoscale Severe Weather, Ministry of Education, Nanjing University, Nanjing 210093, China  
There are many arguments in whether and how does the Ferrel cell exist because the upper level flow in the classical three-cell circulation model has been proved contradict with the modern observations that there are westerlies in the mid- and high- latitudes. By using the NCEP/NCAR (National Center for Environmental Prediction/National Center for Atmospheric Research) reanalysis of daily with the horizontal resolution of 1 0°×1 0° (lat./lon. grid), the representative Pacific area (0°~ 60°N, 160°E~120°W) in northern hemisphere summer (Jun-Jul-Aug) is chosen to analyse the 3-D wind field, according to which the mean meridional circulation of the lower and middle latitudes, especially the Ferrel cell, is studied and a new concept model of Ferrel cell is carried out. Compared with the classical model, the new one describes more precisely the low- and high- level winds and has the ability to describe how the westerlies sustain on the real rotating Earth.
【Fund】: 国家自然科学基金 (4 0 3 3 3 0 2 5 ;;40 175 0 2 5 )资助
【CateGory Index】: P434
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