Climatological vertical features of hadley circulation depicted by the NCEP/NCAR, ERA40, NCEP-DOE, JRA25, Era-interim, and CFSR reanalyses

Abstract

The climatological features of the pole-ward, equator-ward edges, and the width of the tropical Hadley Cell (HC) during the annual cycle in each hemisphere are studied based on six reanalyses datasets (i.e., NCEP/NCAR, NCEP-DOE, ERA40, JRA25, ERA-Interim, and CFSR). The result indicates that the amplitude of HC in the Northern Hemisphere (NH) is much intense than that in the Southern Hemisphere (SH). And the amplitude of equator- ward edge is much larger than that of the pole-ward edges in both hemispheres. In addition, it is found that the ERA40, CFSR (for the pole-ward edge of HC in the SH) and JRA25 (for the poleward edge of the HC in the NH) show big inconsistency comparing with the other datasets in depicting the locations of pole-ward edges of HC.