Research Article

The Influences of the Model Configuration on the Simulation of Stratospheric Northern-Hemisphere Polar Vortex in the CMIP5 Models

Figure 7

The EP flux cross section of planetary waves (vectors) and its divergence (contours) for (a) ERA40, (b) CMIP5 7ME (ensemble of the 7 models with HTOP, NOG, HVer, and HHor), (c) CMIP5 OME (ensemble of the other models except the above models), (d) the difference between CMIP5 7ME and ERA40, (e) the difference between CMIP5 OME and ERA40, and (f) the difference between CMIP5 7ME and CMIP5 OME. The fluxes are scaled by the inverse of the air density and the units are kg s−2. The EP flux divergence contour interval is 0.6 m s−1 day−1.