Fig. 2: Non-axisymmetry index Ia of mesoscale eddies and its determinant factors.
From: Doubling of surface oceanic meridional heat transport by non-symmetry of mesoscale eddies
a The probability density function (PDF) histogram of non-axisymmetry index defined by \({I}_{a}=a/b\). The x-axis represents \({I}_{a}\) and the y-axis is the corresponding probability density function as a function of \({I}_{a}\). The vertical dash line represents the average value of \({I}_{a}\), which is 1.55. b Global distribution of the non-axisymmetry index \({I}_{a}\) constructed by averaging with a \(1^\circ \times 1^\circ\) moving window. c Globally-averaged curve of index \({I}_{a}\) as a function of normalized eddy radius by Rhines Scale (\({R}_{n}=R/{L}_{R}\)). The data is removed in the area near the equator where the geostrophic balance does not hold. d Globally-averaged curve of index \({I}_{a}\) as a function of Rossby number (Ro) of eddies. Blue curve in each subfigure represents the average value and gray shading represents the error bar computed by the standard error of average. Source data are provided as a Source Data file.
