From Karen Aplin, Rutherford Appleton Laboratory
Paul Ratcliffe’s descriptions if cyclones and anticyclones are correct, but neither directly explains the observations. Helm Clayton’s 1901 model of a “cold-cored cyclone” was deduced from surface observations of a central minimum in pressure, cold central air, and cyclonic rotation. Our 1999 measurements found a cold outflow and Clayton’s cyclone, but we also reported weak anticyclonic flow at the centre. After a century, we unfortunately still lack numerical simulations of the three-dimensional eclipse cyclone’s structure.
