Arctic Cyclone Track Data Set, 1966-1993

This data set comprises a 28-year record (1 May 1966 through 31 December 1993) of twice-daily extra tropical cyclone statistics for the Northern Hemisphere. Data were obtained from application of the updated Serreze (1995) algorithm to National Meteorological Center (NMC) sea level pressure (SLP) fields for the 47x51 octagonal grid. The data set includes the position and central pressure of each cyclone, whether the observation represents a cyclogenesis or cyclolysis event (from the first and last observation of each system), and the local Laplacian (105 mb m-2) and sea level pressure tendency (SLPT) (mb (12h-1)) at each cyclone center.