Effects of a low‐level precursor and frontal stability on cyclogenesis during FASTEX IOP17

The Fronts and Atlantic Storm‐Track EXperiment (FASTEX) has provided comprehensive data to document the life‐cycle of secondary frontal cyclones over the North Atlantic, and to improve the understanding of cyclogenesis mechanisms. This study analyses the processes leading to the triggering of a particularly well‐sampled frontal cyclone that developed on the trailing cold front of a mature primary cyclone during FASTEX Intensive Observation Period 17 (IOP17) between 16 and 20 February 1997.

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