Dynamics of an ERICA (Experiment on Rapidly Intensifying Cyclones Over the Atlantic) Cyclone.

摘要

Cyclogenesis is studied during Intensive Observation Period (IOP) 2 from the Experiment on Rapidly Intensifying Cyclones over the Atlantic (ERICA) conducted in Winter 1988-89. The detailed synoptic discussion outlines the development of multiple cyclones in the western North Atlantic Ocean. The surface analyses with data included from ships, buoys, and east coast U.S. land stations resolve a dramatic rapid development case with a deepening rate of 30 mb/12h. A comparison of observed events with operational NMC Nested Grid Model and Global Spectral Model forecasts revealed skillful overall performance, however there were some deficiencies in handling details of the cyclogenesis event. Diagnostics of the case show destabilization occurring during the pre-cyclogenesis period and strong upper-level forcing for the rapidly developing center. Keywords: Theses, Atmospherics, Meteorology. (kt)