The IMILAST intercomparison experiment was initiated involving 15 commonly used detection and tracking algorithms for extratropical cyclones reveals those cyclone characteristics that were robust between different schemes and those that differed considerably. All participating groups computed cyclone tracks for the same period using the same input, such as the European Center for Medium-Range Weather Forecasts (ECMWF) Interim Re-Analysis (ERA-Interim) dataset on whose results the first activity of the experiment was based. Space-time resolution of the input data had a significant impact on cyclone statistics. The experiment also revealed that high resolution was essential to help capture the full life cycles of cyclones and to ensure that small cyclonic windstorms were identified. Researchers used 1.5° spatial resolution and 6-hourly temporal resolution except for one method that used 12-hourly data for a 20-yr period ranging from January 1, 1989 to March 31, 2009.
IMILAST: A Community Effort to Intercompare Extratropical Cyclone Detection and Tracking Algorithms
LIONELLO, Piero;
2013-01-01
Abstract
The IMILAST intercomparison experiment was initiated involving 15 commonly used detection and tracking algorithms for extratropical cyclones reveals those cyclone characteristics that were robust between different schemes and those that differed considerably. All participating groups computed cyclone tracks for the same period using the same input, such as the European Center for Medium-Range Weather Forecasts (ECMWF) Interim Re-Analysis (ERA-Interim) dataset on whose results the first activity of the experiment was based. Space-time resolution of the input data had a significant impact on cyclone statistics. The experiment also revealed that high resolution was essential to help capture the full life cycles of cyclones and to ensure that small cyclonic windstorms were identified. Researchers used 1.5° spatial resolution and 6-hourly temporal resolution except for one method that used 12-hourly data for a 20-yr period ranging from January 1, 1989 to March 31, 2009.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
