Characteristics of the TIGGE multimodel ensemble prediction system in representing forecast variability associated with extratropical transition

J. H. Keller, S. C. Jones, J. L. Evans, P. A. Harr

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

The characteristics of the extratropical transition (ET) of tropical cyclones and its impact on the midlatitude flow are examined in the THORPEX Interactive Grand Global Ensemble (TIGGE) multimodel ensemble prediction system (EPS). Ten ensemble forecasts initialized prior to ET for five tropical cyclones in 2008 are investigated using an empirical orthogonal function analysis and fuzzy clustering methodology. Each forecast contains 231 members from eight different global EPS. The EPS contributing to TIGGE differ in their spread and their contributions to the different scenarios. Some of the individual EPS are generally confined to only a few scenarios, whereas others contribute regularly to almost all. TIGGE contains more development scenarios than European Centre for Medium Range Weather Forecast (ECMWF) EPS but the full range of development scenarios is only found with the ECMWF included in the multimodel EPS.

Original languageEnglish (US)
Article numberL12802
JournalGeophysical Research Letters
Volume38
Issue number12
DOIs
StatePublished - Jun 1 2011

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Characteristics of the TIGGE multimodel ensemble prediction system in representing forecast variability associated with extratropical transition'. Together they form a unique fingerprint.

  • Cite this