Sensitivity of typhoon-induced gravity waves to cumulus parameterizations

So Young Kim, Hye Yeong Chun, Jong Jin Baik

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Sensitivity of typhoon-induced gravity waves to cumulus parameterizations is examined using a mesoscale model (MM5). For this, Typhoon Rusa (2002) is simulated with four cumulus parameterizations (Kain-Fritsch, Grell, Anthes-Kuo, and Betts-Miller schemes) and the characteristics of typhoon-induced gravity waves are compared. The experiments show differences in rainband structure and vertical motion, resulting in different forcing spectra for zonal wavelength and period. As a result, induced stratospheric gravity waves are different in amplitude and spectral shape. However, the difference is not as large as that in the forcing spectrum, since a large portion of the waves generated by major forcing components is filtered out by the background wind, which is nearly the same in all the experiments. Instead, variation in zonal wavelength and period of forcing modifies the characteristics of stratospheric gravity waves by changing damping time scale in the nonfiltered region.

Original languageEnglish
Article numberL15814
JournalGeophysical Research Letters
Volume34
Issue number15
DOIs
Publication statusPublished - 2007 Aug 16

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Sensitivity of typhoon-induced gravity waves to cumulus parameterizations'. Together they form a unique fingerprint.

  • Cite this