Intraseasonal tropical variability in an intermediate complexity atmospheric model |
| |
| Authors: | D Yu Gushchina B Dewitte S A Korkmazova |
| |
| Institution: | (1) Global Modeling and Assimilation Office, NASA/Goddard Space Flight Center, Mail Code 610.1, Greenbelt, MD 20771, USA;(2) School of Ocean and Earth Science and Technology, International Pacific Research Center, University of Hawaii at Manoa, Honolulu, HI 96822, USA |
| |
| Abstract: | The convective equatorial waves in the NCEP/NCAR reanalysis and intermediate complexity atmospheric model QTCM are studied
on the base of double space-time spectral analysis. The frequency-wavenumber spectra of outgoing longwave radiation, precipitation,
zonal wind stress and net heat flux are obtained. Further, the propagation characteristics, amplitude and seasonal variability
of filtered waves are analyzed. It is shown that QTCM simulates a wide variety of equatorial waves that share many characteristics
with the observations. It is suggested that convective scheme applied in the model allows for simulation of interaction at
interannual-intraseasonal time scales. The role of interannual SST forcing and extratropical excitation is elucidated using
the model’s experiments with specific boundary conditions. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
