Naslov
30-day integrations using the operational ECMWF spectral model

Autori
Tibaldi, S. ; Brankovic, C ; Cubasch, U.

Izvornik
ECMWF Technical Memorandum 138

Vrsta, podvrsta
Ostale vrste radova, izvještaj

Godina
1987

Ključne riječi
monthly forecasts; ECMWF; systematic errors

Sažetak
It has become necessary to diagnose model systematic errors over a longer forecast range and dependence upon season and model resolution. Zonal mean and mid-latitude errors are dependent strongly upon the lower end of the resolution spectrum. Tropospheric errors can be described as a poleward displacement of the main jet maxima with equivalent barotropic structure. In the tropics, a progressive loss of the vertical shear in zonal wind occurs. The 30-day mean forecast fields are almost consistently better than persistence.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA