Publikationsdatum:
2011-11-29
Beschreibung:
Influence of parallel computational uncertainty on simulations of the Coupled General Climate Model Geoscientific Model Development Discussions, 4, 3295-3312, 2011 Author(s): Z. Song, F. Qiao, X. Lei, and C. Wang This paper investigates the impact of the parallel computational uncertainty on climate simulations using the Community Climate System Model Version 3 (CCSM3). A series of sensitivity experiments have been conducted and the analyses are focused on the Global and Nino3.4 sea surface temperatures. It is shown that the amplitude of the deviation induced by the parallel computational uncertainty is the same order as that of the climate system change. However, the ensemble mean method can reduce the influence and the ensemble member number of 15 is enough to ignore simulated errors. For climatology, the influence can be ignored when the climatological mean is calculated by using more than 30-yr simulations. It is also found that the parallel computational uncertainty has no effect on the simulated periods of climate variability such as ENSO. Finally, it is suggested that the influence of the parallel computational uncertainty on Coupled General Climate Models (CGCMs) can be a quality standard or a metric for developing CGCMs.
Print ISSN:
1991-9611
Digitale ISSN:
1991-962X
Thema:
Geologie und Paläontologie
