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Por favor, use este identificador para citar o enlazar este ítem:
http://hdl.handle.net/1834/499
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| Título : | The Characteristics of Signal versus Noise SST Variability in the North Pacific and the Tropical Pacific Ocean |
| Autor : | Yeh, S.W.
Kirtman, B.P. |
| ASFA Terms: | Atmosphere (earth) |
| Fecha de publicación : | 2002 |
| Editorial : | Center for Ocean-Land-Atmosphere Studies |
| Citación : | COLA Technical Report |
| Resumen : | Total SST in a coupled GCM is diagnosed by separating the variability into signal
variance and noise variance. The signal and the noise is calculated from multi-decadal
simulations from the COLA anomaly coupled GCM and the interactive ensemble model
by assuming both simulations have a similar signal variance. The interactive ensemble
model is a new coupling strategy that is designed to increase signal to noise ratio by using
an ensemble of atmospheric realizations coupled to a single ocean model. The procedure
for separating the signal and the noise variability presented here does not rely on any ad
hoc temporal or spatial filter. Based on these simulations, we find that the signal versus
the noise of SST variability in the North Pacific is significantly different from that in the
equatorial Pacific. The noise SST variability explains the majority of the total variability
in the North Pacific, whereas the signal dominates in the deep tropics. It is also found that
the spatial characteristics of the signal and the noise are also distinct in the North Pacific
and equatorial Pacific. |
| URI : | http://hdl.handle.net/1834/499 |
| Aparece en las colecciones: | Miscellaneous
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