INVESTIGADORES
MENENDEZ Claudio Guillermo
artículos
Título:
On the relationship between SAM and frost days as represented by an ensemble of IPCC AR4 models
Autor/es:
MENÉNDEZ C.G. AND A.F. CARRIL
Revista:
CLARIS News
Editorial:
CLARIS Project
Referencias:
Lugar: Buenos Aires; Año: 2006 p. 21 - 25
ISSN:
1669-3264
Resumen:
The main interest of this research relies on the influence of the SAM on extreme weather events in the southern extratropics. In this preliminary study, we have documented some aspects of an extreme temperature indicator (the number of frost days) as simulated by a subset of the AR4 models. In particular, we have illustrated its association with the SAM and its response to climate change, as these are critically important aspects for understanding climate trends and projections in the southern extratropics. Our results highlight the fact that, though there is a general decrease in the number of frost days with global warming, the changes in regional atmospheric circulation associated with the SAM certainly influence the pa�ern of changes in this extreme index. However, other several interrelated physical processes not analysed here (e.g. feedbacks with soil moisture over land or with sea ice over ocean), could also contribute to the pa�ern of changes in the number of frost days.
