Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9463201 | Palaeogeography, Palaeoclimatology, Palaeoecology | 2005 | 13 Pages |
Abstract
Taking into account the ocean-atmospheric system affecting the region studied, here we propose an alternation in the mean state of North Atlantic Oscillation (NAO) at millennial time scales. A well-developed upwelling system and an active RÃa-ocean connection during the warmer interval I suggest a NAO+ phase influenced by a Hypsithermal period. The occurrence of the humid and relatively warm interval II is consistent with a negative phase in the NAO, as well as a relative restriction in ocean-RÃa exchange. Interval III, which was drier and more productive, again suggests the dominance of a positive phase in the NAO, with a more intense oceanic connection and more energized upwelling.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
M.C. Álvarez, J.A. Flores, F.J. Sierro, P. Diz, G. Francés, C. Pelejero, J. Grimalt,