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Intergovernmental
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22 March 2001: Joint
IAPSO/IABO Assembly: 2001 An Ocean Odyssey ITEM: 009
Conveners Carlos Roberto Mechoso Edmo J. D. Campos Oceanic climate variability has well-documented impacts over South America on time scales ranging from intraseasonal to interdecadal. The El Niño/Southern Oscillation phenomenon is associated with rainfall and river streamflow anomalies in several regions of the continent. Sea surface temperature anomalies in the tropical and extratropical Atlantic Ocean have been linked to climate anomalies over the continent. A recent study suggests that ocean-induced variabilities of the summer monsoonal circulations over South America can influence the Northern Hemisphere. A better understanding of these climate impacts will improve the potential for predictability of the South American climate, which on interannual time scales or longer rests on the predictability of slow components of the climate system. This session will focus on a better understanding of the impacts of oceanic variability on the South American climate. Questions to be addressed include: What are the mechanisms through which the ocean can play a role on climate variability in South America? Do these mechanisms vary with season? Do SST anomalies in the extratropical south Atlantic play an active role or are they the passive response to similar anomalies in the Pacific, and to what extent are ocean-atmosphere interactions involved? Do oceanic anomalies lead to interannual and interdecadal modulations of the South American summer monsoon which drive remote climate anomalies? Does interannual (and longer) variability in the confluence of the Brazil and Malvinas current influence the atmosphere, and is ocean-atmosphere coupling important? Deadline for abstract submission: 6 April 2001. For more information on how to submit abstract and apply for financial help, go to: http://www.retina.ar/2001_ocean/ |
