HR: 17:45h
AN: OS44A-08    [Abstracts]
TI: The South Pacific Convergence Zone and Southern Hemisphere Teleconnections
AU: * Renwick, J A
EM: j.renwick@niwa.co.nz
AF: National Institute of Water and Atmospheric Research, Private Bag 14901 Kilbirnie, Wellington, 6241, New Zealand
AU: Salinger, M J
EM: j.salinger@niwa.co.nz
AF: National Institute of Water and Atmospheric Research, Private Bag 99940 Newmarket, Auckland, 1149, New Zealand
AU: Mullan, A B
EM: b.mullan@niwa.co.nz
AF: National Institute of Water and Atmospheric Research, Private Bag 14901 Kilbirnie, Wellington, 6241, New Zealand
AB: The South Pacific Convergence Zone (SPCZ) delineates the main region of quasi-persistent convection in the tropical southwest Pacific. Interannual variability in its location has a significant impact on precipitation and to a lesser extent on temperature variability across many southwest Pacific Island states. SPCZ variability is significantly linked to variations in the El Niņo-Southern Oscillation (ENSO) cycle, and to longer-scale variability in the Pacific characterised by the Interdecadal Pacific Oscillation (IPO, also known as the Pacific Decadal Oscillation). There also appear to be links between the SPCZ and higher latitude Southern Hemisphere circulation variability and the Southern Annular Mode. This presentation will review the nature of ENSO/IPO relationships with the SPCZ, and will discuss mechanisms for teleconnections with the SAM and the extratropical Southern Hemisphere circulation.
DE: 1616 Climate variability (1635, 3305, 3309, 4215, 4513)
DE: 1620 Climate dynamics (0429, 3309)
DE: 3305 Climate change and variability (1616, 1635, 3309, 4215, 4513)
DE: 3309 Climatology (1616, 1620, 3305, 4215, 8408)
DE: 3374 Tropical meteorology
SC: Ocean Sciences [OS]
MN: 2007 Fall Meeting