Recent data compilations of the early Last Interglacial period have indicated a bipolar temperature response at 130 ka, with colder-than-present temperatures in the North Atlantic and warmer-than-present temperatures in the Southern Ocean and over Antarctica. However, climate model simulations of this period have been unable to reproduce this response, when only orbital and greenhouse gas forci...

Intermediate water variability at multicentennial scales is documented by 340,000-year-long isotope time series from bottom-dwelling foraminifers at a mid-depth core site in the southwest Pacific. Periods of sudden increases in intermediate water production are linked with transient Southern Hemisphere warm episodes, which implies direct control of climate warming on intermediate water conversi...

The mechanism of thermocline ventilation is investigated using a global, high-resolution ocean GCM, with realistic topography and surface wind forcing. Because 2-dimensional representations of circulation can be misleading, the subsurface flow is examined by visualizing the trajectories of particles which subduct in the mid-latitudes and travel within the ventilated thermocline. Three model run...

Pore fluid chlorinity/salinity data from deep-sea cores related to the salinity maximum of the last glacial maximum (LGM) are analyzed using estimation methods deriving from linear control theory. With conventional diffusion coefficient values and no vertical advection, results show a very strong dependence upon initial conditions at 100 ky. Earlier inferences that the abyssal Southern Ocean wa...

[1] The distributions of deep ocean DC data are often used to illustrate the rate of deep ocean circulation. The associated conventional C ages show a difference of 1000 years between the North Atlantic and the Southern Ocean and a difference of another 1000 years between the Southern Ocean and the North Pacific. These differences may be interpreted directly and mistakenly as the timescale of c...

I report the discovery of a low frequency temperature oscillation in the eastern North Atlantic (NA), which was signi®cantly correlated with the Southern Oscillation Index (SOI) in the tropical Paci®c, but led the latter index by a number of months. This discovery is signi®cant, because it demonstrates a link between the tropical Paci®c and the high northerly latitudes which cannot readily be e...

Plants of the family Iridaceae are well represented in the grassland vegetation of southern Brazil, occurring in the Pampa and Atlantic Forest biomes. Nevertheless, little is known about the taxonomy and evolution of Iridaceae species in southern Brazil. The main goal of this review is to compile published information about South American Iridaceae, and to discuss the evolution and genetic dive...

A series of projects attempted to explore a southern perspective for global visual art. The South Project was a series of gatherings across the latitude to develop a southsouth network and conversation. This was followed by an intellectual push through Southern Theory to diversity academic frameworks beyond the trans-Atlantic. The application of this to visual arts was explored with the project...

Secular changes in regional storm tracking are examined as physical mechanisms for observed teleconnections between the New England hydroclimate and four predictor variables: the Southern Oscillation Index, the North Atlantic Oscillation, the Pacific Decadal Oscillation, and regional sea-surface temperatures. The main modes of New England winter precipitation, snowfall, and cyclone variability ...

The worldwide occurrence of complex climate-induced ecological shifts in marine systems is one of the major challenges in sustainable bio-resources management. The occurrence of ecological environment-driven shifts was studied in the Southern Caspian Sea using the "shiftogram" method on available fisheries-related (i.e. commercially important bentho-pelagic fish stocks) ecological and climatic ...