A large single-year reversal in the phase of the North Atlantic Oscillation (NAO) during 1996 led to a dramatic shift in the slope-water circulation patterns of the northwest (NW) Atlantic. Analyses of time-series data collected from the region over the past half century show that both physical and biological responses are commonly elicited by such phase reversals in the NAO. Here, we use a mod...

High productivity (maxima B3 g C m 2 day ) of the Eastern Boundary Currents (EBCs), i.e. the California, PeruHumboldt, Canary and Benguela Currents, is driven by a combination of local forcing and large-scale circulation. The characteristics of the deep water brought to the surface by upwelling favorable winds depend on the large-scale circulation patterns. Here we use a new hydrographic and nu...

[1] Model hindcasts of the Columbia River (CR) plume and coastal ocean circulation in summer 2004 are used to describe the subtidal evolution of plume patterns in response to local wind and to examine the plume influence on shelf circulation. It is found that a bi-directional plume occurs frequently on the Washington/Oregon shelf, during weak upwelling favorable wind events, during weakening of...

Atmospheric circulation patterns are currently classi ed manually according to subjective schemes, such as the Lamb catalogue of circulation patterns centred on the United Kingdom. However, the sheer volume of data produced by General Circulation Models, used to investigate the e ects of climatic change, makes this approach impractical for classifying predictions of the future climate. Furtherm...

Using the coupled climate model CLIMBER3a, we investigate changes in sea surface elevation due to a weakening of the thermohaline circulation (THC). In addition to a global sea level rise due to a warming of the deep sea, this leads to a regional dynamic sea level change which follows quasi-instantaneously any change in the ocean circulation. We show that the magnitude of this dynamic effect ca...

Abstract. Despite local emission reductions, severe haze events remain a serious issue in Beijing. Previous studies have suggested that both greenhouse gas increases and aerosol decreases are likely to increase the frequency of weather patterns conducive events. However, combined effect atmospheric circulation changes precursor on Beijing remains unclear. We use Shared Socioeconomic Pathways (S...

Century-scale climate changes reshaped circulation patterns over the North Atlantic and adjacent regions during the last glacialto-interglacial transition. Here, we show that vegetation across eastern North America shifted dramatically at the beginning and end of the Younger Dryas chronozone (YDC: 12,900–11,600 cal yr B.P.), when changes in ocean circulation rapidly cooled and then warmed the N...