Sentences with phrase «overturning circulation time»

A reconstructed South Atlantic Meridional Overturning Circulation time series since 1870 (Geophysical Research Letters)

Not exact matches

Fig. 2 Time evolution of the Atlantic overturning circulation reconstructed from different data types since 1700.

Further detail: Thermohaline circulation or meridional overturning circulation (THC / MOC) act on different parts of the oceans, at different times of the year, at different amplitudes and frequencies.

In recent years research tied the Bølling - Allerød warming to the release of heat from warm waters originating from the deep North Atlantic Ocean, possibly triggered by a strengthening of the Atlantic meridional overturning circulation (AMOC) at the time.

A new study reconstructs a century - long South Atlantic Meridional Overturning Circulation index, from 1870 to present, finding it is highly correlated to the observational - based SAMOC time series and the Interdecadal Pacific Oscillation is the leading mode of variability.

The Atlantic Meridional Overturning Circulation (AMOC) is shown in the lower panels of Fig. 4 for each time slice.

An analysis of two coupled atmosphere - ocean general circulation models control runs (UK Met Office HadCM3 and NOAA GFDL CM2.1) agree with the shorter and longer time - scales of Atlantic Meridional Overturning Circulation (AMOC) and temperature fluctuations with periodicities close to thoscirculation models control runs (UK Met Office HadCM3 and NOAA GFDL CM2.1) agree with the shorter and longer time - scales of Atlantic Meridional Overturning Circulation (AMOC) and temperature fluctuations with periodicities close to thosCirculation (AMOC) and temperature fluctuations with periodicities close to those observed.

Palaeological evidence and simulation modelling show North Atlantic plankton biomass declining by 50 % over a long time - scale during periods of reduced Meridional Overturning Circulation (Schmittner, 2005).

Using chemical tracers in sediment that builds up on the sea floor over time, Henry and his co-authors were able to document the relative speed of the Atlantic meridional overturning circulation during each abrupt climate change.

Salinity in a short time will be equalized at surface and ocean floor where brine overturns and can never be a driver of the thermohaline circulation.

However, an assessment of transports at 48 ° N using five repeat World Ocean Circulation Experiment sections and air - sea heat and freshwater fluxes as input to an inverse box model yielded no significant trend in the meridional overturning at that latitude (Lumpkin et al., 2008), though the time period studied was relatively short (1993 - 2000).

Though many modeling studies have demonstrated the impact of deep water formation changes on the overturning circulation, the observational evidence for such a linkage has been hard to come by for two reasons: (1) Deep water formation is difficult to quantify because the time and locale of production are highly variable from winter to winter, and (2) overturning circulation measures require observations that span the basin, which have been limited in space and time.

Essentially you need to produce enough waste heat to generate current flows several times larger than that of the overturning circulation to be effective.

For the ice sheets the answer is probably no (but experts on the subject might have a better idea), but for the overturning circulation or the ecosystem changes, the answer is probably yes — i.e. a slower rate of warming could lead to a different response (allowing time for ocean mixing to mitigate the effects, or adaptation of species to the new conditions).

improve detection and attribution schemes to account for the models» inability to simulate the timing of phases of natural internal oscillations and the meridional overturning circulation.

Instead readers get The Silurian Hypothesis, a weaker Atlantic overturning circulation, Harde Times, Alsup asks for answers (and gets none), Rideau Canal Skateway, then More ice - out and skating day data sets.