Sentences with phrase «scale ocean upwelling»

That apparently is a very sensitive measure of the large scale ocean upwelling that will then perturb the surface temperature world - wide.

Not exact matches

The ocean factors included upwelling of nutrient - rich water and the Pacific Decadal Oscillation, a large - scale marine temperature pattern.

One idea is that this is related to PDO and how slight changes in the earth's rotation rate can set in motion large - scale upwellings in the ocean that reverse as the rotation accelerates and decelerates.

La Nina / PDO is a perfect example where changes in ocean currents / ocean upwelling affect heat transfer between the phases of the system (and cool the air)-- on a human time scale.

LTP / ocean upwelling can generate low - frequency anomalies that look like increasing trends over very short (relative to ocean circulation) time scales.

It is thought that the poor representation of ocean upwelling in current models has larger scale impacts reducing the accuracy of model projections on a global scale.

increased CO -LCB- sub 2 -RCB- by using ocean models that include realistic processes such as horizontal heat transport, vertical mixing due to convection and small - scale processes, and upwelling along coastal regions and the equator.

These considerations used to be accounted for in simplified models, notably upwelling diffusive ocean models which do exhibit the long tail and scaling of perturbation response times that are observed.

Environmental variables estimated over larger spatial and temporal scales included the upwelling index (UI) for 48 ° N, 125 ° W (http://www.pfeg.noaa.gov), an indicator of upwelling strength based on wind stress measurements, as well as the Pacific Decadal Oscillation (PDO, http://jisao.washington.edu/pdo/PDO.latest), a composite indicator of ocean temperature anomalies [33], seawater temperature from Buoy 46041 ∼ 50 km to the southwest from Tatoosh (www.ndbc.noaa.gov), and remote sensing of chl a (SeaWiFS, AquaModis).

These ocean upwelling conditions occur beneath a complementary downwelling branch of the atmosphere's Hadley circulation — a planetary - scale flow pattern in both hemispheres that takes humid air ascending at low latitudes, heats and desiccates it in deep precipitating tropical clouds, and then sinks it at midlatitudes, where it is considerably warmer and drier than it was.

The coastal upwelling is a rather stable feature of large scale ocean dynamics.

Scaled to the entire circumpolar current, the mixing we observe is compatible with there being a southern component to the global overturning in which about 20 sverdrups (1 Sv = 106 m3 s − 1) upwell in the Southern Ocean, with cross-density mixing contributing a significant fraction (20 to 30 per cent) of this total, and the remainder upwelling along constant - density surfaces.

Two modes of ocean circulation are considered: a thermohaline overturning cell, essentially vertical, which involves global scale upwelling into the surface followed by sinking in deep water formation regions; and an approximately horizontal cell which connects the abyss directly with deeply convecting waters in deep water formation regions.