Search results
Results from the WOW.Com Content Network
Mode water is defined as a particular type of water mass, which is nearly vertically homogeneous. [1] Its vertical homogeneity is caused by the deep vertical convection in winter. The first term to describe this phenomenon is 18° water , which was used by Valentine Worthington [ 2 ] to describe the isothermal layer in the northern Sargasso Sea ...
In most humid subtropical climates, summer is the wettest season. In summer, the subtropical high pressure cells provide a sultry southernly flow of tropical air with high dew points, and frequent (but brief) convective showers are common.
Buoyancy-forced downwelling, often termed convection, is the deepening of a water parcel due to a change in the density of that parcel.Density changes in the surface ocean are primarily the result of evaporation, precipitation, heating, cooling, or the introduction and mixing of an alternate water or salinity source, such as river input or brine rejection.
Sub-Antarctic Mode Water [1] (SAMW) is an important water mass in Earth's oceans. It is formed near the Sub-Antarctic Front on the northern flank of the Antarctic Circumpolar Current . The surface density of Sub-Antarctic Mode Water ranges between about 1026.0 and 1027.0 kg/m 3 , and the core of this water mass is often identified as a region ...
The opposite is applicable when Ekman divergence is induced, leading to Ekman absorption (suction) and a subsequent, water column stretching and poleward return flow, a characteristic of sub-polar gyres. This return flow, as shown by Stommel, [1] occurs in a meridional current, concentrated near the western boundary of an ocean basin. To ...
The three main drivers that work together to cause upwelling are wind, Coriolis effect, and Ekman transport. They operate differently for different types of upwelling, but the general effects are the same. [6] In the overall process of upwelling, winds blow across the sea surface at a particular direction, which causes a wind-water interaction.
The driving force behind the vertical velocity is the Ekman transport, which in the Northern (Southern) hemisphere is to the right (left) of the wind stress; thus a stress field with a positive (negative) curl leads to Ekman divergence (convergence), and water must rise from beneath to replace the old Ekman layer water.
The advent water must have gone back to the east by some means. The Sverdrup balance can partly explain where the water ends up at. When the NEC and the SEC reached the west end of a basin, some of the water travels poleward to join the low-latitude circulations, while some travels equatorward to join the Equatorial Counter Current.