Deep water mass formed in the North Atlantic Ocean
North Atlantic Deep Water (NADW) is a deep water mass formed in the North Atlantic Ocean. Thermohaline circulation (properly described as meridional overturning circulation) of the world's oceans involves the flow of warm surface waters from the southern hemisphere into the North Atlantic. Water flowing northward becomes modified through evaporation and mixing with other water masses, leading to increased salinity. When this water reaches the North Atlantic, it cools and sinks through convection, due to its decreased temperature and increased salinity resulting in increased density. NADW is the outflow of this thick deep layer, which can be detected by its high salinity, high oxygen content, nutrient minima, high 14C/12C,[1] and chlorofluorocarbons (CFCs).[2]
CFCs are anthropogenic substances that enter the surface of the ocean from gas exchange with the atmosphere. This distinct composition allows its path to be traced as it mixes with Circumpolar Deep Water (CDW), which in turn fills the deep Indian Ocean and part of the South Pacific. NADW and its formation is essential to the Atlantic Meridional Overturning Circulation (AMOC), which is responsible for transporting large amounts of water, heat, salt, carbon, nutrients and other substances from the Tropical Atlantic to the Mid and High Latitude Atlantic.[3]
In the conveyor belt model of thermohaline circulation of the world's oceans, the sinking of NADW pulls the waters of the North Atlantic drift northward. However, this is almost certainly an oversimplification of the actual relationship between NADW formation and the strength of the Gulf Stream/North Atlantic drift.[4]
NADW has a temperature of 2-4 °C with a salinity of 34.9-35.0 psu found at a depth between 1500 and 4000m.
^Broecker, Wallace (1991). "The great ocean conveyor" (PDF). Oceanography. 4 (2): 79–89. doi:10.5670/oceanog.1991.07.
^"North Atlantic circulation and thermohaline forcing". Sam.ucsd.edu. Retrieved 9 January 2015.
^Schmitner, Andreas; et al. (2007). "Introduction: The Ocean's Meridional Overturning Circulation" (PDF). People.oregonstate.edu. Retrieved 9 January 2015.
^"Atlantic Ocean water masses". seis.natsci.csulb.edu. Archived from the original on 25 September 2008. Retrieved 24 January 2024.
and 28 Related for: North Atlantic Deep Water information
NorthAtlanticDeepWater (NADW) is a deepwater mass formed in the NorthAtlantic Ocean. Thermohaline circulation (properly described as meridional overturning...
thermohaline circulation, bringing salty water west from the Mediterranean Sea and then north to form the NorthAtlanticDeepWater. The gyre traps anthropogenic...
Mediterranean, and South Atlantic Intermediate Water. The NorthAtlanticdeepwater (NADW) is a complex of four water masses, two that form by deep convection in...
route, and eventually sinking at high latitudes (forming NorthAtlanticDeepWater). This dense water then flows into the ocean basins. While the bulk of it...
the upper layer of North Atlantic DeepWater. NorthAtlanticDeepWater flowing southward is integral to the Atlantic Meridional Overturning Circulation...
the densest waters, creating the densest region found in the NorthAtlanticDeepWater. The deepest waters of the Arctic Ocean are connected to the worlds...
so the water moves down and along the ocean floor. NorthAtlanticDeepWater (NADW) Circumpolar DeepWater (CDW) Antarctic Intermediate Water (AAIW) Subantarctic...
main inflows of NorthAtlanticDeepWater, accounting for around half of dense water overflow between the Nordic Seas and the NorthAtlantic. The dense and...
northward flow of warmer, fresher water in the upper layers of the Atlantic, and a southward flow of colder, saltier and deeper waters. These limbs are linked...
Oligocene onset of chilled NorthAtlanticdeepwater lies in the beginnings of sediment drift deposition in the NorthAtlantic, such as the Feni and Southeast...
dense water. (The convective action is similar to a lava lamp.) This downdraft of cold, dense water becomes a part of the NorthAtlanticDeepWater, a southgoing...
rates for deepwater located in the NorthAtlantic. Bomb-tritium also enters the deep ocean around the Antarctic. Most of the bomb tritiated water (HTO) throughout...
Bottom Water (roughly 34.7 psu) and saltier NorthAtlanticDeepWater. Antarctic Bottom Water can be distinguished from other intermediate and deepwater masses...
Gulf Stream, this warm and salty water contributes to the formation of deepwater in the NorthAtlantic. Surface water filaments are estimated to account...
route, and eventually sinking at high latitudes (forming NorthAtlanticDeepWater). This dense water then flows into the ocean basins. While the bulk of it...
believed to have disrupted the formation of NorthAtlanticDeepWater, the very saline, cold, deepwater that flows from the Greenland Sea. That interrupted...
a high school in Lincoln, Nebraska Labrador Sea Water, part of the NorthAtlanticDeepWaterwater mass Malikus Saleh Airport IATA code Liberty Seguros-Würth...
major source of the NorthAtlanticDeepWater, a cold water mass that flows at great depth along the western edge of the NorthAtlantic, spreading out to...
subject to wind forcing. With a closed Drake Passage, there is no NorthAtlanticDeepWater (NADW) cell, and no ACC. With a shallower Drake Passage, a weak...
The NorthAtlantic Current (NAC), also known as NorthAtlantic Drift and NorthAtlantic Sea Movement, is a powerful warm western boundary current within...
of the Atlantic meridional overturning circulation by compensating for the NorthAtlantic downwelling by upwelling of NorthAtlanticDeepWater and connects...
the LGM by Glacial NorthAtlantic Intermediate Water (GNAIW) relative to its present-day ventilation by upper NorthAtlanticDeepWater (NADW). GNAIW was...
distinguished from other parts of the Atlantic Ocean by its characteristic brown Sargassum seaweed and often calm blue water. The sea is bounded on the west...
Stuart (2003). "Chapter 7: Arctic oceanography; the path of NorthAtlanticDeepWater" (PDF). Regional oceanography : an introduction (2nd ed.). Delhi:...
not immediately involve radiation. NorthAtlanticDeepWater One of the water masses of the ocean. NorthAtlantic oscillation An atmospheric climate mode...
picta (Crustacea: Anomura: Eumunididae), on western NorthAtlanticdeep-water coral habitats". Deep Sea Research Part I: Oceanographic Research Papers...