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Topic: North Atlantic current

Related Topics

North Atlantic Drift

Canary Current

North Atlantic

Gulf stream

Norwegian Sea

Global warming

Atlantic Ocean

Western Europe

Europe

Islands of the North Atlantic

British Isles

Celsius

Grand Banks

Wuriupranili

Geography of Ireland

	The North Atlantic Drift Current
		The N. Atlantic drift is the broad, northward flow of surface waters that replaces the sinking waters in the N. Atlantic polar seas.
		Because of the rapid advection of the North Atlantic gyre, the temperature of the surface waters of the NADC almost always exceeds that of both surrounding waters and the overlying atmosphere (Rossby, 1996).
		Several authors define the region that is occupied by the lethargic NADC as bounded by the cool Irminger current to its west, while its southern and eastern border is weakly constrained by the extension of the North Atlantic Current that bends northeastward, flanking the western edge of the Rockall Plateau.
	oceancurrents.rsmas.miami.edu /atlantic/north-atlantic-drift.html (1750 words)

	The North Atlantic Current
		Other transport estimates for the NAC include 35 Sv (ref leval 1900 m) (Krause et al., 1987); In his figure 15 the Gulf Stream is located at 40°N 50°W and the Slope Water current at 41°N 50°W. Fuglister (1963) considered this to be a typical situation and found a westerly countercurrent separating the two.
		Worthington had shown the NAC as part of a separate Northern gyre, however subsequent work later revealed that this hypothesis was incorrect and that the North Atlantic Current was indeed derived from the Gulf Stream.
		The North Atlantic Current is generally thought of as the end of the Gulf Stream, however it goes on to feed some of the major subarctic currents completing the poleward transport of tropical waters.
	oceancurrents.rsmas.miami.edu /atlantic/north-atlantic.html (1201 words)

	SIO 210: Introduction to Physical Oceanography
		The northward-flowing eastern boundary current is the Benguela Current.
		The eastern boundary current is the Peru Current.
		North Pacific Intermediate Water is formed from shelf water in the Okhotsk Sea, densified by brine rejection, mixed with North Pacific water in the Kuril Straits and including the low salinity surface waters of the Oyashio.
	www-pord.ucsd.edu /~ltalley/sio210/Wind_circulation_NAtl_SHem (4528 words)

	North Atlantic circulation and thermohaline forcing
		The deep thermohaline circulation of the Atlantic involves flow of waters from the southern hemisphere into the North Atlantic, modification and convection of these waters in the North Atlantic and its adjacent seas, and outflow in a thick deep layer.
		AAIW comes from the South Atlantic where nutrients are higher, and it so happens that it can be tracked through the Gulf Stream and on up into the subpolar North Atlantic through its silica, which is slightly higher than the North Atlantic silica.
		In the North Atlantic, the components of NADW are formed at three sites, all involving intermediate depth convection: inside the Mediterranean Sea, in the Labrador Sea and in the Greenland Sea.
	sam.ucsd.edu /sio210/lect_5/lecture_5.html (2998 words)

	Ocean in Motion: Currents - Charactersitics
		Countless currents have been named, but the seven major ones are the West Wind Drift (or the Antarctic Circumpolar Current), East Wind Drift, the North and South Equatorial currents, the Peru Current, the Kuroshio Current and the Gulf Stream.
		The Gulf Stream is a current with a strong influence on the East Coast of the United States.
		Actually, the Gulf Stream is part of a larger current system, which includes the North Atlantic Current, the Canary Current and the North Equatorial Current.
	www.onr.navy.mil /focus/ocean/motion/currents1.htm (315 words)

	Introduction to Physical Oceanography : Chapter 11 - Wind Driven Ocean Circulation - Observed Circulation in the ...
		Current meters deployed in the recirculation region show that the flow extends to the bottom.
		Currents calculated from the density distribution give only the baroclinic component of the flow, and they miss the component that is independent of depth, the barotropic component.
		Between the flow in the north and south Atlantic lies the equatorial circulation similar to the circulation in the Pacific.
	oceanworld.tamu.edu /resources/ocng_textbook/chapter11/chapter11_04.htm (1466 words)

	Isopycnal RAFOS Floats as Roving Hydrographers in the North Atlantic Current Region
		The NAC is the northward extension of the Gulf Stream: in its classical path it travels along the continental margin until Flemish Cap where it turns west int o the Northwest Corner (Krauss, 1986).
		The NAC marks the northernmost exte nt of the subtropical gyre and separates the cold fresh water of the subpolar gyre from the warm saline subtropical water.
		The major features of the NAC are see n in both the float-derived hydrography and the climatological mean: the shoaling (and cooling) to the west and north, the topographic control along the western boundary and the subpolar front as a more significant change in height than in temperature.
	www.aoml.noaa.gov /phod/accp/ag95/rafos.html (1210 words)

	Ocean Planet:Ocean Currents
		Currents flow in complex patterns affected by wind, the water's salinity and heat content, bottom topography, and the earth's rotation.
		Warm surface currents invariably flow from the tropics to the higher latitudes, driven mainly by atmospheric winds, as well as the earth's rotation.
		Western boundary currents are good examples of warm surface currents: they are warm and fast, and they move from tropical to temperate latitudes §.
	seawifs.gsfc.nasa.gov /OCEAN_PLANET/HTML/oceanography_currents_1.html (508 words)

	Ice Age ModuleNorth Atlantic Current (Site not responding. Last check: 2007-10-20)
		Northern Europe's hospitable climate is due to the North Atlantic current.
		Water has a remarkable heat capacity, and the North Atlantic Current is still 8¡ C when it reaches 60¡ north.
		Ocean currents are among the Earth's most important means of heat transport, and any change in their pattern can have an immediate impact on climate.
	jesse.usra.edu /articles/iceagemodule/iceagemodule-24.html (398 words)

	The North Atlantic Current Project
		The North Atlantic Current is being studied by a group of observationalists and modellers here at URI/GSO, with Dr.
		The objective of the RAFOS float program, jointly supported by the Office of Naval Research and the National Science Foundation, was to study the structure of the currents in the North Atlantic Currrent (NAC) region and the exchange of waters between the subtropical and subpolar gyres in the Newfoundland Basin.
		Isopycnal RAFOS floats as roving hydrographers in the North Atlantic Current region.
	www.po.gso.uri.edu /rafos/research/nac (677 words)

	Absolute transport of the North Atlantic Current at 42N and the circulation in the Newfoundland Basin
		The weak currents shown in the left panels, with peak velocities of only 60 cm/s, result from oblique crossings of the moored section by the North Atlantic Current.
		In the middle panel the eddy is nearly separate from the North Atlantic Current while in the bottom panel the two northward flows are completely coalesced, with peak velocities of over 160 cm/s.
		The North Atlantic Current and the northward flow of the Mann Eddy are generally indistinguishable, like the right top and bottom panels.
	www.po.gso.uri.edu /dynamics/NAC/woceposter/poster.html (2013 words)

	CRU Information Sheet no. 7: Thermohaline circulation
		It is warmer in the North Atlantic because warm water is brought by the thermohaline circulation from the tropical and South Atlantic.
		Increased rainfall and warming over the North Atlantic are both expected as a result of increased greenhouse gas concentrations, and so it can be argued that global warming may cause a rapid collapse of the thermohaline circulation.
		The northern North Atlantic and NW Europe have annual temperatures that are about 9 degrees C above the average for their latitude, but this cannot all be attributed to the THC, since the wind driven ocean circulation helps to transport heat to these regions too.
	www.cru.uea.ac.uk /cru/info/thc (792 words)

	North Atlantic current (Site not responding. Last check: 2007-10-20)
		The North Atlantic current is a powerful warm ocean current that continues the Gulf Stream northeast.
		One branch (the Canary current) goes south while the other continues North along the coast of northwestern Europe where it has a considerable warming influence on the climate.
		As the current is powered both by water temperature and salinity in the North Atlantic, such an increase of fresh water may pose a risk of disruption.
	north-atlantic-current.iqnaut.net (151 words)

	EO News: Satellites Record Weakening North Atlantic Current - April 15, 2004
		A North Atlantic Ocean circulation system weakened considerably in the late 1990s, compared to the 1970s and 1980s, according to a NASA study.
		The current, known as the sub polar gyre, has weakened in the past in connection with certain phases of a large-scale atmospheric pressure system known as the North Atlantic Oscillation (NAO).
		While previous studies have proposed winds resulting from the NAO have influenced the subpolar gyre’s currents, this study found heat exchanges from the ocean to the atmosphere may be playing a bigger role in the weakening current.
	earthobservatory.nasa.gov /Newsroom/NasaNews/2004/2004041516838.html (1027 words)

	North Atlantic Ocean freshening could weaken Gulf Stream
		Change in Atlantic circulation could plunge Europe into cold winters Massive climate change 55 million years ago caused major disruption to ocean currents according to new research by scientists at Scripps Institution of Oceanography at the University of California, San Diego.
		45% chance Gulf Stream current will collapse by 2100 finds research New research indicates there is a 45 percent chance that the thermohaline circulation in the North Atlantic Ocean could shut down by the end of the century if nothing is done to slow greenhouse gas emissions.
		Great flood disrupted ocean currents, cooled climate, finds new research Ocean circulation changes caused at the end of the past glacial period were more extensive than previously thought, according to new research scientists at the University of East Anglia and Cardiff University.
	news.mongabay.com /2006/0824-whri.html (1160 words)

	Gulf Stream Path
		Because of the Earth's rotation, the poleward flow in the western Atlantic is constrained to a narrow current on the western boundary of the ocean basin.
		The current is commonly referred to as the Loop Current while it's in the Gulf of Mexico and the Florida Current when it leaves the Gulf between Florida and Cuba.
		The North Atlantic Current then feeds both the Norwegian Current which transports water northward along the west coast of Europe and the Canary Current which flows equatorward on the eastern side of the Atlantic.
	kingfish.coastal.edu /marine/gulfstream/p2.htm (601 words)

	M10.htm (Site not responding. Last check: 2007-10-20)
		The major surface currents are wind generated (as most other oceanic currents are), creating a large clockwise gyre in the north Atlantic (the center of which is known as the Sargasso Sea), and a counterclockwise gyre in the south Atlantic.
		An equatorial countercurrent flows in the opposite direction of the adjacent currents of the major gyres.
		The warmer surface waters of the tropical Atlantic are about 500 meters deep, but are much shallower on the eastern side of the basin, and are underlain by the colder water masses that are typical worldwide.
	www.meer.org /M10.htm (113 words)

	Could failure of Atlantic current plunge Europe into cold winters?
		The Atlantic Ocean circulation that carries warm waters north and returns cold waters south is slowing, putting Europe at risk of colder temperatures, according to research published in Nature.
		The Atlantic Heat Conveyor, the system of currents in the Atlantic Ocean that result in a net transport of warm water into the northern hemisphere, keeps western Europe warmer than regions at similar latitudes in other parts of the world.
		Below are two news releases, one from the University of Southampton detailing the current study, and an earlier one from NASA looking at the slowing of currents in the Atlantic.
	news.mongabay.com /2005/1201-soton.html (1749 words)

	NASA - Satellites Record Weakening North Atlantic Current
		Ocean currents flow in complex patterns affected by wind, the water's salinity and heat content, changes in the ocean surface, and the Earth's rotation.
		The large blue region in the northern Atlantic represents a slowing of the cyclonically circulating gyre.
		One important current in the Atlantic is the sub polar gyre, created when warm, subtropical waters enter the northeastern Atlantic from the eastward extension of the Gulf Stream and circulate northward and westward in a counterclockwise motion near Iceland and the tip of Greenland.
	www1.nasa.gov /vision/earth/environment/North_Atlantic.html (763 words)

	Modeling the North Atlantic Circulation
		In the lower resolution cases the Gulf Stream separates from the coast well north of Cape Hatteras and is dominated by a tight anticyclonic circulation at the coast, a characteristic of many previous simulations (Dengg et al, 1996).
		In the lower resolution cases the distribution of variability reflects the biases in the mean path of the North Atlantic Current, and the variability in the vicinity of the Azores Current is missing.
		In: The Warmwatersphere of the North Atlantic Ocean.
	www.cgd.ucar.edu /oce/bryan/woce-poster.html (1441 words)

	PO Numerical Modeling-- Air-Sea Interactions in the Tropics
		Lew Rothstein are co-principal investigators of a combined observational and numerical investigation of the North Atlantic Current system in the Newfoundland Basin region of the North Atlantic.
		This deep flow is returning some of the North Atlantic Current transport of warm, salty surface water to the north, as cold, dense water flowing south, supplying deep water through the North and South Atlantic and into the Indian, Pacific, and Antarctic Oceans.
		The role of the meridional thermohaline circulation reflected in the DWBC on the North Atlantic Current separation behavior and the formation of the Azores Current from the Gulf Stream/North Atlantic Current is the current focus of my research.
	www.po.gso.uri.edu /Numerical/nac/nac.html (393 words)

	AWI: Arctic Ocean-Sea Ice Modelling Group
		The Gulf Stream/North Atlantic Current is a major supplier of heat for the higher latitude North Atlantic and the overlying atmosphere.
		It is speculated that variability of the North Atlantic Current (NAC) influences the weather in Northern Europe.
		The high-resolution coupled ocean-sea ice model shall be used to investigate the influence of the NAC.
	www.awi-bremerhaven.de /Modelling/ARCTIC/projects/nac/nac.html (227 words)

	North Atlantic Scuba
		The current ownership was established over twenty six years ago in 1979.
		Since 1973 North Atlantic Scuba has put well over one million pounds of air (the actual weight of the air itself) into scuba tanks.
		Today, North Atlantic Scuba has one of the largest selections of scuba and snorkeling equipment in New England (all of it competitively priced!).
	www.northatlanticscuba.com /aboutus.shtml (392 words)

	06/21/01 -- As North Atlantic current slows, concern rises (Site not responding. Last check: 2007-10-20)
		In broad terms, differences in sea water's heat and salt drive the formation of North Atlantic deep water, the subject of the study.
		They note that changes in North Atlantic thermohaline circulation, as the overall circulation regime is called, can vary widely over time scales ranging from decades to millenniums.
		More-conclusive results are likely to come, she continues, if researchers can deploy a series of remote-sensing buoys throughout the Atlantic to gauge not only what is happening at the surface, but at depth, over long periods of time.
	www.climateark.org /articles/2001/2nd/noatcurr.htm (686 words)

	William H. Calvin, "The Great Climate Flip-flop," THE ATLANTIC MONTHLY (January 1998)
		I hope never to see a failure of the northernmost loop of the North Atlantic Current, because the result would be a population crash that would take much of civilization with it, all within a decade.
		When the warm currents penetrate farther than usual into the northern seas, they help to melt the sea ice that is reflecting a lot of sunlight back into space, and so the earth becomes warmer.
		One is diminished wind chill, when winds aren't as strong as usual, or as cold, or as dry — as is the case in the Labrador Sea during the North Atlantic Oscillation.
	williamcalvin.com /1990s/1998AtlanticClimate.htm (6832 words)

	Hurricane Alley - North Atlantic
		The North Atlantic Ocean tropical cyclone basin is considered to be that area north of 0
		The area of the Atlantic basin observing the maximum number of hurricanes is near 29.0N, 75.5W, approximately 325 miles east of the central Florida east coast.
		This includes all data related to the current conditions in the tropical North Atlantic, Caribbean Sea, and Gulf of Mexico.
	www.hurricanealley.net /natl.html (267 words)

	North Atlantic Current - Wikipedia, the free encyclopedia
		The North Atlantic Current (North Atlantic Drift and the North Atlantic Sea Movement) is a powerful warm ocean current that continues the Gulf Stream northeast.
		Basically it is an extension of the Gulf Stream that goes further north and into the Arctic Sea.
		Climate change, especially global warming, may have a significant effect on the current.
	en.wikipedia.org /wiki/North_Atlantic_Current (147 words)

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