This is the first continuous record of hydrographic variability (SST; δ18Osw) from the Agulhas Current core region spanning the past 270,000 years. The data set ...Jul 19, 2017 · The Agulhas Current also plays a critical role in global ocean circulation which is why it’s considered important for climatic conditions across the world. This is due to a process known as the Agulhas Leakage. The current flows along the east coast of South Africa and then turns back on itself flowing into the Indian Ocean. The Agulhas Current system has been described as one of the strongest western boundary currents, in the world's oceans, which can reach speeds of up to 2 m/s (Johannessen et al., 2008). The Agulhas Current is a relatively narrow current about 100 km wide that carries warm tropical and subtropical water southward.Feb 20, 2017 · The Agulhas Current is important to South Africa for a variety of reasons. Studying how it impacts the coast has been difficult using traditional methods. But gliders are changing that. in the Agulhas Current (stars) compared to calculated profiles from a numerical model 509 for the region, all for the period 1993–1996. Figure 6.2. Superimposed thermal borders of the southern Agulhas Current, Agulhas retroflection and Agulhas Return Current, for a period of one year 91. These data are from declouded images in the thermal ... The Agulhas Current system is realistically simulated by BRAN2020, but the representation of Agulhas leakage has not been analyzed in detail 67. It is noteworthy that, in contrast to the non ...The Agulhas Current Modelled results show the eddy-rich region corresponding to the Agulhas Current shifting westward and poleward as warming continues (Fig. 2c ).The Agulhas Current system has been described as one of the strongest western boundary currents, in the world's oceans, which can reach speeds of up to 2 m/s (Johannessen et al., 2008). The Agulhas Current is a relatively narrow current about 100 km wide that carries warm tropical and subtropical water southward.The Agulhas Current transports warm and salty waters from the tropical Indian Ocean to the southern tip of Africa. There most of the water loops around to …work suggests that changes of the Southern Hemisphere (SH) winds led to an increase in Agulhas leakage and a corresponding salinification of the Atlantic.18 Citations. 61 Altmetric. Metrics. Abstract. Mesoscale ocean eddies, an important element of the climate system, impact ocean circulation, heat uptake, gas …The Agulhas Return Current is an ocean current in the South Indian Ocean. The ARC contributes to the water exchange between oceans by forming a link between ...This is the first continuous record of hydrographic variability (SST; δ18Osw) from the Agulhas Current core region spanning the past 270,000 years. The data set ...The influence of the Agulhas Current on the wave field is investigated. The study is conducted by performing high resolution spectral wave model simulations with and without ocean currents. The validation of the numerical simulations is performed for the Significant Wave Height (Hs) using all possible satellite altimetry data available in the …Abstract Strong upwelling events inshore of the Agulhas Current close to 33.5°S are investigated. These events are important to the exchange of shelf and slope waters, potentially enhancing primary productivity and advecting larvae offshore. Using hydrographic observations, this study shows that a wind-driven upwelling event and a …Jul 19, 2017 ... The Agulhas Current transports warm tropical Indian Ocean water southwards along the South African coast. It modulates the rainfall along the ...May 8, 2018 · Agulhas current Part of the large-scale circulation of the southern Indian Ocean. It is a surface-water current that flows off the east coast of southern Africa between latitudes 25°S and 40°S in a south-westerly direction. Flow velocity varies seasonally between 0.2 and 0.6 m/s. A Dictionary of Ecology MICHAEL ALLABY. Agulhasströmmen, "Agulhas Current", synes längst ner till vänster. Agulhasströmmen är en varm havsström i Indiska oceanen, som från ekvatorn följer Sydafrikas kust sydvästvart i en fart av 3 till 4 knop. Strömmen är till del en direkt fortsättning på Moçambiqueströmmen. Vid Kap Agulhas på Afrikas sydspets möter den ...Mar 16, 2009 · The Agulhas Current influences rainfall patterns and weather systems in southern Africa. A part of the warm waters are transported around South Africa into the South Atlantic and influence the ... Throughout the Agulhas Current at central and intermediate depths waters are cooler in summer and this is due to the upward tilt of the isopycnals, consistent with stronger geostrophic transport. Seasonality is also evident at depth, where North Atlantic Deep Water has a stronger equatorward flow during winter when the Agulhas Current is …The Agulhas Return Current ( ARC) is an ocean current in the South Indian Ocean. The ARC contributes to the water exchange between oceans by forming a link between the South Atlantic Current and the South Indian Ocean Current. [1] It can reach velocities of up to 4 knots (7.4 km/h; 4.6 mph) and is therefore popular among participants in trans ... The Agulhas Return Current ( ARC) is an ocean current in the South Indian Ocean. The ARC contributes to the water exchange between oceans by forming a link between the South Atlantic Current and the South Indian Ocean Current. [1] It can reach velocities of up to 4 knots (7.4 km/h; 4.6 mph) and is therefore popular among participants in trans ... The Agulhas Current constitutes the strongest western boundary SST data are collected from the Seviri instrument onboard current of the Southern Hemisphere, if not of the world the Meteosat Second Generation satellite and are processed [Bryden et al., 2005]. The Agulhas Current can be divided by the French ERS Processing and Archiving Facility ...The Agulhas Current is known to transport heat and salt from the warm tropics to the cooler (sub-)polar regions, but little is known of its nutrient fluxes. Here we use new measurements of the essential phytoplankton nutrient, nitrate, and its isotope ratios to better characterize water circulation and the nitrogen cycle in the Agulhas Current ...The Agulhas Current influences rainfall patterns and weather systems in southern Africa. A part of the warm waters are transported around South Africa into the South Atlantic and influence the ...For example, off the coast of South Africa, wave trains frequently encounter the strong Agulhas current, causing the waves to become even steeper. Scientists continue to study rogue waves, which remain very difficult to predict. One concern is that rogue waves may become more common as Earth’s climate changes. Our planet is in a …Jan 1, 2006 · The Agulhas Current (yellow arrow in the inset of Figure 1) is the western bound- ary current of the Indian Ocean and extends to water depths greater than 2,000 m (de Ruijter et al., 1999 ... Nov 4, 2019 · The Agulhas Current is a western boundary current that brings warm water south to meet the cold Southern Ocean, fuelling storms and creating dangerous conditions for yachts. Learn from a meteorologist how to plan your passage around the current, when to avoid it and what to do if you encounter it. The Indian equatorial current flows from east to west between 10°Sand 15°S latitudes from Australian coast to African coast. After being obstructed by Madagascar this current is divided into many branches. One major branch flows southward in the name of Agulhas current (warm) while the other branch is directed towards the north. 5.Agulhas Current RMS of Sea Height. The root-mean-square (rms) of sea height over the Agulhas Current retroflection region between November 1992 and December 2004. The bathymetry contours are superimposed. The time-series of geostrophic transport of the Agulhas Current is estimated across a selected transect (green line).The Agulhas Current introduces Indian Ocean water masses into the Retroflection region, though this is limited to water less dense than sigma-φ of 27.5, ...Feb 4, 2022 ... Presenter: Laura Braby (Egagasini Node) Title: Rough seas- never before seen measurements of the Agulhas Current Abstract: Seasonal changes ...In this review, current knowledge of these Agulhas rings and their contribution to both the therinohaline circulation and the local oceanography is summarized.Agulhas current: a warm, fast-moving high-saline current that moves southward down the east coast, its flow directed by topography. As you can see, the Algulhas breaks from South Africa’s coastline at Port Elizabeth and begins its anticyclonic path, turning back (retroflecting) into the Indian Ocean, while spiraling off in select zones along ...Oct 22, 2019 ... The second episode of our series aboard the vessel SA Agulhas II focuses on the Agulhas Current and its role in global ocean circulation.The Agulhas Current on the east coast of South Africa is a major western boundary current that exchanges heat and salt between the Indian and South Atlantic Oceans. The current retroflects as it deflects away from the African continent at the southern tip of the Agulhas Bank, a biologically productive extension of the continental shelf south of ...The Agulhas Current provides an ideal natural laboratory to test new remote sensing products such as the ASAR range-directed surface current velocities. With a mean transport of about 70 Sverdrup (1 Sverdrup = 10 6 m 3.s −1) and surface current speeds at times greater than 2 m s −1, ...On 7 April, the Agulhas Current borders the coast, with an SST of 26°C 18 km from the coast (station 2). At the same time, offshore temperatures are as low as 21°C 302 km from the coast (station 20). By April 9, the AC is still found inshore but is much broader due to the offshore intrusion by the meander crest. Inshore SST 18 km from the ...ulhas Current and a southern Agulhas Current. These two parts have distinctly different trajectorial behaviours. 2.1 Northern Agulhas Current The northern Agulhas Current has been shown to be quite re-markable as a western boundary current for its invariant path. This is evident in Fig. 2. The current core can be seen to fol-The Agulhas Leakage is an inflow of anomalously warm and saline water from the Indian Ocean into the South Atlantic due to the limited latitudinal extent of the African continent compared to the southern extension of the subtropical super gyre in the Indian Ocean. [1] The process occurs during the retroflection of the Agulhas Current via ... The Agulhas Current is one of the major currents of the world ocean. In the network of currents that connect the major ocean basins, it forms a key link. This linkage may be of critical importance in the way the ocean affects the earth's climate and climate change. Based on the research findings of 60 years, the author describes the origins of …The greater Agulhas Current has been shown to be a key link in the global thermohaline circulation and an increased understanding of this current system is therefore of more than just local interest. Knowledge on the Agulhas Current system has in fact increased enormously over the past 30 years. This review covers some aspects of what has been ...The Agulhas Current, like other western boundary currents (WBCs), transports nutrients laterally from the tropics to the subtropics in a subsurface “nutrient stream.” These nutrients are predominantly supplied to surface waters by seasonal convective mixing, to fuel a brief period of productivity before phytoplankton become …Learn about the Agulhas Current, a powerful current that flows from Antarctica to the Cape of Good Hope, where it meets the Benguela upwelling zone. See a false-color …Jun 1, 2005 · Using a year-long moored array of current meters and well-sampled synoptic sections, we define the variability and mean structure and transport of the Agulhas current. Nineteen current meter records indicate that time scales for the temporal variability in the alongshore and offshore velocities are 10.2 and 5.4 days, respectively. Good vertical correlation exists between the alongshore or ... Agulhas leakage into the Atlantic ocean via the Benguela Current through the Agulhas eddy corridor [Garzoli and Gordon, 1996] is thought to be pivotal to Indian-Atlantic exchange of heat and salt, which is a key component of the global thermohaline circulation pattern [Gordon, 2003; Biastoch et al., 2008a]. Its global significance has thus …The ruler of the east is the Agulhas Current, the African equivalent of the Gulf Stream, sliding southward at up to five miles an hour (eight kilometers an hour) and shifting warm Indian Ocean ...Apr 29, 2021 · For the Agulhas Current region, the high density of vessel traffic can provide new means to study and monitor intense upper ocean currents with more detailed resolution and precision. Key Points The high density of vessel traffic and associated Automatic Identification System messages provide means to derive the oceanic surface current Jul 12, 2018 · Agulhas Current circulation, location of Crossroads (CR) hydrographic stations and distribution of samples: (A) A map of the sampling area overlaid with the Crossroad cruise track (black line) and ... The Agulhas Current introduces Indian Ocean water masses into the Retroflection region, though this is limited to water less dense than sigma-φ of 27.5, ...Nov 9, 2016 ... The Agulhas Current has not intensified since the early 1990s, but has instead broadened as a result of more eddy activity.Jun 18, 2009 · The main loop is found south of the continent; the Retroflection is located in the domain delimited by 10°E to 20°E and 36°S to 41°S; eddies shed from the Agulhas Current are usually formed in the Retroflection region and move northwestwards in the Eddy Corridor [Garzoli and Gordon, 1996]; the Agulhas Return Current flows eastwards and ... Mar 28, 2017 · The large disparity in these transport estimates is evidence of the huge impact the Agulhas has on the Benguela Current. Agulhas leakage into the Atlantic ocean via the Benguela Current through the Agulhas eddy corridor [Garzoli and Gordon, 1996] is thought to be pivotal to Indian-Atlantic exchange of heat and salt, which is a key component of ... Interpretation of the fossil record, based on the analysis of modern faunal analogs, indicates that during glacial intervals the Agulhas Current was not the ...Agulhas Current RMS of Sea Height. The root-mean-square (rms) of sea height over the Agulhas Current retroflection region between November 1992 and December 2004. The bathymetry contours are superimposed. The time-series of geostrophic transport of the Agulhas Current is estimated across a selected transect (green line).Oct 22, 2019 ... The second episode of our series aboard the vessel SA Agulhas II focuses on the Agulhas Current and its role in global ocean circulation.The Agulhas Current is the major western boundary current of the Southern Hemisphere [Lutjeharms, 2006] and a key component of the global ocean “conveyor” circulation controlling the return ...Abstract The marine atmospheric boundary layer (MABL) response to sea surface temperature (SST) perturbations with wavelengths shorter than 30° longitude by 10° latitude along the Agulhas Return Current (ARC) is described from the first year of SST and cloud liquid water (CLW) measurements from the Advanced Microwave Scanning …Abstract The influence of meridional shift of the oceanic subtropical front (STF) on the Agulhas Current (AC) regime shifts is studied using satellite altimeter data and a 1.5-layer ocean model. The satellite observations suggest the northward shift of the STF leads to the AC leaping across the gap with little Agulhas leakage, and the southward …Jan 1, 2006 · The Agulhas Current (yellow arrow in the inset of Figure 1) is the western bound- ary current of the Indian Ocean and extends to water depths greater than 2,000 m (de Ruijter et al., 1999 ... The Agulhas Return Current is an ocean current in the South Indian Ocean. The ARC contributes to the water exchange between oceans by forming a link between ...The Agulhas Current is the strongest western boundary current of the Southern Hemisphere. The aim of this thesis is to understand the impact of ocean-atmosphere interaction in the Agulhas Current ...Agulhas Current and the Natal Pulse The Agulhas Current is the principal western boundary current of the Southern Hemisphere. It is thought to be driven predominantly by the intense sub-gyral circulation of the Southwest In- dian Ocean (Harris, 1972; Lutjeharms, 1976) with smaller, and probably discontinuous, inputs from the …Feb 22, 2023 · The Agulhas Current (AC) is the strongest western boundary current in the Southern Hemisphere and plays a critical role in the climate system (Beal et al., 2011). Originating from the Mozambique Channel and the Southeast Madagascar Current, the AC transports around 76 Sv of warm water poleward (Beal et al., 2015; McMonigal et al., 2020). Apr 11, 2010 ... The sardines are following the Agulhas Current -- one of the strongest ocean currents in the world. It flows along the African coast from ...1. Introduction [2] The Agulhas Current (AC) is the most intense western boundary current of the southern hemisphere and a key component of the global climate [Beal et al., 2011].Despite its importance at both global and regional scales, little remains known of the AC's variability with an ongoing debate on its seasonality.The Agulhas Current (AC) western boundary system is unique, in that it retroflects, with a small portion of the current feeding into the South Atlantic in the form of Agulhas Rings and filaments (estimates ranging from 10–40 Sv, (Gordon, 1986, Speich et al., 2001, van Sebille et al., 2010, Richardson, 2007)) and the majority of the current ...Abstract Strong upwelling events inshore of the Agulhas Current close to 33.5°S are investigated. These events are important to the exchange of shelf and slope waters, potentially enhancing primary productivity and advecting larvae offshore. Using hydrographic observations, this study shows that a wind-driven upwelling event and a …Figure 28. Agulhas Current and Agulhas Retroflection (south of Africa) and associated currents and eddies (from Peterson and Stramma, 1991; after Lutjeharms ...The Agulhas Leakage is an inflow of anomalously warm and saline water from the Indian Ocean into the South Atlantic due to the limited latitudinal extent of the African continent compared to the southern extension of the subtropical super gyre in the Indian Ocean. [1] The process occurs during the retroflection of the Agulhas Current via ...Dec 13, 2021 · The Agulhas Current (AC)—the subtropical western boundary current of the Southern Indian Ocean (e.g., Imawaki et al., 2013; Lutjeharms, 2006)—flows poleward along the eastern coast of South Africa with a mean volume transport up to 84 Sv (1 Sv = 10 6 m s −3) and the maximum surface velocity exceeding 2 m s −1 (Beal & Bryden, 1999; Beal ... 1 Introduction. The Agulhas Current (AC) is the strongest western boundary current (WBC) of the Southern Hemisphere, with an average transport of 70 sverdrup and current speeds in excess of 2 m s −1 [Beal et al., 2011].As it flows southward along the continental shelf break, the AC influences the oceanography of coastal and shelf regions …The Agulhas Current is the strongest western boundary current of the Southern Hemisphere. The aim of this thesis is to understand the impact of ocean-atmosphere interaction in the Agulhas Current ...Feb 28, 2014 · This animation from Jan 2011 to Dec 2013 shows high resolution sea surface temperature (SST) in the Agulhas Retroflection off South Africa. Clearly visible in the Agulhas animation are the eddies that form as a result of the retroflection of the current. These eddies can shed or spin off the main current and travel into the South Atlantic. The MUR SST dataset combines data from the Advanced ... work suggests that changes of the Southern Hemisphere (SH) winds led to an increase in Agulhas leakage and a corresponding salinification of the Atlantic.Feb 14, 2014 ... This visualization from January 1, 2011 to December 31, 2013 shows sea surface temperatures (SST) associated with the Agulhas Current near ...It has been observed a closed correlation between the transport of this current and the shedding of rings (Goni et al, JMR, vol.55, 861-883, 1997). Monitoring both the Agulhas transport into the South Atlantic in the upper kilometer of the ocean and the number of rings shed at its retroflection provides a means of detecting any substantial ... The Agulhas Current influences rainfall patterns and weather systems in southern Africa. A part of the warm waters are transported around South Africa into the South Atlantic and influence the ...Sep 28, 2021 · South of Africa, the eastward turning Agulhas Current sheds Agulhas rings, cyclones and filaments of order 100 km that carry the Indian Ocean water into the Cape Basin and further into the Atlantic. May 21, 2013 · The surface of the modern-day southern Agulhas Current experiences annual temperature variations averaging around 21 °C during winter months and 26 °C during summer months with a mean annual ... The Agulhas Current is the strongest southern hemisphere western boundary current, transporting around 70 Sverdrup (Sv, 1Sv = 10 6 m 3 s −1; Beal & Bryden, 1999) of warm Indian Ocean water along the …Agulhas current - Glossary of Meteorology. navigation search. Agulhas Current. ( Also called Agulhas stream.) The major western semi of the subtropical gyre …Sep 21, 2022 · The Agulhas Current is a powerful and complex ocean current system in the Indian Ocean, off the coast of South Africa, that influences local weather and climate in the Southern Hemisphere and beyond. However, its long-term monitoring and research are hampered by a lack of data, funding and resources, and the current is not well understood by the global scientific community. Jan 27, 2017 · Cape Agulhas, Africa’s southernmost point, is Portuguese for Cape of Needles. Historians think the name may be a reference to the needle-like rock formations and reefs along its coast. The convergence of two ocean currents—one warm and one cold—in the shallow waters of Agulhas Bank produces turbulent and unpredictable waters. Mar 16, 2009 · The Agulhas Current influences rainfall patterns and weather systems in southern Africa. A part of the warm waters are transported around South Africa into the South Atlantic and influence the ... May 9, 2023 ... A reduction in the strength of the Agulhas Current is linked to a reduction in precipitation along the southeast coast. The Agulhas leakage, the ...When this happens, the curved current narrowly focuses the wave’s energy, like an optical lens can powerfully focus light into a single beam. Dr. Libe Washburn, a geography professor at the University of California, Santa Barbara, explains what occurs to waves interacting with a current like the Agulhas.Abstract The influence of meridional shift of the oceanic subtropical front (STF) on the Agulhas Current (AC) regime shifts is studied using satellite altimeter data and a 1.5-layer ocean model. The satellite observations suggest the northward shift of the STF leads to the AC leaping across the gap with little Agulhas leakage, and the southward …For example, the East Australian Current, Brazil Current and Agulhas Current extensions are projected to intensify, while the Gulf Stream, Indonesian Throughflow and Agulhas Current are projected ...The Agulhas Current, which is the western boundary current of the South Indian Ocean, is here considered as an integral part of the subtropical gyre whose ...
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The Agulhas Return Current ( ARC) is an ocean current in the South Indian Ocean. The ARC contributes to the water exchange between oceans by forming a link between the South Atlantic Current and the South Indian Ocean Current. [1] It can reach velocities of up to 4 knots (7.4 km/h; 4.6 mph) and is therefore popular among participants in trans ...The geostrophic volume transport of the Agulhas Current, as referenced to LADCP, is 73 Sv, and is just 3% different from the direct LADCP transport estimate. The most recent full depth estimate of Agulhas Current transport in the literature is given by Toole and Warren [1993], who estimate a geostrophic volume transport of 85 Sv.Technical Support. OP31H-01 Agulhas Current meanders redistribute Intermediate Waters along the South African southeast coast. Wednesday, 21 February 2024. 08: ...work suggests that changes of the Southern Hemisphere (SH) winds led to an increase in Agulhas leakage and a corresponding salinification of the Atlantic.The Agulhas current is a Western Boundary Current that retroflects and joins the Atlantic Circumpolar Current (ACC). It has a very significant role in transferring heat into the Atlantic Ocean, as a branch of the Conveyor Belt return flow. It meets the cold Benguela Current off the Cape of Good Hope. ...The Agulhas Current core (southwest speeds >1 m·s −1) is shown as a red V-shaped contour and its horizontal shear at the surface is represented by gray velocity vectors measured by the ship-mounted acoustic Doppler current profiler. The horizontal dark gray contour represents the typical depth of the winter mixed layer, which generally ...The second swiftest current in all the world's oceans, the Agulhas is deadlier than the swiftest current (the Gulf Stream) because the Gulf Stream moves through open waters of the Atlantic. But the Agulhas travels swiftly between two bodies of land--Madagascar and Mozambique (downward arrow on map). Furthermore its waters flow in the opposite ... Interpretation of the fossil record, based on the analysis of modern faunal analogs, indicates that during glacial intervals the Agulhas Current was not the strong, year-round current that it is today. Evidence shows that during summer months a weak tropical current was present. During winter months the current was replaced by cool, high ...Within the time-varying flow, we quantify Agulhas leakage at annual resolution using a Lagrangian approach 8,20 by following water parcels from the Agulhas Current into the South Atlantic (green ...Aug 1, 2001 · The Agulhas Return Current constitutes the intense flow along the Subtropical Convergence south of Africa. It forms the connecting link between the generically similar South Atlantic Current and the South Indian Ocean Current, thus contributing to the water exchange between these two basins. This general along-front flow is, however ... Interpretation of the fossil record, based on the analysis of modern faunal analogs, indicates that during glacial intervals the Agulhas Current was not the ...Apr 27, 2011 ... The Agulhas Current transports warm and salty waters from the tropical Indian Ocean to the southern tip of Africa. There most of the water loops ...Abstract Solitary meanders of the Agulhas Current, so-called Natal pulses, may play an important role in the overall dynamics of this current system. Several hypotheses concerning the triggering of these pulses are tested using sea surface height and temperature data from satellites. The data show the formation of pulses in the Natal …The Agulhas is a convoluted and multifarious system [].It consists of a western boundary current, the Agulhas Current, which is arguably one of the most prominent current systems of the Southern Hemisphere (Fig. 1).The Agulhas Current, roughly on par with its Northern Hemisphere counterpart, the Gulf Stream, carries vast …The Agulhas Current is a critical component of global ocean circulation and has been observed to respond to El Niño Southern Oscillation (ENSO) events via its temperature and salinity signatures. In this research, we use sea surface salinity (SSS) from the National Aeronautics and Space Administration’s (NASA) Soil Moisture Active Passive (SMAP) …It has been observed a closed correlation between the transport of this current and the shedding of rings (Goni et al, JMR, vol.55, 861-883, 1997). Monitoring both the Agulhas transport into the South Atlantic in the upper kilometer of the ocean and the number of rings shed at its retroflection provides a means of detecting any substantial ... The Agulhas Current is the largest and strongest Western Boundary Current (WBC) in the Southern Hemisphere (Roberts et al., 2010; Bryden et al., 2005).It flows southwestward along the east coast of South Africa (Fig. 1), forming the intensified western limb of the South Indian Ocean subtropical gyre (Imawaki et al., 2013).The Agulhas …Apr 11, 2010 · The current is named for the southern tip of Africa, known as Cape Agulhas -- a Portuguese name that means “cape of needles.”. It was named in the 16th century, when Portuguese navigators noticed that true north and magnetic north were in perfect alignment. The current is home to some of the world’s most treacherous waters. .