Artem Sarafanov

Artem Sarafanov
P.P. Shirshov Institute of Oceanology · Department of Physics

PhD

About

41
Publications
4,153
Reads
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1,124
Citations
Citations since 2017
3 Research Items
627 Citations
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2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
Additional affiliations
February 2005 - March 2020
P.P. Shirshov Institute of Oceanology
Position
  • Researcher
Education
September 1996 - December 2004
Lomonosov Moscow State University
Field of study
  • Geography, Oceanology

Publications

Publications (41)
Chapter
Full-text available
Since 1997, the Shirshov Institute of Oceanology has been carrying out ship-based monitoring of the water mass properties (temperature, salinity, dissolved oxygen, and nutrients) and circulation in the northern North Atlantic over a section along 59.5° N from the southern tip of Greenland to Scotland. Since 2002, high precession full-depth measurem...
Article
Full-text available
Mediterranean water entering the Black Sea through the Bosphorus Strait forms mid-depth intrusions that contribute to the salt, heat, and volume balances of the sea, ventilate its water column at intermediate depths and restrain the upward flux of hydrogen sulfide from deeper layers. Despite the importance for the Black Sea environment, the circula...
Article
Full-text available
Spatial characteristics of oceanic convection in the North Atlantic Subpolar Gyre in winter 2013/14 are investigated basing on the analysis of Argo float data. Domains of the most intense convective mixing are identified by quantifying and mapping the water column vertical stratification. The areas of the Subpolar Mode Water formation are found alo...
Article
Full-text available
The decadal mean circulation in the northern North Atlantic was assessed for the early 21st century from repeated ship-based measurements along the Greenland-Portugal OVIDE line, from satellite altimetry and from earlier reported transports across 59.5°N and at the Greenland-Scotland sills. The remarkable quantitative agreement between all data set...
Article
Full-text available
Winter convection in the Irminger Sea leading to the formation of Labrador Sea Water (LSW) is analyzed using CTD data collected along the 59.5° N transatlantic section in 2004–2014, winter Argo data from 2012–2014, and daily North American regional reanalysis (NARR). The interannual variability of LSW in the Irminger Sea is investigated. The dissol...
Conference Paper
Full-text available
About 300 km3 of warm saline Mediterranean-origin waters (MOW) are annually transported into the Black Sea by the lower current in the Bosphorus Strait. After passing through the Strait, saline and relatively dense MOW propagate over the shelf and descend down the continental slope, mixing with less saline and colder surrounding waters. As a result...
Conference Paper
Full-text available
Argo float data from the winter of 2013/14 (December–April, about 1000 profiles) were used for an analysis of spatial characteristics of convectively formed mixed layer (ML) in a region enclosing the Labrador and Irminger seas in the subpolar North Atlantic. The method consisted of mapping the potential density (σ 0) vertical stratification in the...
Article
Full-text available
Hydrographic data collected in the Irminger Sea in the 1990s-2000s indicate that dense shelf waters carried by the East Greenland Current south of the Denmark Strait intermittently descend (cascade) down the continental slope and merge with the deep waters originating from the Nordic Seas overflows. Repeat measurements on the East Greenland shelf a...
Article
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The OVIDE project aims at documenting and understanding the variability of the oceanic circulation and water mass properties in the northern North Atlantic on climate-relevant time scales. Based on summer (June - July) hydrographic measurements made every two years since 2002, we assessed a mean state of the full-depth circulation across the A25-OV...
Article
Full-text available
A mean state of the full-depth summer circulation in the Atlantic Ocean in the region in between Cape Farewell (Greenland), Scotland and the Greenland-Scotland Ridge (GSR) is assessed by combining 2002-2008 yearly hydrographic measurements at 59.5 degrees N, mean dynamic topography, satellite altimetry data and available estimates of the Atlantic-N...
Article
In this study 36 hydrographic transects occupied between 1991 and 2007 in the vicinity of the WOCE A1E/AR7E section are used to investigate various aspects of the Irminger Gyre, a narrow cyclonic recirculation in the southwest Irminger Sea. Vertical sections of absolute geostrophic velocity were constructed using satellite and shipboard velocity me...
Article
Full-text available
The dense water overflows crossing the Denmark Strait and Faroe-Shetland Channel form the Denmark Strait Overflow Water (DSOW) and Northeast Atlantic Deep Water, respectively. Collectively with the convectively-formed Labrador Sea Water (LSW), these water masses form the deep limb of the Atlantic Meridional Overturning Circulation and hence are imp...
Article
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In earlier studies, the decadal variability of the Deep Western Boundary Current (DWBC) transport in the vicinity of Cape Farewell, Greenland, has been assessed from changes in the baroclinic velocities computed from hydrographic data and referenced to 1000 m depth. The main limitation of using such an estimate as an index for the DWBC absolute tra...
Article
The horizontal circulation of the subpolar gyre and the Meridional Overturning Circulation (MOC) are investigated here by comparing two snapshots of the North Atlantic as delivered by two hydrographic sections between Greenland and Portugal. The corresponding cruises were carried out in June–July 2002 and June–July 2004 on R/V Thalassa within the f...
Conference Paper
Full-text available
Recent decadal changes in the Deep Western Boundary Current (DWBC) transport southeast of Cape Farewell are assessed from hydrographic data (1991-2007), individual direct velocity measurements (2002-2006) and altimetry (1992-2007). Following the approach used in earlier studies, we first determined that the DWBC (σ0 >27.80) baroclinic transport (TB...
Article
Full-text available
Recent decadal salinity changes in the Greenland-Scotland overflow-derived deep waters are quantified using CTD data from repeated hydrographic sections in the Irminger Sea. The Denmark Strait Overflow Water salinity record shows the absence of any net change over the 1980s-2000s; changes in the Iceland-Scotland Overflow Water (ISOW) and in the dee...
Conference Paper
Full-text available
In 1997-2009, full-depth transatlantic hydrographic section along 60°N between Cape Farewell (Greenland) and the Scottish shelf was repeatedly occupied on board the Russian research vessels. Since 2002 onwards, the section has been repeated annually. The comprehensive dataset thus collected has contributed to the research of the recent and long-ter...
Article
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Anomalies of thermohaline characteristics of the ocean deep waters formed in the subpolar North Atlantic are shown to be controlled by the natural oscillations of the atmospheric state in the region, i.e., the North Atlantic Oscillation (NAO). A general mechanism behind the NAO effect on the deep water temperature and salinity on a decadal time sca...
Article
Full-text available
Sarafanov, A. 2009. On the effect of the North Atlantic Oscillation on temperature and salinity of the subpolar North Atlantic intermediate and deep waters. – ICES Journal of Marine Science, 66: 1448–1454. The close relationship between the observed water mass properties and the winter North Atlantic Oscillation (NAO) index (1950–2000s; r² ≈ 0.65)...
Article
Full-text available
Recent decadal changes (1955-2007) in the baroclinic transport (TBC) of the Deep Western Boundary Current (DWBC) carrying the Greenland-Scotland overflow-derived waters along the East Greenland slope are quantified from a set of hydrographic sections in vicinity of Cape Farewell. The updated historical record of TBC shows clear decadal variability...
Conference Paper
Full-text available
Recent decadal salinity changes in the Greenland-Scotland overflow-derived deep waters are quantified using the data from repeated hydrographic sections in the Irminger Sea. The Denmark Strait Overflow Water salinity record shows the absence of any net change over the 1980s-2000s; changes in the Iceland-Scotland Overflow Water (ISOW) layer and in t...
Article
A quantitative estimate of the temperature and salinity variations in the Labrador Sea Water (LSW), the Iceland-Scotland Overflow Water (ISOW), and the Denmark Strait Overflow Water (DSOW) is given on the basis of the analysis of repeated observations over a transatlantic section along 60°N in 1997, 2002, 2004, and 2006. The changes distinguished i...
Conference Paper
Full-text available
The North Atlantic Oscillation (NAO) is shown to be responsible for up to two thirds of the observed thermohaline changes at the intermediate and deep levels in the northern North Atlantic since the 1950s. Persistent NAO decline leads to warming and salinification in the intermediate-deep water column, and vice versa. Salinity of the intermediate a...
Article
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1] Recent thermohaline changes in the layer of intermediate waters (IW) advected into the eastern subpolar North Atlantic from lower latitudes are quantified using the data from the repeated transatlantic sections. Positive trends in temperature and salinity in the IW density class at $53°N (0.049°C/a and 0.0088/a, 1992–2002) and $60°N (0.044°C/a a...
Article
Full-text available
In July 2000, a transatlantic hydrographic section was made on board the Russian R/V Akademik Ioffe in the northern equatorial region at ∼6.5° N on the WOCE (World Ocean Circulation Experiment) A06 line. A significant warming in the layers of intermediate and deep waters in the interior eastern basin is determined from comparison of the section tem...
Article
Full-text available
Recent intra-decadal changes in temperature and salinity of the Labrador Sea Water and Nordic overflow waters are quantified on the basis of the CTD data from the repeats of the zonal transatlantic section along ∼60°N carried out in 1997, 2002, 2004 and 2006. The revealed changes, in general, point to a rapid transition to the warmer/saltier condit...
Article
Full-text available
The new CTD data from the R/V Akvanavt 2002 cruise presented and discussed in this study, show that lateral limits of the Bosphorus lens penetration into the Black Sea interior are substantially wider than the earlier observed ones. The data reveal unexpectedly thick warm lenses in the 150-500 m depth range within the eastern gyre of the Black Sea....
Article
New evidence of Labrador Sea Water renewal as a result of deep convection in the Irminger Basin is obtained on the basis of the analysis of the data of the distribution of the dissolved oxygen concentration over six sections in the Subpolar North Atlantic in March–October of 1997.
Article
Full-text available
1] In July 2000, a transatlantic conductivity-temperature-depth/hydrographic section was occupied on board the Russian R/V Akademik Ioffe in the northern equatorial region from 9°26 0 N, 17°22 0 W to 3°48 0 N, 47°16 0 W near the World Ocean Circulation Experiment (WOCE) A06 line. The water mass characteristics and the main features of cross-section...
Article
Full-text available
Labrador Sea Water (LSW) property variations are analyzed using the data from six hydrographic sections occupied in 1991-2004 in the southern Irminger Basin between Cape Farewell and the Reykjanes Ridge. From 1991 to 1996, the LSW layer became steadily colder and fresher. The decrease in salinity of the LSW detected in 1994 was caused by the local...
Article
An example of combined application of core method and that of neutral bouyancy surfaces for the determination of geographical boundaries and specific feaures of water masses is given. The latter method is proposed as an alternative to the isopicnique analysis. The Mediterranean intermediate water mass of the Atlantic Ocean has been chosen as an obj...
Article
Adiabatic distribution of water masses could be studied in oceanology by both isopicnic method and McDougull's method of neutral surfaces which is more precise. In order to make calculations easier McDougull ignored the difference between the contraction of an adiabatically moving particle and the contraction of surrounding water due to pressure ch...

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Projects

Project (1)
Project
The Ovide project aims at documenting and understanding the variability of the circulation and water mass properties in the northern North Atlantic within the context of global change.