Line W: A sustained measurement program sampling the North Atlantic Deep Western Boundary Current and Gulf Stream about 39°N 70°W Image copyrighted by.

Slides:

Advertisements

Similar presentations

Open-ocean sustained time series observation sites run/co-run by NOAA/AOML Western Boundary Time Series: Florida Current transport (Meinen & Baringer)

Advertisements

Past, current and envisioned activities in the Labrador Sea

RAPID/MOCHA/WBTS THE SEASONAL CYCLE OF THE AMOC AT 26ºN Eastern Boundary Considerations Gerard McCarthy, Eleanor Frajka- Williams, Aurélie Duchez and David.

Water mass transformation in the Iceland Sea Irminger Sea, R/V Knorr, October 2008 Kjetil Våge Kent Moore Steingrímur Jónsson Héðinn Valdimarsson.

Wind-Driven Circulation in a Stratified Ocean Consider the ocean in several isopycnal layers that can be separated into two groups: Layers that outcrop.

Slide 1 Predicting the Climate of Europe: the THOR project Laurent Mortier – University of Paris for Detlef Quadfasel (co-ordinator), University of Hamburg.

Transports between Iceland and Scotland: Results from the Extended Ellett Line Clare Johnson (1), Stuart Cunningham (1), N. Penny Holliday.

Observed variability of hydrography and transport at 53°N in the Labrador Sea Johannes Karstensen GEOMAR Helmholtz Centre for Ocean Research Kiel With.

The Gulf Stream Justin Shapiro Image Courtesy of Benjamin Franklin. (He had it just about right) es/gulf_stream.gif.

Sea Surface Temperature, November Nomenclature Meridional Overturning Circulation (MOC): Total northward/southward flow, over latitude and.

Propagation of wave signals along the western boundary and their link to ocean overturning in the North Atlantic Vassil Roussenov 1, Ric Williams 1 Chris.

Baroclinic Instability in the Denmark Strait Overflow and how it applies the material learned in this GFD course Emily Harrison James Mueller December.

Propagation of wave signals in models and altimetry for the North Atlantic Vassil Roussenov 1, Chris Hughes 2, Ric Williams 1, David Marshall 3 and Mike.

A monitoring design for the Atlantic meridional overturning circulation Joël Hirschi, Johanna Baehr, Jochem Marotzke, John Stark School of Earth and Ocean.

Calculation of the MOC Time Series, Data Products and Availability Paul Wright National Oceanography Centre, Southampton (based on work by Stuart Cunningham,

Wave communication of high latitude forcing perturbations over the North Atlantic Vassil Roussenov, Ric Williams & Chris Hughes How changes in the high.

Rapid Climate Change (RAPID) programme Meric Srokosz Southampton Oceanography Centre Natural Environment Research Council (NERC)

BNL INL Lateral Transport of Dissolved and Particulate TEIs at Ocean Margins K2-NW Pacific % Transmission Along Line W 228 Ra.

RSMAS, University of Miami, Miami FL

Andrew Budnick October 7 th, 2011 North Atlantic oxygen: Summary and results Andrew Budnick Undergraduate, Princeton University.

Thermohaline Overtuning – at Risk? Detlef Quadfasel, THOR Project Office KlimaCampus, University of Hamburg, Germany

The meridional coherence of the North Atlantic meridional overturning circulation Rory Bingham Proudman Oceanographic Laboratory Coauthors: Chris Hughes,

Temperature and Salinity Variabitlity on the Scotian Shelf and in the Gulf of Maine BRIAN PETRIE AND KENNETH DRINKWATER.

Radiatively Active Gases from the N. Atlantic Region and Climate Change (RAGNARoCC) Andy Watson, UEA Biogeochemical sections for carbon and CFCs in the.

Two research cruises were successfully conducted in 2013 and Shipboard and moored observations show that: at first glance no significant decadal.

Streamlines. North Atlantic (surface) currents system.

Model LSW formation rate (2 yr averages) estimated from: (red) CFC-12 inventories, (black) mixed layer depth and (green) volume transport residual. Also.

The role of gliders in sustained observations of the ocean Deliverable 4.1 or WP 4.

THE CONTRIBUTIONS OF CIMAS TO THE EVOLUTION OF PRESENT NOAA AND CLIVAR CLIMATE REQUIREMENTS.

Western boundary circulation in the tropical South Atlantic and its relation to Tropical Atlantic Variability Rebecca Hummels 1, Peter Brandt 1, Marcus.

Deep circulation and meridional overturning Steve Rintoul and many others ….

Transport in the Subpolar and Subtropical North Atlantic

Assuming 16 cm standard deviation. The final result – 5 of these records were noisy Halifax Grand Banks Line W 4100 m 2700 m 3250 m 2250 m 1800 m.

Ocean circulation Surface circulation driven by wind Subsurface circulation driven by density.

The RAPID ocean observation array at 26.5°N in the HadCM3 model Leon Hermanson, Rowan Sutton, Keith Haines, Doug Smith, Joël Hirschi.

NACLIM CT 2 Monitoring of North Atlantic parameters New Lead: Johannes Karstensen (GEOMAR) and Karin M. H. Larsen (HAV) WP 2.1 Exchanges across the Greenland-Scotland.

Temporal and Spatial variability of the East Australian Current Bernadette Sloyan, Ken Ridgway, Bec Cowley AMSA 2014.

1DMS/USM, 2SERF, 3NRL/SSC, 4COAPS/FSU

Contribution Contribution to monitoring the cold water route is constructed along 3 axes: 1- monitoring transport of the Malvinas Current 2- documenting.

DFO Northwest Atlantic Ocean Monitoring & Mooring Programs OSNAP Planning Meeting April 2011 BIO.

North Atlantic Observing System

THOR CT3 Meeting – Torshavn 2009 – Fischer/Visbeck/Zantopp/Nunes In the Labrador Sea, overflow water from the Denmark Strait and from the Iceland-Scotland.

The Pacific Gateway to the Arctic – Quantifying and Understanding Bering Strait Oceanic Fluxes R. Woodgate 1, T. Weingartner 2, T. Whitledge 2, Ron Lindsay.

Western boundary circulation and the role of deep eddies in the tropical South Atlantic Overview Western Boundary Circulation (Schott et al. 2004) - shipboard.

North Atlantic dynamical response to high latitude perturbations in buoyancy forcing Vassil Roussenov, Ric Williams & Chris Hughes How changes in the high.

Measuring the South Atlantic MOC – in the OCCAM ocean model Povl AbrahamsenJoel Hirschi Emily ShuckburghElaine McDonagh Mike MeredithBob Marsh British.

Flow of Atlantic water to the North Icelandic shelf Steingrímur Jónsson 1,2 and Héðinn Valdimarsson 1 1 Marine Research Institute and 2 University of Akureyri.

Measuring the eastern boundary inflow to the Labrador Sea

Cross-Gyre Thermohaline Transport in the Tropical Atlantic: The role of NBC Rings Bill Johns Zulema Garraffo Division of Meteorology and Physical Oceanography.

Sverdrup Lecture 2008 Chlorofluorocarbons: The Oceans’ Inadvertent Canary Rana A. Fine Rosenstiel School of the University of Miami.

Labrador Sea Export -- the DWBC at 53°N as a Fingerprint of the AMOC? J. Fischer, J. Karstensen, M. Visbeck, R. Zantopp, R. Kopte Annual Conference, Berlin.

Western boundary circulation in the tropical South Atlantic and its relation to Tropical Atlantic Variability Rebecca Hummels1, Peter Brandt1, Marcus Dengler1,

Nutrient fluxes in the eastern North Atlantic Clare Johnson (1), Stuart Cunningham (1), Penny Holliday (2) and Stefan Gary.

The relationship between sea level and bottom pressure in an eddy permitting ocean model Rory Bingham and Chris Hughes Proudman Oceanographic Laboratory.

IPCC AR4 Chapter 5 Oxygen decline at base of pycnocline throughout subpolar and subtropical N. Pacific: reduced ventilation Deutsch et al. (2005) IPCC.

Propagation of wave signals along the western boundary and their link to ocean overturning in the North Atlantic Vassil Roussenov 1, Ric Williams 1 Chris.

Stommel and Munk Theories of the Gulf Stream October 8.

Norwegian Meteorological InstituteM/S Nordkapp Fall 2003 Pathways of Atlantic Water Cecilie Mauritzen – Norwegian Meteorological Institute NOClim 2 Workshop,

SMOC Brazil 2010 Monitoring the Formation Rate of NADW Components Using Tracer Inventories Rana A. Fine Rosenstiel School, University of Miami Studies.

10/24/03search_osm_10_032 Abrupt Change in Deep Water Formation in the Greenland Sea: Results from Hydrographic and Tracer Time Series SEARCH Open Science.

In the vicinity of mooring D, the bottom slope is α ≈ We show that for the stratification shown in Figure 1 (let N 0 =2f ) the frequency ω of bottom-trapped.

A Comparison of Profiling Float and XBT Representations of Upper Layer Temperature Structure of the Northwestern Subtropical North Atlantic Robert L.

Density-Driven Downwelling and Thermohaline Circulation

Peter Brandt (1), Martin Claus (1), Richard J

Deep Western Boundary Current

Benjamin Franklin. (He had it just about right)

Causes of Tropical Circulation Variability

Ocean Motion Vocabulary

RAPID AND SLOW COMMUNICATION OF OVERTURNING

Tony Lee, NASA JPL/CalTech

Presentation transcript:

Line W: A sustained measurement program sampling the North Atlantic Deep Western Boundary Current and Gulf Stream about 39°N 70°W Image copyrighted by Ocean Remote Sensing Group, JHU/APL J. Toole, R. Curry, T. Joyce, B. Peña-Molino, W. Smethie and J. Smith

Line W Contribution to AMOC Study in collaboration with the U.K. Rapid Programme Research supported by U.S. National Science Foundation MOVE RAPID Line W focus: Cold limb of the MOC between Cape Hatteras and Grand Banks

Sustained measurement program consists of a moored array and repeated hydrographic sampling Adjacent to SYNOP, Rise and SEEP arrays; Downstream from Halkin & Rossby

Field Program Shipboard sampling : spring and fall cruises CTD/O 2, LADCP, SADCP, CFCs, 129 I : one cruise/year Moored Array : 2 conventional (2-yr endurance) 3 MMP (annual service) 1 conventional (2.5 yr) : 4 conventional 2 MMP All on 2-year service schedule

Average LADCP Velocity Section mean velocity profiles along-isobath component ULSW+CLSW+ ISOW+DSOW 25 ± 4 Sv

Equatorward transport across Line W partitioned by water mass: ULSW (yellow), CLSW (green), ISOW (purple), DSOW (black)  GS Rings near array red squares = ship data

~60% of the sub-inertial variance accounted for by depth-independent motions Along-isobath variance is ~twice the across-isobath Due chiefly to motions at periods longer than a month

~60% of baroclinic variance accounted for by 1 st EOF mode Red = along-isobath component Black = across-isobath Similar to first baroclinic mode for flat-bottom ocean, but bottom isn’t flat

Dynamical baroclinic modes flat bottom sloping bottom TRW N 2 profile

Kinetic Energy Frequency Spectra from W2 Black = 1000 m Red = 2700 m (more) evidence of Topographic Rossby Wave variability

Water Property Distributions

Receives the products of convection, overflow and entrainment that pass through Labrador Sea and ventilate the Atlantic deep basins

Time series of 129 I concentrations in Denmark Strait and Labrador Sea and at Line W from John Smith (BIO).

Line W is ongoing Just recovered the array for deployment Once we process the recovered data, we will work to produce transport time series for the period Invite collaborations to use these data help us learn how the time-varying DWBC at 39°N 70°W fits into the North Atlantic MOC