Decadal Water Mass Variations in the Northeast Atlantic Ocean G C Johnson, J Bullister, M Baringer, C Mordy, C Sabine, J-Z Zhang, R Wanninkhof, & R Feely.

Slides:

Advertisements

Similar presentations

Age and AOU increases at the North Pacific subtropical-subpolar gyre boundary PICES 13th Annual Meeting, Honolulu, HI Sabine Mecking Woods Hole Oceanographic.

Advertisements

Global climate responses to perturbations in Antarctic Intermediate Water Jennifer Graham Prof K. Heywood, Prof. D. Stevens, Dr Z. Wang (BAS)

Ocean Biogeochemistry (C, O 2, N, P) Achievements and challenges Nicolas Gruber Environmental Physics, ETH Zürich, Zurich, Switzerland. Using input from.

- Perspectivas actuales en el estudio de la evolución del CO2 en la superficie del océano => case studies - Perspectivas actuales en el estudio de la.

Concept test We, human beings, along with all animals are causing a net increase of atmospheric CO 2 because our breath contains CO 2 when we exhale. (1)

About the recent warming of intermediate waters of the Bay of Biscay Spanish Institute of Oceanography C. González-Pola, A. Lavín, R. Somavilla, C. Rodriguez.

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

Distributions of mixed layer properties in North Pacific water mass formation areas: comparison of Argo floats and World Ocean Atlas 2001 Frederick M.

THE NORTH ATLANTIC OSCILLATION (NAO) JENNY KAFKA.

The influence of extra-tropical, atmospheric zonal wave three on the regional variation of Antarctic sea ice Marilyn Raphael UCLA Department of Geography.

2. Natural Climate Variability 2.1 Introduction 2.2 Interannual Variability: We are Here! 2.3 Decadal Variability 2.4 Climate Prediction 2.5 Variability.

Oceans. Vertical ocean temperature profile Plimsoll line.

Climate Impacts Discussion: What economic impacts does ENSO have? What can we say about ENSO and global climate change? Are there other phenomena similar.

Determining the magnitude and variability of the anthropogenic CO 2 uptake rate by the oceans. Dick Feely (NOAA/PMEL/JISAO) Chris Sabine (NOAA/PMEL/JISAO)

SIO 210 Typical distributions (2 lectures) Fall 2014

SIO 210: Natural climate variability (decadal modes and longer time scales) L. Talley 2014 DRAFT (2010 lecture with few edits) Climate equilibria, forcing,

Nandini Ramesh IPCC AR5 WG1 - Climate Change 2013: The Physical Science Basis Seminar in Atmospheric Science21 st February, 2014.

Chapter 20 Section 1 Review Page 500

Chapter 20 Section 1 Review Page 500

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

The Global Ocean Carbon Cycle Rik Wanninkhof, NOAA/AOML Annual OCO review, June 2007: Celebrating Our Past, Observing our Present, Predicting our Future:

Global Circulation and El Nino

Climate Change and the Ocean ACE-CRC Science From Antarctica to Australia.

DECADAL CHANGES IN OCEAN CARBON UPTAKE C.L. Sabine, R.A. Feely, G.C. Johnson, R. Wanninkhof, F.J. Millero, A.G. Dickson, N. Gruber, R. Key and P. Covert.

Climate Variability and Change in the U.S. GLOBEC Regions as Simulated by the IPCC Climate Models: Ecosystem Implications PIs: Antonietta Capotondi, University.

Global Interannual Upper Ocean Heat Content Variability Gregory C. Johnson (NOAA/PMEL), John M. Lyman (UH/JIMA & NOAA/PMEL), Josh K. Willis (NASA/JPL),

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

Review of ocean temperature, salinity and oxygen changes in the Pacific and subtropical southern hemisphere Red = In IPCC AR4 Green = after IPCC AR4 Climate.

Marine Aspects of Abrupt Climate Change NSF ACGEO April 28, 2004 William Curry Woods Hole Oceanographic Institution.

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

Physical Variability Atlantic Shelves, Coastal Areas.

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

Section 2.3 Interannual Variability El Nino Southern Oscillation (ENSO) (i) Observations (ii) Theory for ENSO (iii) Impacts Interannual variability.

Trends and recent shifts in the ocean hydrography of the temperate north-east Atlantic Insights from routinely repeated sections around Spanish waters.

Part II: Where are we going? Like an ocean... The waves crash down... Introducing OCEAN ATMOSPHERE INTERACTION.

Quantifying pH Dynamics in a Changing Ocean Mathilde Hagens & Jack Middelburg Earth Sciences Utrecht University.

Helmuth Thomas 1, Friederike Prowe 1,4, Ivan D. Lima 2, Scott C. Doney 2, Rik Wanninkhof 3, Richard Greatbach 1,4, Antoine Corbière 5 & Ute Schuster 6.

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

Most of this course is about the basic state of the Earth’s climate system and its governing forces. However the climate state varies across a wide range.

WOCE hydrographic Atlas, 1 As a result of the World Ocean Circulation Experiment (WOCE), a hydrographic survey of the world oceans occurred from

Components of the Global Climate Change Process IPCC AR4.

Current developments and future opportunities for the Global Ocean Carbon Observing Network Christopher Sabine, Richard Feely, Rik Wanninkhof, Steve Hankin.

Dongxiao Zhang and Mike McPhaden

Using the Argo Dataset to Describe the North Atlantic SubPolar Mode Water T. Hascoet, H. Mercier, V. Thierry, E. Autret, F. Gaillard Laboratoire de Physique.

Establish the framework for repeated anthropogenic CO 2 (C ant ) inventory quantification within the Atlantic Ocean basin, including its polar extensions.

Water Mass Distribution OEAS 604 Lecture Outline 1)Thermohaline Circulation 2)Spreading pathways in ocean basins 3)T-S diagrams 4)Mixing on T-S diagrams.

Interannual Time Scales: ENSO Decadal Time Scales: Basin Wide Variability (e.g. Pacific Decadal Oscillation, North Atlantic Oscillation) Longer Time Scales:

The vulnerable ocean: Decadal changes in the ocean carbon and oxygen cycles Holger Brix 1, Curtis Deutsch 2, Scott C. Doney 3, Arne Koertzinger 4, Doug.

Ocean Currents.

Argo: Tracking the Pulse of the Global Oceans. How do Argo floats work? Argo floats collect a temperature and salinity profile and a trajectory every.

Climate Variability and Basin Scale Forcing over the North Atlantic Jim Hurrell Climate and Global Dynamics Division National Center for Atmospheric Research.

Evaluation of two global HYCOM 1/12º hindcasts in the Mediterranean Sea Cedric Sommen 1, Alexandra Bozec 2, Eric P. Chassignet 2 Experiments Transport.

Doney (2010) The Growing Human Footprint on Coastal

© Vipin Kumar IIT Mumbai Case Study 2: Dipoles Teleconnections are recurring long distance patterns of climate anomalies. Typically, teleconnections.

Changes in Sea Ice Alison Liou Meghan Goodwin. Arctic Oscillation (Northern Annular Mode) Antarctic Oscillation (Southern Annular Mode) Zonal = movement.

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

THOR meeting Paris November 25-26, 2009 North Atlantic Subpolar Gyre forcing on the fresh water exchange with the Arctic Ocean Christophe HERBAUT and Marie-Noëlle.

Recent Variability in Ocean Climate in the Scotia-Maine and Adjacent Regions Brian Petrie, Roger Pettipas, Charles Hannah Bedford Institute of Oceanography.

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.

Climate Change Forcing of Intense Oceanic O 2 Minimum Zones n Existence dependent on interplay of ocean physics and biogeochemistry - focus on ETP n Paleo-evidence.

Spatial Modes of Salinity and Temperature Comparison with PDO index

Ocean Currents What causes them?

WHOTS ALOHA Roger Lukas*, Fernando Santiago-Mandujano*, Robert Weller#, Albert Plueddemann# * SOEST/University of Hawaii # Woods Hole Oceanographic.

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

1. Kevin goes bowling. Whenever he bowls the ball, he transfers energy from his hand to the bowling ball. The amount of energy before the transfer is ____________.

Doney (2010) The Growing Human Footprint on Coastal

Lauren Santi and Alison Gray

Korea Ocean Research & Development Institute, Ansan, Republic of Korea

Impact of interannual atmospheric forcing on the Mediterranean Outflow Water variability in the Atlantic Ocean Hello, today I’m going to present my work.

Presentation transcript:

Decadal Water Mass Variations in the Northeast Atlantic Ocean G C Johnson, J Bullister, M Baringer, C Mordy, C Sabine, J-Z Zhang, R Wanninkhof, & R Feely (NOAA/PMEL, NOAA/AOML, & JISAO) 4 sections at 20  W between 1988 & 2003 reveal: SubPolar Mode Water (SPMW) trends warmer, lighter, & shallower. Marked AOU & PV increases below SPMW. Mediterranean Outflow Water (MOW) spreads northward. Labrador Sea Water (LSW) trends colder, fresher, denser, & deeper. Changes consistent with North Atlantic Oscillation (NAO) shifts. Repeat section analysis requires a spatial and temporal context. G C Johnson, J Bullister, M Baringer, C Mordy, C Sabine, J-Z Zhang, R Wanninkhof, & R Feely (NOAA/PMEL, NOAA/AOML, & JISAO) 4 sections at 20  W between 1988 & 2003 reveal: SubPolar Mode Water (SPMW) trends warmer, lighter, & shallower. Marked AOU & PV increases below SPMW. Mediterranean Outflow Water (MOW) spreads northward. Labrador Sea Water (LSW) trends colder, fresher, denser, & deeper. Changes consistent with North Atlantic Oscillation (NAO) shifts. Repeat section analysis requires a spatial and temporal context.

20  W Sections: 4 occupations over 15 years 2003 CO2/CLIVAR Repeat Hydrography NOAA/NSF Funded Bullister & Gruber 1998 CHAOS Smythe-Wright 1993 NOAA OACES Wanninkhof & Doney 1988 WOCE A16N McCartney, Talley, & Tsuchiya 2003 CO2/CLIVAR Repeat Hydrography NOAA/NSF Funded Bullister & Gruber 1998 CHAOS Smythe-Wright 1993 NOAA OACES Wanninkhof & Doney 1988 WOCE A16N McCartney, Talley, & Tsuchiya

NAO: LSW & SPMW From Stramma et al. (2004) Positive NAO (bottom panel shading) LSW  decreases (top panel line) LSW h increases (bottom panel line) SSH Anomalies along 20  W imply upper water changes: 1993 relatively dense (cold) mid-90’s switch (with NAO) 1998 light (warm) 2003 lighter (and warmer) (1988 not measured)

Mean 20  W  (  C) & S (PSS-78) SPMW LSW MOW

AOU (  mol kg -1 ) & PV ( m -1 s -1 )

 (  C) &  S (PSS-78)

 AOU (  mol kg -1 ) &  PV ( m -1 s -1 )

LSW (43-53  N) Variations

Property Changes vs. Mean (40  N to Iceland) SPWM MOW LSW NCEP/NCAR Anomalies  W,  N

Summary 4 sections at 20  W between 1988 and 2003 reveal: LSW trends colder, fresher, denser, & deeper. MOW spreads northward 2003 (warmer, saltier, O 2 -poorer) Oxygen values decrease (AOU increases) just below SPMW (consistent with lighter and shallower ventilation). SPMW generally shifts warmer, lighter, shallower (between 1993 & 1998) These changes are likely related to The NAO shift to positive in early 1980’s & the NAO shift to negative in mid-90’s The literature argues that SPMW & MOW changes are mostly from circulation variations. LSW changes are from ventilation variations. There are large and related carbon variations... 4 sections at 20  W between 1988 and 2003 reveal: LSW trends colder, fresher, denser, & deeper. MOW spreads northward 2003 (warmer, saltier, O 2 -poorer) Oxygen values decrease (AOU increases) just below SPMW (consistent with lighter and shallower ventilation). SPMW generally shifts warmer, lighter, shallower (between 1993 & 1998) These changes are likely related to The NAO shift to positive in early 1980’s & the NAO shift to negative in mid-90’s The literature argues that SPMW & MOW changes are mostly from circulation variations. LSW changes are from ventilation variations. There are large and related carbon variations...

Discussion There are large and related carbon variations... Quantifying ocean CO 2 storage is a central goal Ocean processes (circulation, ventilation) vary interannually Repeat sections are occupied at decadal intervals at basin scale Conflict arises between affordability and aliasing. How to put repeat sections into spatial & temporal context? PV-AOU variability relation: is it global, useful? What about oxygen sensors on Argo floats? Costs: sensors, telecom, energy (float equivalents), & data management. Numerical modeling, data assimilation Are biogeochemical results available/reliable? Should we worry about large perturbations? There are large and related carbon variations... Quantifying ocean CO 2 storage is a central goal Ocean processes (circulation, ventilation) vary interannually Repeat sections are occupied at decadal intervals at basin scale Conflict arises between affordability and aliasing. How to put repeat sections into spatial & temporal context? PV-AOU variability relation: is it global, useful? What about oxygen sensors on Argo floats? Costs: sensors, telecom, energy (float equivalents), & data management. Numerical modeling, data assimilation Are biogeochemical results available/reliable? Should we worry about large perturbations? Riser (UW)