Observations of Mesoscale* Ocean Circulation: Present and Future Observations of Mesoscale* Ocean Circulation: Present and Future Bo Qiu Dept of Oceanography.

Slides:

Advertisements

Similar presentations

Mid-depth Circulation of the World Ocean: A First Look at the Argo Array Josh K. Willis and Lee-Lueng Fu

Advertisements

ECCO-2 and NASA Satellite Missions Lee-Lueng Fu Jet Propulsion Laboratory January 22-23, ECCO-2 Meeting.

Decadal variability Qiu and Chen, 2005 KE is characterized by the presence of two quasi-stationary meanders at 144° and 155°E Up and downstream jets.

SIO 210: Dynamics VI (Potential vorticity) L. Talley Fall, 2014 Talley SIO210 (2014)1 Variation of Coriolis with latitude: “β” Vorticity Potential vorticity.

Modeling Pacific Physical and Biological Processes

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

Surface Dispersion by Mesoscale Eddies Using Altimeter Data Long Zhou 3nd Student Seminar, 11/06/2006.

Working Group 4 Coastal Biogeochemistry Forum, June 23-25, 2004 K. Lindsay, G. McKinley, C. Nevison, K. Plattner, R. Seifert Can coastal ecosystems be.

Horizontal Pressure Gradients Pressure changes provide the push that drive ocean currents Balance between pressure & Coriolis forces gives us geostrophic.

Damping of Tropical Instability Waves caused by the action of surface currents on stress R. Justin Small 1, Kelvin Richards 2, Shang-Ping Xie 3, Pierre.

The Canary Current Geoffrey Grek. Canary Current Stats Flows North to South from 30°N to 10°N and offshore to 20°W Very wide ~1000 km Cold water due to.

Surface Water and Ocean Topography Mission (SWOT)

Horizontal Pressure Gradients Pressure changes provide the push that drive ocean currents Balance between pressure & Coriolis forces gives us geostrophic.

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.

Ocean Gyres - combine knowledge of global winds and Ekman flow - surface transport can be determined from wind direction/velocity - surface transport alters.

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.

The Subtropical Gyres: setting the stage for generating a more realistic gyre Ekman used an ideal, infinite ocean, no slopes in sea level, or variations.

SIO 210: Eddies and mixing L. Talley Fall, 2014

SIO 210: Dynamics VI (Potential vorticity) L. Talley Fall, 2014 (Section 2: including some derivations) Talley SIO210 (2014)1 Variation of Coriolis with.

Observational evidence for propagation of decadal spiciness anomalies in the North Pacific Yoshi N. Sasaki, N. Schneider, N. Maximenko, and K. Lebedev.

Modes of Pacific Climate Variability: ENSO and the PDO Michael Alexander Earth System Research Lab michael.alexander/publications/

Review High Resolution Modeling of Steric Sea-level Rise Tatsuo Suzuki (FRCGC,JAMSTEC) Understanding Sea-level Rise and Variability 6-9 June, 2006 Paris,

Wind-driven circulation II

Group Meeting 2010/03/30 R Kirsten Feng. Nutrient and salinity decadal variations in the central and eastern North Pacific E. Di Lorenzo, J. Fiechter,

N. Maximenko: Satellite ocean surface currents and winds Ocean Vector Wind Working Group meeting, October 7, 2013, Boulder 1,051 active drifters (approx.

Eda Selected Slides Tide Gauge.

Linking sea surface temperature, surface flux, and heat content in the North Atlantic: what can we learn about predictability? LuAnne Thompson School of.

“ New Ocean Circulation Patterns from Combined Drifter and Satellite Data ” Peter Niiler Scripps Institution of Oceanography with original material from.

OC3522Summer 2001 OC Remote Sensing of the Atmosphere and Ocean - Summer 2001 Active Microwave Radar.

“ Combining Ocean Velocity Observations and Altimeter Data for OGCM Verification ” Peter Niiler Scripps Institution of Oceanography with original material.

Climate Dynamics 2011/01/10 R 馮培寧 Kirsten Feng.

Term Paper Guide Find an oceanic or relevant atmospheric phenomenon you are interested in (e.g., ENSO, PDO, AMO, TAV, IOD, NAO, hurricane activity, regional.

Modulation of eastern North Pacific hurricanes by the Madden-Julian oscillation. (Maloney, E. D., and D. L. Hartmann, 2000: J. Climate, 13, )

Mapping Ocean Surface Topography With a Synthetic-Aperture Interferometry Radar: A Global Hydrosphere Mapper Lee-Lueng Fu Jet Propulsion Laboratory Pasadena,

Michael J. McPhaden, NOAA/PMEL Dongxiao Zhang, University of Washington and NOAA/PMEL Circulation Changes Linked to ENSO- like Pacific Decadal Variability.

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

1) What is the variability in eddy currents and the resulting impact on global climate and weather? Resolving meso-scale and sub- meso-scale ocean dynamics.

U.S. Navy Global Ocean Prediction Update Key Performers: A.J. Wallcraft, H.E. Hurlburt, E.J. Metzger, J.G. Richman, J.F. Shriver, P.G. Thoppil, O.M. Smedstad,

The Surface Currents An Introduction to the World’s Oceans Sverdrup et al. - Chapter Nine - 8th Ed.

The Inferred 3D velocity field Nelson Hogg (WHOI) The Inferred 3D velocity field Nelson Hogg (WHOI) Nelson Hogg: Missing PN Ranks with altimetry in terms.

Bifurcation Dynamics L. Gourdeau (1), B. Kessler (2) 1), LEGOS/IRD Nouméa, New Caledonia, 2) NOAA/PMEL, Seattle, USA Why is it important to study the bifurcation.

1 Xujing Jia Davis Graduate School of Oceanography, University of Rhode Island Lewis M. Rothstein Graduate School of Oceanography, University of Rhode.

Long-term variability of the Kuroshio Transport East of Taiwan and the climate it conveys Mao-Lin Shen 1 Yu-Heng Tseng 1,

“Why Ocean Circulation Observations are Important for Climate Studies” Peter Niiler Scripps Institution of Oceanography.

Question: Why 45 o, physics or math? andare perpendicular to each other 45 o relation holds for boundary layer solution Physics: Coriolis force is balanced.

Rossby wave breaking (RWB) Definition Detection / Measurement Climatology Dynamics – Impact on internal variability (NAO / NAM) – Impact on surface turbulent.

North Pacific Gyre Oscillation synchronizes climate fluctuations in the eastern and western North Pacific Lina I. Ceballos1, Emanuele Di Lorenzo1, Niklas.

SWOT: A HIGH-RESOLUTION WIDE-SWATH ALTIMETRY MISSION

Decadal Variability, Impact, and Prediction of the Kuroshio Extension System B. Qiu 1, S. Chen 1, N. Schneider 1 and B. Taguchi 2 1. Dept of Oceanography,

Wind-driven circulation II ●Wind pattern and oceanic gyres ●Sverdrup Relation ●Vorticity Equation.

Decadal variability in the Indo-Pacific ocean inferred from satellite data and ECCO assimilation Tong Lee NASA Jet Propulsion Laboratory, California Institute.

Observed influence of North Pacific SST anomalies on the atmospheric circulation Claude Frankignoul and Nathalie Sennéchael LOCEAN/IPSL, Université Pierre.

Michael J. McPhaden, NOAA/PMEL Dongxiao Zhang, University of Washington and NOAA/PMEL Circulation Changes Linked to ENSO- like Pacific Decadal Variability.

Exploring the mesoscale activity in the Solomon Sea: a complementary approach with a numerical model and altimetric data L. Gourdeau 1, J. Verron 2, A.

Sharing the results of high- resolution ocean general circulation model under a multi-discipline frame work-a review of OFES activities Yukio Masumoto.

HYCOM and GODAE in Relation to Navy Ocean Prediction An Overview Presented by Harley Hurlburt Naval Research Laboratory Stennis Space Center, MS

A Dynamical Model of the Beaufort Gyre: A Balance between Ekman Pumping and Eddy Fluxes Jiayan Yang & Andrey Proshutinsky Woods Hole Oceanographic Institution.

Wind-driven halocline variability in the western Arctic Ocean

Wind-driven circulation

Satellite Data for CLIMODE

Ekman layer at the bottom of the sea

Spatial Modes of Salinity and Temperature Comparison with PDO index

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

Influence of mesoscale on larger scales mean state and variability and other layman thoughts... Thierry Huck, Olivier Arzel, Quentin Jamet Laboratoire.

5th Workshop on "SMART Cable Systems: Latest Developments and Designing the Wet Demonstrator Project" (Dubai, UAE, April 2016) Contribution of.

Mass Transport Streamfunction from a 1/16 1

Abyssal Current Steering of Upper Ocean Current Pathways in an Ocean Model with High Vertical Resolution by 1Harley E. Hurlburt, 1E. Joseph Metzger, 1Patrick.

Week 6-7: Wind-driven ocean circulation Tally’s book, chapter 7

Climatological mean features and interannual to decadal variability of ring formations in the Kuroshio Extension.

Objectives and Requirements of SWOT for Observing the Oceanic Mesoscale Variability (based on a workshop held at Scripps Institution of Oceanography, April.

Presentation transcript:

Observations of Mesoscale* Ocean Circulation: Present and Future Observations of Mesoscale* Ocean Circulation: Present and Future Bo Qiu Dept of Oceanography University of Hawaii Bo Qiu Dept of Oceanography University of Hawaii A UH profiling float was being deployed from R/V Revelle in Kuroshio Extension, May ‘05 Schematic of Satellite Altimetry * mesoscale = 10s~100s km

Altimeter-derived rms sea surface height variability (cm) Eddy “desert” Abundant mesoscale eddies

Altimeter-derived rms sea surface height variability (cm) Schematic of NW Pacific Ocean Circulation

Semi-monthly Kuroshio Extension paths (1.7m SSH contours) Stable yrs: , Unstable yrs: ,

(a) Upstream KE path length ( °E) (b) Eddy kinetic energy ( °E, 32-38°N) Stable yrs: , Unstable yrs: ,

Pacific Decadal Oscillations (Mantua et al. 1997) Center of action of wind forcing is in the eastern half of the N Pacific basin Positive (negative) phase of PDO generates – (+) local SSH through Ekman divergence (convergence)

Yearly SSH anomaly field in the North Pacific Ocean + -

2004 stable 2005 unstable 20 floats 28 floats UH-KESS profiling float measurements 1500db 5 days Kuroshio Extension System Study Observing Array/Timeline

Distributions of semi-monthly profiling float T/S data (contours: SSH from satellite altimeters)

T(z) and PV(z) evolution in the KE recirculation gyre mixed layer depth subtropical mode water KESS period

PV values on 25.4 σ θ surface (~250m)

from mesoscale to submesoscale … What’s Next ? SSH snapshot from the NLOM model for 04/10/2006 Right: from the original 1/32°-resolution output Left: reduced to 1/2°-resolution (observable by current nadir-looking satellite altimeters)

SSH vs vorticity snapshot from the NLOM model for 04/10/2006 original 1/32°-resolutionreduced 1/2°-resolution

original 1/32°-resolution anticyclonic vorticity cyclonic vorticity PDF of modeled vorticity as a function of intensity Ratio of anticycl./cyclonic vorticities

Recommended to NASA by the NRC Decadal Survey for Oceanographic and Hydrological Applications: 1.Point vs 200km- wide swath measurements 2.Repeat cycle: 10 days vs 3~5 days (at mid-high lat.) “Surface Water and Ocean Topography (SWOT)” Mission

Approximate Time and Space Scales of Oceanic Variability Chelton (2001)

center of PDO forcing L H L EKE levelSSHA along 34°NSSH fieldPDO index 145E165E155E135E

Yearly-mean sea surface height field

Kuroshio Extension System Study (KESS) is designed to study KE’s transition/impact from a stable to unstable state KESS period

T(z), S(z) and PV(z) evolution in the KE recirculation gyre mixed layer depth subtropical mode water

Altimeter-derived rms sea surface height variability (cm) Schematic of NW Pacific Ocean Circulation Eddy “desert” Abundant eddies