Acoustic backscatter observation of zooplankton: responses to environmental forcing in the equatorial Pacific from diurnal to interannual timescales M.-H.

Slides:



Advertisements
Similar presentations
The effect of climate change and systematic model bias on the monsoon-ENSO system: the TBO and changing ENSO regimes Andrew Turner
Advertisements

Temporal structure of ENSO in 20 th Century Climate simulations Antonietta Capotondi NOAA/Earth System Research Laboratory Collaborators: Andrew Wittenberg,
Evolution of the El Niño : The Role of Intraseasonal to Interannual Time Scale Dynamics Michael J. McPhaden NOAA/PMEL Seattle, Washington CLIVAR.
The flavor of El Nino in a changing climate Sang-Wook Yeh Hanyang University Colleagues: Jong-Seong Kug, Boris Dewitte, MinHo Kwon, Ben Kirtman,
Term paper topics due 1 week from today (Friday, October 17).
The causes of extreme rainfall in East Africa: insights from observed data and GCMs Emily Black, Julia Slingo and Ken Sperber.
Class #16 Monday, October 4, 2010 Class #16: Monday, October 4 Chapter 8 Oceanography and El Niño/La Niña/ENSO 1.
The ENSO : El Niño and the Southern Oscillation J.P. Céron (Météo-France) and R. Washington (Oxford University)
The 1997/98 ENSO event. Multivariate ENSO Index Index is based on 6 parameters relevant to phase.
SSH anomalies from satellite. Observed annual mean state Circulation creates equatorial cold tongues eastern Pacific Trades -> Ocean upwelling along Equator.
Equatorial Circulation Subtle changes in winds give rise to complicated surface current patterns Equatorial Undercurrent Focus on Pacific circulation,
Tropical Ocean-Global Atmosphere (TOGA) Tropical Atmosphere Ocean (TAO) Array Mira Losic Dec 2, 2010.
El Nino – Southern Oscillation - Southern Oscillation (atmosphere) - El Nino (ocean) - change in equatorial Pacific circulation - produces global climate.
The 1997/98 ENSO event. Multivariate ENSO Index Index is based on 6 parameters relevant to phase.
Yukio Masumoto (RIGC, JAMSTEC). Outline  Indian Ocean Observing System - Background and present status  Examples of key phenomena observed by IndOOS.
Impacts of El Nino Observations Mechanisms for remote impacts.
El Nino Southern Oscillation (ENSO) 20 April 06 Byoung-Cheol Kim METEO 6030 Earth Climate System.
MODULATING FACTORS OF THE CLIMATOLOGICAL VARIABILITY OF THE MEXICAN PACIFIC; MODEL AND DATA. ABSTRACT. Sea Surface Temperature and wind from the Comprehensive.
Modes of Pacific Climate Variability: ENSO and the PDO Michael Alexander Earth System Research Lab michael.alexander/publications/
Highways in the Sea (Chapter 9)
Mike McPhaden NOAA/PMEL Seattle, Washington
SIO 210: ENSO conclusion Dec. 2, 2004 Interannual variability (end of this lecture + next) –Tropical Pacific: El Nino/Southern Oscillation –Southern Ocean.
El Niño Personality Affects Ocean Biology Michelle Gierach Scientist, Oceans and Ice Group Project Scientist, PO.DAAC PO.DAAC Physical Oceanography Data.
Who We Are and Why We are Here? PaCOOS Presentation to Chet Koblinski, Ned Cyr and Jack Dunnigan Scripps Institution of Oceanography, 6 June 2005 We are.
Triggering of the Madden-Julian Oscillation by equatorial ocean dynamics. Benjamin G. M. Webber IAPSO-IAMAS JM10: Monsoons, Tropical Cyclones and Tropical.
Janelle Fleming Interdisciplinary Seminar September 16, 1998 The North Pacific Ocean event: A unique climate shift, natural decadal variability,
ENSO Prediction and Policy Why Predict ENSO? How do we predict ENSO? Why is it possible ? What information do predictions offer? What to do with this information?
Equatorial Pacific primary productivity: Spatial and temporal variability and links to carbon cycling Pete Strutton College of Oceanic and Atmospheric.
Ocean Currents Are masses of ocean water that flow from one place to another. Water masses in motion Surface Currents - wind driven currents move water.
The Global Tropical Moored Buoy Array: Status & Plans Mike McPhaden OCO Review 3-5 Sept 2008 RAMA PIRATA TAO/TRITON.
The Influence of the Indonesian Throughflow on the Eastern Pacific Biogeochimical Conditions Fig.1 The last year of the two runs is used to force offline.
Class 28: Oceanography. Class updates:  Reading: Section , , 16.5 Today’s topics:  Ocean water  Ocean currents  El Nino/La Nina.
Annual and semi-annual variations of equatorial Atlantic circulation associated with basin mode resonance Peter Brandt 1, Martin Claus 1, Richard J. Greatbatch.
FORSGC/JAMSTEC Indian Ocean Activities
Southern Oscillation- Atmospheric component of ocean's El Niño. Oscillation in the distribution of high and low pressure systems across the equatorial.
Seasonal Change in the Upper Ocean (The Annual Cycle)
Paper review R CHC. [Van Loon and Shea, 1985/1987] Covarying warm SST and low SLP anomalies in the western and central subtropical South Pacific.
R CHC. Outline ENSO – EP and CP ENSO ACW – ACW – ENSO and ACW GEW – GEW – ACW and GEW – ENSO and GEW – ENSO and GEW and ACW Indian Ocean – ENSO.
Climate Change El-Nino Southern Oscillation (ENSO)Phenomena.
The El Niño Southern Oscillation (ENSO) Corey J Gabriel
Genesis, Evolution, and Termination Michael McPhaden,Yukari Takayabu, Toshio Iguchi, Misako Kachi, Akira Shibata and Hiroshi Kanzawa Ian Bailey Atmospheric.
Time scales of physics vs. biology ENSO effects on biology Pacific Decadal Oscillation (PDO)
1 Opposite phases of the Antarctic Oscillation and Relationships with Intraseasonal to Interannual Activity in the Tropics during the Austral Summer (submitted.
Contrasting Summer Monsoon Cold Pools South of Indian Peninsula Presented at ROMS/TOMS Asia-Pacific Workshop-2009, Sydney Institute of Marine Sciences,
A Generalized Ekman Model for Frontal Regions Meghan F. Cronin William S. Kessler NOAA Pacific Marine Environmental Laboratory Cronin, M.F. and W.S. Kessler.
Section (ii) ENSO - Theory
Estimating Vertical Eddy Viscosity in the Pacific Equatorial Undercurrent Natalia Stefanova Masters Thesis Defense October 31, 2008 UW School of Oceanography.
Michael J. McPhaden NOAA/Pacific Marine Environmental Laboratory Seattle, Washington IAPSO Dynamic Planet Symposium Cairns, Australia 24 August 2005 ENSO.
Southern California Coast Observed Temperature Anomalies Observed Salinity Anomalies Geostrophic Along-shore Currents Warming Trend Low Frequency Salinity.
Mike McPhaden--El Niño & La Niña John Lyman--Global Warming Dick Feely--Ocean Acidification The Ocean’s Role in Climate Variability and Change NOAA/Pacific.
Matthew J. Hoffman CEAFM/Burgers Symposium May 8, 2009 Johns Hopkins University Courtesy NOAA/AVHRR Courtesy NASA Earth Observatory.
Michael J. McPhaden, NOAA/PMEL Dongxiao Zhang, University of Washington and NOAA/PMEL Circulation Changes Linked to ENSO- like Pacific Decadal Variability.
TAV / PIRATA-17 Meeting, Kiel, Germany
M. Roberts, P. L. Vidale, D. Stevens, Ian Stevens, Len Shaffrey, UJCC team with help from many others at Met Office and NCAS-Climate and CCSR/NIES/FRCGC.
ADCP observations of migration patterns of zooplankton in the Cretan Sea E. Potiris, C. Frangoulis, M. Ntoumas, M. Pettas, A. Kalampokis and G. Petihakis.
Multi-disciplinary real-time moorings
Wind-driven changes of current, temperature, and chlorophyll
ENSO - Theory How does the phase of ENSO reverse?
The El Niño/ Southern Oscillation (ENSO) Cycle Lab
Oceans ~ Continued  Messana.
Major ocean current systems
TAV / PIRATA-17 Meeting, Kiel, Germany
The 1997/98 ENSO event.
Section (ii) ENSO - Theory
The 1997/98 ENSO event.
The 1997/98 ENSO event.
Time scales of physics vs. biology
LCDR John Hendrickson 17SEP2008
El Niño and La Niña.
Ocean/atmosphere variability related to the development of tropical Pacific sea-surface temperature anomalies in the CCSM2.0 and CCSM3.0 Bruce T. Anderson,
Presentation transcript:

acoustic backscatter observation of zooplankton: responses to environmental forcing in the equatorial Pacific from diurnal to interannual timescales M.-H. Radenac (LEGOS/IRD, France), P. E. Plimpton (PMEL, USA), A. Lebourges-Dhaussy (IRD, France), M. J. McPhaden (PMEL, USA) major El Niño - Dec El Niño - Oct non El Niño - May 2001 surface chlorophyll (mg m -3 ) 165°E 170°W 140°W  equatorial upwelling: mesotrophic ecosystem (chl  0.2 mg m -3 )  warm pool: oligotrophic ecosystem (chl < 0.1 mg m -3 )  west: moderate mesotrophic ecosystem (chl > 0.1 mg m -3 )

RD Instruments, 1990 transducer characteristics beam spreading and absorption scatterers the TAO/TRITON mooring array ATLAS  meteo  T(z), S(z) ADCP  U(z), V(z)  E  kHz RDI narrowband ADCP; upward-looking configuration   t = 1 hour;  z = 5 m  daytime Sv at noon  2 hours nighttime Sv at midnight  2 hours

two ecosystems S v night S v day T S v night S v day T oligotrophic ecosystem (warm pool) mesotrophic ecosystem (upwelling) depth Sv night (dB) 170°W, 0° Z 29°C Z 20°C Z 29°C = depth of the warm layerZ 20°C = depth of the middle of the thermocline diurnal cycles

lunar cycle 170°W, 0° Sv night (dB) depth September 2003 moon cycle darknessmoon light S v (dB)

influence of stratification/food availability 140°W, 0° depth Sv night (dB) Z 29°C Z 20°C downwelling Kelvin waves El NiñoLa Niña depth chlorophyll (mg m -3 ) warm poolupwelling

influence of westerly winds in the west 165°E, 0° Sv night (dB)U wind (m s -1 )165°E,0° longitude depth 165°E, 0° Sv night (dB) 165°E, 0° zonal current (m s -1 ) equator surface chlorophyll (mg m -3 ) Z 29°C Z 20°C surface chl December 2002

conclusion 1st attempt to use long S v time-series in the equatorial Pacific biological and physical information at the same timescale different diurnal migrating patterns in the oligotrophic warm pool and in the mesotrophic upwelling influence of light, stratification and/or food availability, horizontal advection what do we see? at 150 kHz ⇒ targets > 1 cm (mesozooplankton and micronekton) literature review biomass changes different species composition useful for model evaluation? simulated biomass of mid-trophic organisms vs. S v at 170°W Lehodey et al., 2009

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.