Presentation is loading. Please wait.

Presentation is loading. Please wait.

On the role of eddies for coastal productivity and carbon cycling Hartmut Frenzel 1, Nicolas Gruber 2,1, Gian-Kasper Plattner 2, Takeyoshi Nagai 3,1, James.

Published byKevin Watts Modified over 9 years ago

Similar presentations

Presentation on theme: "On the role of eddies for coastal productivity and carbon cycling Hartmut Frenzel 1, Nicolas Gruber 2,1, Gian-Kasper Plattner 2, Takeyoshi Nagai 3,1, James."— Presentation transcript:

1 On the role of eddies for coastal productivity and carbon cycling Hartmut Frenzel 1, Nicolas Gruber 2,1, Gian-Kasper Plattner 2, Takeyoshi Nagai 3,1, James C. McWilliams 1, Zouhair Lachkar 2 1 IGPP & DAOS, UCLA 2 Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Switzerland 3 Tokyo Institute of Fisheries, Japan

2 (gC m -2 yr -1 )

3

4

5 Horizontal resolution: 5 km Vertical resolution: 20 levels climatological forcing WOA01 for T,S; COADS for winds NPZD model Nitrogen based (no iron limitation) Upwelling system focused Fixed stoichiometric ratios of C:N US WEST COAST CONFIGURATION OF ROMS [Gruber et al., DSR I, 2006]

6 USWC-5km ROMS

7 IMPACT OF MESO-SCALE PROCESSES Standard (eddy) run: #define UV_ADV Linear run: #undef UV_ADV (VISC2 = 100 m 2 /s) Both for USWC 5 km configuration

8 (all fluxes: mol C m -2 yr -1 )

9

10 Eddy induced anomalous circulation

11

12 California upwelling: highest TKE and lowest PP

13 NPP: California vs. Canary Current System [Gruber et al., in prep. 2007 ]

14 UWI: California vs. Canary Current System [Gruber et al., in prep. 2007]

15 EKE: California vs. Canary Current System [Gruber et al., in prep. 2007]

16 [Gruber et al., in prep. 2007]

17 NPP/UWI and NPP/EKE: California and Canary CS [Gruber et al., in prep. 2007]

18 SUMMARY Meso- and submesoscale processes tend to suppress primary production and air-sea fluxes of CO 2 in coastal upwelling systems. This is due to an eddy-induced "overturning" circulation that counteracts the upwelling and leads to a “leakage” of nutrients out of the upwelling region. First results indicate that the differing levels of eddy kinetic energy in the various upwelling systems are a primary reason for their large differences in primary production.

19 Eddy-partNon-eddy part EDDY CONTRIBUTION TO OFFSHORE TRANSPORT Nagai et al. (in prep. 2007) Offshore distance Total offshore transport of NO 3 & NH 4 Eddy-tracking Fraction by Eddies >60% of offshore transport by eddies

20 MECHANISMS OF OFFSHORE TRANSPORT Filament transport Subduction Westward propagating eddies Upwelling Nearshore ~200km Beyond 200 km

21 Acknowledgments Funding: NASA and NSF Computer time: NCSA

Download ppt "On the role of eddies for coastal productivity and carbon cycling Hartmut Frenzel 1, Nicolas Gruber 2,1, Gian-Kasper Plattner 2, Takeyoshi Nagai 3,1, James."

Similar presentations

Regional and Coastal Circulation Modeling: California Current System Art Miller Scripps Institution of Oceanography ECOFOR Workshop Friday Harbor, WA September.

Regional and Coastal Circulation Modeling: California Current System Art Miller Scripps Institution of Oceanography ECOFOR Workshop Friday Harbor, WA September.
Ocean Biogeochemistry (C, O 2, N, P) Achievements and challenges Nicolas Gruber Environmental Physics, ETH Zürich, Zurich, Switzerland. Using input from.

Ocean Biogeochemistry (C, O 2, N, P) Achievements and challenges Nicolas Gruber Environmental Physics, ETH Zürich, Zurich, Switzerland. Using input from.
Seasonal and interannual variability in the East Sea ecosystem: effects of nutrient transport through the Korea Strait Chan Joo Jang, and Yuri Oh Korea.

Seasonal and interannual variability in the East Sea ecosystem: effects of nutrient transport through the Korea Strait Chan Joo Jang, and Yuri Oh Korea.
Particle transport and organic carbon fluxes off NW Africa: impact of dust and carbonate G. Fischer (1), M. Iversen (3, 4), G. Karakas (3), N. Nowald (1),

Particle transport and organic carbon fluxes off NW Africa: impact of dust and carbonate G. Fischer (1), M. Iversen (3, 4), G. Karakas (3), N. Nowald (1),
Monique Messié & Francisco Chavez

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

Working Group 4 Coastal Biogeochemistry Forum, June 23-25, 2004 K. Lindsay, G. McKinley, C. Nevison, K. Plattner, R. Seifert Can coastal ecosystems be.
Modeling of Regional Ocean-Atmosphere Feedback in the Eastern Equatorial Pacific; Tropical Instability Waves Hyodae Seo, Art Miller and John Roads Scripps.

Modeling of Regional Ocean-Atmosphere Feedback in the Eastern Equatorial Pacific; Tropical Instability Waves Hyodae Seo, Art Miller and John Roads Scripps.
Experiment Design: Validation: Ocean mesoscale variability was estimated on eddy kinetic energy (EKE), calculated from TOPEX/ Poseidon, ERS-1/-2 and Jason.

Experiment Design: Validation: Ocean mesoscale variability was estimated on eddy kinetic energy (EKE), calculated from TOPEX/ Poseidon, ERS-1/-2 and Jason.
Introduction to Ocean Circulation - Geography 163 Wind-driven circulation of major gyres & surface currents Buoyancy-driven circulation linking the major.

Introduction to Ocean Circulation - Geography 163 Wind-driven circulation of major gyres & surface currents Buoyancy-driven circulation linking the major.
Numerical Simulation of Oceanic Circulation in the Southern California Bight Changming Charles Dong IGPP, UCLA Collaborators: James McWilliams, Meite Blaas,

Numerical Simulation of Oceanic Circulation in the Southern California Bight Changming Charles Dong IGPP, UCLA Collaborators: James McWilliams, Meite Blaas,
Introduction to Ocean Circulation - Geography 163 Wind-driven circulation of major gyres & surface currents Buoyancy-driven circulation linking the major.

Introduction to Ocean Circulation - Geography 163 Wind-driven circulation of major gyres & surface currents Buoyancy-driven circulation linking the major.
Physical Oceanographic Observations and Models in Support of the WFS HyCODE College of Marine Science University of South Florida St. Petersburg, FL HyCode.

Physical Oceanographic Observations and Models in Support of the WFS HyCODE College of Marine Science University of South Florida St. Petersburg, FL HyCode.
CCS dynamics: sensitivity to wind forcing, heat flux and boundary conditions Roms workshop, 2003 X. Capet, P. Penven, P. Marchesiello, J. McWilliams UCLA.

CCS dynamics: sensitivity to wind forcing, heat flux and boundary conditions Roms workshop, 2003 X. Capet, P. Penven, P. Marchesiello, J. McWilliams UCLA.
The transition from mesoscale to submesoscale in the California Current System X. Capet, J. McWilliams, J. Molemaker, A. Shchepetkin (IGPP/UCLA), feb.

The transition from mesoscale to submesoscale in the California Current System X. Capet, J. McWilliams, J. Molemaker, A. Shchepetkin (IGPP/UCLA), feb.
Average circulation, seasonal cycle and mesoscale dynamics of the Peru Current System: A modeling approach Pierrick Penven (IRD), Vincent Echevin (IRD),

Average circulation, seasonal cycle and mesoscale dynamics of the Peru Current System: A modeling approach Pierrick Penven (IRD), Vincent Echevin (IRD),
Submesoscale secondary instability in an upwelling system: mechanisms and implications for upper ocean dynamics X. Capet, J. McWilliams, J. Molemaker,

Submesoscale secondary instability in an upwelling system: mechanisms and implications for upper ocean dynamics X. Capet, J. McWilliams, J. Molemaker,
Multiple-scale Variability in the Southern California Bight Oceanic Current System Changming Charles Dong Institute of Geophysical and Planetary Physics,

Multiple-scale Variability in the Southern California Bight Oceanic Current System Changming Charles Dong Institute of Geophysical and Planetary Physics,
Emanuele Di Lorenzo 1, Mike Foreman 2, Bill Crawford 2 1 Scripps Institution of Oceanography, UCSD, San Diego 2 Institute of Ocean Sciences, Sidney BC.

Emanuele Di Lorenzo 1, Mike Foreman 2, Bill Crawford 2 1 Scripps Institution of Oceanography, UCSD, San Diego 2 Institute of Ocean Sciences, Sidney BC.
ROMS modeling of stormwater plumes and anthropogenic nitrogen inputs in the SCB Eileen Idica PhD candidate, Dept Civil &

ROMS modeling of stormwater plumes and anthropogenic nitrogen inputs in the SCB Eileen Idica PhD candidate, Dept Civil &
COLLABORATORS: P. Estrade, S. Herbette, C. Lett, A. Peliz, C. Roy, B. Sow, C. Roy EDDY-DRIVEN DISPERSION IN COASTAL UPWELLING SYSTEMS California Canary.

COLLABORATORS: P. Estrade, S. Herbette, C. Lett, A. Peliz, C. Roy, B. Sow, C. Roy EDDY-DRIVEN DISPERSION IN COASTAL UPWELLING SYSTEMS California Canary.

Similar presentations

Ads by Google