Hurricane Igor Impacts on the Stratification and Phytoplankton Bloom over the Grand Banks Guoqi Han 1, Zhimin Ma 2, Nancy Chen 1 1 Northwest Atlantic Fisheries.

Slides:

Advertisements

Similar presentations

Carmen E. Morales - Samuel Hormazabal Isabel Andrade - Marco Correa-Ramírez Universidad de Concepción P. Universidad Católica de Valparaíso CHILE (FONDECYT.

Advertisements

Lesson 12: Technology I Technology matters Most of the topics we’ve learned so far rely on measurement and observation: – Ocean acidification – Salinity.

m/s Water mass subduction & eddy effects on phytoplankton distributions in the Santa Barbara Channel, California Libe Washburn 1, Mark Brzezinski.

VARIABILITY OF OCEAN CO 2 PARTIAL PRESSURE AND AIR-SEA CO 2 FLUXES IN THE SUBANTARCTIC ZONE OF THE SOUTHERN OCEAN J. Boutin (1), L. Merlivat (1) and K.

Dynamics V: response of the ocean to wind (Langmuir circulation, mixed layer, Ekman layer) L. Talley Fall, 2014 Surface mixed layer - Langmuir circulation.

Coastal Upwelling Equatorward winds along a coastline lead to offshore Ekman transport Mass conservation requires these waters replaced by cold, denser.

The South Atlantic Bight Cape Hatteras Cape Canaveral.

The California Current and Coastal Upwelling Allison Parker Physical Oceanography November 20, 2007.

Temporal scales of coastal variability and land-ocean processes J. Salisbury, J. Campbell, D. Vandemark, A. Mahadevan, B. Jonsson, H. Xue, C. Hunt.

Physical Controls on Phytoplankton Would you expect a fall bloom of phytoplankton? What would end it?

Coastal Upwelling Equatorward winds along a coastline lead to offshore Ekman transport Mass conservation requires these waters replaced by cold, denser.

Observations of Ocean response to Hurricane Igor: A Salty Tropical Cyclone Wake observed from Space N.Reul 1, Y, Quilfen 1, B. Chapron 1, E. Vincent 2,

Growth and decay of the mixed layer and seasonal thermocline from November 1989 to September 1990 at the Bermuda Atlantic Time-series Station (BATS) at.

Effects of Climate Change on Marine Ecosystems David Mountain US CLIVAR Science Symposium 14 July 2008.

Define Current decreases exponentially with depth. At the same time, its direction changes clockwise with depth (The Ekman spiral). we have,. and At the.

Effects of Ocean-Atmosphere Coupling in a Modeling Study of Coastal Upwelling in the Area of Orographically-Intensified Flow Natalie Perlin, Eric Skyllingstad,

Sensitivity of High-resolution Tropical Cyclone Intensity Forecast to Surface Flux Parameterization Chi-Sann Liou, NRL Monterey, CA.

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

Define Current decreases exponentially with depth and. At the same time, its direction changes clockwise with depth (The Ekman spiral). we have,. and At.

Wind-Driven shelf dynamics and their influences on river plumes: implications for surface parcel transport Ed Dever, Oregon State University Image: Hickey.

Joaquim I. Goes and Helga Gomes Bigelow Laboratory for Ocean Sciences Increasing productivity in the Arabian Sea linked to shrinking snow caps – How satellites.

From Ocean Sciences at the Bedford Institute of Oceanography Temperature – Salinity for the Northwest.

Modeling the upper ocean response to Hurricane Igor Zhimin Ma 1, Guoqi Han 2, Brad deYoung 1 1 Memorial University 2 Fisheries and Oceans Canada.

Upper ocean currents, Coriolis force, and Ekman Transport Gaspard-Gustave de Coriolis Walfrid Ekman.

Southern Ocean Surface Measurements and the Upper Ocean Heat Balance Janet Sprintall Sarah Gille Shenfu Dong Scripps Institution of Oceanography, UCSD.

Melting glaciers help fuel productivity hotspots around Antarctica

What is the key science driver for using Ocean Colour Radiometry (OCR) for research and applications? What is OCR, and what does it provide? Examples of.

IoE The Basics of Satellite Oceanography. 8. Mesoscale variability and coastal pollution Lecture 8 Mesoscale variability and coastal pollution.

U. Victoria Regional Oceanography Affecting the NEPTUNE Array Ken Denman School of Earth and Ocean Sciences & Ocean Networks Canada University of Victoria,

Seasonal evolution of the surface mixed layer Meri Korhonen.

Factors contributing to variability in pCO 2 and omega in the coastal Gulf of Maine. J. Salisbury, D. Vandemark, C. Hunt, C. Sabine, S. Musielewicz and.

1 Melting glaciers help fuel productivity hotspots around Antarctica Kevin R. Arrigo Gert van Dijken Stanford University Melting glaciers help fuel productivity.

 one-way nested Western Atlantic-Gulf of Mexico-Caribbean Sea regional domain (with data assimilation of SSH and SST prior to hurricane simulations) 

Class 8. Oceans Figure: Ocean Depth (mean = 3.7 km)

ISAC Contribution to Ocean Color activity Mediterranean high resolution surface chlorophyll mapping Use available bio-optical data sets to estimate the.

Contributions to SST Anomalies in the Atlantic Ocean [Ocean Control of Air-Sea Heat Fluxes] Kathie Kelly Suzanne Dickinson and LuAnne Thompson University.

Observations of Ocean response to Hurricane Igor: A Salty Tropical Cyclone Wake observed from Space Nicolas Reul 1, Joseph Tenerelli 2 1 IFREMER, Laboratoire.

Vertical Diffusion: (orange arrows) Nitrate diffusion rates were calculated for the inner shelf by splitting the water column into three layers: the upper.

Wind-SST Coupling in the Coastal Upwelling --- An Empirical Numerical Simulation X. Jin, C. Dong, and J. C. McWilliams (IGPP/UCLA) D. B. Chelton (COAS/OSU)

Coastal Oceanography Outline Global coastal ocean Dynamics Western boundary current systems Eastern boundary current systems Polar ocean boundaries Semi-enclosed.

Comparison of Vertical Mixing Parameterizations for the Wind- Driven Coastal Ocean Scott Durski Oregon State University Thanks to: Dale Haidvogel, Scott.

Jerome Fiechter Ocean Sciences Department University of California, Santa Cruz ROMS Workshop, Grenoble, 6-8 October 2008 Seasonal and Interannual Ecosystem.

Joseph Maina & David Obura spatial data for ecosystems vulnerability assessments.

Forces and accelerations in a fluid: (a) acceleration, (b) advection, (c) pressure gradient force, (d) gravity, and (e) acceleration associated with viscosity.

Jeff Vieser. General Information  Part of the North Atlantic Subpolar Gyre.  Studies began in the 1930’s.  Moves approximately 7.5 Sv of water.  Driven.

TS 15 The Great Salt Lake System ASLO 2005 Aquatic Sciences Meeting Climatology and Variability of Satellite-derived Temperature of the Great Salt Lake.

Bimodal Behavior of the Seasonal Upwelling off the northeastern coast of Taiwan Yu-Lin Eda Chang Department of Earth Sciences, National Taiwan Normal University,

THE BC SHELF ROMS MODEL THE BC SHELF ROMS MODEL Diane Masson, Isaak Fain, Mike Foreman Institute of Ocean Sciences Fisheries and Oceans, Canada The Canadian.

Time Series Observations along Line P Frank Whitney Emeritus, Fisheries and Oceans Canada.

Horizontal density structure and restratification

Temperature and vertical stratification Metabolism: Q10 Preference & tolerance Poikilothermic or ectothermic vs. homeothermic or endothermic Thermocline.

Wind-driven halocline variability in the western Arctic Ocean

Impact of a warm ocean eddy’s circulation on hurricane-induced sea surface cooling with implications for hurricane intensity Richard M. Yablonsky and Isaac.

Define and we have • At the sea surface (z=0), the surface current flows at 45o to the right of the wind direction Depends on constant Az => • Current.

Define and we have • At the sea surface (z=0), the surface current flows at 45o to the right of the wind direction Depends on constant Az => • Current.

Define and we have • At the sea surface (z=0), the surface current flows at 45o to the right of the wind direction Depends on constant Az => • Current.

GlobColour: New/Future products

Coastal Ocean Observation Lab

Wind-driven changes of current, temperature, and chlorophyll

Yi Xu, Robert Chant, and Oscar Schofiled Coastal Ocean Observation Lab

Shelf-basin exchange in the Western Arctic Ocean

EOSC 112: THE FLUID EARTH OCEAN STRUCTURE

Nicolas Reul1, Joseph Tenerelli2

Values of density st (curved lines) and the loci of maximum density and freezing point (at atmospheric pressure) for seawater as functions of temperature.

TALLEY Copyright © 2011 Elsevier Inc. All rights reserved

Workshop on using Water Quality Forecasting in Decision Making

Impacts of Air-Sea Interaction on Tropical Cyclone Track and Intensity

Evolution and Impact of an Upwind Coastal Jet

Upper ocean currents, Coriolis force, and Ekman Transport

Wind-driven currents and upwelling

Presentation transcript:

Hurricane Igor Impacts on the Stratification and Phytoplankton Bloom over the Grand Banks Guoqi Han 1, Zhimin Ma 2, Nancy Chen 1 1 Northwest Atlantic Fisheries Centre Fisheries and Oceans Canada 2 Memorial University of Newfoundland (Han et al., 2012) Supported by Canadian Space Agency GRIP Program

Hurricane Igor Track Newfoundland Pasch and Kimberlain,2010

Hurricane Igor

Objectives To examine the changes of SST, stratification and phytoplankton concentration To examine the linkage between the physical changes and phytoplankton bloom

Satellite SST and Chlorophyll Data  AVHRR 8-d 4-km SST from NOAA.  Merged MERIS and MODIS 8-d 4-km Chlorophyll from the ACRI-ST GlobColour Service.

Other Data  Buoy SST at B1 (inshore) and B2 (continental slope) from EC  T/S profiles at Station 27 off St. John’s from DFO AZMP Program

SST Changes SST decreased by 6 o C (adjustment time 10 h), uniform in space

Chlorophyll Changes Chlorophyll increased by 0.8 mg/m 3

Stratification Changes at Station 27 MLD (the interface depth) deepened from 18 to 60 m Deepening rate: -8.5 x m/s (by assuming the SST and the MLD adjustment time the same)

Upwelling due to Wind Stress Curl Translation speed: 60 km/h Maximum sustained wind: 35 m/s Diameter of the maximum wind: 180 km Estimated upwelling speed: 3.4x10 -4 m/s Upwelling favorable alongshore wind: 10 m/s Estimated upwelling speed: 1.4x10 -5 m/s (by assuming a horizontal scale of 100 km) Coastal Upwelling

Entrainment due to Wind Stirring W w at Station 27 A.MLD deepening: -8.5 x m/s B. Ekman pumping (W E ): 3.4x10 -4 m/s C. Coastal upwelling (W C ): 1.4 x10 -5 m/s W w =A-B-C = -12 x m/s Wind stirring effect is predominant.

Conclusions  Hurricane Igor caused an SST decrease of 6 o C over the Grand Banks.  The storm triggered an increase of 0.8 mg/m 3 in the phytoplankton concentration.  In situ measurements show a deepening of the mixed–layer depth from 18 to 60 m.  The bloom was triggered mainly by the vertical mixing due to the wind stirring effect.