Monitoring and modeling of phytoplankton and marine primary - - PowerPoint PPT Presentation

▶
monitoring and modeling of phytoplankton and marine
SMART_READER_LITE
LIVE PREVIEW

Monitoring and modeling of phytoplankton and marine primary - - PowerPoint PPT Presentation

Jun 04, 2023 247 likes •457 views

Monitoring and modeling of phytoplankton and marine primary production Lasse H. Pettersson, Lasse H. Pettersson, Annette Samuelsen and Anton Korosov Annette Samuelsen and Anton Korosov lasse.pettersson@nersc.no lasse.pettersson@nersc.no

slide-1
SLIDE 1

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Monitoring and modeling of phytoplankton and marine primary production

Lasse H. Pettersson, Lasse H. Pettersson, Annette Samuelsen and Anton Korosov Annette Samuelsen and Anton Korosov lasse.pettersson@nersc.no lasse.pettersson@nersc.no Nansen Environmental and Remote Sensing Center, Bergen, Norway

slide-2
SLIDE 2

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Outline

  • The ”problem” – the Norwegian perspective
  • Biomass and ocean dynamics
  • Satellite remote sensing
  • Marine ecosystem modelling
  • Onset of the spring bloom
  • Monitoring and modelling of marine

productivity

  • Indian Ocean modelling
slide-3
SLIDE 3

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

The Problem – Norwegian “view”

  • Eutrophication

Eutrophication and Global Change and Global Change

  • Increased Transport and Spreading

Increased Transport and Spreading

  • Harmful Algae Blooms (

Harmful Algae Blooms (HABs HABs)

  • Environmental Effects:

Environmental Effects:

  • Fish & Shellfish Aquaculture
  • Fisheries & Wild Life
  • Coastal Zone Biodiversity
  • Health
  • Recreation & Tourism
  • Off-shore Industry
  • etc.
slide-4
SLIDE 4

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

How physical processes that influence marine organisms

Illustration from Svein Sundby, IMR

slide-5
SLIDE 5

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

  • Bio

Bio-physical parameters: physical parameters:

– Chlorophyll Chlorophyll-a concentration a concentration - Plankton biomass Plankton biomass – Totalt Suspended matter Totalt Suspended matter - Sediments Sediments – Dissolved Organic Matter Dissolved Organic Matter- Yellow Substance (YS) Yellow Substance (YS) – RGB “true” colour image RGB “true” colour image- The water colour The water colour – Sea surface temperature (SST): Sea surface temperature (SST): Currents and Currents and advection of water masses advection of water masses

  • Additional parameters

Additional parameters

– – Diffuse attenuation coefficient: Diffuse attenuation coefficient: Light attenuation Light attenuation – Solar radiation (PAR): Solar radiation (PAR): Available light Available light

Satellite-based parameters

slide-6
SLIDE 6

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Data courtesy: Remote Sensing Group, PML, UK / NASA SeaWiFS Project

slide-7
SLIDE 7

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

The ToPAZ model system

  • ToPAZ3: Atlantic and Arctic

– HYCOM + EVP sea-ice model – 11-16 km horizontal resolution – 22 hybrid layers

  • EnKF

– 100 members

  • Observations and Data assimilation

– Sea Level Anomalies (CLS) – Sea Surface Temperatures (NOAA) – Sea Ice Concentration (NSIDC) – Sea ice drift (CERSAT) – Argo T/S profiles (Coriolis)

  • Runs weekly, 10 days forecasts

– ECMWF forcing – Exploited at met.no since March 2008

  • Set up for the Indian Ocean
slide-8
SLIDE 8

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Couple physical-biological model

  • NORWECOM

– Implemented in V2.2 of HYCOM – started from Climatology in 1996 – Use nutrients in rivers from GlobalNEWS hydrological model – Hindcast and testing

Biogenic silica Flagellates Detritus Diatoms Silicate Nitrate

Oxygen

Phosphate

Sinkin g Sinkin g Sinkin g Sinkin g Sinkin g Sinkin g Sinkin g Sinkin g

Mesozooplankton Microzooplankton

slide-9
SLIDE 9

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Monitoring and Modelling: Near real-time bloom prediction - 1. August 2005

http://HAB.nersc.no http://HAB.nersc.no http://moncoze.met.no http://moncoze.met.no

slide-10
SLIDE 10

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Model snapshot of surface chlorophyll in the end of April in HYCOM-NORWECOM The model resolution is 2.3 km Satellite image of chlorophyll from the same area on April 30, 2009.

Nested NORWECOM

slide-11
SLIDE 11

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Onset of spring phytoplankton bloom from satellite data

  • 1998

2000 2002 2004 2006 2008 2010 100 105 110 115 120 125 130 135 140 145 150

Year Julian Day

1998 2000 2002 2004 2006 2008 2010 100 105 110 115 120 125 130 135 140 145 150

Year Julian Day

slide-12
SLIDE 12

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Onset of the Spring bloom – Norwegian Sea

slide-13
SLIDE 13

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

The Norwegian Sea

Nitrate (mg/m3)

slide-14
SLIDE 14

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Primary production

Nordic Seas (1998- 2006)

slide-15
SLIDE 15

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

ToPAZ: Modeled Sea Surface Temperature

slide-16
SLIDE 16

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Validation against Satellite Sea Surface Temperatures

slide-17
SLIDE 17

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Wiggert, J. D., Murtugudde, R. G., and Christian, J. R., 2006. Annual ecosystem variability in the tropical Indian Ocean: Results of a coupled bio-physical ocean general circulation model, Deep Sea Research Part II: Topical Studies in Oceanography, 53, 644-676

slide-18
SLIDE 18

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Summary - Indian Ocean ecosystem

  • Indian (ISRO), European (ESA) and US satellite

EO based monitoring systems

  • Regional and global verified EO products are

available

  • Assimilation of EO, in situ and Argo data in

models

  • Regional high resolution coupled ocean model
  • Ecosystem model (to be) implemented
  • Results to be validated
  • To be used in climate assessment and adaptation

studies

slide-19
SLIDE 19

WCRP CORDEX workshop, IITM, Pune, India, 25-26th February, 2012

Thank You! Thank You!