GODAE Status
This presentation is the property of its rightful owner.
Sponsored Links
1 / 34

Mike Bell (Met Office, UK) Pierre-Yves Le Traon (Ifremer, France) PowerPoint PPT Presentation


  • 108 Views
  • Uploaded on
  • Presentation posted in: General

GODAE Status. Mike Bell (Met Office, UK) Pierre-Yves Le Traon (Ifremer, France) Co-chairs of the International GODAE Steering Team (IGST). Content. The mission & vision for GODAE Achievements and Successes Priorities for GODAE

Download Presentation

Mike Bell (Met Office, UK) Pierre-Yves Le Traon (Ifremer, France)

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Mike bell met office uk pierre yves le traon ifremer france

GODAE Status

Mike Bell (Met Office, UK)

Pierre-Yves Le Traon (Ifremer, France)

Co-chairs of the International GODAE Steering Team (IGST)


Mike bell met office uk pierre yves le traon ifremer france

Content

  • The mission & vision for GODAE

  • Achievements and Successes

  • Priorities for GODAE

  • Recent European developments (Euro-Argo, GMES – My Ocean)


Mike bell met office uk pierre yves le traon ifremer france

The Global Ocean Data Assimilation Experiment

The Mission for GODAE

A practical demonstration of the feasibility & utility of

high-resolution, global analyses & short-range forecasts of 3D temperatures, salinities and currents

Timetable

1997 – 1999 Conceptual development

2000 – 2003 Prototype development

2004 – 2008 Operational demonstration & consolidation


Mike bell met office uk pierre yves le traon ifremer france

Main GODAE activities (2002-2007)

  • Develop/consolidate national systems :

  • From prototype and regional systems to global and pre-operational systems

  • High resolution for mesoscale and coastal applications (e.g. Mercator, NCOF, Mersea)

  • Low resolution + advanced data assimilation for climate research (e.g. ECCO)

  • Develop links with users and applications

  • Development of data and product serving capability

  • Standardisation, harmonization : format, grid, distribution (opendap/LAS)

  • Product assessment and intercomparison

  • Define/agree/implement “common internal metrics”

  • Continue development of ocean state estimation methodologies and modelling

  • Internationalcollaboration

  • Pilot projects

  • Argo, GHRSST-PP

International GODAE Steering Team (IGST) (11 meetings)

GODAE conference (Biarritz, 2002), User Symposium (St Petersburg, 2004),

GODAE Summer School (2004), Symposium/workshop (Beijing, 2006)


Mike bell met office uk pierre yves le traon ifremer france

Achievements and Successes

  • Implementation of observing and data processing system

    • Argo, altimetry, GHRSST-PP, in-situ

  • Implementation of global modelling and data assimilation capabilities

  • Implementation of data and product serving capabilities and standardization

  • Demonstrations of feasibility and utility

  • - see examples

  • Scientific advances

  • - Modelling, data assimilation, scientific validation


Mike bell met office uk pierre yves le traon ifremer france

The pre-GODAE in-situ ocean observing system was clearly inadequate for the global scope of GODAE => Development of Argo : a joint GODAE/CLIVAR pilot project.

Outstanding progress so far thanks to international cooperation.

A global array (3000 floats) is targeted in mid 2007

An efficient data management system is in place.

http://argo.jcommops.org


Mike bell met office uk pierre yves le traon ifremer france

Impact of Argo data in the MERCATOR multivariate data assimilation system (Benkiran et al., 2005)

  • Assimilation of in-situ and satellite data vs assimilation of satellite data (SLA and SST) only.

  • Statistics for year 2003

Rms of differences between in-situ data and model forecast (7-day)

Reference

Without T/S assimilation


Mike bell met office uk pierre yves le traon ifremer france

Implementation: Forecast systems

  • National systems involving research & operational institutes

    • BlueLink – Australia

    • Canadian consortium

    • NLOM and NCOM - USA

    • HYCOM consortium - USA

    • Move & COMPASS-K systems – Japan

    • MERCATOR – France

    • MFS - Italy

    • NCOF consortium (FOAM) – UK

    • TOPAZ - Norway

  • European coordination

    • MERSEA consortium


Mike bell met office uk pierre yves le traon ifremer france

Iran

Gulf of

Oman

Arabian

Peninsula

Feasibility: Forecasting of ocean mesoscale

using altimeter data

SeaWiFS ocean color

1/32° NLOM sea surface height (SSH) and surface currents

26°N

26°N

24°N

24°N

Altimeter data

assimilated

No assimilation

22°N

22°N

20°N

20°N

18°N

18°N

16°N

16°N

56°E

56°E

56°E

58°E

60°E

62°E

58°E

60°E

62°E

58°E

60°E

62°E

(in mg/m3)

(in cm)

0.3

0.4

0.6

1.0

1.6

2.5

4.0

Composite of most recent data

Oct 2-Oct 6 2002, mostly Oct 6

Oct 6 2002

Oct 6 2002

http://www.ocean.nrlssc.navy.mil/global_nlomShriver et al. (JMS, 2007)


Mike bell met office uk pierre yves le traon ifremer france

Interior flow

Boundary flow

Feasibility : improved understanding of the ocean - Tropical-subtropical Exchange

Pycnocline transport at Pacific 10N: showing counteracting effect of boundary & interior flow in regulating tropical heat content on interannual-decadal time scales (Lee & Fukumori 2003, J. Climate)

This causes anomalous off-equatorial circulation, with opposite boundary & interior flows

Wind stress curl anomaly develops off the equator during El Nino


Mike bell met office uk pierre yves le traon ifremer france

Utility: Forecast of Kuroshio Large Meander

  • In 2004 the Japan Meterological Agency made a 60-day forecast

  • of the largest Kuroshio Large Meander for 10 years

  • A large meander induces strong upwelling with impacts on fisheries and

  • the local climate

  • The forecast was front-page news and praised by fisheries agencies


Mike bell met office uk pierre yves le traon ifremer france

Model improvements: Sensitivity Analysis for Re-evaluation of Ocean Observing System Integrating the singular vector with eddy-resolving adjoint model

  • The Japan Meterological Agency (Meteorological Research Institute)

  • have continued a series of OSE/OSSE sensitivity experiments of singular vector

  • analysis for examining the cause/sensitivity of the Kuroshio Large Meander and

  • examining the ocean observing system.

  • The singular vector shows a cause or sensitivity for the meander. The information

  • improves initial condition and forecasting, and gives a candidate of target

  • observation

Result: Kuroshio Large Meander

Cause or Sensitivity

Color: 1200m Temperature Right singular vector

Black line: 0.2m contour of the SSH in background state

(Fujii et al., 2007)


Mike bell met office uk pierre yves le traon ifremer france

Utility: Simulation of lobster larvae tracks

Useful information for fisheries managers on inter-regional dependence

of fish stocks

The red box means

“larval tracksstophere”

Larvae come from both sides

The green box means

“larval tracksstarthere”

Larvae only go east

Credit to [email protected]


Mike bell met office uk pierre yves le traon ifremer france

Other examples of feasibility and utility

  • Surface drift and dispersion predictions for marine safety and counter-pollution

  • Intensification of hurricanes over warm pools

  • Current profile forecasts for off-shore industry

  • Thermal structure forecasts for Defence

  • Research


Working with intermediate users marine pollution the prestige case

Working with intermediate usersMarine Pollution (the Prestige case)

A MERSEA Strand 1 experiment

3D

Ocean

Analysis

N. .Atlantic

Monitoring and

Forecasting systems

Oil

Spill

Drift

Oil Spill

Operational

Systems

OBS

Météo-France

(France)

FOAM (UK)

(12 km resol)

Met.No

(Norway)

MERCATOR (F)

(6 km resol)

Courtesy of B.Hackett


Mike bell met office uk pierre yves le traon ifremer france

Model improvements:

Intercomparisons and metrics

System intercomparisons are important:

- to speed up improvement of systems

- to develop international standards

WOCE

Denmark Strait Section

Potential Temperature

System 1

System 2

System 3

System 4

Buffer Zone North of Denmark Strait

With Relaxation to Climatology


Metrics in godae from mersea work

MOORINGS

XBT lines

SECTIONS and TRANSPORT

WOCE CLIVAR CANADIAN SECTIONS

SOOP

GLOSS TAO PIRATA

MFS MODEL T XBT Observed T

MODEL/WOCE-CLIVAR SECTION

VOLUME TRANSPORT

across FLORIDA Strait :

MODEL/CABLE

Comparison

MODEL/OBS

comparison

Model/Tide gauge

SLA time series

comparison

METRICS in GODAE (from MERSEA work)

Class 1 (regional vertical/horizontal grids)

Class 2 (moorings, gliders, XBT, WOCE/CLIVAR lines..)

Class 3 (volume transport…)

Class 4 (forecasting skills in observation and model space)


Mike bell met office uk pierre yves le traon ifremer france

GODAE Priorities 2006-2008

GODAE demonstration

  • Establish and consolidate base-line systems (GODAE standards).

  • Demonstrations of Impact/Utility = main focus of GODAE. Develop a series of « good » examples of GODAE successes (from observations to users).

    GODAE products

  • Error characterisation: consolidate work on metrics and intercomparison (“GODAE label”). Make sure a minimum set is internationally implemented.

  • Develop product standardization. Ensure interoperability between systems.

    Observing Systems

  • Use the experiment for an improved design of the observing system. Provide clear demonstration of added value and impact on applications. Promote results (space agencies, GMES, GEOSS).

    Transition : from demonstration to operational systems

  • Work with JCOMM on the transition

  • Promote examples of transition to operational systems for the different nations

  • Contribute to the definition of operational oceanography architecture

    New projects/initiatives : coastal and ecosystems

  • Develop links with IMBER (ecosystems from low to high trophic levels).

  • Initiate a specific coastal project (downscaling).


Advance the godae coastal and shelf seas working group csswg

Advance: The GODAE Coastal and Shelf Seas Working group (CSSWG)

  • The usefulness of GODAE systems to coastal and shelf seas forecasting will be one of the measures of the success of GODAE.

  • The mission of the GODAE CSSWG is to define, monitor and promote actions, within GODAE, aimed at the assessment and demonstration of the value of GODAE results for regional, coastal and shelf seas models and forecasting systems

  • Position paper "Towards the assessment and demonstration of the value of GODAE results for coastal and shelf seas models and forecasting systems" P. De Mey, ed., 74pp.

  • 2007 GODAE Coastal workshop, Liverpool, UK, 10-11 October:http://cobs.pol.ac.uk/cobs/CSSWG

  • 2008 GODAE Coastal workshop, planned in Newfoundland, Canada


The godae imber initiative ecosystem modelling

The GODAE – IMBER initiative (Ecosystem modelling)

  • To facilitate dialogue between those developing new

    ecosystem models and the developers of the operational systems.

  • To promote mutual understanding of the requirements of the two communities.

  • Areas of importance

  • Ecosystem modelling & data assimilation

    - Schemes for assimilation of biogeochemical data are under development

    - Current assimilation schemes degrade the biogeochemistry

    - Overall high horizontal and vertical resolution models for the upper ocean are

    needed.

    - Advanced schemes for a finer vertical structure are a key issue for nutrient

    transport.

  • Interaction with coastal and shelf seas systems

  • Support for B-Argo (see friends of Oxygen on Argo)

  • Reanalysis

First GODAE-IMBER Meeting

Paris, France, 12-13 June 2007

Establishment of GODAE-IMBER Working Group

desired to coordinate modelling and observations


Godae in 2007 2008

GODAE in 2007/2008

  • Four workshops in 2007 (preparation of final conference)

    • IMBER/GODAE – Summer 2007

    • OSSEs/OSEs – Observing system (GODAE/CLIVAR) in Fall 2007

    • GODAE Coastal workshop in Fall 2007 and mid 2008

  • IGST meeting, Canada, August 2007 and Spring 2008

  • Final conference in Fall 2008 jointly held with OSTM meeting

  • Special journal issue on GODAE achievements

  • 2nd summer school in Spring 2009


Mike bell met office uk pierre yves le traon ifremer france

Final GODAE conference in Fall 2008 jointly held with OSTM meeting (to be discussed at next IGST meeting)

  • Review of achievements (data systems, modelling/assimilation systems, data and product serving, science issues, applications and users)

  • Observing systems : review, utility and impact, refined requirements, main issues, …

  • The future : GODAE legacy, transition towards operational systems, role of JCOMM, research coordination…

  • Probably over three days

  • Issues on observing systems could/should be jointly held with a St Raphael follow on conference (could the two/three events be linked over one week ?)


Mike bell met office uk pierre yves le traon ifremer france

Summary

  • The essence of GODAE is a practical

  • demonstration of feasibility and utility

  • There have been major achievements in

  • implementing observing and forecasting

  • systems, establishing collaborations and

  • demonstrations of feasibility

  • We are adapting our targets for and approach to

  • demonstrations of utility learning from successes

  • Sustainability of the observing system - remains a most critical issue


Future european initiatives

Future European initiatives

  • Euro-Argo

  • GMES Marine Core Services (My Ocean)


Euro argo

EURO-ARGO

  • Context: ESFRI (European Strategy Forumon Research Infrastructures) (European Commission). Roadmap for new large research infrastructures of pan-European interest.

  • Euro-Argo selected (35 projects – 7 environment sciences)

  • Proposal : Europe establishes an infrastructure for ¼, i.e. 800 floats in operation

    • Requirement : 250 floats per year including regional enhancements (Nordic, Mediterranean and Black seas)


Preparatory phase proposal

Preparatory Phase Proposal

Main expected outcomes :

  • Agreement for long term (10-20 years) operation of Euro-Argo (financial, legal, governance, organisation, technical). Member States (ministerial level)

  • Agreement with EC (GMES, GEO, DG Research) for additional long term EC funding

  • Main technical and organizational issues to be solved

  • Links with international structure


Gmes marine core service and european operational oceanography

GMES Marine Core Serviceand European operational oceanography

07

08

09

10

11

12

13

00

01

02

03

04

05

06

  • Challenge (1): run the European core service on an operational basis

  • Challenge (2) : link definitively with the European and member states main services and applications

  • Challenge (3) : organise an a sustainable basis the link between this operational European service and the existing research networks

...

GMES Phases

Operational

Implementation

Initial

Demonstrate the European maturity of oceanography

Build the GMES marine system, integrating the “core” capacities

(MERSEA)

Run the GMES marine core service, on an operational basis


Mike bell met office uk pierre yves le traon ifremer france

Provider

Provider

MY-OCEAN

European

Core Service

END - USERS

OBSERVATIONS

Provider

Provider

MY OCEAN : a 3-year project to set up and operate the GMES Marine Core Service

The down stream

Cut off

The upstream

cut-off

upstream to our service

... is done (duty) by an

observation agency or center (raw data)

Example : Eumetsat SAF

or the ESA PAC

downstream to our service:

... is done (duty), or will

be better done (skill) by a

specialized agency, a European agency or a national center ; usually already in place

Example : COASTAL SYSTEMS

Data, Model

European added-value


Mike bell met office uk pierre yves le traon ifremer france

  • MyOcean will

    • “deliver regular and systematic reference information (processed data, elaborated products) on the state of the oceans and regional seas:

    • at the resolution required by intermediate users & downstream service providers, of known quality and accuracy,

    • for the global and European regional seas.”

  • Physical state of the ocean, and primary ecosystem

  • For global ocean, and main European basins and seas

  • Large and basin scale ; mesoscale physics

  • Hindcast, Nowcast, Forecast

  • Data, Assimilation and Models


Modelling and forecasting centers and regions

Modelling and Forecasting centers and regions

Arctic GOOS

  • 1. Global

  • 2. Arctic

  • 3. Baltic

  • 4. NWS

  • 5. IBI

  • 6. Med Sea

  • 7 Black Sea

2

NOOS

4

3

BOOS

1

GOOS/

GODAE

1

7

1

6

Black Sea GOOS

5

6

IBI-ROOS

MOON & MedGOOS


Mike bell met office uk pierre yves le traon ifremer france

Example


Mike bell met office uk pierre yves le traon ifremer france

GODAE-OOPC OSSE/OSE meeting

Paris, November 5-7 2007

  • The GODAE initial requirements and a strategy for a global observing system have been described in the OceanObs99 conference book. By the end of GODAE, more specific requirements should be made on the basis of improved understanding of data utility and a series of recommendations for an improved design of the global ocean observing system should be delivered.

  • Global ocean state estimation systems are a powerful means to assess the impact of the observing system, to identify gaps and to improve the efficiency/effectiveness of the observing system. OSEs (Observing System Evaluations) or OSSEs (Observing System Simulation Experiments) are, in particular, useful tools. Impact on applications is another issue and should also guide OSEs/OSSEs studies (e.g.optimizing surface current forecasts for marine safety applications).

  • => hold a GODAE/OOPC workshop on OSEs/OSSEs in fall 2007 to improve the collaboration and sharing of OSSEs and OSEs results between GODAE, OOPC, CLIVAR and other groups.


Workshop objectives

Workshop objectives

Review work done on OSEs and OSSEs over the past years

Identify robust and common features

Provide good examples of the contribution of observing system

Provide preliminary recommendations on the observing system design. What needs to be improved ?

Specific topics should include:

Low/high resolution altimetry

Argo

Tropical moorings

High resolution SSTs

New observing techniques (e.g. salinity, gliders)

Scatterometry

Prior to the workshop, specific impact studies should be defined and carried out by the different groups so that results can be compared and discussed at the workshop.

Outcomes of the workshop : a first list of recommendations for the global observing system, a work plan to prepare the GODAE recommendations and (mainly) to make a better case to for the global ocean observing system (final GODAE conference)


  • Login