myocean2 first annual meeting – 16-17 april 2013 wp 18 multi year assessment myocean2 first annual...

MyOcean2 First Annual Meeting – 16-17 April 2013

WP 18Multi Year Assessment

MyOcean2 First Annual Meeting – Cork /16-17 April 2013

Work Package Main Objectives

For the TACs: to produce in a coordinated way with MFCs and distribute reprocessed data sets for data assimilation and CAL/VAL purposes

For the MFCs: to produce in a coordinated way a set of global and regional reanalyses for the physics (covering the past 20 years or more) and biogeochemistry using the data sets specially delivered by the TACs

For both TACs and MFCs: to implement assessment protocols for MyOcean2 products and to produce reports for downstream services (institution and scientific users)

The overall goal is to improve, harmonize and consolidate the work done in MyOcean concerning the production and assessment of global and regional re-analyses and reprocessing of data


Partnership

Multi-year assessmentWP 18

Coordination CMCCWP 18.1

Assessment and usefulnesswith respect to downstream appl.

WP 18.2 MERCATOR

Reprocessing of satellite and in situ input Data

WP 18.3 CLS

Reanalysis Production

WP 18.4 MERCATOR

18.2.1 CAL/VAL DefinitionMERCATOR, CLS, NERSC

18.2.2 Reanalysis AssessmentMERCATOR + all partners

18.2.3 SPC products INGV + many others…

18.3.1 S&T coordination CLS

18.3.2 Temperature – Salinity IFREMER

18.3.3 Sea Level CLS

18.3.4 SST and Arctic Sea IceIFREMER, DMI, CNR

18.3.5 Ocean Color CNR

18.3.6 Assessment of REP data set before assimilation CLS

18.4.1 S&T coordinationCMCC 18.4.2 Global Ocean ReanalysisMERCATOR

18.4.3 Regional Physical and Biogeochemical Reanalysis INGV

18.4.4 Product documentation and synthesis material ALL


Partnership

1) RAN: CMCC, MERCATOR, UREAD, ECMWF, CNRS

REP: IFREMER,CLS, CNRS,METNO

2) RAN: NERSC REP: IFREMER, IMR

3) RAN: DMI, SMHI REP: DMI, BSH, PML

4) RAN: NERC, METOFFICE, IMR REP: BSH, PML

5) RAN: MERCATOR REP: IFREMER6) RAN: INGV REP: OGS,CNR7) RAN: MHI-NASU, IOBAS, INCDM REP: OGS,CNR

22 partners


Main Subjects in WP18

•Cal/Val activities (18.2.1-18.2.2)

•Major Accounts and Specific Core Products (18.2.3)

•REPs (18.3)

•RANs (18.4)


Achievements wrt workplan: (CAL/VAL activities)

A WG on Cal/Val definition for reanalyses was set up (MERCATOR, NERSC, CMCC, OGS, SMHI, ECMWF, U-READING, INGV)

Objective:DEFINE / IMPROVE THE REANALYSES VALIDATION METHOD harmonize the validation methods used for the reanalysis assessment

more homogeneity in the QuIDs establish a list of reference data sets used for validation if possible, follow the recommendations from WP17 consider high frequency fields in the validation of reanalyses

A document specifying the reanalysis Cal/Val has been produced and sent to WP18 partners. The document will be discussed and validated during WP18 special session.

No common validation approach for the reprocessed observations due to the specificities of each TAC (observations are very different). More important to focus on the link with MFC.


Achievements wrt workplan

Validation done with products from SL-TAC

WP18.2: Cal/Val production:

MyOcean global ocean reanalyses at ICR4 conference (Washington DC): see www.icr4.org:


http://www.icr4.org/



MyOcean global ocean reanalyses at ICR4 conference:

Time-mean Net Heat Flux 1993-2009 (Downwards)

Exp GLO 60-60CGLORS -5.9 -1.4GLORYS 3.5 6.3U-READ. 4.1 7.0LEGI 0.6 3.2ERA-INT 8.6 10.8MyO-ENS 0.6 3.8 OAFlux - 29.1


Mercator Newsletter highlighting the skill of MyOcean eddy-permitting global ocean reanalyses:

N. Ferry, B. Barnier, G. Garric, K. Haines , S. Masina , L. Parent, A. Storto , M. Valdivieso, S. Guinehut and S. Mulet, 2012: NEMO: the modeling engine of global ocean reanalyses, , Mercator Ocean Quaterly Newsletter #46, Special Issue NEMO-MyOcean, November 2012, p60-66


WP18.2: Cal/Val production:Mercator Newsletter highlighting the skill of MyOcean eddy-permitting global ocean reanalyses:

Atlantic Merid. Overturning Circulation at 26,6°N



WP18.2: Cal/Val production:Mercator Newsletter highlighting the skill of MyOcean eddy-permitting global ocean reanalyses:

Correlation with RAPID data

Full signal Interannual anomaly (i.e. seasonal cycle removed)

ENSEMBLE MEAN with 4 members (i.e. 1 member removed)

GLORYS2V1 0.73 0.66 0.69CGLORS 0.47 0.43 0.68UR025.4 0.39 0.50 0.65MJM95 0.77 0.69 0.68ARMOR3D 0.47 0.39 0.72ENSEMBLE MEAN 0.75 0.71 -

Atlantic Merid. Overturning Circulation ANOMALY at 26,6°N

Each member provides positive information to the ensemble-mean


Achievements in Production Centres

R&D activities: data assimilation of sea ice concentration (MERCATOR OCEAN). Will be part of next global ocean reanalysis release

G2V1 - CERSATG2V3 – CERSAT

No SEA ICE conc. ASSIM WITH SEA ICE conc. ASSIM

March 1998

G2V1 - CERSAT G2V3 – CERSAT

Sept. 1998


Achievements in Production Centres

Mean 2009 SSS

After 20yrs simulation : Fresh bias largely

corrected Still fresh in Northern

Atlantic Too salty in 20-30°lat

band.

ERAI ERAI/P corrected ARMOR3D (OBS)

ERAI/P corrected - ARMORERAI - ARMOR

R&D activities: development of ERA-Interim precipitation corrections

NWP reanalyses exhibit large biases in precipitations. Precipitation correction based on GPCP observations to correct ERAI

precipitations G. Garric, Mercator


SEPTEMBER ARCTIC SEA-ICE EXTENTOBS NO ICEDYN ICEDYN

BLACK: Old set of background-error CovariancesRED: New Set

The use of ice dynamics improves the patterns of sea-ice extension, especially for the yearly minima, and the near-surface temperature in polar areas

Achievements in Production CentresR&D activities: development of a new set of background-error covariances

(correction of T drift due to vertical instabilities) Implementation of ice dynamics

A. Storto, CMCC


First period summary and next steps

SUCCESSES of the FIRST PERIOD:

- Validation definition document almost ready for the reanalyses- Global Ocean reanalyses production for V3.1 is underway- The QuID will benefit from strong synergies between the partners

(i.e. show the added value of the ensemble)

EVOLUTIONS FOR THE SECOND PERIOD (Global Ocean RANs):

- V3.1 release : production and validation is expected to be finished by September. Service opening at the end of 2013.

- Preparation of global ocean simulations of the biogeochemistry forced by reanalysed ocean physics.


Achievements wrt workplan: (Major Accounts and SPCs)


WP18.2.3:

SPC draft factsheets have been produced (on Alfresco) based on the activitiy done by MyOcean and ETC-ICM for the following SPC:

Arctic Sea Ice Indicator Mean Sea Level Trend Indicator Global mean heat content

SPC product description to be produced: Today's sea surface temperature Global Ocean, Black Sea, Mediterranean Sea seasonal maps

DIFFICULTY Consolidate the URD and the involvment of Regional

Conventions and ICES

Need to be finalized and Updated at each new production


Arctic Sea Ice Indicator

– Produced at the Norwegian and Danish Meteorological Institutes for data produced by the EUMETSAT OSI SAF (http://osisaf.met.no) and the CryoClim (http://www.cryoclim.net) project, delivered through MyOcean

– EEA uses it as Indicator and included it in the SOER 2010 and Climate change report 2012


Mean Sea Level Trend Indicator

– Produced by MyOcean Sea Level TAC (CLS) as SPC product

– EEA uses it as Indicator and included into Climate change report 2008, State of Environment Report 2010 and Climate Change report 2012

In Situ TAC Climate Change Indicator

Time series of global mean heat content variability calculated from ocean temperature measurements (based on the Argo array) in the 10-1500m depth layer. The average global warming rate accounts for 0.52±0.1 Wm-2 during the years 2005-2011. The error bars show the uncertainties of the global mean heat content estimation.

– Produced by MyOcean in situ TAC (IFREMER) as SPC product

– EEA uses it as Indicator

MyOcean2 First Annual Meeting – 17-18 April 2013MyOcean2 First Annual Meeting – 16-17 April 2013

Products on EOE

• Global Ocean model Standard product accessed through WMS• Seasonal maps for the Global Ocean, Med and Black Sea (SPC)• By EEA webgis: GO and Mediterranean SST forecast products

www.eyeonearth.org


http://www.eyeonearth.org/

• MSFD:– Annual and seasonal mean of currents, salinity, temperature– Bottom temperature – Depth of the mixed layer, currents at the base of the mixed layer– Heat content, bottom & surface T– Nutrients and chl-a annual and seasonal means

• Climate:– Integrated heat content (mixed layer and thermocline rather than the 20 deg isotherm) – Ensemble products from reanalysis– Provide reanalysis with the estimation of uncertanties– Synthetic Index of multi-decadal variability / thermohaline circulation – Transport at relevant transects

• Fishery:– Bottom temperature– Annual mean of Temperature, salinity, curretns– Long time series reanalysis– Transport at relevant straits

Examples of User requirements (Copenhagen User workshop and CUG)

To be further

analysed with Users



SUCCESS: • SPC have been produced and disseminated to EEA• SPC are entering the MyOcean catalogue in V4 (TARGET products)• EEA is disseminating the MyOcean products in the framework of EIONET

national representatives and on EOE• The internal communication among the different components of MyOcean

has been improved

NEXT STEPS:• Update the MyO and EEA SLA with WP2• Define the new SLA for the new users with WP2• Finalize the SPC product descriptions (V1 at T18 and V2 and T30)• Consolidate the user requirements and their involvment• Start the implementation of new SPC and continue the regular

production/update of SPC• Increase the usage of regional products (i.e. Ocean Color) and long time

series products (i.e. reanalyses)


Achievements wrt workplan 18.3: (REPs)

OBJECTIVES:

Convert satellite and in situ observations into data products that:

support the MFCs with data required for assimilation and validation provide useful observational data products to users improve coordination with upstream components and MFC focus on characterization of the REP products quality

DIFFICULTIES and CHALLENGES:

Phasing with model reanalysis (RANs) still difficult to organise in the frame of a 2,5-3 years project - need to accept that RAN will use the REP Version n-1

Coordination with observational agencies (space, in-situ) (Difficult to phase with MyOean - need to accept to use version n-1)

Coordination with other (independent) initiatives

For all cases , need to work on a proper way to keep information on producers and to manage users on both sides. On going work at the Exec/Board level


WP 18.3: Product status


• First year of MyOcean 2 dedicated to:

- Work on algorithms improvement detailled in each individual TAC presentation

- Complete time series generated within Myocean1 project- Consist in providing products to replace the NRT products in order to

have a better accuracy (3 months for SLA and 5 days for OC)

- Generate or update time series- Consist in performing a reprocessing for the whole period with common

standards

Reprocessed (Myocean 1) DT NRT(RT)

198? 20xx 201xx

Reprocessed (Myocean 2)MyOcean2 First Annual Meeting – 16-17 April 2013

• Version 3: T&S historical data setCORA V3.4 delivered for V3. Upgrade of MyOcean CORA3.3 product to include the year 2011 plus ICES CTD (1990-2011). Scientifically validated the same way as CORA3.3

In-Situ

V3 1991 V4

Regional V3: New products NRT MyOcean Data + SeaDataNet + Roos providers : Duplicates removed + Basic QC. It is presently a demonstration product due to delay from SeaDataNet data provision

• Version 4: Regional products Fully validated as CORA3.4CORA4.0 : will include Regional product and cover 1990-2012


Version 3: No change for V3 was planned. REP OCTAC available since V2 are Chlorophyll for MED, BS, GLO & EUR, and Optics for GLO & EUR

BUT OC TAC R&D activity clearly showed that the MED and Global algorithms are not suitable for the Black Sea.

CNR after evalution of BS_CHL REP against in situ observations decided to produce a new version of the BS_CHL_L3_REP by re-processing SeaWiFS data time series with a Black Sea chlorophyll regional algorithm (see OCTAC presentation). This new version of the BS_CHL_L3_REP will be available since V3.

Ocean Colour

Reprocessed using Black Seas regional Algorithm from Kopelevich et al. (2004)


Version 4: New Version of:Med + BS, ATL products ready for V4 . The OCTAC regional processing chains will use Level 2 OC-CCI data as input and regional algorithms for chlorophyll retrieval ATL Products will cover also the Baltic Sea

-> All the MyOcean Regions will be covered by new OC CHL REP GLO REP will not produced by OCTAC: covered by OC-CCI, possibility to be re- distributed by MYO has been confirmed by PML after discussing with ESA ready for V4 at least

Ocean Colour

NOTE: New OC regional and global REP will be multi-sensor re-processed OC data time series while the present version of the re-processed products are based only on SeaWiFS time series


Version 3 No update for V3, but completed every 3 months by Delayed Time products (better products than the NRT ones but consistency with REP not ensured)

Different kinds of improvement have been performed this year: (see detail in SL TAC talk) - change in the reference period 1993-1999- 1993-2012 20 years !

- new standards (orbits, …)

- improve methodology (mapping)

Version 4:REP will be delivered for V4: GLO, MED, BS work mainly performed in the frame of SALP/DUACS activities 20 years time series 1993-2012 (60 years cumulated)

Sea Level

cm

Impact of the change to be managed with MFCs

Global Ocean Syntheses based on TAC products

Version 3: Cover 1993-2010 period, ARMOR3D 3D T,S,U,V fields)

Version 4: New products containing methodology improvement and use new TAC products ( MDT with GOCE data, MyOcean OSTIA SST )


NEW OLD

DEP

THD

EPTH

Temperature

Zonal velocity

More energy and small scales , less barotropic

REP products status at V3.0 versus MyOcean1

TAC Ocean Colour Sea Level SST Sea Ice Wind In-Situ 3D Obs-Based(ARMOR3D)

GLOBAL 1997-2010 1992- on going

1985-2007 (OSTIA) 1979-2009 2007-2012 1991-2011

(CORA V3.4) 1993-2010

ARCTIC 1997-2010 1999- on going

X 1991-2011 X

BALTIC 1997-2010 X 1991-2011 X

NWS 1997-2010 X 1991-2011 X

IBI 1997-2010 X 1991-2011 X

MED 1997-2010 1992-on going X 1991-2011 X

BS 1997-2010 1992- on going X 1991-2011 X

Red: MyO1 Update(time series completed)

Green: New Product (Myo2) Black: no change vs MyO1


REP products status at V4 versus V3.0

Red: Update of V3.0 Green: New Product Black: no change vs V3.0

TAC Ocean Colour Sea Level SST Sea Ice Wind In-Situ 3D Obs-Based(ARMOR3D)

GLOBAL 1997-2010(OC CCI TBC) 1992- 2012 1991-2012

(ODYSSEA)1979-on

going (CDOP2)

2007-2012 1991-2012(CORA V4.0) 1993-on going

ARCTIC 1997-2010 1990- on going X 1991-2011 X

BALTIC 1997-2010 1985-2011 X 1991-2011 X

NWS 1997-201x X 1991-2011 X

IBI 1997-201x X 1991-2011 X

MED 1997-201x 1992- 2012 X 1991-2011 X

BS 1997-201x 1992- 2012 X 1991-2011 X


Achievements wrt workplan WP18.4: (Regional RANs)

Work on improvements of models (e.g.,tidal forcing, turbulence parameterization) and surface forcing

Work on developing and improving DA systems (e.g., error covariances, correlation lenght scales, bias correction)

Setting up most of the systems to start RAN production Observations inventory and processing and choice of the boundary

conditions Development of new validation tools Coupling between physical and biogeochemical models

DIFFICULTIES and CHALLENGES: Choice of initial conditions and boundary forcing Ambitious runs due to large CPU costs Small hardware failures, big consequences Coordinated effort for validation Lack of hydrographic data after year of 1994 for the Black Sea Validation activities suffer for the lack of available biogeochemical

data

ACHIEVEMENTS:


Arctic Sea PHYS ReanalysisL. Bertino, F. Counillon, P. Sakov, E. Simon, A. Samuelsen NERSC

Stable slightly decreasing errors

Various altimeter constellations

Hint of seasonal bias<5cm

Sea level errors in Nordic Seas

V.3 March 2013: 1991-2010 HYCOM 12km; Deterministic EnKF (100 members); assimilates SLA SST T/S profiles from MyO2, ice concentration and drift (CERSAT-Ifremer) ARCTIC_REANALYSIS_PHYS_002_003 AVAILABLE in NetCDF and transferred to ARC-MFC diffusion unit! Same sys used for ARC real-time forecasting with various observing networks 1991-2010 reassuring proof of stability for operations


Arctic Sea BIO ReanalysisL. Bertino, F. Counillon, P. Sakov, E. Simon, A. Samuelsen NERSC

V3.0 March 2013: 2008-2010 HYCOM+Norwecom 25km In-line phys-bio coupling ; EnKF with anamorphosis stable on long runs; it assimilates SLA, Ice conc from MyO2; Reynolds SST (National Climatic Data Center), Chlorophyll (GlobColour) ARCTIC_REANALYSIS_BIO_002_005 Validation data from in-situ TAC, ARC AVAILABLE in NetCDF and transferred to ARC-MFC diffusion unitJoint physical-bio data assimilation possible in view of future real-time system

Validation agaist Surface Chl and nitrate at Station M (Norwegian Sea) in 2008


Baltic ReanalysisAxell Lars (SMHI) Vibeke Huess (DMI)

Boundary conditions: • S/T profiles from climatology or from global RAN (later) • Sea ice: no ice • Sea levels: 2 storm surge model will be tested shortlyData assimilation:Ensemble 3D-Var Multivariate (many variables affected simultaneously) (Backup:Ol)Observations in DA: Ice, T/S, SST

Ice concentration Level ice thickness Sea surface temperature Sea surface salinity

Multivariate analysis increments

REA Time period: 1989-present (same as Euro4M)Model: NEMO (”BaltiX” setup;) 2nm resolution 56z* coord, meaning all vertical coordinates move with the sea surface ongoing evaluationIce model: LIM3 not evaluated yetMeteorological forcing: Met. Rean from Euro4M project, 22km res

Main results – Example of validation of free-run

AMM7mean error -0.09°CRMS error 1.12°CShelf only (< 200m)mean error 0.16°CRMS error 0.74°C

SST validation AMM7-AVHRR

(1985-2004)

NWS PHYS ReanalysisUKMO and NOC-L

Data Assimilation System converted to the 3D-Var NEMOVAR system

Begin production in mid-2013

NWS PHYS ReanalysisTrond Kristiansen, Jon Albretsen, Bjørn Ådlandsvik, Henning Wehde (IMR)

Model: Regional Ocean Modeling System (ROMS) DA method: Incremental Strong Constraint 4DVar Analysis (IS4DVAR)Assimilated data: SST based on the Pathfinder 5.0 satellite data (4km resolution,7 days)The goal is to produce a re-analysis for the period 1985-2010


•Model domain Model domain 8x8 km grid (252x202x35) • 35 vertical levels (sigma coordinates) •ERA-INTERIM atmospheric forcing •SODA ocean boundary forcing (to be replaced with Mercator Global RAN) •OTIS Regional Tidal Solutions Atlantic Ocean 1/12° resolution

IBI ReanalysisGuillaume Reffray, Mercator Océan

ASSIMILATION

August NovemberModel IBI12 (monthly mean: 2002-2003 ) vs Levitus 2009 - Zonal section of Salinity at 40°N

Model (color) vs Levitus (Contour)


Mediterranean water is better positioned (thanks to the biases correction method)

Mediterranean PHYS ReanalysisM.Tonani, A.Grandi, S. Simoncelli, (INGV)

Product Quality MEDSEA_REANALYSIS_PHYS_006_004 1999-2011

Weekly averaged SST RMS error and bias:Analyses compared I) with satellite reprocessed data till 10/07/2008; II)with SST Delay Time data from 11/07/2008 till 31/08/2010; III) with Real Time SST data for the rest of the period

Weekly averaged SLA RMS of satellite-model misfit (cm)


Mediterranean BIO ReanalysisS.Salon, G. Bolzon, G. Cossarini, A.Teruzzi (OGS)

Main results 3D-Var scheme upgrade & test

Biogeochemical climatology of Mediterannean sub-regions

Comparison of control run (CR) and assimilation run (AR) versus satellite obs for the Levantine sub-region

Annunal averaged + STD profiles of chlorophyll and nitrate for the Levantine sub-regionClimatology has been obtained from a series of recent datasets (period 1990-2010) CHLOROPHYLL NITRATE


Black Sea PHYS ReanalysisGennady Korotaev, MHI

PHYS REA from 1985 till presentModel: MHI model of the Black Sea circulation with 38 z-levels and 5km res (238x132 grid); Data will be assimilated: T/S from hydrographic surveys, Argo profiling floats, SLA and SST;Current status: • major problem between 1994 and 2002, T and S measurements are almost absent• careful tuning of the Black Sea circulation model• analysis of available atmospheric forcing during ‘90s • a procedure to joint altimetry and profiling float data assimilation is developed and it is

under testing now

Monthly-averaged total surface heat flux for February, July and December (from left to right). Upper row – ERA40, lower – MM5.


First Period Summary and Next Steps

V3.0 PHYS V4 PHYS V3.0 BIO V4 BIO

GLOBALMERCATOR 1993-2009UREAD/ECMWF 1993-2009 CMCC CGLORS 1993-2009LEGI 1993-2009 REF SIMU

MERCATOR 1993-2012UREAD/ECMWF 1993-2012CMCC CGLORS 1993-2012 LEGI 1993-2012 REF SIMU

MERCATOR 1992-2012CMCC 1992-2012

ARCTIC NERSC 1991-2010 NERSC 2008-2010

BALTIC SHMI and DMI 1990-2009 (2 RANs)

SHMI/DMI 1992-2012

SHMI/DMI 1992-2012

NWSUKMO/NOC 1960-2004

(no DA)IMR 1985-2009 (no DA)

UKMO/NOC 1985-2012

IMR 1985-2012

UKMO/NOC 1960-2004 (no DA)

IMR 1985-2012 (no DA)IMR 1985-2012

IBI MERCATOR 2002-2012

MERCATOR 2002-2012

MEDINGV 1999-2011(daily frequency) INGV 1985-2012 OGS 2001-2010 (no DA) OGS 2001-2010

BS MHI 1971-2001 MHI 1985-2012 MHI 1985-2012

Black: MyO1 Red: MyO1 Update Green: New Product (MyO2)


FIRST PERIOD SUMMARY:• Team formation and improved links among MFCc and TACs• Cal/Val protocol for the RANs • Some new production• Calibration of physical models and data assimilation scheme• Coupling between physical and biogeochemical models • Make sure that each MFC and TAC will produce RANs and REPs (and

QUID) and reinforce dependency on internal MyOcean products• Establish the interaction with parallel initiatives (e.g. CCI and

Seadatanet)• SCPs on the catalogue from V4• Reinforced interaction with EEA

NEXT STEPS:• New productions• Coordinated validation of global RANs• Improved validation of the regional RANs• Consolidate the interactions with Users• Synthesis reports on the State of the Oceans for broad dissemination


First period summary: success

S

Reanalysis products of the Mediterranean Sea (5th position) and of the Global Ocean

(6thposition) show that past products or long time series are also of interest for users.

Source: MyOcean2 Service Validation Report January-December 2012

5 6

Thanks to all WP18

partners


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