Use of L2P data in the MERSEA analyses WP2.2 partners: H. Heiberg and S. Eastwood (Met.no),

DP/CMS/R&D Medspiration Villefranche Nov. 2006

Use of L2P data in the MERSEA analyses

WP2.2 partners: H. Heiberg and S. Eastwood (Met.no),

L.Santoleri(CNR), E. Autret and J.-F. Piolle (Ifremer),

P. Le Borgne, F. Orain, A. Marsouin, H. Roquet (MF/CMS)A.Coat, Y.Guichoux (Actimar)

– Mersea Analyses (L4)

–The CMS/IfremerMERSEA chain

– Operational bias correction

– Concluding remarks


- Future plans


L4 SST products in Mersea

– (GOS) Mediterranean analysis (daily, 1/16°horizontal resolution)

– (Met.no) High Latitude analysis (daily, 0.02° horizontal resolution)

– (M-F/CMS) Atlantic analysis (daily, 0.05° horizontal resolution)

– (IFREMER) Global analysis (daily, 0.1° horizontal resolution, replacing M-F/CMS global analysis)

Present status: operational or experimental routine production


GOS analysis


(Met.no) High Latitude analysis


(M-F) Atlantic analysis(Ifremer) Global analysis


Datasets Producers

AATSR MedspirationNAR17 (18) MedspirationSEVIRI 3h 0.1° MedspirationSEVIRI 1h 0.05° (exp.)MERSEAGOES-12 1h 0.05° (exp.)MERSEAGOES-12 3h MISSTGOES-11 3h MISSTAVHRR17_G Medspiration MISSTAVHRR17_L Medspiration MISST AVHRR18_G MISSTAVHRR18_L MISSTMODIS A MISSTMODIS T MISSTAMSRE Medspiration MISST JAXATMI Medspiration MISST

Inputs: available L2P

?

?


The CMS IFREMER MERSEA chain

L2P (X) L2P (AATSR)

Native Collated Native Collated (L3) (composite of all available L2Ps)

Correction

Corrected collated (L3C)

Super collated

Analysed field (L4)

L2P(Y)


Collated(Atlantic)

Composites of all L2Ps available over the Atlantic

between26/11/06 1200 UTC and

27/11/06 1200 UTC


CollatedAVHRR17_G

(Global)


Super collated Atlantic

Composite of

all corrected collated files

available over the

Atlantic for a

given day


Super collated Atlantic:

data origin


The CMS IFREMER MERSEA chain

L2P (X) L2P (AATSR)

Native Collated Native Collated

Correction

Corrected collated

Super collated

Analysed field (L4)


Daily differences to AATSR

Can we use the AATSR as a reference?


Using AATSR as a reference?

1) We want to correct for regional biases2) Compositing differences over several days shows promising results


Daily bias correctionanalysis of 20 daily differences


Daily bias correction confidence


Is the correction efficient ?


Super collated data origin

AATSR

AVHRR17

GOES12

AVHRR18

TMI


Super collated SST over the Gulf of Mexico


Super collated bias correction


Future work (at CMS)- Inputs:

Inclusion of MODIS, METOP

- Method:

Improvement of the diurnal warming filtering

Correction method: implementation of control statistics

- Outputs:

Operational delivery of L4, supercollated, collated products


Concluding remarks

- L2Ps are sometimes not available in time (Ancillary data may be problematic:NAAPS, NWP,…):

We need a Real Time L2P core

- The L2P flow must become fully operational

- The duplication of datasets between MISST and MEDSPIRATION should stop

- L2Ps are sometimes not available at all

- L2Ps are now widely used as THE SST products

- But:


Future plans

- EUMETSAT L2Ps (OSI SAF CDOP)•METOP•New Geostationary satellite processing lines •NPP/NPOESS (regional)•Sentinel 3 (?)

-From Mersea to Marine Core Services (TAC)(what should it be?)

•European GDAC•Validation responsibilities•Maintaining a competence in SST product merging(collated data production?)•Global and regional L4 production


METOP: First SST products (30/11/06)

MAROC


ARGENTINE

METOP: First SST products (01/12/06)


K.Casey’s Climatology

ARGENTINE

Use of L2P data in the MERSEA analyses WP2.2 partners: H. Heiberg and S. Eastwood (Met.no),

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