Pr

1
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
DP/CMS/RD
Medspiration Villefranche Nov. 2006
2
L4 SST products in Mersea

• (GOS) Mediterranean analysis (daily,
  1/16horizontal 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
3
GOS analysis
4

(Met.no) High Latitude analysis
5
(M-F) Atlantic analysis
(Ifremer) Global analysis
6
Inputs available L2P
Datasets Producers AATSR Medspiration NAR1
7 (18) Medspiration SEVIRI 3h
0.1 Medspiration SEVIRI 1h 0.05 (exp.)ME
RSEA GOES-12 1h 0.05 (exp.)MERSEA GOES-12
3h MISST GOES-11 3h MISST AVHRR17_G Med
spiration MISST AVHRR17_L Medspiration MISST
AVHRR18_G MISST AVHRR18_L MISST MODIS
A MISST MODIS T MISST AMSRE Medspiration
MISST JAXA TMI Medspiration MISST
?
?
7
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)
8
Collated(Atlantic)
Composites of all L2Ps available over the
Atlantic between26/11/06 1200 UTC and 27/11/06
1200 UTC
9
CollatedAVHRR17_G(Global)
10
Super collated Atlantic
Composite of all corrected collated
filesavailable over the Atlantic for a given
day
11
Super collated Atlanticdata origin
12
(No Transcript)
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(No Transcript)
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The CMS IFREMER MERSEA chain

•  
•  L2P (X) L2P (AATSR)
• Native Collated Native Collated
• Correction
• Corrected collated
• Super collated
• Analysed field (L4)
•  

15
Daily differences to AATSR
Can we use the AATSR as a reference?
16
Using AATSR as a reference?1) We want to
correct for regional biases2) Compositing
differences over several days shows promising
results
17
Daily bias correctionanalysis of 20 daily
differences
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Daily bias correction confidence
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Is the correction efficient ?
20
Super collated data origin
GOES12
AVHRR18
TMI
AVHRR17
AATSR
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Super collated SST over the Gulf of Mexico
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Super collated bias correction
23
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

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Concluding remarks

• L2Ps are now widely used as THE SST products
• But

• L2Ps are sometimes not available in time
  (Ancillary data may be problematicNAAPS, NWP,)
• We need a Real Time L2P core

• L2Ps are sometimes not available at all

- The duplication of datasets between MISST and
MEDSPIRATION should stop
- The L2P flow must become fully operational
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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

26
METOP First SST products (30/11/06)
MAROC
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METOP First SST products (01/12/06)
ARGENTINE
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K.Caseys Climatology
ARGENTINE