The high resolution global sea surface temperature analysis
of MERSEA is produced at IFREMER/CERSAT . It provides a
daily gap-free map of the foundation sea surface temperature (e.g.
without diurnal cycle effect) at 10km resolution, using all available
infra-red and microwave spaceborne sensors. The ODYSSEA(Ocean Data analYsis System for merSEA)
processing chain developed to produce this dataset is based on a
careful selection and correction of available observations, using
adjustement to in situ and AATSR sensor observations, and an optimal
interpolation method to filll the gaps.
USING THE DATA
Interim management report
The ODYSSEA data are
produced and archived at Ifremer. They are available both on ftp and
through OpenDAP at the following url :
The data are in netcdf
format, complying to CF-1.0 convention and GHRSST format
specification. More details on this format can be found on GHRSST web
site or in the following document : GHRSST-PP-Product-User-Guide-v1.1.pdf
Information on ODYSSEA product processing are provided in the following report : MERSEA-WP02-IFR-STR-001-1A.doc
QUALITY MONITORING
Special attention was paid to the monitoring of the
overall product quality as well as to the monitoring of each sensor
used in the merging process. Plots and statistics are produced daily to
carry on this task and are available for consultation in the following
pages.
Daily monitoring of the single
sources of observation (GHRSST L2P products)
These pages provides, for each sensor used in the
ODYSSEA chain, statistics for the monitoring of observations used in
the analysis, both in terms of coverage, proximity to the analysis time
and bias.
Daily monitoring of multisensor products
| Global Interpolated
SST (L4) |
This page
provides quicklooks of the ODYSSEA as well as comparisons with other
existing similar products (OSTIA, Reynolds RTG) in terms of difference
but also gradient retrieval.. |
| Regional
zooms |
This page provides zooms over predefined areas
that can be browsed interactively (zoom/unzoom, color palette
adjustement, overlay) using the NAUSICAA application. It allows to
intercompare various analyses together or with the direct sensor
observations. |
| Multi-sensor
merged SST (L3) |
This page provides monitoring information on the
merging process (before optimal interpolation), such as origin (source
sensor) of the data in the multisensor merged map and their relative
proximity to the analysis time, as well as comparison with the final
analysis (after optimal interpolation). |
Long-term monitoring
