Diapositive 1

1
Satellite Oceanic Observatory Atlas http//aoos.mp
l.ird.fr/ Part I Historical data
Dominique DAGORNE (1) - Hervé DEMARCQ (2) -
Laurent DRAPEAU (2) Institut de Recherche pour le
Développement IRD (1) US IMAGO-191,
Instrumentation, Moyens Analytiques ,
Observations en géophysique et Océanographie
Centre de Bretagne BP70 29280 Plouzané
France (2) UR ECO-UP 097 Structuration et
fonctionnement des écosystèmes d'upwelling
exploités analyses comparatives pour une
approche écosystémique des pêcheries
Centre de Recherche
Halieutique Méditerranéenne et Tropicale , 1
Avenue Jean Monnet, BP 171, 34203 Sète France
Introduction Satellites imagery provides
valuable synoptic views needed to study ecosystem
dynamics at regional and global scales. Long time
series of satellites products, available at high
temporal resolution as well as high spatial
resolution (for the latest sensors) , have
contributed to make remote sensing a key element
for monitoring and characterizing marine
ecosystem. Use of these products by end users
communities hasnt reached its full potential due
to accessibility issues. The Satellite Oceanic
Observatory Atlas was developed to structure,
process, archive, and distribute via an
interactive web site, valuable remote sensing
historical data sets of oceanic surface
parameters Sea Surface temperature, Ocean
color (Chorophylle), Wind and Altimetry. The
eastern boundary upwellings ecosystems (Benguela,
California, Canaries and Humboldt) are main
targeted areas of many IRD research teams
conducted projects comparative atlas, model
validations, climatologically trend, meso-scale
research (eddies, filament),etc .. , with studies
at regional and local areas and long term
duration.
Satellite Oceanic Observatory Atlas data sets
All the criterias are available for selection,
individually or combined, with no predefined
priorities, leading to an optimal determination
of the series to be displayed . Quicklook images
or data (binary) are identified by
Geophysical parameters (spatial resolution
and time span) Sea Surface temperature (SST)
Analyzed products Reynolds
optimal interpolation (1 deg / 1982 - present),
Thermal Infra-Red sensors
Pathfinder, MODIS (9 and 4km / 1985 (2002) -
present) Passive
micro-wave TMI (1/4 deg / 1998 - present
) Chlorophyll (CHL) standard products (case 1)
obtained from color processing Visible
channels measurements
SeaWIFS, MODIS (
9 and 4 km / 1998 (2002) present) Wind modulus
and direction by active Micro-Wave (radar)
scaterometer techniques.
ERS 1-2 (1 deg /
19922000) and QuickScat (½ deg / 2000 -
present) Sea Level Anomaly (SLA) and Surface
Height (SSH) from altimetry programs (1/3 deg
from 1992). Sources sensors and/or program
distribution Reynolds, Pathfinder (AVHRR),
Meteosat, Modis, Seawifs, Quickscat, Meteosat,
Aviso,. Temporal resolution 1 day, 7 days,
8 days, 1 month, and climatology Spatial
resolution 1 km, 4km, 9km, 25km,35km,50km,
1deg Geographical area of extraction
Currently 35 areas are being monitored at
regional ( Atlantic ocean, Atlantic Tropical,
Benguela, Canary, Humboldt,.. ) or local scale (
Marocco, South Benguela, Peru, Senegal, Freench
West Indies, . ) The Historical or Delayed
time data set encompasses remote sensing
products available from the beginning of
accessible data, regulary updated from several
providers ( NASA, NOAA, EUMETSAT, RSS,..). These
products are "composite" based on large period
(week, 8 days, month, climatology) and for use on
long term climatic retrospective analysis.

• The series displayer
• Whether for a full time series, a series within a
  restricted time range or multiple full or ranged
  series, the series visualiser is displayed
  allowing animations. The visualiser displays
  image of each selected series side by side,
  giving details about the selected coverage of the
  series (Metadata). A Download link allows the
  user to download the displayed image and data.
• - Simultaneous display of a single parameter on
  various areas of interest

• Three step images selection
• Access to specific remote sensing images is eased
  with intuitive cascading series of
  criteria/values selections. Lists displaying
  areas, parameters, satellites sources, temporal
  and spatial resolutions can be used independently
  or combined until there are no criterion left.
• Interactive areas of interest selection
• A global interactive map, provides the main
  navigation tools (zoom, pan, selection) which
  helps the determination of the areas of interest
  of end users.

Some application illustrations TRENDS 1985-2002
from SST  PathFinder V4  monthly , with time
series on some points for the 4 regional
upwelling areas.
Canary
Benguela

Humboldt
California