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ESA’s Operational Sentinel 3 Satellites: Optical Instruments

Helge Rebhan(1), Jens Nieke(1), Bernd Seitz(1), Constantin Mavrocordatos(1), Jürgen Stroede(1), Johannes Frerick(1) and Bruno Berruti(1)

(1) ESA-ESTEC, Postbox 299, 2200AG Noordwijk, Netherlands

Abstract

Sentinel 3 will continue the successful observations of MERIS and AATSR on Envisat to ensure data contingency for numerous applications in science and operational services. The first Sentinel-3 satellite is expected for launch in 2012 with a second satellite to be followed about 2 years later. This will guarantee an extensive period for dual operation with increased temporal sampling capability. The Ocean and Land Colour Instrument (OLCI) is based on the ENVISAT Medium Resolution Imaging Spectrometer MERIS. It fulfils ocean-colour, land-cover and vegetation objectives with a larger swath and additional spectral bands. The Sea and Land Surface Temperature radiometer (SLST) is based on ENVISATs Advanced Along Track Scanning Radiometer. Unlike AATSR, SLST has a double-scanning mechanism, yielding a wider swath and a large overlap with OLCI. This enables the continuation of the highly accurate sea surface temperature observations and provides extra information on vegetation state. In addition to the essential Sentinel-3 mission elements the conceptual designs of the major instruments and their basic performance parameters will be introduced. We will provide a description of expected radiance data products at Level 1 which includes a synergy product from both optical sensors. This shall ensure to continue the suite of geophysical products from Envisat and SPOT/Vegetation as well as to allow development of new innovative applications.

 

Workshop presentation

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry