Within the European Commission's Copernicus programme, the Sentinel‐3 Medium Resolution Imaging and Altimetry Mission is currently under development. One of the main instruments selected for the Sentinel‐3 mission is the Sea and Land Surface Temperature Radiometer (SLSTR) which is a high accuracy radiometer to provide Sea‐Surface Temperature (SST) data continuity respect to the previous Advanced Along‐Track Scanning Radiometer (AATSR) and Along‐Track Scanning Radiometer (ATSR) for climatology and new data for meteorology.

    The Sentinel‐3 mission plans to launch various satellites, starting with Sentinel‐3A in 2015 and the subsequent Sentinel‐3B to be launched at least 18 month later. Together with the planned Sentinel‐3 C and D satellites and a designed lifetime of 7.5‐years per satellite, a 20‐year period of continues observation is foreseen. Each SLSTR onboard the Sentinel‐3 satellites has an improved design with respect to the ENVISAT‐AATSR and ERS‐ATSRs predecessors through a large near nadir and oblique view swaths (1400 and 740 km) for sea and land surface temperature global coverage at 1 km spatial resolution with a daily revisit time (with two satellites), appropriate for climate and meteorology. Additional to the classical infrared (IR) channels, the visible and SWIR channels have a higher spatial resolution (500 m). Further, there are two additional channels included to monitor high temperature events, such as forest fires. The two swaths are obtained with two conical scans and telescopes combined optically at a common focus, representing the input of a cooled Focal Plane Assembly, where eleven channels are separated with dichroic and focalized on detectors with appropriate optical relays. IR and shortwave IR optics/detectors are cooled to 89 K by an active mechanical cryo‐cooler with vibrations compensation, while the VIS ones are maintained at a stable temperature near 265 K. This chapter describes the opto‐mechanical design and the expected electro‐optical performance and summarizes the calibration activities and briefly outlines typical products or retrieval functionalities of the different channels made available through Sentinel‐3 SLSTR processing chain. Further information in the frame of typical products and overall Sentinel‐3 mission description can be found in chapter 10 of this book.


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    Titel :

    Sea and Land Surface Temperature Radiometer on Sentinel‐3


    Beteiligte:
    Qian, Shen‐En (Herausgeber:in) / Coppo, Peter (Autor:in) / Smith, Dave (Autor:in) / Nieke, Jens (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2015-12-10


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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