Satellite validation study reveals high-accuracy sea surface temperature retrieval in the Northwest Pacific, indicating strong operational capacity for marine and weather monitoring.
Key Points
Retrieve high-resolution (250 m) sea surface temperature across the Northwest Pacific Ocean using thermal infrared observations from the FY-3E MERSI-LL instrument.
Applied an adaptive decomposition optimization model using the alternating direction method of multipliers to remove stripe noise from Level 1 radiance measurements.
Identified cloud-free scenes using a multi-threshold brightness temperature method and collocated satellite pixels with in situ observations within 1 hour and 0.0025°.
Derived sea surface temperatures using a nonlinear retrieval algorithm with quality flagging and validated outputs against in situ data and L3S-LEO gridded products.
Validation against in situ observations yielded a bias of 0 °C and a standard deviation of 0.59 °C for the highest-quality retrievals.
Comparison with multisensor L3S-LEO SST products demonstrated a bias of 0.14 °C and a standard deviation of 0.33 °C for best-quality data.