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Validation of NASA Sea Surface Temperature Satellite Products Using Saildrone Data

Sea Surface Temperature (SST) is at the core of many processes in the oceans. Various remote sensing platforms have been used to obtain SST products of different scales, but their validation remains a topic of ongoing research. One promising platform is an uncrewed surface vehicle called Saildrone....

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Published in:Remote sensing (Basel, Switzerland) Switzerland), 2023-04, Vol.15 (9), p.2277
Main Authors: Koutantou, Kalliopi, Brunner, Philip, Vazquez-Cuervo, Jorge
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description Sea Surface Temperature (SST) is at the core of many processes in the oceans. Various remote sensing platforms have been used to obtain SST products of different scales, but their validation remains a topic of ongoing research. One promising platform is an uncrewed surface vehicle called Saildrone. We use the data from eight Saildrone deployments of the USA West Coast 2019 campaign to validate MODIS level-2 and Multi-scale Ultra-high Resolution (MUR) level-4 satellite SST products at 1 km spatial resolution and to assess the robustness of the quality levels of MODIS level-2 products over the California Coast. Pixel-based SST comparisons between Saildrone and the satellite products were performed, as well as thermal gradient comparisons computed both at the pixel-base level and using kriging interpolation. The results generally showed better accuracies for the MUR products. The characterization of the MODIS quality level proved to be valid in areas covered by bad-quality MODIS pixels but less valid in areas covered by lower-quality pixels. The latter implies possible errors in the MODIS quality level characterization and MUR interpolation processes. We have demonstrated the ability of the Saildrones to accurately validate near-shore satellite SST products and provide important information for the quality assessment of satellite products.
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subjects California Coast
Climate change
Coasts
Kriging interpolation
Meteorological satellites
MODIS
MUR
Oceans
Pixels
Precipitation
Quality assessment
Quality control
quality levels
Radiation
Radiometers
Remote sensing
Saildrone
Satellites
Sea surface temperature
Sensors
Skin
Spatial discrimination
Spatial resolution
SST
Surface vehicles
Temperature
Temperature gradients
title Validation of NASA Sea Surface Temperature Satellite Products Using Saildrone Data
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