A comparison of remote-sensing SST and in situ seawater temperature in near-shore habitats in the western Mediterranean Sea

摘要: Remote sensing of sea surface temperature (SST) is widely used in climate science because it provides a quasi-synoptic coverage the ocean. However, use these data for near-shore habitats hindered by proximity coast, therefore further investigation needed. We compared remote-sensing SST from MODIS sensor (aboard Aqua satellite) to seawater (ST) recorded situ with loggers at 5 locations western Mediterranean Sea. In ST were collected m depth over ~6 yr period and depths below 3 locations. evaluated suitability represent shallow subtidal relative different modes variability. reproduced seasonal variability high correlations (r > 0.98) biases (0.59 ± 0.03°C) only slightly higher than accuracy (0.50°C). also captured interannual no systematic biases. When intra-seasonal variability, showed limited (up 0.79°C) tendency overestimate (between 4 64%) both cold warm seasons. Finally, over-/underestimated most extreme unseasonably cold/warm events (by 1.51 -0.79°C, respectively). The observed differences between 2 methods can be explained particular hydrodynamics area methodological constraints. Overall, proved reliable proxy Sea, are thus considered suitable studies requiring reconstruction environments.