Description and assessment of the OSTIA reanalysis. - Met Office

Regions In-situ AVHRR ATSR-2
Pathfinder
Global Ocean 0.055 (0.650) -0.045 (0.484) 0.012 (0.354)
Arctic Ocean 0.065 (0.875) 0.144 (0.604) 0.025 (0.483)
Baltic Sea 0.171 (1.053) 0.014 (0.519) 0.028 (0.578)
North West Shelf 0.083 (0.523) -0.047 (0.373) 0.018 (0.379)
IBI ROOS 0.067 (0.454) -0.111 (0.410) 0.013 (0.336)
Mediterranean Sea 0.037 (0.827) -0.013 (0.450) 0.022 (0.394)
Black Sea 0.149 (0.571) 0.027 (0.484) 0.050 (0.517)
North Atlantic 0.020 (0.731) -0.087 (0.507) 0.017 (0.394)
Tropical Atlantic 0.119 (0.619) -0.202 (0.544) 0.011 (0.328)
South Atlantic 0.075 (0.595) -0.032 (0.489) 0.009 (0.363)
North Pacific 0.064 (0.649) -0.060 (0.497) 0.010 (0.363)
Tropical Pacific 0.108 (0.492) -0.061 (0.487) 0.011 (0.324)
South Pacific 0.080 (0.482) -0.007 (0.446) 0.010 (0.324)
Indian Ocean 0.076 (0.587) -0.027 (0.486) 0.015 (0.341)
Southern Ocean 0.082 (0.514) 0.026 (0.451) 0.009 (0.373)
Actual NW Shelf 0.107 (0.594) -0.045 (0.373) 0.020 (0.391)
Table 4.3: Average regional observation minus background bias (and RMS) in K during ATSR-2
period for all observation types
worse bias and increased RMS than the global statistics. The AATSR data has had a positive effect
on the statistics for the AVHRR Pathfinder data throughout most of the ocean regions, although
this is not true in regions poorly sampled by the in-situ observation network. A slight decrease is
apparent in most regions in the AATSR statistics compared to those for the ATSR-2 observations.
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