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Microwave OI SST Validation Statistics |
We have performed extensive comparisons of our MW OI SST products to NCEP OI (Reynolds) SSTs. Following are two sets of statistics: one for collocations within the range of TMI data (±40°); another for global collocations (±90°).
TMI Data Latitudes: 40S – 40N |
Dates: 2002-Jun through 2004-Feb |
MW OI SST |
Bias (°C) |
STD (°C) |
# Collocations |
TMI |
0.12 |
0.59 |
198,622,601 |
AMSR-E |
-0.03 |
0.53 |
202,317,843 |
TMI + AMSR-E |
0.01 |
0.56 |
196,485,267 |
Global Latitudes: 90S – 90N |
Dates: 2002-Jun through 2004-Feb |
MW OI SST |
Bias (°C) |
STD (°C) |
# Collocations |
AMSR-E |
-0.02 |
0.64 |
313,865,230 |
TMI + AMSR-E |
0.01 |
0.65 |
319,671,057 |
Note that we expect to find differences, as these MW OI SST products accurately resolve real SST features that are smoothed out of the low resolution NCEP OI (Reynolds) SSTs. For example, we see a higher standard deviation when latitudes greater than 40 are included, likely due to the presence of more dynamic SST features at higher latitudes, such as the western boundary currents (Brazil/Malvinas, Atlantic Gulf Stream, Kuroshio/Oyashio) and the Antarctic circumpolar current.
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