New global ocean mapping reveals more precise seasonal mixing patterns
In short: Researchers developing a new 2° resolution global climatology found that using individual ocean profiles provides a much more accurate picture of mixed layer depth than previous methods. By applying specific temperature and density thresholds to individual data points, the study captured finer structures and more accurate seasonal timing in the upper ocean.
The study constructed a new global climatology by analyzing individual temperature and density profiles rather than relying on previously gridded data. This approach revealed that using averaged profiles can create a 25% shallow bias in depth estimates. However, the researchers noted that using oxygen data to estimate depth might introduce biases in areas with intense biological activity or strong upwelling.
Why it matters: More granular ocean data allows for a much more accurate understanding of how the upper ocean mixes seasonally.
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