Surface circulation in the Nordic Seas from clustered drifters
I Koszalka, JH LaCasce, M Andersson, KA Orvik… - Deep Sea Research …, 2011 - Elsevier
We compare two methods for estimating mean velocities and diffusivities from surface drifter
observations, using data from the Nordic Seas. The first is the conventional method of
grouping data into geographical bins. The second relies on a “clustering” algorithm, and
groups velocity observations according to nearest-neighbor distance. Capturing the spatial
variability of the mean velocity requires using bins with a length scale of∼ 50km. However,
because many bins have few observations, the statistical significance varies substantially …
observations, using data from the Nordic Seas. The first is the conventional method of
grouping data into geographical bins. The second relies on a “clustering” algorithm, and
groups velocity observations according to nearest-neighbor distance. Capturing the spatial
variability of the mean velocity requires using bins with a length scale of∼ 50km. However,
because many bins have few observations, the statistical significance varies substantially …
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