Photos: Floating computers keep an eye on the oceans

Part of a programme to improve the understanding of the world's oceans

An Argo float is deployed from a Canadian coast guard vessel southeast of Halifax, Nova Scotia in October this year.

The floats drift freely in the ocean at various depths measuring temperature, sailinity and speed of current near the surface. They also measure temperature which is critical in measuring sea level rise.

Photo credit: UCSD

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