Nanomaterials describe, in principle, materials of which a single unit is sized (in at least one dimension) between 1 to 1000 nanometres (10−9 meter) but usually is 1 to 100 nm (the usual definition of nanoscale).
Information from a dedicated calibration and validation site has proven invaluable in ensuring the accuracy of satellite altimetry measurements. However, more reliable in situ information can be obtained by an international network being developed within an EU-funded project.
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