Climate on Ice: Ocean-Ice Dynamics

Science Matters

Sea ice is not simple. Some Background is in order.

When white men started to explore the north of America, they first encountered the Crees. Hudson Bay posts were established to trade goods for pelts, especially the beavers used for making those tall hats worn by British ceremonial guards.

The Crees told the whites that further on toward the Arctic Circle there were others they called “eskimos”. The Cree word means “eaters of raw meat” and it is derogatory. The Inuit (as they call themselves) were found to have dozens of words for snow, a necessary vocabulary for surviving in the Arctic world.

A recent lexicon of sea ice terminology in Nunavik (Appendix A of the collective work Siku: Knowing our Ice, 2008) comprises no fewer than 93 different words. These include general appellations such as siku, but also terms as specialized as qautsaulittuq, ice that breaks after its strength…

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Invisible Indigo – Vaporised Violet


Invisible Indigo - Vaporised Violet

The Wikipedia Wizards are working wonders with human colour perception.

According to the Carl Zeiss web site the visible spectrum “covers the wavelength spectrum between 380 nm and 780 nm.”

The visible area is the range of electromagnetic radiation that is visible to the human eye.

It covers the wavelength spectrum between 380 nm and 780 nm.

Zeiss – Spectrometer Modules For the UV to the NIR wavelength range

Back in 2004 the Wikipedia Wizards agreed with Carl Zeiss although they added the caveat that “400 nm to 700 nm” was “more common”.

The optical spectrum (visible light or visible spectrum) is the portion of the electromagnetic spectrum that is visible to the human eye.

The optical spectrum is a composite, or mixture, of the various colors.

There are no exact bounds to the optical spectrum ; a light-adapted eye typically has a maximum sensitivity of ~555 nm…

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