From the dataset abstract

Canada’s SCISAT is studying the complex chemical processes that affect the distribution of ozone in the upper atmosphere, especially over the Artic. From its orbit 650 kilometres above the Earth, its instruments use the light from sunrises and sunsets each day to identify more than 60 gases and particles. This successful mission represents a partnership involving universities, industry, and government. Explore this data using CSA's SCISAT micro application, available here:

Source: Atmospheric Chemistry Experiment (ACE) on SCISAT

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