Upper left panel, RGB composite image around the northern polar region composed from about 30 MODIS Level-1B data on June 18, 2000. MODIS ch.1 (0.645µm), ch.4 (0.555µm) and ch.3 (0.469µm) are assigned to Red, Green and Blue channels, respectively. Upper right panel, color-coded image of the cloud and surface classification flag generated using the GLI CTSK1 algorithm (cloud/clear and snow/sea-ice discriminators).

Snow over land cannot be seen over the continents except over the Greenland ice-sheet in this season. Almost all the areas within the Arctic Ocean are covered with snow over sea-ice.

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Earth Observation Research and application Center, Japan Aerospace Exploration Agency
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