Sea Ice Visual Observation (Ice watch) data on the Northwest Passage in 2013

This data set includes the observed ice data (ice concentration, ice thickness, etc.) in the Northwest Passage in July, 2013.本数据集涵盖2013年7月西北航道（Northwest Passage）的观测海冰数据，包含海冰密集度（ice concentration）、海冰厚度（ice thickness）等观测指标。