Arctic Sea Ice Summer Melt Feature Classification from Operation IceBridge High-Resolution Optical Imagery, July 2016 and July 2017 (NCEI Accession 0209246)

The Arctic Sea Ice Summer Melt Feature Classification product is derived from high-resolution Digital Mapping System (DMS) imagery acquired during low-altitude NASA Operation IceBridge airborne surveys over Arctic sea ice. DMS images were acquired in July, 2016 and 2017. For each image, meaningful geophysical parameters have been derived: melt pond fraction, sea ice concentration, and pond color fraction. Melt pond fraction is the percentage of the sea ice surface that is ponded. Sea ice concentration is the percentage of ocean covered by sea ice. Pond color fraction is the partitioning of dark, medium, and light color ponds as a percentage of total ponded area.

北极海冰夏季融化特征分类产品源自高分辨率数字制图系统（Digital Mapping System, DMS）影像，这些影像通过NASA“冰桥行动”（Operation IceBridge）在北极海冰上空开展的低空机载调查获取。DMS影像采集于2016年和2017年7月。针对每幅影像，已提取出具有科学意义的地球物理参数：融池占比（melt pond fraction）、海冰浓度（sea ice concentration）及融池颜色占比（pond color fraction）。融池占比指海冰表面被融池覆盖的百分比；海冰浓度指海洋被海冰覆盖的百分比；融池颜色占比则是将深色、中等色与浅色融池按占总融池面积的百分比进行划分的结果。