Baffin Bay is located between Greenland and several islands of the Canadian Arctic, providing a conduit for the downstream transport of ice and freshwater to the North Atlantic via Davis Strait. Using satellite observations from Sentinel-1, the RADARSAT Constellation Mission, and CryoSat-2, we estimated the sea ice export through Davis Strait and winter ice production in Baffin Bay from 2016 to 2022. The average annual ice export for this 6-year period was 981 ± 193 × 10³ km² for area 816 ± 130 km³ for volume, and 653 ± 130 km³ for solid freshwater, all of which are considerably higher than previously reported estimates. The average winter ice area production upstream of Davis Strait was 758 × 10³ km² and the volume production was 589 km³ indicating that more than 80% of the ice exported out of Baffin Bay was produced locally. Compared to Fram Strait, sea ice fluxes through Davis Strait represent ∼59% of the volume and ∼111% of the area.

中文翻译：

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Sentinel-1、RADARSAT 星座任务和 CryoSat-2 的巴芬湾冰出口和生产：2016-2022 年


巴芬湾位于格陵兰岛和加拿大北极洲的几个岛屿之间，为冰和淡水通过戴维斯海峡向下游输送到北大西洋提供了通道。利用 Sentinel-1、RADARSAT 星座任务和 CryoSat-2 的卫星观测，我们估计了 2016 年至 2022 年通过戴维斯海峡的海冰出口和巴芬湾的冬季冰生产。这 6 年期间的年平均冰出口量为 981 ± 193 × 10³ km²，面积为 816 ± 130 km³，固体淡水为 653 ± 130 km³，所有这些都大大高于以前报告的估计值。戴维斯海峡上游冬季冰的平均产量为 758 × 10³ km²，产量为 589 km³，这表明巴芬湾出口的冰中有 80% 以上是本地生产的。与弗拉姆海峡相比，通过戴维斯海峡的海冰通量约占体积的 59% 和 约占面积的 111%。