Climate Change

Shocking Images of "Sea Smoke" Captured Above Antarctica's Pine Island Glacier

Main image to the post Shocking Images of "Sea Smoke" Captured Above Antarctica's Pine Island Glacier

Recent images taken by a NASA satellite have revealed an extraordinary natural occurrence known as "sea smoke," which is visible above the Pine Island Glacier in Antarctica. This glacier is critical to understanding ice dynamics in the region as it plays a crucial role in the flow of ice from the West Antarctic Ice Sheet into the Amundsen Sea. The images were recorded by the US Geological Survey's Landsat 8 satellite, showcasing this atmospheric phenomenon on an unusually clear day.

The formation of sea smoke is a complex interaction of ice, water, and air, generated when katabatic winds sweep from central Antarctica towards the coast. These winds displace sea ice and water at the glacier's forefront, allowing warmer water to surface. When this warm water encounters the frigid air, it results in the condensation of small ice crystals that appear to rise, resembling smoke emanating from the ocean. According to Christopher Shuman, a NASA glaciologist, these images emphasize the significant impact of wind—particularly when it carries cold air that has been trapped in the interior for extended periods.

The Pine Island Glacier has been rapidly receding, raising concerns about its stability and the broader implications for sea level rise. The satellite observations also noted snow streams being blown upwards due to the same katabatic winds, especially apparent near the glacier's southern edge. Researchers are now focused on understanding how this blowing snow influences the glacier's surface mass balance, a critical factor in predicting future changes, albeit this research is complicated by the glacier's remote and harsh environment.

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May 21, 2023 | 05:09