The Amundsen Sea Low (ASL) is a distinctive feature of the Southern Hemisphere high latitude atmospheric circulation, regulating regional Antarctic climate, meridional heat transport, ocean circulation, and sea‐ice in the Amundsen‐Bellingshausen Seas. Most previous research on the ASL has focused on its variability with only a few studies attempting to understand why the climatological ASL exists. These studies have proposed different hypotheses to explain the presence of the ASL, however, a clear understanding of the mechanisms responsible for the generation of the ASL remains uncertain. Here we use an atmospheric general circulation model to show that the ASL is a consequence of the interaction between Antarctic topography and the westerly wind jet, with negligible influence from low‐latitude teleconnections. A nonrotating fluid flow simulation further suggests that the ASL can be explained by flow separation resulting from the interaction of westerly winds with the topography of Antarctica.

中文翻译：

---

南极地形对阿蒙森海低的产生

阿蒙森海底（ASL）是南半球高纬度大气环流的一个显着特征，它调节着南极气候，子午热传输，海洋环流和阿蒙森-比林斯豪森海中的海冰。以前有关ASL的大多数研究都集中在其可变性上，只有少数研究试图了解为什么存在气候ASL。这些研究提出了不同的假设来解释ASL的存在，但是，对于导致ASL产生的机制的清楚理解仍然不确定。在这里，我们使用大气总环流模型显示ASL是南极地形与西风气流相互作用的结果，而低纬度遥距连接的影响可忽略不计。