The coast of Terra Nova Bay (TNB) is known as one of the intense katabatic wind confluence zones in Antarctica. Strong westerly winds with topography-specific foehn effects (foehn-like winds, FLWs) could have influenced surface temperatures in this area downwind of the Transantarctic Mountains, yet their impact remains unstudied. Jang Bogo Station (JBS) in TNB has weak winds year-round, with occasional strong winds causing significant winter temperature increases. This study aims to investigate the FLWs and their recent variability in occurrence at JBS in terms of surface temperature variability. During the strong wind events, the surface warms due to foehn effects such as adiabatic heating and vertical mixing. FLWs occur approximately 16% (10%) of the time in winter (annually). FLWs are caused by cyclones in the eastern Ross Sea. Meteorological records for 2015–2022 revealed an increased FLW frequency, particularly in winter, which has increased temperatures in recent years.

中文翻译：

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东南极洲Terra Nova Bay张保戈站近地表温度受类似焚风的影响


Terra Nova 湾 （TNB） 海岸被称为南极洲强烈的下坡风汇合带之一。具有地形特定焚风效应的强西风（类似焚风，FLW）可能影响了横贯南极山脉下风向的这一区域的地表温度，但其影响仍未得到研究。国能的 Jang Bogo Station （JBS） 全年风力较弱，偶尔有强风导致冬季气温显着升高。本研究旨在调查 FLW 及其在 JBS 出现的最近表面温度变化方面的变化。在强风事件期间，由于绝热加热和垂直混合等焚风效应，表面会变暖。FLW 大约有 16% （10%） 的时间发生在冬季（每年）。FLW 是由罗斯海东部的气旋引起的。2015-2022 年的气象记录显示，FLW 的频率增加，尤其是在冬季，近年来气温升高。